1mbed TLS ChangeLog (Sorted per branch, date) 2 3= mbed TLS 2.22.0 branch released 2020-04-14 4 5New deprecations 6 * Deprecate MBEDTLS_SSL_HW_RECORD_ACCEL that enables function hooks in the 7 SSL module for hardware acceleration of individual records. 8 * Deprecate mbedtls_ssl_get_max_frag_len() in favour of 9 mbedtls_ssl_get_output_max_frag_len() and 10 mbedtls_ssl_get_input_max_frag_len() to be more precise about which max 11 fragment length is desired. 12 13Security 14 * Fix issue in DTLS handling of new associations with the same parameters 15 (RFC 6347 section 4.2.8): an attacker able to send forged UDP packets to 16 the server could cause it to drop established associations with 17 legitimate clients, resulting in a Denial of Service. This could only 18 happen when MBEDTLS_SSL_DTLS_CLIENT_PORT_REUSE was enabled in config.h 19 (which it is by default). 20 * Fix side channel in ECC code that allowed an adversary with access to 21 precise enough timing and memory access information (typically an 22 untrusted operating system attacking a secure enclave) to fully recover 23 an ECDSA private key. Found and reported by Alejandro Cabrera Aldaya, 24 Billy Brumley and Cesar Pereida Garcia. CVE-2020-10932 25 * Fix a potentially remotely exploitable buffer overread in a 26 DTLS client when parsing the Hello Verify Request message. 27 28Features 29 * The new build option MBEDTLS_SSL_VARIABLE_BUFFER_LENGTH automatically 30 resizes the I/O buffers before and after handshakes, reducing the memory 31 consumption during application data transfer. 32 33Bugfix 34 * Fix compilation failure when both MBEDTLS_SSL_PROTO_DTLS and 35 MBEDTLS_SSL_HW_RECORD_ACCEL are enabled. 36 * Remove a spurious check in ssl_parse_client_psk_identity that triggered 37 a warning with some compilers. Fix contributed by irwir in #2856. 38 * Fix a function name in a debug message. Contributed by Ercan Ozturk in 39 #3013. 40 41Changes 42 * Mbed Crypto is no longer a Git submodule. The crypto part of the library 43 is back directly in the present repository. 44 * Split mbedtls_ssl_get_max_frag_len() into 45 mbedtls_ssl_get_output_max_frag_len() and 46 mbedtls_ssl_get_input_max_frag_len() to ensure that a sufficient input 47 buffer is allocated by the server (if MBEDTLS_SSL_VARIABLE_BUFFER_LENGTH 48 is defined), regardless of what MFL was configured for it. 49 50= mbed TLS 2.21.0 branch released 2020-02-20 51 52New deprecations 53 * Deprecate MBEDTLS_SSL_SRV_SUPPORT_SSLV2_CLIENT_HELLO that enables parsing 54 SSLv2 ClientHello messages. 55 * Deprecate MBEDTLS_SSL_PROTO_SSL3 that enables support for SSLv3. 56 * Deprecate for MBEDTLS_PKCS11_C, the wrapper around the pkcs11-helper 57 library which allows TLS authentication to use keys stored in a 58 PKCS#11 token such as a smartcard. 59 60Security 61 * Fix potential memory overread when performing an ECDSA signature 62 operation. The overread only happens with cryptographically low 63 probability (of the order of 2^-n where n is the bitsize of the curve) 64 unless the RNG is broken, and could result in information disclosure or 65 denial of service (application crash or extra resource consumption). 66 Found by Auke Zeilstra and Peter Schwabe, using static analysis. 67 * To avoid a side channel vulnerability when parsing an RSA private key, 68 read all the CRT parameters from the DER structure rather than 69 reconstructing them. Found by Alejandro Cabrera Aldaya and Billy Bob 70 Brumley. Reported and fix contributed by Jack Lloyd. 71 ARMmbed/mbed-crypto#352 72 73Features 74 * The new build option MBEDTLS_SHA512_NO_SHA384 allows building SHA-512 75 support without SHA-384. 76 77API changes 78 * Change the encoding of key types and curves in the PSA API. The new 79 values are aligned with the upcoming release of the PSA Crypto API 80 specification version 1.0.0. The main change which may break some 81 existing code is that elliptic curve key types no longer encode the 82 exact curve: a psa_ecc_curve_t or psa_key_type_t value only encodes 83 a curve family and the key size determines the exact curve (for example, 84 PSA_ECC_CURVE_SECP_R1 with 256 bits is P256R1). ARMmbed/mbed-crypto#330 85 86Bugfix 87 * Fix an unchecked call to mbedtls_md() in the x509write module. 88 * Fix build failure with MBEDTLS_ZLIB_SUPPORT enabled. Reported by 89 Jack Lloyd in #2859. Fix submitted by jiblime in #2963. 90 * Fix some false-positive uninitialized variable warnings in X.509. Fix 91 contributed by apple-ihack-geek in #2663. 92 * Fix a possible error code mangling in psa_mac_verify_finish() when 93 a cryptographic accelerator fails. ARMmbed/mbed-crypto#345 94 * Fix a bug in mbedtls_pk_parse_key() that would cause it to accept some 95 RSA keys that would later be rejected by functions expecting private 96 keys. Found by Catena cyber using oss-fuzz (issue 20467). 97 * Fix a bug in mbedtls_pk_parse_key() that would cause it to 98 accept some RSA keys with invalid values by silently fixing those values. 99 100= mbed TLS 2.20.0 branch released 2020-01-15 101 102Default behavior changes 103 * The initial seeding of a CTR_DRBG instance makes a second call to the 104 entropy function to obtain entropy for a nonce if the entropy size is less 105 than 3/2 times the key size. In case you want to disable the extra call to 106 grab entropy, you can call mbedtls_ctr_drbg_set_nonce_len() to force the 107 nonce length to 0. 108 109Security 110 * Enforce that mbedtls_entropy_func() gathers a total of 111 MBEDTLS_ENTROPY_BLOCK_SIZE bytes or more from strong sources. In the 112 default configuration, on a platform with a single entropy source, the 113 entropy module formerly only grabbed 32 bytes, which is good enough for 114 security if the source is genuinely strong, but less than the expected 64 115 bytes (size of the entropy accumulator). 116 * Zeroize local variables in mbedtls_internal_aes_encrypt() and 117 mbedtls_internal_aes_decrypt() before exiting the function. The value of 118 these variables can be used to recover the last round key. To follow best 119 practice and to limit the impact of buffer overread vulnerabilities (like 120 Heartbleed) we need to zeroize them before exiting the function. 121 Issue reported by Tuba Yavuz, Farhaan Fowze, Ken (Yihang) Bai, 122 Grant Hernandez, and Kevin Butler (University of Florida) and 123 Dave Tian (Purdue University). 124 * Fix side channel vulnerability in ECDSA. Our bignum implementation is not 125 constant time/constant trace, so side channel attacks can retrieve the 126 blinded value, factor it (as it is smaller than RSA keys and not guaranteed 127 to have only large prime factors), and then, by brute force, recover the 128 key. Reported by Alejandro Cabrera Aldaya and Billy Brumley. 129 * Fix side channel vulnerability in ECDSA key generation. Obtaining precise 130 timings on the comparison in the key generation enabled the attacker to 131 learn leading bits of the ephemeral key used during ECDSA signatures and to 132 recover the private key. Reported by Jeremy Dubeuf. 133 * Catch failure of AES functions in mbedtls_ctr_drbg_random(). Uncaught 134 failures could happen with alternative implementations of AES. Bug 135 reported and fix proposed by Johan Uppman Bruce and Christoffer Lauri, 136 Sectra. 137 138Features 139 * Key derivation inputs in the PSA API can now either come from a key object 140 or from a buffer regardless of the step type. 141 * The CTR_DRBG module can grab a nonce from the entropy source during the 142 initial seeding. The default nonce length is chosen based on the key size 143 to achieve the security strength defined by NIST SP 800-90A. You can 144 change it with mbedtls_ctr_drbg_set_nonce_len(). 145 * Add ENUMERATED tag support to the ASN.1 module. Contributed by 146 msopiha-linaro in ARMmbed/mbed-crypto#307. 147 148API changes 149 * In the PSA API, forbid zero-length keys. To pass a zero-length input to a 150 key derivation function, use a buffer instead (this is now always 151 possible). 152 * Rename psa_asymmetric_sign() to psa_sign_hash() and 153 psa_asymmetric_verify() to psa_verify_hash(). 154 155Bugfix 156 * Fix an incorrect size in a debugging message. Reported and fix 157 submitted by irwir. Fixes #2717. 158 * Fix an unused variable warning when compiling without DTLS. 159 Reported and fix submitted by irwir. Fixes #2800. 160 * Remove a useless assignment. Reported and fix submitted by irwir. 161 Fixes #2801. 162 * Fix a buffer overflow in the PSA HMAC code when using a long key with an 163 unsupported algorithm. Fixes ARMmbed/mbed-crypto#254. 164 * Fix mbedtls_asn1_get_int to support any number of leading zeros. Credit 165 to OSS-Fuzz for finding a bug in an intermediate version of the fix. 166 * Fix mbedtls_asn1_get_bitstring_null to correctly parse bitstrings of at 167 most 2 bytes. 168 * mbedtls_ctr_drbg_set_entropy_len() and 169 mbedtls_hmac_drbg_set_entropy_len() now work if you call them before 170 mbedtls_ctr_drbg_seed() or mbedtls_hmac_drbg_seed(). 171 172Changes 173 * Remove the technical possibility to define custom mbedtls_md_info 174 structures, which was exposed only in an internal header. 175 * psa_close_key(0) and psa_destroy_key(0) now succeed (doing nothing, as 176 before). 177 * Variables containing error codes are now initialized to an error code 178 rather than success, so that coding mistakes or memory corruption tends to 179 cause functions to return this error code rather than a success. There are 180 no known instances where this changes the behavior of the library: this is 181 merely a robustness improvement. ARMmbed/mbed-crypto#323 182 * Remove a useless call to mbedtls_ecp_group_free(). Contributed by 183 Alexander Krizhanovsky in ARMmbed/mbed-crypto#210. 184 * Speed up PBKDF2 by caching the digest calculation. Contributed by Jack 185 Lloyd and Fortanix Inc in ARMmbed/mbed-crypto#277. 186 * Small performance improvement of mbedtls_mpi_div_mpi(). Contributed by 187 Alexander Krizhanovsky in ARMmbed/mbed-crypto#308. 188 189= mbed TLS 2.19.1 branch released 2019-09-16 190 191Features 192 * Declare include headers as PUBLIC to propagate to CMake project consumers 193 Contributed by Zachary J. Fields in PR #2949. 194 * Add nss_keylog to ssl_client2 and ssl_server2, enabling easier analysis of 195 TLS sessions with tools like Wireshark. 196 197API Changes 198 * Make client_random and server_random const in 199 mbedtls_ssl_export_keys_ext_t, so that the key exporter is discouraged 200 from modifying the client/server hello. 201 202Bugfix 203 * Fix some false-positive uninitialized variable warnings in crypto. Fix 204 contributed by apple-ihack-geek in #2663. 205 206= mbed TLS 2.19.0 branch released 2019-09-06 207 208Security 209 * Fix a missing error detection in ECJPAKE. This could have caused a 210 predictable shared secret if a hardware accelerator failed and the other 211 side of the key exchange had a similar bug. 212 * When writing a private EC key, use a constant size for the private 213 value, as specified in RFC 5915. Previously, the value was written 214 as an ASN.1 INTEGER, which caused the size of the key to leak 215 about 1 bit of information on average and could cause the value to be 216 1 byte too large for the output buffer. 217 * The deterministic ECDSA calculation reused the scheme's HMAC-DRBG to 218 implement blinding. Because of this for the same key and message the same 219 blinding value was generated. This reduced the effectiveness of the 220 countermeasure and leaked information about the private key through side 221 channels. Reported by Jack Lloyd. 222 223Features 224 * Add new API functions mbedtls_ssl_session_save() and 225 mbedtls_ssl_session_load() to allow serializing a session, for example to 226 store it in non-volatile storage, and later using it for TLS session 227 resumption. 228 * Add a new API function mbedtls_ssl_check_record() to allow checking that 229 an incoming record is valid, authentic and has not been seen before. This 230 feature can be used alongside Connection ID and SSL context serialisation. 231 The feature is enabled at compile-time by MBEDTLS_SSL_RECORD_CHECKING 232 option. 233 * New implementation of X25519 (ECDH using Curve25519) from Project Everest 234 (https://project-everest.github.io/). It can be enabled at compile time 235 with MBEDTLS_ECDH_VARIANT_EVEREST_ENABLED. This implementation is formally 236 verified and significantly faster, but is only supported on x86 platforms 237 (32-bit and 64-bit) using GCC, Clang or Visual Studio. Contributed by 238 Christoph Wintersteiger from Microsoft Research. 239 * Add mbedtls_net_close(), enabling the building of forking servers where 240 the parent process closes the client socket and continue accepting, and 241 the child process closes the listening socket and handles the client 242 socket. Contributed by Robert Larsen in #2803. 243 244API Changes 245 * Add DER-encoded test CRTs to library/certs.c, allowing 246 the example programs ssl_server2 and ssl_client2 to be run 247 if MBEDTLS_FS_IO and MBEDTLS_PEM_PARSE_C are unset. Fixes #2254. 248 * The HAVEGE state type now uses uint32_t elements instead of int. 249 * The functions mbedtls_ecp_curve_list() and mbedtls_ecp_grp_id_list() now 250 list all curves for which at least one of ECDH or ECDSA is supported, not 251 just curves for which both are supported. Call mbedtls_ecdsa_can_do() or 252 mbedtls_ecdh_can_do() on each result to check whether each algorithm is 253 supported. 254 * The new function mbedtls_ecdsa_sign_det_ext() is similar to 255 mbedtls_ecdsa_sign_det() but allows passing an external RNG for the 256 purpose of blinding. 257 258New deprecations 259 * Deprecate mbedtls_ecdsa_sign_det() in favor of a functions that can take an 260 RNG function as an input. 261 * Calling mbedtls_ecdsa_write_signature() with NULL as the f_rng argument 262 is now deprecated. 263 264Bugfix 265 * Fix missing bounds checks in X.509 parsing functions that could 266 lead to successful parsing of ill-formed X.509 CRTs. Fixes #2437. 267 * Fix multiple X.509 functions previously returning ASN.1 low-level error 268 codes to always wrap these codes into X.509 high level error codes before 269 returning. Fixes #2431. 270 * Fix to allow building test suites with any warning that detects unused 271 functions. Fixes #1628. 272 * Fix typo in net_would_block(). Fixes #528 reported by github-monoculture. 273 * Remove redundant include file in timing.c. Fixes #2640 reported by irwir. 274 * Fix build failure when building with mingw on Windows by including 275 stdarg.h where needed. Fixes #2656. 276 * Fix Visual Studio Release x64 build configuration by inheriting 277 PlatformToolset from the project configuration. Fixes #1430 reported by 278 irwir. 279 * Enable Suite B with subset of ECP curves. Make sure the code compiles even 280 if some curves are not defined. Fixes #1591 reported by dbedev. 281 * Fix misuse of signed arithmetic in the HAVEGE module. #2598 282 * Avoid use of statically sized stack buffers for certificate writing. 283 This previously limited the maximum size of DER encoded certificates 284 in mbedtls_x509write_crt_der() to 2Kb. Reported by soccerGB in #2631. 285 * Fix partial zeroing in x509_get_other_name. Found and fixed by ekse, #2716. 286 * Update test certificates that were about to expire. Reported by 287 Bernhard M. Wiedemann in #2357. 288 * Fix the build on ARMv5TE in ARM mode to not use assembly instructions 289 that are only available in Thumb mode. Fix contributed by Aurelien Jarno 290 in #2169. 291 * Fix propagation of restart contexts in restartable EC operations. 292 This could previously lead to segmentation faults in builds using an 293 address-sanitizer and enabling but not using MBEDTLS_ECP_RESTARTABLE. 294 * Fix memory leak in in mpi_miller_rabin(). Contributed by 295 Jens Wiklander <jens.wiklander@linaro.org> in #2363 296 * Improve code clarity in x509_crt module, removing false-positive 297 uninitialized variable warnings on some recent toolchains (GCC8, etc). 298 Discovered and fixed by Andy Gross (Linaro), #2392. 299 * Fix bug in endianness conversion in bignum module. This lead to 300 functionally incorrect code on bigendian systems which don't have 301 __BYTE_ORDER__ defined. Reported by Brendan Shanks. Fixes #2622. 302 303Changes 304 * Replace multiple uses of MD2 by SHA-256 in X.509 test suite. Fixes #821. 305 * Make it easier to define MBEDTLS_PARAM_FAILED as assert (which config.h 306 suggests). #2671 307 * Make `make clean` clean all programs always. Fixes #1862. 308 * Add a Dockerfile and helper scripts (all-in-docker.sh, basic-in-docker.sh, 309 docker-env.sh) to simplify running test suites on a Linux host. Contributed 310 by Peter Kolbus (Garmin). 311 * Add `reproducible` option to `ssl_client2` and `ssl_server2` to enable 312 test runs without variability. Contributed by Philippe Antoine (Catena 313 cyber) in #2681. 314 * Extended .gitignore to ignore Visual Studio artifacts. Fixed by ConfusedSushi. 315 * Adds fuzz targets, especially for continuous fuzzing with OSS-Fuzz. 316 Contributed by Philippe Antoine (Catena cyber). 317 * Remove the crypto part of the library from Mbed TLS. The crypto 318 code and tests are now only available via Mbed Crypto, which 319 Mbed TLS references as a Git submodule. 320 321= mbed TLS 2.18.1 branch released 2019-07-12 322 323Bugfix 324 * Fix build failure when building with mingw on Windows by including 325 stdarg.h where needed. Fixes #2656. 326 327Changes 328 * Enable building of Mbed TLS as a CMake subproject. Suggested and fixed by 329 Ashley Duncan in #2609. 330 331= mbed TLS 2.18.0 branch released 2019-06-11 332 333Features 334 * Add the Any Policy certificate policy oid, as defined in 335 rfc 5280 section 4.2.1.4. 336 * It is now possible to use NIST key wrap mode via the mbedtls_cipher API. 337 Contributed by Jack Lloyd and Fortanix Inc. 338 * Add the Wi-SUN Field Area Network (FAN) device extended key usage. 339 * Add the oid certificate policy x509 extension. 340 * It is now possible to perform RSA PKCS v1.5 signatures with RIPEMD-160 digest. 341 Contributed by Jack Lloyd and Fortanix Inc. 342 * Extend the MBEDTLS_SSL_EXPORT_KEYS to export the handshake randbytes, 343 and the used tls-prf. 344 * Add public API for tls-prf function, according to requested enum. 345 * Add support for parsing otherName entries in the Subject Alternative Name 346 X.509 certificate extension, specifically type hardware module name, 347 as defined in RFC 4108 section 5. 348 * Add support for parsing certificate policies extension, as defined in 349 RFC 5280 section 4.2.1.4. Currently, only the "Any Policy" policy is 350 supported. 351 * List all SAN types in the subject_alt_names field of the certificate. 352 Resolves #459. 353 * Add support for draft-05 of the Connection ID extension, as specified 354 in https://tools.ietf.org/html/draft-ietf-tls-dtls-connection-id-05. 355 The Connection ID extension allows to keep DTLS connections beyond the 356 lifetime of the underlying transport by adding a connection identifier 357 to the DTLS record header. This identifier can be used to associated an 358 incoming record with the correct connection data even after the peer has 359 changed its IP or port. The feature is enabled at compile-time by setting 360 MBEDTLS_SSL_DTLS_CONNECTION_ID (disabled by default), and at run-time 361 through the new APIs mbedtls_ssl_conf_cid() and mbedtls_ssl_set_cid(). 362 363 364API Changes 365 * Extend the MBEDTLS_SSL_EXPORT_KEYS to export the handshake randbytes, 366 and the used tls-prf. 367 * Add public API for tls-prf function, according to requested enum. 368 369Bugfix 370 * Fix private key DER output in the key_app_writer example. File contents 371 were shifted by one byte, creating an invalid ASN.1 tag. Fixed by 372 Christian Walther in #2239. 373 * Fix potential memory leak in X.509 self test. Found and fixed by 374 Junhwan Park, #2106. 375 * Reduce stack usage of hkdf tests. Fixes #2195. 376 * Fix 1-byte buffer overflow in mbedtls_mpi_write_string() when 377 used with negative inputs. Found by Guido Vranken in #2404. Credit to 378 OSS-Fuzz. 379 * Fix bugs in the AEAD test suite which would be exposed by ciphers which 380 either used both encrypt and decrypt key schedules, or which perform padding. 381 GCM and CCM were not affected. Fixed by Jack Lloyd. 382 * Fix incorrect default port number in ssl_mail_client example's usage. 383 Found and fixed by irwir. #2337 384 * Add psa_util.h to test/cpp_dummy_build to fix build_default_make_gcc_and_cxx. 385 Fixed by Peter Kolbus (Garmin). #2579 386 * Add missing parentheses around parameters in the definition of the 387 public macro MBEDTLS_X509_ID_FLAG. This could lead to invalid evaluation 388 in case operators binding less strongly than subtraction were used 389 for the parameter. 390 * Add a check for MBEDTLS_X509_CRL_PARSE_C in ssl_server2, guarding the crl 391 sni entry parameter. Reported by inestlerode in #560. 392 * Set the next sequence of the subject_alt_name to NULL when deleting 393 sequence on failure. Found and fix suggested by Philippe Antoine. 394 Credit to OSS-Fuzz. 395 396Changes 397 * Server's RSA certificate in certs.c was SHA-1 signed. In the default 398 mbedTLS configuration only SHA-2 signed certificates are accepted. 399 This certificate is used in the demo server programs, which lead the 400 client programs to fail at the peer's certificate verification 401 due to an unacceptable hash signature. The certificate has been 402 updated to one that is SHA-256 signed. Fix contributed by 403 Illya Gerasymchuk. 404 * Return from various debugging routines immediately if the 405 provided SSL context is unset. 406 * Remove dead code from bignum.c in the default configuration. 407 Found by Coverity, reported and fixed by Peter Kolbus (Garmin). Fixes #2309. 408 * Add test for minimal value of MBEDTLS_MPI_WINDOW_SIZE to all.sh. 409 Contributed by Peter Kolbus (Garmin). 410 * Change wording in the `mbedtls_ssl_conf_max_frag_len()`'s documentation to 411 improve clarity. Fixes #2258. 412 413= mbed TLS 2.17.0 branch released 2019-03-19 414 415Features 416 * Add a new X.509 API call `mbedtls_x509_parse_der_nocopy()` 417 which allows copy-less parsing of DER encoded X.509 CRTs, 418 at the cost of additional lifetime constraints on the input 419 buffer, but at the benefit of reduced RAM consumption. 420 * Add a new function mbedtls_asn1_write_named_bitstring() to write ASN.1 421 named bitstring in DER as required by RFC 5280 Appendix B. 422 * Add MBEDTLS_REMOVE_3DES_CIPHERSUITES to allow removing 3DES ciphersuites 423 from the default list (enabled by default). See 424 https://sweet32.info/SWEET32_CCS16.pdf. 425 426API Changes 427 * Add a new X.509 API call `mbedtls_x509_parse_der_nocopy()`. 428 See the Features section for more information. 429 * Allow to opt in to the removal the API mbedtls_ssl_get_peer_cert() 430 for the benefit of saving RAM, by disabling the new compile-time 431 option MBEDTLS_SSL_KEEP_PEER_CERTIFICATE (enabled by default for 432 API stability). Disabling this option makes mbedtls_ssl_get_peer_cert() 433 always return NULL, and removes the peer_cert field from the 434 mbedtls_ssl_session structure which otherwise stores the peer's 435 certificate. 436 437Security 438 * Make mbedtls_ecdh_get_params return an error if the second key 439 belongs to a different group from the first. Before, if an application 440 passed keys that belonged to different group, the first key's data was 441 interpreted according to the second group, which could lead to either 442 an error or a meaningless output from mbedtls_ecdh_get_params. In the 443 latter case, this could expose at most 5 bits of the private key. 444 445Bugfix 446 * Fix a compilation issue with mbedtls_ecp_restart_ctx not being defined 447 when MBEDTLS_ECP_ALT is defined. Reported by jwhui. Fixes #2242. 448 * Run the AD too long test only if MBEDTLS_CCM_ALT is not defined. 449 Raised as a comment in #1996. 450 * Reduce the stack consumption of mbedtls_mpi_fill_random() which could 451 previously lead to a stack overflow on constrained targets. 452 * Add `MBEDTLS_SELF_TEST` for the mbedtls_self_test functions 453 in the header files, which missed the precompilation check. #971 454 * Fix returning the value 1 when mbedtls_ecdsa_genkey failed. 455 * Remove a duplicate #include in a sample program. Fixed by Masashi Honma #2326. 456 * Remove the mbedtls namespacing from the header file, to fix a "file not found" 457 build error. Fixed by Haijun Gu #2319. 458 * Fix signed-to-unsigned integer conversion warning 459 in X.509 module. Fixes #2212. 460 * Reduce stack usage of `mpi_write_hlp()` by eliminating recursion. 461 Fixes #2190. 462 * Fix false failure in all.sh when backup files exist in include/mbedtls 463 (e.g. config.h.bak). Fixed by Peter Kolbus (Garmin) #2407. 464 * Ensure that unused bits are zero when writing ASN.1 bitstrings when using 465 mbedtls_asn1_write_bitstring(). 466 * Fix issue when writing the named bitstrings in KeyUsage and NsCertType 467 extensions in CSRs and CRTs that caused these bitstrings to not be encoded 468 correctly as trailing zeroes were not accounted for as unused bits in the 469 leading content octet. Fixes #1610. 470 471Changes 472 * Reduce RAM consumption during session renegotiation by not storing 473 the peer CRT chain and session ticket twice. 474 * Include configuration file in all header files that use configuration, 475 instead of relying on other header files that they include. 476 Inserted as an enhancement for #1371 477 * Add support for alternative CSR headers, as used by Microsoft and defined 478 in RFC 7468. Found by Michael Ernst. Fixes #767. 479 * Correct many misspellings. Fixed by MisterDA #2371. 480 * Provide an abstraction of vsnprintf to allow alternative implementations 481 for platforms that don't provide it. Based on contributions by Joris Aerts 482 and Nathaniel Wesley Filardo. 483 * Fix clobber list in MIPS assembly for large integer multiplication. 484 Previously, this could lead to functionally incorrect assembly being 485 produced by some optimizing compilers, showing up as failures in 486 e.g. RSA or ECC signature operations. Reported in #1722, fix suggested 487 by Aurelien Jarno and submitted by Jeffrey Martin. 488 * Reduce the complexity of the timing tests. They were assuming more than the 489 underlying OS actually guarantees. 490 * Fix configuration queries in ssl-opt.h. #2030 491 * Ensure that ssl-opt.h can be run in OS X. #2029 492 * Re-enable certain interoperability tests in ssl-opt.sh which had previously 493 been disabled for lack of a sufficiently recent version of GnuTLS on the CI. 494 * Ciphersuites based on 3DES now have the lowest priority by default when 495 they are enabled. 496 497= mbed TLS 2.16.0 branch released 2018-12-21 498 499Features 500 * Add a new config.h option of MBEDTLS_CHECK_PARAMS that enables validation 501 of parameters in the API. This allows detection of obvious misuses of the 502 API, such as passing NULL pointers. The API of existing functions hasn't 503 changed, but requirements on parameters have been made more explicit in 504 the documentation. See the corresponding API documentation for each 505 function to see for which parameter values it is defined. This feature is 506 disabled by default. See its API documentation in config.h for additional 507 steps you have to take when enabling it. 508 509API Changes 510 * The following functions in the random generator modules have been 511 deprecated and replaced as shown below. The new functions change 512 the return type from void to int to allow returning error codes when 513 using MBEDTLS_<MODULE>_ALT for the underlying AES or message digest 514 primitive. Fixes #1798. 515 mbedtls_ctr_drbg_update() -> mbedtls_ctr_drbg_update_ret() 516 mbedtls_hmac_drbg_update() -> mbedtls_hmac_drbg_update_ret() 517 * Extend ECDH interface to enable alternative implementations. 518 * Deprecate error codes of the form MBEDTLS_ERR_xxx_INVALID_KEY_LENGTH for 519 ARIA, CAMELLIA and Blowfish. These error codes will be replaced by 520 the more generic per-module error codes MBEDTLS_ERR_xxx_BAD_INPUT_DATA. 521 * Additional parameter validation checks have been added for the following 522 modules - AES, ARIA, Blowfish, CAMELLIA, CCM, GCM, DHM, ECP, ECDSA, ECDH, 523 ECJPAKE, SHA, Chacha20 and Poly1305, cipher, pk, RSA, and MPI. 524 Where modules have had parameter validation added, existing parameter 525 checks may have changed. Some modules, such as Chacha20 had existing 526 parameter validation whereas other modules had little. This has now been 527 changed so that the same level of validation is present in all modules, and 528 that it is now optional with the MBEDTLS_CHECK_PARAMS flag which by default 529 is off. That means that checks which were previously present by default 530 will no longer be. 531 532New deprecations 533 * Deprecate mbedtls_ctr_drbg_update and mbedtls_hmac_drbg_update 534 in favor of functions that can return an error code. 535 536Bugfix 537 * Fix for Clang, which was reporting a warning for the bignum.c inline 538 assembly for AMD64 targets creating string literals greater than those 539 permitted by the ISO C99 standard. Found by Aaron Jones. Fixes #482. 540 * Fix runtime error in `mbedtls_platform_entropy_poll()` when run 541 through qemu user emulation. Reported and fix suggested by randombit 542 in #1212. Fixes #1212. 543 * Fix an unsafe bounds check when restoring an SSL session from a ticket. 544 This could lead to a buffer overflow, but only in case ticket authentication 545 was broken. Reported and fix suggested by Guido Vranken in #659. 546 * Add explicit integer to enumeration type casts to example program 547 programs/pkey/gen_key which previously led to compilation failure 548 on some toolchains. Reported by phoenixmcallister. Fixes #2170. 549 * Fix double initialization of ECC hardware that made some accelerators 550 hang. 551 * Clarify documentation of mbedtls_ssl_set_own_cert() regarding the absence 552 of check for certificate/key matching. Reported by Attila Molnar, #507. 553 554 = mbed TLS 2.15.1 branch released 2018-11-30 555 556 Changes 557 * Update the Mbed Crypto submodule to version 0.1.0b2. 558 559 = mbed TLS 2.15.0 branch released 2018-11-23 560 561 Features 562 * Add an experimental build option, USE_CRYPTO_SUBMODULE, to enable use of 563 Mbed Crypto as the source of the cryptography implementation. 564 * Add an experimental configuration option, MBEDTLS_PSA_CRYPTO_C, to enable 565 the PSA Crypto API from Mbed Crypto when additionally used with the 566 USE_CRYPTO_SUBMODULE build option. 567 568 Changes 569 * Add unit tests for AES-GCM when called through mbedtls_cipher_auth_xxx() 570 from the cipher abstraction layer. Fixes #2198. 571 572= mbed TLS 2.14.1 branch released 2018-11-30 573 574Security 575 * Fix timing variations and memory access variations in RSA PKCS#1 v1.5 576 decryption that could lead to a Bleichenbacher-style padding oracle 577 attack. In TLS, this affects servers that accept ciphersuites based on 578 RSA decryption (i.e. ciphersuites whose name contains RSA but not 579 (EC)DH(E)). Discovered by Eyal Ronen (Weizmann Institute), Robert Gillham 580 (University of Adelaide), Daniel Genkin (University of Michigan), 581 Adi Shamir (Weizmann Institute), David Wong (NCC Group), and Yuval Yarom 582 (University of Adelaide, Data61). The attack is described in more detail 583 in the paper available here: http://cat.eyalro.net/cat.pdf CVE-2018-19608 584 * In mbedtls_mpi_write_binary(), don't leak the exact size of the number 585 via branching and memory access patterns. An attacker who could submit 586 a plaintext for RSA PKCS#1 v1.5 decryption but only observe the timing 587 of the decryption and not its result could nonetheless decrypt RSA 588 plaintexts and forge RSA signatures. Other asymmetric algorithms may 589 have been similarly vulnerable. Reported by Eyal Ronen, Robert Gillham, 590 Daniel Genkin, Adi Shamir, David Wong and Yuval Yarom. 591 * Wipe sensitive buffers on the stack in the CTR_DRBG and HMAC_DRBG 592 modules. 593 594API Changes 595 * The new functions mbedtls_ctr_drbg_update_ret() and 596 mbedtls_hmac_drbg_update_ret() are similar to mbedtls_ctr_drbg_update() 597 and mbedtls_hmac_drbg_update() respectively, but the new functions 598 report errors whereas the old functions return void. We recommend that 599 applications use the new functions. 600 601= mbed TLS 2.14.0 branch released 2018-11-19 602 603Security 604 * Fix overly strict DN comparison when looking for CRLs belonging to a 605 particular CA. This previously led to ignoring CRLs when the CRL's issuer 606 name and the CA's subject name differed in their string encoding (e.g., 607 one using PrintableString and the other UTF8String) or in the choice of 608 upper and lower case. Reported by Henrik Andersson of Bosch GmbH in issue 609 #1784. 610 * Fix a flawed bounds check in server PSK hint parsing. In case the 611 incoming message buffer was placed within the first 64KiB of address 612 space and a PSK-(EC)DHE ciphersuite was used, this allowed an attacker 613 to trigger a memory access up to 64KiB beyond the incoming message buffer, 614 potentially leading to an application crash or information disclosure. 615 * Fix mbedtls_mpi_is_prime() to use more rounds of probabilistic testing. The 616 previous settings for the number of rounds made it practical for an 617 adversary to construct non-primes that would be erroneously accepted as 618 primes with high probability. This does not have an impact on the 619 security of TLS, but can matter in other contexts with numbers chosen 620 potentially by an adversary that should be prime and can be validated. 621 For example, the number of rounds was enough to securely generate RSA key 622 pairs or Diffie-Hellman parameters, but was insufficient to validate 623 Diffie-Hellman parameters properly. 624 See "Prime and Prejudice" by by Martin R. Albrecht and Jake Massimo and 625 Kenneth G. Paterson and Juraj Somorovsky. 626 627Features 628 * Add support for temporarily suspending expensive ECC computations after 629 some configurable amount of operations. This is intended to be used in 630 constrained, single-threaded systems where ECC is time consuming and can 631 block other operations until they complete. This is disabled by default, 632 but can be enabled by MBEDTLS_ECP_RESTARTABLE at compile time and 633 configured by mbedtls_ecp_set_max_ops() at runtime. It applies to the new 634 xxx_restartable functions in ECP, ECDSA, PK and X.509 (CRL not supported 635 yet), and to existing functions in ECDH and SSL (currently only 636 implemented client-side, for ECDHE-ECDSA ciphersuites in TLS 1.2, 637 including client authentication). 638 * Add support for Arm CPU DSP extensions to accelerate asymmetric key 639 operations. On CPUs where the extensions are available, they can accelerate 640 MPI multiplications used in ECC and RSA cryptography. Contributed by 641 Aurelien Jarno. 642 * Extend RSASSA-PSS signature to allow a smaller salt size. Previously, PSS 643 signature always used a salt with the same length as the hash, and returned 644 an error if this was not possible. Now the salt size may be up to two bytes 645 shorter. This allows the library to support all hash and signature sizes 646 that comply with FIPS 186-4, including SHA-512 with a 1024-bit key. 647 * Add support for 128-bit keys in CTR_DRBG. Note that using keys shorter 648 than 256 bits limits the security of generated material to 128 bits. 649 650API Changes 651 * Add a common error code of `MBEDTLS_ERR_PLATFORM_FEATURE_UNSUPPORTED` for 652 a feature that is not supported by underlying alternative 653 implementations implementing cryptographic primitives. This is useful for 654 hardware accelerators that don't implement all options or features. 655 656New deprecations 657 * All module specific errors following the form 658 MBEDTLS_ERR_XXX_FEATURE_UNAVAILABLE that indicate a feature is not 659 supported are deprecated and are now replaced by the new equivalent 660 platform error. 661 * All module specific generic hardware acceleration errors following the 662 form MBEDTLS_ERR_XXX_HW_ACCEL_FAILED that are deprecated and are replaced 663 by the equivalent plaform error. 664 * Deprecate the function mbedtls_mpi_is_prime() in favor of 665 mbedtls_mpi_is_prime_ext() which allows specifying the number of 666 Miller-Rabin rounds. 667 668Bugfix 669 * Fix wrong order of freeing in programs/ssl/ssl_server2 example 670 application leading to a memory leak in case both 671 MBEDTLS_MEMORY_BUFFER_ALLOC_C and MBEDTLS_MEMORY_BACKTRACE are set. 672 Fixes #2069. 673 * Fix a bug in the update function for SSL ticket keys which previously 674 invalidated keys of a lifetime of less than a 1s. Fixes #1968. 675 * Fix failure in hmac_drbg in the benchmark sample application, when 676 MBEDTLS_THREADING_C is defined. Found by TrinityTonic, #1095 677 * Fix a bug in the record decryption routine ssl_decrypt_buf() 678 which lead to accepting properly authenticated but improperly 679 padded records in case of CBC ciphersuites using Encrypt-then-MAC. 680 * Fix memory leak and freeing without initialization in the example 681 program programs/x509/cert_write. Fixes #1422. 682 * Ignore IV in mbedtls_cipher_set_iv() when the cipher mode is 683 MBEDTLS_MODE_ECB. Found by ezdevelop. Fixes #1091. 684 * Zeroize memory used for buffering or reassembling handshake messages 685 after use. 686 * Use `mbedtls_platform_zeroize()` instead of `memset()` for zeroization 687 of sensitive data in the example programs aescrypt2 and crypt_and_hash. 688 * Change the default string format used for various X.509 DN attributes to 689 UTF8String. Previously, the use of the PrintableString format led to 690 wildcards and non-ASCII characters being unusable in some DN attributes. 691 Reported by raprepo in #1860 and by kevinpt in #468. Fix contributed by 692 Thomas-Dee. 693 * Fix compilation failure for configurations which use compile time 694 replacements of standard calloc/free functions through the macros 695 MBEDTLS_PLATFORM_CALLOC_MACRO and MBEDTLS_PLATFORM_FREE_MACRO. 696 Reported by ole-de and ddhome2006. Fixes #882, #1642 and #1706. 697 698Changes 699 * Removed support for Yotta as a build tool. 700 * Add tests for session resumption in DTLS. 701 * Close a test gap in (D)TLS between the client side and the server side: 702 test the handling of large packets and small packets on the client side 703 in the same way as on the server side. 704 * Change the dtls_client and dtls_server samples to work by default over 705 IPv6 and optionally by a build option over IPv4. 706 * Change the use of Windows threading to use Microsoft Visual C++ runtime 707 calls, rather than Win32 API calls directly. This is necessary to avoid 708 conflict with C runtime usage. Found and fixed by irwir. 709 * Remember the string format of X.509 DN attributes when replicating 710 X.509 DNs. Previously, DN attributes were always written in their default 711 string format (mostly PrintableString), which could lead to CRTs being 712 created which used PrintableStrings in the issuer field even though the 713 signing CA used UTF8Strings in its subject field; while X.509 compliant, 714 such CRTs were rejected in some applications, e.g. some versions of 715 Firefox, curl and GnuTLS. Reported in #1033 by Moschn. Fix contributed by 716 Thomas-Dee. 717 * Improve documentation of mbedtls_ssl_get_verify_result(). 718 Fixes #517 reported by github-monoculture. 719 * Add MBEDTLS_MPI_GEN_PRIME_FLAG_LOW_ERR flag to mbedtls_mpi_gen_prime() and 720 use it to reduce error probability in RSA key generation to levels mandated 721 by FIPS-186-4. 722 723= mbed TLS 2.13.1 branch released 2018-09-06 724 725API Changes 726 * Extend the platform module with an abstraction mbedtls_platform_gmtime_r() 727 whose implementation should behave as a thread-safe version of gmtime(). 728 This allows users to configure such an implementation at compile time when 729 the target system cannot be deduced automatically, by setting the option 730 MBEDTLS_PLATFORM_GMTIME_R_ALT. At this stage Mbed TLS is only able to 731 automatically select implementations for Windows and POSIX C libraries. 732 733Bugfix 734 * Fix build failures on platforms where only gmtime() is available but 735 neither gmtime_r() nor gmtime_s() are present. Fixes #1907. 736 737= mbed TLS 2.13.0 branch released 2018-08-31 738 739Security 740 * Fix an issue in the X.509 module which could lead to a buffer overread 741 during certificate extensions parsing. In case of receiving malformed 742 input (extensions length field equal to 0), an illegal read of one byte 743 beyond the input buffer is made. Found and analyzed by Nathan Crandall. 744 745Features 746 * Add support for fragmentation of outgoing DTLS handshake messages. This 747 is controlled by the maximum fragment length as set locally or negotiated 748 with the peer, as well as by a new per-connection MTU option, set using 749 mbedtls_ssl_set_mtu(). 750 * Add support for auto-adjustment of MTU to a safe value during the 751 handshake when flights do not get through (RFC 6347, section 4.1.1.1, 752 last paragraph). 753 * Add support for packing multiple records within a single datagram, 754 enabled by default. 755 * Add support for buffering out-of-order handshake messages in DTLS. 756 The maximum amount of RAM used for this can be controlled by the 757 compile-time constant MBEDTLS_SSL_DTLS_MAX_BUFFERING defined 758 in mbedtls/config.h. 759 760API Changes 761 * Add function mbedtls_ssl_set_datagram_packing() to configure 762 the use of datagram packing (enabled by default). 763 764Bugfix 765 * Fix a potential memory leak in mbedtls_ssl_setup() function. An allocation 766 failure in the function could lead to other buffers being leaked. 767 * Fixes an issue with MBEDTLS_CHACHAPOLY_C which would not compile if 768 MBEDTLS_ARC4_C and MBEDTLS_CIPHER_NULL_CIPHER weren't also defined. #1890 769 * Fix a memory leak in ecp_mul_comb() if ecp_precompute_comb() fails. 770 Fix contributed by Espressif Systems. 771 * Add ecc extensions only if an ecc based ciphersuite is used. 772 This improves compliance to RFC 4492, and as a result, solves 773 interoperability issues with BouncyCastle. Raised by milenamil in #1157. 774 * Replace printf with mbedtls_printf in the ARIA module. Found by 775 TrinityTonic in #1908. 776 * Fix potential use-after-free in mbedtls_ssl_get_max_frag_len() 777 and mbedtls_ssl_get_record_expansion() after a session reset. Fixes #1941. 778 * Fix a bug that caused SSL/TLS clients to incorrectly abort the handshake 779 with TLS versions 1.1 and earlier when the server requested authentication 780 without providing a list of CAs. This was due to an overly strict bounds 781 check in parsing the CertificateRequest message, 782 introduced in Mbed TLS 2.12.0. Fixes #1954. 783 * Fix a miscalculation of the maximum record expansion in 784 mbedtls_ssl_get_record_expansion() in case of ChachaPoly ciphersuites, 785 or CBC ciphersuites in (D)TLS versions 1.1 or higher. Fixes #1913, #1914. 786 * Fix undefined shifts with negative values in certificates parsing 787 (found by Catena cyber using oss-fuzz) 788 * Fix memory leak and free without initialization in pk_encrypt 789 and pk_decrypt example programs. Reported by Brace Stout. Fixes #1128. 790 * Remove redundant else statement. Raised by irwir. Fixes #1776. 791 792Changes 793 * Copy headers preserving timestamps when doing a "make install". 794 Contributed by xueruini. 795 * Allow the forward declaration of public structs. Contributed by Dawid 796 Drozd. Fixes #1215 raised by randombit. 797 * Improve compatibility with some alternative CCM implementations by using 798 CCM test vectors from RAM. 799 * Add support for buffering of out-of-order handshake messages. 800 * Add warnings to the documentation of the HKDF module to reduce the risk 801 of misusing the mbedtls_hkdf_extract() and mbedtls_hkdf_expand() 802 functions. Fixes #1775. Reported by Brian J. Murray. 803 804= mbed TLS 2.12.0 branch released 2018-07-25 805 806Security 807 * Fix a vulnerability in TLS ciphersuites based on CBC and using SHA-384, 808 in (D)TLS 1.0 to 1.2, that allowed an active network attacker to 809 partially recover the plaintext of messages under some conditions by 810 exploiting timing measurements. With DTLS, the attacker could perform 811 this recovery by sending many messages in the same connection. With TLS 812 or if mbedtls_ssl_conf_dtls_badmac_limit() was used, the attack only 813 worked if the same secret (for example a HTTP Cookie) has been repeatedly 814 sent over connections manipulated by the attacker. Connections using GCM 815 or CCM instead of CBC, using hash sizes other than SHA-384, or using 816 Encrypt-then-Mac (RFC 7366) were not affected. The vulnerability was 817 caused by a miscalculation (for SHA-384) in a countermeasure to the 818 original Lucky 13 attack. Found by Kenny Paterson, Eyal Ronen and Adi 819 Shamir. 820 * Fix a vulnerability in TLS ciphersuites based on CBC, in (D)TLS 1.0 to 821 1.2, that allowed a local attacker, able to execute code on the local 822 machine as well as manipulate network packets, to partially recover the 823 plaintext of messages under some conditions by using a cache attack 824 targeting an internal MD/SHA buffer. With TLS or if 825 mbedtls_ssl_conf_dtls_badmac_limit() was used, the attack only worked if 826 the same secret (for example a HTTP Cookie) has been repeatedly sent over 827 connections manipulated by the attacker. Connections using GCM or CCM 828 instead of CBC or using Encrypt-then-Mac (RFC 7366) were not affected. 829 Found by Kenny Paterson, Eyal Ronen and Adi Shamir. 830 * Add a counter-measure against a vulnerability in TLS ciphersuites based 831 on CBC, in (D)TLS 1.0 to 1.2, that allowed a local attacker, able to 832 execute code on the local machine as well as manipulate network packets, 833 to partially recover the plaintext of messages under some conditions (see 834 previous entry) by using a cache attack targeting the SSL input record 835 buffer. Connections using GCM or CCM instead of CBC or using 836 Encrypt-then-Mac (RFC 7366) were not affected. Found by Kenny Paterson, 837 Eyal Ronen and Adi Shamir. 838 839Features 840 * Add new crypto primitives from RFC 7539: stream cipher Chacha20, one-time 841 authenticator Poly1305 and AEAD construct Chacha20-Poly1305. Contributed 842 by Daniel King. 843 * Add support for CHACHA20-POLY1305 ciphersuites from RFC 7905. 844 * Add platform support for the Haiku OS. (https://www.haiku-os.org). 845 Contributed by Augustin Cavalier. 846 * Make the receive and transmit buffers independent sizes, for situations 847 where the outgoing buffer can be fixed at a smaller size than the incoming 848 buffer, which can save some RAM. If buffer lengths are kept equal, there 849 is no functional difference. Contributed by Angus Gratton, and also 850 independently contributed again by Paul Sokolovsky. 851 * Add support for key wrapping modes based on AES as defined by 852 NIST SP 800-38F algorithms KW and KWP and by RFC 3394 and RFC 5649. 853 854Bugfix 855 * Fix the key_app_writer example which was writing a leading zero byte which 856 was creating an invalid ASN.1 tag. Found by Aryeh R. Fixes #1257. 857 * Fix compilation error on C++, because of a variable named new. 858 Found and fixed by Hirotaka Niisato in #1783. 859 * Fix "no symbols" warning issued by ranlib when building on Mac OS X. Fix 860 contributed by tabascoeye. 861 * Clarify documentation for mbedtls_ssl_write() to include 0 as a valid 862 return value. Found by @davidwu2000. #839 863 * Fix a memory leak in mbedtls_x509_csr_parse(), found by catenacyber, 864 Philippe Antoine. Fixes #1623. 865 * Remove unused headers included in x509.c. Found by Chris Hanson and fixed 866 by Brendan Shanks. Part of a fix for #992. 867 * Fix compilation error when MBEDTLS_ARC4_C is disabled and 868 MBEDTLS_CIPHER_NULL_CIPHER is enabled. Found by TrinityTonic in #1719. 869 * Added length checks to some TLS parsing functions. Found and fixed by 870 Philippe Antoine from Catena cyber. #1663. 871 * Fix the inline assembly for the MPI multiply helper function for i386 and 872 i386 with SSE2. Found by László Langó. Fixes #1550 873 * Fix namespacing in header files. Remove the `mbedtls` namespacing in 874 the `#include` in the header files. Resolves #857 875 * Fix compiler warning of 'use before initialisation' in 876 mbedtls_pk_parse_key(). Found by Martin Boye Petersen and fixed by Dawid 877 Drozd. #1098 878 * Fix decryption for zero length messages (which contain all padding) when a 879 CBC based ciphersuite is used together with Encrypt-then-MAC. Previously, 880 such a message was wrongly reported as an invalid record and therefore lead 881 to the connection being terminated. Seen most often with OpenSSL using 882 TLS 1.0. Reported by @kFYatek and by Conor Murphy on the forum. Fix 883 contributed by Espressif Systems. Fixes #1632 884 * Fix ssl_client2 example to send application data with 0-length content 885 when the request_size argument is set to 0 as stated in the documentation. 886 Fixes #1833. 887 * Correct the documentation for `mbedtls_ssl_get_session()`. This API has 888 deep copy of the session, and the peer certificate is not lost. Fixes #926. 889 * Fix build using -std=c99. Fixed by Nick Wilson. 890 891Changes 892 * Fail when receiving a TLS alert message with an invalid length, or invalid 893 zero-length messages when using TLS 1.2. Contributed by Espressif Systems. 894 * Change the default behaviour of mbedtls_hkdf_extract() to return an error 895 when calling with a NULL salt and non-zero salt_len. Contributed by 896 Brian J Murray 897 * Change the shebang line in Perl scripts to look up perl in the PATH. 898 Contributed by fbrosson. 899 * Allow overriding the time on Windows via the platform-time abstraction. 900 Fixed by Nick Wilson. 901 * Use gmtime_r/gmtime_s for thread-safety. Fixed by Nick Wilson. 902 903= mbed TLS 2.11.0 branch released 2018-06-18 904 905Features 906 * Add additional block mode, OFB (Output Feedback), to the AES module and 907 cipher abstraction module. 908 * Implement the HMAC-based extract-and-expand key derivation function 909 (HKDF) per RFC 5869. Contributed by Thomas Fossati. 910 * Add support for the CCM* block cipher mode as defined in IEEE Std. 802.15.4. 911 * Add support for the XTS block cipher mode with AES (AES-XTS). 912 Contributed by Aorimn in pull request #414. 913 * In TLS servers, support offloading private key operations to an external 914 cryptoprocessor. Private key operations can be asynchronous to allow 915 non-blocking operation of the TLS server stack. 916 917Bugfix 918 * Fix the cert_write example to handle certificates signed with elliptic 919 curves as well as RSA. Fixes #777 found by dbedev. 920 * Fix for redefinition of _WIN32_WINNT to avoid overriding a definition 921 used by user applications. Found and fixed by Fabio Alessandrelli. 922 * Fix compilation warnings with IAR toolchain, on 32 bit platform. 923 Reported by rahmanih in #683 924 * Fix braces in mbedtls_memory_buffer_alloc_status(). Found by sbranden, #552. 925 926Changes 927 * Changed CMake defaults for IAR to treat all compiler warnings as errors. 928 * Changed the Clang parameters used in the CMake build files to work for 929 versions later than 3.6. Versions of Clang earlier than this may no longer 930 work. Fixes #1072 931 932= mbed TLS 2.10.0 branch released 2018-06-06 933 934Features 935 * Add support for ARIA cipher (RFC 5794) and associated TLS ciphersuites 936 (RFC 6209). Disabled by default, see MBEDTLS_ARIA_C in config.h 937 938API Changes 939 * Extend the platform module with a util component that contains 940 functionality shared by multiple Mbed TLS modules. At this stage 941 platform_util.h (and its associated platform_util.c) only contain 942 mbedtls_platform_zeroize(), which is a critical function from a security 943 point of view. mbedtls_platform_zeroize() needs to be regularly tested 944 against compilers to ensure that calls to it are not removed from the 945 output binary as part of redundant code elimination optimizations. 946 Therefore, mbedtls_platform_zeroize() is moved to the platform module to 947 facilitate testing and maintenance. 948 949Bugfix 950 * Fix an issue with MicroBlaze support in bn_mul.h which was causing the 951 build to fail. Found by zv-io. Fixes #1651. 952 953Changes 954 * Support TLS testing in out-of-source builds using cmake. Fixes #1193. 955 * Fix redundant declaration of mbedtls_ssl_list_ciphersuites. Raised by 956 TrinityTonic. #1359. 957 958= mbed TLS 2.9.0 branch released 2018-04-30 959 960Security 961 * Fix an issue in the X.509 module which could lead to a buffer overread 962 during certificate validation. Additionally, the issue could also lead to 963 unnecessary callback checks being made or to some validation checks to be 964 omitted. The overread could be triggered remotely, while the other issues 965 would require a non DER-compliant certificate to be correctly signed by a 966 trusted CA, or a trusted CA with a non DER-compliant certificate. Found by 967 luocm. Fixes #825. 968 * Fix the buffer length assertion in the ssl_parse_certificate_request() 969 function which led to an arbitrary overread of the message buffer. The 970 overreads could be caused by receiving a malformed message at the point 971 where an optional signature algorithms list is expected when the signature 972 algorithms section is too short. In builds with debug output, the overread 973 data is output with the debug data. 974 * Fix a client-side bug in the validation of the server's ciphersuite choice 975 which could potentially lead to the client accepting a ciphersuite it didn't 976 offer or a ciphersuite that cannot be used with the TLS or DTLS version 977 chosen by the server. This could lead to corruption of internal data 978 structures for some configurations. 979 980Features 981 * Add an option, MBEDTLS_AES_FEWER_TABLES, to dynamically compute smaller AES 982 tables during runtime, thereby reducing the RAM/ROM footprint by ~6KiB. 983 Suggested and contributed by jkivilin in pull request #394. 984 * Add initial support for Curve448 (RFC 7748). Only mbedtls_ecp_mul() and 985 ECDH primitive functions (mbedtls_ecdh_gen_public(), 986 mbedtls_ecdh_compute_shared()) are supported for now. Contributed by 987 Nicholas Wilson in pull request #348. 988 989API Changes 990 * Extend the public API with the function of mbedtls_net_poll() to allow user 991 applications to wait for a network context to become ready before reading 992 or writing. 993 * Add function mbedtls_ssl_check_pending() to the public API to allow 994 a check for whether more more data is pending to be processed in the 995 internal message buffers. 996 This function is necessary to determine when it is safe to idle on the 997 underlying transport in case event-driven IO is used. 998 999Bugfix 1000 * Fix a spurious uninitialized variable warning in cmac.c. Fix independently 1001 contributed by Brian J Murray and David Brown. 1002 * Add missing dependencies in test suites that led to build failures 1003 in configurations that omit certain hashes or public-key algorithms. 1004 Fixes #1040. 1005 * Fix C89 incompatibility in benchmark.c. Contributed by Brendan Shanks. 1006 #1353 1007 * Add missing dependencies for MBEDTLS_HAVE_TIME_DATE and 1008 MBEDTLS_VERSION_FEATURES in some test suites. Contributed by 1009 Deomid Ryabkov. Fixes #1299, #1475. 1010 * Fix the Makefile build process for building shared libraries on Mac OS X. 1011 Fixed by mnacamura. 1012 * Fix parsing of PKCS#8 encoded Elliptic Curve keys. Previously Mbed TLS was 1013 unable to parse keys which had only the optional parameters field of the 1014 ECPrivateKey structure. Found by Jethro Beekman, fixed in #1379. 1015 * Return the plaintext data more quickly on unpadded CBC decryption, as 1016 stated in the mbedtls_cipher_update() documentation. Contributed by 1017 Andy Leiserson. 1018 * Fix overriding and ignoring return values when parsing and writing to 1019 a file in pk_sign program. Found by kevlut in #1142. 1020 * Restrict usage of error code MBEDTLS_ERR_SSL_WANT_READ to situations 1021 where data needs to be fetched from the underlying transport in order 1022 to make progress. Previously, this error code was also occasionally 1023 returned when unexpected messages were being discarded, ignoring that 1024 further messages could potentially already be pending to be processed 1025 in the internal buffers; these cases led to deadlocks when event-driven 1026 I/O was used. Found and reported by Hubert Mis in #772. 1027 * Fix buffer length assertions in the ssl_parse_certificate_request() 1028 function which leads to a potential one byte overread of the message 1029 buffer. 1030 * Fix invalid buffer sizes passed to zlib during record compression and 1031 decompression. 1032 * Fix the soversion of libmbedcrypto to match the soversion of the 1033 maintained 2.7 branch. The soversion was increased in Mbed TLS 1034 version 2.7.1 to reflect breaking changes in that release, but the 1035 increment was missed in 2.8.0 and later releases outside of the 2.7 branch. 1036 1037Changes 1038 * Remove some redundant code in bignum.c. Contributed by Alexey Skalozub. 1039 * Support cmake builds where Mbed TLS is a subproject. Fix contributed 1040 independently by Matthieu Volat and Arne Schwabe. 1041 * Improve testing in configurations that omit certain hashes or 1042 public-key algorithms. Includes contributions by Gert van Dijk. 1043 * Improve negative testing of X.509 parsing. 1044 * Do not define global mutexes around readdir() and gmtime() in 1045 configurations where the feature is disabled. Found and fixed by Gergely 1046 Budai. 1047 * Harden the function mbedtls_ssl_config_free() against misuse, so that it 1048 doesn't leak memory if the user doesn't use mbedtls_ssl_conf_psk() and 1049 instead incorrectly manipulates the configuration structure directly. 1050 Found and fix submitted by junyeonLEE in #1220. 1051 * Provide an empty implementation of mbedtls_pkcs5_pbes2() when 1052 MBEDTLS_ASN1_PARSE_C is not enabled. This allows the use of PBKDF2 1053 without PBES2. Fixed by Marcos Del Sol Vives. 1054 * Add the order of the base point as N in the mbedtls_ecp_group structure 1055 for Curve25519 (other curves had it already). Contributed by Nicholas 1056 Wilson #481 1057 * Improve the documentation of mbedtls_net_accept(). Contributed by Ivan 1058 Krylov. 1059 * Improve the documentation of mbedtls_ssl_write(). Suggested by 1060 Paul Sokolovsky in #1356. 1061 * Add an option in the Makefile to support ar utilities where the operation 1062 letter must not be prefixed by '-', such as LLVM. Found and fixed by 1063 Alex Hixon. 1064 * Allow configuring the shared library extension by setting the DLEXT 1065 environment variable when using the project makefiles. 1066 * Optimize unnecessary zeroing in mbedtls_mpi_copy. Based on a contribution 1067 by Alexey Skalozub in #405. 1068 * In the SSL module, when f_send, f_recv or f_recv_timeout report 1069 transmitting more than the required length, return an error. Raised by 1070 Sam O'Connor in #1245. 1071 * Improve robustness of mbedtls_ssl_derive_keys against the use of 1072 HMAC functions with non-HMAC ciphersuites. Independently contributed 1073 by Jiayuan Chen in #1377. Fixes #1437. 1074 * Improve security of RSA key generation by including criteria from 1075 FIPS 186-4. Contributed by Jethro Beekman. #1380 1076 * Declare functions in header files even when an alternative implementation 1077 of the corresponding module is activated by defining the corresponding 1078 MBEDTLS_XXX_ALT macro. This means that alternative implementations do 1079 not need to copy the declarations, and ensures that they will have the 1080 same API. 1081 * Add platform setup and teardown calls in test suites. 1082 1083= mbed TLS 2.8.0 branch released 2018-03-16 1084 1085Default behavior changes 1086 * The truncated HMAC extension now conforms to RFC 6066. This means 1087 that when both sides of a TLS connection negotiate the truncated 1088 HMAC extension, Mbed TLS can now interoperate with other 1089 compliant implementations, but this breaks interoperability with 1090 prior versions of Mbed TLS. To restore the old behavior, enable 1091 the (deprecated) option MBEDTLS_SSL_TRUNCATED_HMAC_COMPAT in 1092 config.h. Found by Andreas Walz (ivESK, Offenburg University of 1093 Applied Sciences). 1094 1095Security 1096 * Fix implementation of the truncated HMAC extension. The previous 1097 implementation allowed an offline 2^80 brute force attack on the 1098 HMAC key of a single, uninterrupted connection (with no 1099 resumption of the session). 1100 * Verify results of RSA private key operations to defend 1101 against Bellcore glitch attack. 1102 * Fix a buffer overread in ssl_parse_server_key_exchange() that could cause 1103 a crash on invalid input. 1104 * Fix a buffer overread in ssl_parse_server_psk_hint() that could cause a 1105 crash on invalid input. 1106 * Fix CRL parsing to reject CRLs containing unsupported critical 1107 extensions. Found by Falko Strenzke and Evangelos Karatsiolis. 1108 1109Features 1110 * Extend PKCS#8 interface by introducing support for the entire SHA 1111 algorithms family when encrypting private keys using PKCS#5 v2.0. 1112 This allows reading encrypted PEM files produced by software that 1113 uses PBKDF2-SHA2, such as OpenSSL 1.1. Submitted by Antonio Quartulli, 1114 OpenVPN Inc. Fixes #1339 1115 * Add support for public keys encoded in PKCS#1 format. #1122 1116 1117New deprecations 1118 * Deprecate support for record compression (configuration option 1119 MBEDTLS_ZLIB_SUPPORT). 1120 1121Bugfix 1122 * Fix the name of a DHE parameter that was accidentally changed in 2.7.0. 1123 Fixes #1358. 1124 * Fix test_suite_pk to work on 64-bit ILP32 systems. #849 1125 * Fix mbedtls_x509_crt_profile_suiteb, which used to reject all certificates 1126 with flag MBEDTLS_X509_BADCERT_BAD_PK even when the key type was correct. 1127 In the context of SSL, this resulted in handshake failure. Reported by 1128 daniel in the Mbed TLS forum. #1351 1129 * Fix Windows x64 builds with the included mbedTLS.sln file. #1347 1130 * Fix setting version TLSv1 as minimal version, even if TLS 1 1131 is not enabled. Set MBEDTLS_SSL_MIN_MAJOR_VERSION 1132 and MBEDTLS_SSL_MIN_MINOR_VERSION instead of 1133 MBEDTLS_SSL_MAJOR_VERSION_3 and MBEDTLS_SSL_MINOR_VERSION_1. #664 1134 * Fix compilation error on Mingw32 when _TRUNCATE is defined. Use _TRUNCATE 1135 only if __MINGW32__ not defined. Fix suggested by Thomas Glanzmann and 1136 Nick Wilson on issue #355 1137 * In test_suite_pk, pass valid parameters when testing for hash length 1138 overflow. #1179 1139 * Fix memory allocation corner cases in memory_buffer_alloc.c module. Found 1140 by Guido Vranken. #639 1141 * Log correct number of ciphersuites used in Client Hello message. #918 1142 * Fix X509 CRT parsing that would potentially accept an invalid tag when 1143 parsing the subject alternative names. 1144 * Fix a possible arithmetic overflow in ssl_parse_server_key_exchange() 1145 that could cause a key exchange to fail on valid data. 1146 * Fix a possible arithmetic overflow in ssl_parse_server_psk_hint() that 1147 could cause a key exchange to fail on valid data. 1148 * Don't define mbedtls_aes_decrypt and mbedtls_aes_encrypt under 1149 MBEDTLS_DEPRECATED_REMOVED. #1388 1150 * Fix a 1-byte heap buffer overflow (read-only) during private key parsing. 1151 Found through fuzz testing. 1152 1153Changes 1154 * Fix tag lengths and value ranges in the documentation of CCM encryption. 1155 Contributed by Mathieu Briand. 1156 * Fix typo in a comment ctr_drbg.c. Contributed by Paul Sokolovsky. 1157 * Remove support for the library reference configuration for picocoin. 1158 * MD functions deprecated in 2.7.0 are no longer inline, to provide 1159 a migration path for those depending on the library's ABI. 1160 * Clarify the documentation of mbedtls_ssl_setup. 1161 * Use (void) when defining functions with no parameters. Contributed by 1162 Joris Aerts. #678 1163 1164= mbed TLS 2.7.0 branch released 2018-02-03 1165 1166Security 1167 * Fix a heap corruption issue in the implementation of the truncated HMAC 1168 extension. When the truncated HMAC extension is enabled and CBC is used, 1169 sending a malicious application packet could be used to selectively corrupt 1170 6 bytes on the peer's heap, which could potentially lead to crash or remote 1171 code execution. The issue could be triggered remotely from either side in 1172 both TLS and DTLS. CVE-2018-0488 1173 * Fix a buffer overflow in RSA-PSS verification when the hash was too large 1174 for the key size, which could potentially lead to crash or remote code 1175 execution. Found by Seth Terashima, Qualcomm Product Security Initiative, 1176 Qualcomm Technologies Inc. CVE-2018-0487 1177 * Fix buffer overflow in RSA-PSS verification when the unmasked data is all 1178 zeros. 1179 * Fix an unsafe bounds check in ssl_parse_client_psk_identity() when adding 1180 64 KiB to the address of the SSL buffer and causing a wrap around. 1181 * Fix a potential heap buffer overflow in mbedtls_ssl_write(). When the (by 1182 default enabled) maximum fragment length extension is disabled in the 1183 config and the application data buffer passed to mbedtls_ssl_write 1184 is larger than the internal message buffer (16384 bytes by default), the 1185 latter overflows. The exploitability of this issue depends on whether the 1186 application layer can be forced into sending such large packets. The issue 1187 was independently reported by Tim Nordell via e-mail and by Florin Petriuc 1188 and sjorsdewit on GitHub. Fix proposed by Florin Petriuc in #1022. 1189 Fixes #707. 1190 * Add a provision to prevent compiler optimizations breaking the time 1191 constancy of mbedtls_ssl_safer_memcmp(). 1192 * Ensure that buffers are cleared after use if they contain sensitive data. 1193 Changes were introduced in multiple places in the library. 1194 * Set PEM buffer to zero before freeing it, to avoid decoded private keys 1195 being leaked to memory after release. 1196 * Fix dhm_check_range() failing to detect trivial subgroups and potentially 1197 leaking 1 bit of the private key. Reported by prashantkspatil. 1198 * Make mbedtls_mpi_read_binary() constant-time with respect to the input 1199 data. Previously, trailing zero bytes were detected and omitted for the 1200 sake of saving memory, but potentially leading to slight timing 1201 differences. Reported by Marco Macchetti, Kudelski Group. 1202 * Wipe stack buffer temporarily holding EC private exponent 1203 after keypair generation. 1204 * Fix a potential heap buffer over-read in ALPN extension parsing 1205 (server-side). Could result in application crash, but only if an ALPN 1206 name larger than 16 bytes had been configured on the server. 1207 * Change default choice of DHE parameters from untrustworthy RFC 5114 1208 to RFC 3526 containing parameters generated in a nothing-up-my-sleeve 1209 manner. 1210 1211Features 1212 * Allow comments in test data files. 1213 * The selftest program can execute a subset of the tests based on command 1214 line arguments. 1215 * New unit tests for timing. Improve the self-test to be more robust 1216 when run on a heavily-loaded machine. 1217 * Add alternative implementation support for CCM and CMAC (MBEDTLS_CCM_ALT, 1218 MBEDTLS_CMAC_ALT). Submitted by Steven Cooreman, Silicon Labs. 1219 * Add support for alternative implementations of GCM, selected by the 1220 configuration flag MBEDTLS_GCM_ALT. 1221 * Add support for alternative implementations for ECDSA, controlled by new 1222 configuration flags MBEDTLS_ECDSA_SIGN_ALT, MBEDTLS_ECDSA_VERIFY_ALT and 1223 MBEDTLS_ECDSDA_GENKEY_AT in config.h. 1224 The following functions from the ECDSA module can be replaced 1225 with alternative implementation: 1226 mbedtls_ecdsa_sign(), mbedtls_ecdsa_verify() and mbedtls_ecdsa_genkey(). 1227 * Add support for alternative implementation of ECDH, controlled by the 1228 new configuration flags MBEDTLS_ECDH_COMPUTE_SHARED_ALT and 1229 MBEDTLS_ECDH_GEN_PUBLIC_ALT in config.h. 1230 The following functions from the ECDH module can be replaced 1231 with an alternative implementation: 1232 mbedtls_ecdh_gen_public() and mbedtls_ecdh_compute_shared(). 1233 * Add support for alternative implementation of ECJPAKE, controlled by 1234 the new configuration flag MBEDTLS_ECJPAKE_ALT. 1235 * Add mechanism to provide alternative implementation of the DHM module. 1236 1237API Changes 1238 * Extend RSA interface by multiple functions allowing structure- 1239 independent setup and export of RSA contexts. Most notably, 1240 mbedtls_rsa_import() and mbedtls_rsa_complete() are introduced for setting 1241 up RSA contexts from partial key material and having them completed to the 1242 needs of the implementation automatically. This allows to setup private RSA 1243 contexts from keys consisting of N,D,E only, even if P,Q are needed for the 1244 purpose or CRT and/or blinding. 1245 * The configuration option MBEDTLS_RSA_ALT can be used to define alternative 1246 implementations of the RSA interface declared in rsa.h. 1247 * The following functions in the message digest modules (MD2, MD4, MD5, 1248 SHA1, SHA256, SHA512) have been deprecated and replaced as shown below. 1249 The new functions change the return type from void to int to allow 1250 returning error codes when using MBEDTLS_<MODULE>_ALT. 1251 mbedtls_<MODULE>_starts() -> mbedtls_<MODULE>_starts_ret() 1252 mbedtls_<MODULE>_update() -> mbedtls_<MODULE>_update_ret() 1253 mbedtls_<MODULE>_finish() -> mbedtls_<MODULE>_finish_ret() 1254 mbedtls_<MODULE>_process() -> mbedtls_internal_<MODULE>_process() 1255 1256New deprecations 1257 * Deprecate usage of RSA primitives with non-matching key-type 1258 (e.g. signing with a public key). 1259 * Direct manipulation of structure fields of RSA contexts is deprecated. 1260 Users are advised to use the extended RSA API instead. 1261 * Deprecate usage of message digest functions that return void 1262 (mbedtls_<MODULE>_starts, mbedtls_<MODULE>_update, 1263 mbedtls_<MODULE>_finish and mbedtls_<MODULE>_process where <MODULE> is 1264 any of MD2, MD4, MD5, SHA1, SHA256, SHA512) in favor of functions 1265 that can return an error code. 1266 * Deprecate untrustworthy DHE parameters from RFC 5114. Superseded by 1267 parameters from RFC 3526 or the newly added parameters from RFC 7919. 1268 * Deprecate hex string DHE constants MBEDTLS_DHM_RFC3526_MODP_2048_P etc. 1269 Supserseded by binary encoded constants MBEDTLS_DHM_RFC3526_MODP_2048_P_BIN 1270 etc. 1271 * Deprecate mbedtls_ssl_conf_dh_param() for setting default DHE parameters 1272 from hex strings. Superseded by mbedtls_ssl_conf_dh_param_bin() 1273 accepting DHM parameters in binary form, matching the new constants. 1274 1275Bugfix 1276 * Fix ssl_parse_record_header() to silently discard invalid DTLS records 1277 as recommended in RFC 6347 Section 4.1.2.7. 1278 * Fix memory leak in mbedtls_ssl_set_hostname() when called multiple times. 1279 Found by projectgus and Jethro Beekman, #836. 1280 * Fix usage help in ssl_server2 example. Found and fixed by Bei Lin. 1281 * Parse signature algorithm extension when renegotiating. Previously, 1282 renegotiated handshakes would only accept signatures using SHA-1 1283 regardless of the peer's preferences, or fail if SHA-1 was disabled. 1284 * Fix leap year calculation in x509_date_is_valid() to ensure that invalid 1285 dates on leap years with 100 and 400 intervals are handled correctly. Found 1286 by Nicholas Wilson. #694 1287 * Fix some invalid RSA-PSS signatures with keys of size 8N+1 that were 1288 accepted. Generating these signatures required the private key. 1289 * Fix out-of-memory problem when parsing 4096-bit PKCS8-encrypted RSA keys. 1290 Found independently by Florian in the mbed TLS forum and by Mishamax. 1291 #878, #1019. 1292 * Fix variable used before assignment compilation warnings with IAR 1293 toolchain. Found by gkerrien38. 1294 * Fix unchecked return codes from AES, DES and 3DES functions in 1295 pem_aes_decrypt(), pem_des_decrypt() and pem_des3_decrypt() respectively. 1296 If a call to one of the functions of the cryptographic primitive modules 1297 failed, the error may not be noticed by the function 1298 mbedtls_pem_read_buffer() causing it to return invalid values. Found by 1299 Guido Vranken. #756 1300 * Include configuration file in md.h, to fix compilation warnings. 1301 Reported by aaronmdjones in #1001 1302 * Correct extraction of signature-type from PK instance in X.509 CRT and CSR 1303 writing routines that prevented these functions to work with alternative 1304 RSA implementations. Raised by J.B. in the Mbed TLS forum. Fixes #1011. 1305 * Don't print X.509 version tag for v1 CRT's, and omit extensions for 1306 non-v3 CRT's. 1307 * Fix bugs in RSA test suite under MBEDTLS_NO_PLATFORM_ENTROPY. #1023 #1024 1308 * Fix net_would_block() to avoid modification by errno through fcntl() call. 1309 Found by nkolban. Fixes #845. 1310 * Fix handling of handshake messages in mbedtls_ssl_read() in case 1311 MBEDTLS_SSL_RENEGOTIATION is disabled. Found by erja-gp. 1312 * Add a check for invalid private parameters in mbedtls_ecdsa_sign(). 1313 Reported by Yolan Romailler. 1314 * Fix word size check in in pk.c to not depend on MBEDTLS_HAVE_INT64. 1315 * Fix incorrect unit in benchmark output. #850 1316 * Add size-checks for record and handshake message content, securing 1317 fragile yet non-exploitable code-paths. 1318 * Fix crash when calling mbedtls_ssl_cache_free() twice. Found by 1319 MilenkoMitrovic, #1104 1320 * Fix mbedtls_timing_alarm(0) on Unix and MinGW. 1321 * Fix use of uninitialized memory in mbedtls_timing_get_timer() when reset=1. 1322 * Fix possible memory leaks in mbedtls_gcm_self_test(). 1323 * Added missing return code checks in mbedtls_aes_self_test(). 1324 * Fix issues in RSA key generation program programs/x509/rsa_genkey and the 1325 RSA test suite where the failure of CTR DRBG initialization lead to 1326 freeing an RSA context and several MPI's without proper initialization 1327 beforehand. 1328 * Fix error message in programs/pkey/gen_key.c. Found and fixed by Chris Xue. 1329 * Fix programs/pkey/dh_server.c so that it actually works with dh_client.c. 1330 Found and fixed by Martijn de Milliano. 1331 * Fix an issue in the cipher decryption with the mode 1332 MBEDTLS_PADDING_ONE_AND_ZEROS that sometimes accepted invalid padding. 1333 Note, this padding mode is not used by the TLS protocol. Found and fixed by 1334 Micha Kraus. 1335 * Fix the entropy.c module to not call mbedtls_sha256_starts() or 1336 mbedtls_sha512_starts() in the mbedtls_entropy_init() function. 1337 * Fix the entropy.c module to ensure that mbedtls_sha256_init() or 1338 mbedtls_sha512_init() is called before operating on the relevant context 1339 structure. Do not assume that zeroizing a context is a correct way to 1340 reset it. Found independently by ccli8 on Github. 1341 * In mbedtls_entropy_free(), properly free the message digest context. 1342 * Fix status handshake status message in programs/ssl/dtls_client.c. Found 1343 and fixed by muddog. 1344 1345Changes 1346 * Extend cert_write example program by options to set the certificate version 1347 and the message digest. Further, allow enabling/disabling of authority 1348 identifier, subject identifier and basic constraints extensions. 1349 * Only check for necessary RSA structure fields in `mbedtls_rsa_private`. In 1350 particular, don't require P,Q if neither CRT nor blinding are 1351 used. Reported and fix proposed independently by satur9nine and sliai 1352 on GitHub. 1353 * Only run AES-192 self-test if AES-192 is available. Fixes #963. 1354 * Tighten the RSA PKCS#1 v1.5 signature verification code and remove the 1355 undeclared dependency of the RSA module on the ASN.1 module. 1356 * Update all internal usage of deprecated message digest functions to the 1357 new ones with return codes. In particular, this modifies the 1358 mbedtls_md_info_t structure. Propagate errors from these functions 1359 everywhere except some locations in the ssl_tls.c module. 1360 * Improve CTR_DRBG error handling by propagating underlying AES errors. 1361 * Add MBEDTLS_ERR_XXX_HW_ACCEL_FAILED error codes for all cryptography 1362 modules where the software implementation can be replaced by a hardware 1363 implementation. 1364 * Add explicit warnings for the use of MD2, MD4, MD5, SHA-1, DES and ARC4 1365 throughout the library. 1366 1367= mbed TLS 2.6.0 branch released 2017-08-10 1368 1369Security 1370 * Fix authentication bypass in SSL/TLS: when authmode is set to optional, 1371 mbedtls_ssl_get_verify_result() would incorrectly return 0 when the peer's 1372 X.509 certificate chain had more than MBEDTLS_X509_MAX_INTERMEDIATE_CA 1373 (default: 8) intermediates, even when it was not trusted. This could be 1374 triggered remotely from either side. (With authmode set to 'required' 1375 (the default), the handshake was correctly aborted). 1376 * Reliably wipe sensitive data after use in the AES example applications 1377 programs/aes/aescrypt2 and programs/aes/crypt_and_hash. 1378 Found by Laurent Simon. 1379 1380Features 1381 * Add the functions mbedtls_platform_setup() and mbedtls_platform_teardown() 1382 and the context struct mbedtls_platform_context to perform 1383 platform-specific setup and teardown operations. The macro 1384 MBEDTLS_PLATFORM_SETUP_TEARDOWN_ALT allows the functions to be overridden 1385 by the user in a platform_alt.h file. These new functions are required in 1386 some embedded environments to provide a means of initialising underlying 1387 cryptographic acceleration hardware. 1388 1389API Changes 1390 * Reverted API/ABI breaking changes introduced in mbed TLS 2.5.1, to make the 1391 API consistent with mbed TLS 2.5.0. Specifically removed the inline 1392 qualifier from the functions mbedtls_aes_decrypt, mbedtls_aes_encrypt, 1393 mbedtls_ssl_ciphersuite_uses_ec and mbedtls_ssl_ciphersuite_uses_psk. Found 1394 by James Cowgill. #978 1395 * Certificate verification functions now set flags to -1 in case the full 1396 chain was not verified due to an internal error (including in the verify 1397 callback) or chain length limitations. 1398 * With authmode set to optional, the TLS handshake is now aborted if the 1399 verification of the peer's certificate failed due to an overlong chain or 1400 a fatal error in the verify callback. 1401 1402Bugfix 1403 * Add a check if iv_len is zero in GCM, and return an error if it is zero. 1404 Reported by roberto. #716 1405 * Replace preprocessor condition from #if defined(MBEDTLS_THREADING_PTHREAD) 1406 to #if defined(MBEDTLS_THREADING_C) as the library cannot assume they will 1407 always be implemented by pthread support. #696 1408 * Fix a resource leak on Windows platforms in mbedtls_x509_crt_parse_path(), 1409 in the case of an error. Found by redplait. #590 1410 * Add MBEDTLS_MPI_CHK to check for error value of mbedtls_mpi_fill_random. 1411 Reported and fix suggested by guidovranken. #740 1412 * Fix conditional preprocessor directives in bignum.h to enable 64-bit 1413 compilation when using ARM Compiler 6. 1414 * Fix a potential integer overflow in the version verification for DER 1415 encoded X.509 CRLs. The overflow could enable maliciously constructed CRLs 1416 to bypass the version verification check. Found by Peng Li/Yueh-Hsun Lin, 1417 KNOX Security, Samsung Research America 1418 * Fix potential integer overflow in the version verification for DER 1419 encoded X.509 CSRs. The overflow could enable maliciously constructed CSRs 1420 to bypass the version verification check. Found by Peng Li/Yueh-Hsun Lin, 1421 KNOX Security, Samsung Research America 1422 * Fix a potential integer overflow in the version verification for DER 1423 encoded X.509 certificates. The overflow could enable maliciously 1424 constructed certificates to bypass the certificate verification check. 1425 * Fix a call to the libc function time() to call the platform abstraction 1426 function mbedtls_time() instead. Found by wairua. #666 1427 * Avoid shadowing of time and index functions through mbed TLS function 1428 arguments. Found by inestlerode. #557. 1429 1430Changes 1431 * Added config.h option MBEDTLS_NO_UDBL_DIVISION, to prevent the use of 1432 64-bit division. This is useful on embedded platforms where 64-bit division 1433 created a dependency on external libraries. #708 1434 * Removed mutexes from ECP hardware accelerator code. Now all hardware 1435 accelerator code in the library leaves concurrency handling to the 1436 platform. Reported by Steven Cooreman. #863 1437 * Define the macro MBEDTLS_AES_ROM_TABLES in the configuration file 1438 config-no-entropy.h to reduce the RAM footprint. 1439 * Added a test script that can be hooked into git that verifies commits 1440 before they are pushed. 1441 * Improve documentation of PKCS1 decryption functions. 1442 1443= mbed TLS 2.5.1 released 2017-06-21 1444 1445Security 1446 * Fixed unlimited overread of heap-based buffer in mbedtls_ssl_read(). 1447 The issue could only happen client-side with renegotiation enabled. 1448 Could result in DoS (application crash) or information leak 1449 (if the application layer sent data read from mbedtls_ssl_read() 1450 back to the server or to a third party). Can be triggered remotely. 1451 * Removed SHA-1 and RIPEMD-160 from the default hash algorithms for 1452 certificate verification. SHA-1 can be turned back on with a compile-time 1453 option if needed. 1454 * Fixed offset in FALLBACK_SCSV parsing that caused TLS server to fail to 1455 detect it sometimes. Reported by Hugo Leisink. #810 1456 * Tighten parsing of RSA PKCS#1 v1.5 signatures, to avoid a 1457 potential Bleichenbacher/BERserk-style attack. 1458 1459Bugfix 1460 * Remove size zero arrays from ECJPAKE test suite. Size zero arrays are not 1461 valid C and they prevented the test from compiling in Visual Studio 2015 1462 and with GCC using the -Wpedantic compilation option. 1463 * Fix insufficient support for signature-hash-algorithm extension, 1464 resulting in compatibility problems with Chrome. Found by hfloyrd. #823 1465 * Fix behaviour that hid the original cause of fatal alerts in some cases 1466 when sending the alert failed. The fix makes sure not to hide the error 1467 that triggered the alert. 1468 * Fix SSLv3 renegotiation behaviour and stop processing data received from 1469 peer after sending a fatal alert to refuse a renegotiation attempt. 1470 Previous behaviour was to keep processing data even after the alert has 1471 been sent. 1472 * Accept empty trusted CA chain in authentication mode 1473 MBEDTLS_SSL_VERIFY_OPTIONAL. Found by Jethro Beekman. #864 1474 * Fix implementation of mbedtls_ssl_parse_certificate() to not annihilate 1475 fatal errors in authentication mode MBEDTLS_SSL_VERIFY_OPTIONAL and to 1476 reflect bad EC curves within verification result. 1477 * Fix bug that caused the modular inversion function to accept the invalid 1478 modulus 1 and therefore to hang. Found by blaufish. #641. 1479 * Fix incorrect sign computation in modular exponentiation when the base is 1480 a negative MPI. Previously the result was always negative. Found by Guido 1481 Vranken. 1482 * Fix a numerical underflow leading to stack overflow in mpi_read_file() 1483 that was triggered uppon reading an empty line. Found by Guido Vranken. 1484 1485Changes 1486 * Send fatal alerts in more cases. The previous behaviour was to skip 1487 sending the fatal alert and just drop the connection. 1488 * Clarify ECDSA documentation and improve the sample code to avoid 1489 misunderstanding and potentially dangerous use of the API. Pointed out 1490 by Jean-Philippe Aumasson. 1491 1492= mbed TLS 2.5.0 branch released 2017-05-17 1493 1494Security 1495 * Wipe stack buffers in RSA private key operations 1496 (rsa_rsaes_pkcs1_v15_decrypt(), rsa_rsaes_oaep_decrypt). Found by Laurent 1497 Simon. 1498 * Add exponent blinding to RSA private operations as a countermeasure 1499 against side-channel attacks like the cache attack described in 1500 https://arxiv.org/abs/1702.08719v2. 1501 Found and fix proposed by Michael Schwarz, Samuel Weiser, Daniel Gruss, 1502 Clémentine Maurice and Stefan Mangard. 1503 1504Features 1505 * Add hardware acceleration support for the Elliptic Curve Point module. 1506 This involved exposing parts of the internal interface to enable 1507 replacing the core functions and adding and alternative, module level 1508 replacement support for enabling the extension of the interface. 1509 * Add a new configuration option to 'mbedtls_ssl_config' to enable 1510 suppressing the CA list in Certificate Request messages. The default 1511 behaviour has not changed, namely every configured CAs name is included. 1512 1513API Changes 1514 * The following functions in the AES module have been deprecated and replaced 1515 by the functions shown below. The new functions change the return type from 1516 void to int to allow returning error codes when using MBEDTLS_AES_ALT, 1517 MBEDTLS_AES_DECRYPT_ALT or MBEDTLS_AES_ENCRYPT_ALT. 1518 mbedtls_aes_decrypt() -> mbedtls_internal_aes_decrypt() 1519 mbedtls_aes_encrypt() -> mbedtls_internal_aes_encrypt() 1520 1521Bugfix 1522 * Remove macros from compat-1.3.h that correspond to deleted items from most 1523 recent versions of the library. Found by Kyle Keen. 1524 * Fixed issue in the Threading module that prevented mutexes from 1525 initialising. Found by sznaider. #667 #843 1526 * Add checks in the PK module for the RSA functions on 64-bit systems. 1527 The PK and RSA modules use different types for passing hash length and 1528 without these checks the type cast could lead to data loss. Found by Guido 1529 Vranken. 1530 1531= mbed TLS 2.4.2 branch released 2017-03-08 1532 1533Security 1534 * Add checks to prevent signature forgeries for very large messages while 1535 using RSA through the PK module in 64-bit systems. The issue was caused by 1536 some data loss when casting a size_t to an unsigned int value in the 1537 functions rsa_verify_wrap(), rsa_sign_wrap(), rsa_alt_sign_wrap() and 1538 mbedtls_pk_sign(). Found by Jean-Philippe Aumasson. 1539 * Fixed potential livelock during the parsing of a CRL in PEM format in 1540 mbedtls_x509_crl_parse(). A string containing a CRL followed by trailing 1541 characters after the footer could result in the execution of an infinite 1542 loop. The issue can be triggered remotely. Found by Greg Zaverucha, 1543 Microsoft. 1544 * Removed MD5 from the allowed hash algorithms for CertificateRequest and 1545 CertificateVerify messages, to prevent SLOTH attacks against TLS 1.2. 1546 Introduced by interoperability fix for #513. 1547 * Fixed a bug that caused freeing a buffer that was allocated on the stack, 1548 when verifying the validity of a key on secp224k1. This could be 1549 triggered remotely for example with a maliciously constructed certificate 1550 and potentially could lead to remote code execution on some platforms. 1551 Reported independently by rongsaws and Aleksandar Nikolic, Cisco Talos 1552 team. #569 CVE-2017-2784 1553 1554Bugfix 1555 * Fix output certificate verification flags set by x509_crt_verify_top() when 1556 traversing a chain of trusted CA. The issue would cause both flags, 1557 MBEDTLS_X509_BADCERT_NOT_TRUSTED and MBEDTLS_X509_BADCERT_EXPIRED, to be 1558 set when the verification conditions are not met regardless of the cause. 1559 Found by Harm Verhagen and inestlerode. #665 #561 1560 * Fix the redefinition of macro ssl_set_bio to an undefined symbol 1561 mbedtls_ssl_set_bio_timeout in compat-1.3.h, by removing it. 1562 Found by omlib-lin. #673 1563 * Fix unused variable/function compilation warnings in pem.c, x509_crt.c and 1564 x509_csr.c that are reported when building mbed TLS with a config.h that 1565 does not define MBEDTLS_PEM_PARSE_C. Found by omnium21. #562 1566 * Fix incorrect renegotiation condition in ssl_check_ctr_renegotiate() that 1567 would compare 64 bits of the record counter instead of 48 bits as indicated 1568 in RFC 6347 Section 4.3.1. This could cause the execution of the 1569 renegotiation routines at unexpected times when the protocol is DTLS. Found 1570 by wariua. #687 1571 * Fixed multiple buffer overreads in mbedtls_pem_read_buffer() when parsing 1572 the input string in PEM format to extract the different components. Found 1573 by Eyal Itkin. 1574 * Fixed potential arithmetic overflow in mbedtls_ctr_drbg_reseed() that could 1575 cause buffer bound checks to be bypassed. Found by Eyal Itkin. 1576 * Fixed potential arithmetic overflows in mbedtls_cipher_update() that could 1577 cause buffer bound checks to be bypassed. Found by Eyal Itkin. 1578 * Fixed potential arithmetic overflow in mbedtls_md2_update() that could 1579 cause buffer bound checks to be bypassed. Found by Eyal Itkin. 1580 * Fixed potential arithmetic overflow in mbedtls_base64_decode() that could 1581 cause buffer bound checks to be bypassed. Found by Eyal Itkin. 1582 * Fixed heap overreads in mbedtls_x509_get_time(). Found by Peng 1583 Li/Yueh-Hsun Lin, KNOX Security, Samsung Research America. 1584 * Fix potential memory leak in mbedtls_x509_crl_parse(). The leak was caused 1585 by missing calls to mbedtls_pem_free() in cases when a 1586 MBEDTLS_ERR_PEM_NO_HEADER_FOOTER_PRESENT error was encountered. Found and 1587 fix proposed by Guido Vranken. #722 1588 * Fixed the templates used to generate project and solution files for Visual 1589 Studio 2015 as well as the files themselves, to remove a build warning 1590 generated in Visual Studio 2015. Reported by Steve Valliere. #742 1591 * Fix a resource leak in ssl_cookie, when using MBEDTLS_THREADING_C. 1592 Raised and fix suggested by Alan Gillingham in the mbed TLS forum. #771 1593 * Fix 1 byte buffer overflow in mbedtls_mpi_write_string() when the MPI 1594 number to write in hexadecimal is negative and requires an odd number of 1595 digits. Found and fixed by Guido Vranken. 1596 * Fix unlisted DES configuration dependency in some pkparse test cases. Found 1597 by inestlerode. #555 1598 1599= mbed TLS 2.4.1 branch released 2016-12-13 1600 1601Changes 1602 * Update to CMAC test data, taken from - NIST Special Publication 800-38B - 1603 Recommendation for Block Cipher Modes of Operation: The CMAC Mode for 1604 Authentication – October 2016 1605 1606= mbed TLS 2.4.0 branch released 2016-10-17 1607 1608Security 1609 * Removed the MBEDTLS_SSL_AEAD_RANDOM_IV option, because it was not compliant 1610 with RFC-5116 and could lead to session key recovery in very long TLS 1611 sessions. "Nonce-Disrespecting Adversaries Practical Forgery Attacks on GCM in 1612 TLS" - H. Bock, A. Zauner, S. Devlin, J. Somorovsky, P. Jovanovic. 1613 https://eprint.iacr.org/2016/475.pdf 1614 * Fixed potential stack corruption in mbedtls_x509write_crt_der() and 1615 mbedtls_x509write_csr_der() when the signature is copied to the buffer 1616 without checking whether there is enough space in the destination. The 1617 issue cannot be triggered remotely. Found by Jethro Beekman. 1618 1619Features 1620 * Added support for CMAC for AES and 3DES and AES-CMAC-PRF-128, as defined by 1621 NIST SP 800-38B, RFC-4493 and RFC-4615. 1622 * Added hardware entropy selftest to verify that the hardware entropy source 1623 is functioning correctly. 1624 * Added a script to print build environment info for diagnostic use in test 1625 scripts, which is also now called by all.sh. 1626 * Added the macro MBEDTLS_X509_MAX_FILE_PATH_LEN that enables the user to 1627 configure the maximum length of a file path that can be buffered when 1628 calling mbedtls_x509_crt_parse_path(). 1629 * Added a configuration file config-no-entropy.h that configures the subset of 1630 library features that do not require an entropy source. 1631 * Added the macro MBEDTLS_ENTROPY_MIN_HARDWARE in config.h. This allows users 1632 to configure the minimum number of bytes for entropy sources using the 1633 mbedtls_hardware_poll() function. 1634 1635Bugfix 1636 * Fix for platform time abstraction to avoid dependency issues where a build 1637 may need time but not the standard C library abstraction, and added 1638 configuration consistency checks to check_config.h 1639 * Fix dependency issue in Makefile to allow parallel builds. 1640 * Fix incorrect handling of block lengths in crypt_and_hash.c sample program, 1641 when GCM is used. Found by udf2457. #441 1642 * Fix for key exchanges based on ECDH-RSA or ECDH-ECDSA which weren't 1643 enabled unless others were also present. Found by David Fernandez. #428 1644 * Fix for out-of-tree builds using CMake. Found by jwurzer, and fix based on 1645 a contribution from Tobias Tangemann. #541 1646 * Fixed cert_app.c sample program for debug output and for use when no root 1647 certificates are provided. 1648 * Fix conditional statement that would cause a 1 byte overread in 1649 mbedtls_asn1_get_int(). Found and fixed by Guido Vranken. #599 1650 * Fixed pthread implementation to avoid unintended double initialisations 1651 and double frees. Found by Niklas Amnebratt. 1652 * Fixed the sample applications gen_key.c, cert_req.c and cert_write.c for 1653 builds where the configuration MBEDTLS_PEM_WRITE_C is not defined. Found 1654 by inestlerode. #559. 1655 * Fix mbedtls_x509_get_sig() to update the ASN1 type in the mbedtls_x509_buf 1656 data structure until after error checks are successful. Found by 1657 subramanyam-c. #622 1658 * Fix documentation and implementation missmatch for function arguments of 1659 mbedtls_gcm_finish(). Found by cmiatpaar. #602 1660 * Guarantee that P>Q at RSA key generation. Found by inestlerode. #558 1661 * Fix potential byte overread when verifying malformed SERVER_HELLO in 1662 ssl_parse_hello_verify_request() for DTLS. Found by Guido Vranken. 1663 * Fix check for validity of date when parsing in mbedtls_x509_get_time(). 1664 Found by subramanyam-c. #626 1665 * Fix compatibility issue with Internet Explorer client authentication, 1666 where the limited hash choices prevented the client from sending its 1667 certificate. Found by teumas. #513 1668 * Fix compilation without MBEDTLS_SELF_TEST enabled. 1669 1670Changes 1671 * Extended test coverage of special cases, and added new timing test suite. 1672 * Removed self-tests from the basic-built-test.sh script, and added all 1673 missing self-tests to the test suites, to ensure self-tests are only 1674 executed once. 1675 * Added support for 3 and 4 byte lengths to mbedtls_asn1_write_len(). 1676 * Added support for a Yotta specific configuration file - 1677 through the symbol YOTTA_CFG_MBEDTLS_TARGET_CONFIG_FILE. 1678 * Added optimization for code space for X.509/OID based on configured 1679 features. Contributed by Aviv Palivoda. 1680 * Renamed source file library/net.c to library/net_sockets.c to avoid 1681 naming collision in projects which also have files with the common name 1682 net.c. For consistency, the corresponding header file, net.h, is marked as 1683 deprecated, and its contents moved to net_sockets.h. 1684 * Changed the strategy for X.509 certificate parsing and validation, to no 1685 longer disregard certificates with unrecognised fields. 1686 1687= mbed TLS 2.3.0 branch released 2016-06-28 1688 1689Security 1690 * Fix missing padding length check in mbedtls_rsa_rsaes_pkcs1_v15_decrypt 1691 required by PKCS1 v2.2 1692 * Fix potential integer overflow to buffer overflow in 1693 mbedtls_rsa_rsaes_pkcs1_v15_encrypt and mbedtls_rsa_rsaes_oaep_encrypt 1694 (not triggerable remotely in (D)TLS). 1695 * Fix a potential integer underflow to buffer overread in 1696 mbedtls_rsa_rsaes_oaep_decrypt. It is not triggerable remotely in 1697 SSL/TLS. 1698 1699Features 1700 * Support for platform abstraction of the standard C library time() 1701 function. 1702 1703Bugfix 1704 * Fix bug in mbedtls_mpi_add_mpi() that caused wrong results when the three 1705 arguments where the same (in-place doubling). Found and fixed by Janos 1706 Follath. #309 1707 * Fix potential build failures related to the 'apidoc' target, introduced 1708 in the previous patch release. Found by Robert Scheck. #390 #391 1709 * Fix issue in Makefile that prevented building using armar. #386 1710 * Fix memory leak that occurred only when ECJPAKE was enabled and ECDHE and 1711 ECDSA was disabled in config.h . The leak didn't occur by default. 1712 * Fix an issue that caused valid certificates to be rejected whenever an 1713 expired or not yet valid certificate was parsed before a valid certificate 1714 in the trusted certificate list. 1715 * Fix bug in mbedtls_x509_crt_parse that caused trailing extra data in the 1716 buffer after DER certificates to be included in the raw representation. 1717 * Fix issue that caused a hang when generating RSA keys of odd bitlength 1718 * Fix bug in mbedtls_rsa_rsaes_pkcs1_v15_encrypt that made null pointer 1719 dereference possible. 1720 * Fix issue that caused a crash if invalid curves were passed to 1721 mbedtls_ssl_conf_curves. #373 1722 * Fix issue in ssl_fork_server which was preventing it from functioning. #429 1723 * Fix memory leaks in test framework 1724 * Fix test in ssl-opt.sh that does not run properly with valgrind 1725 * Fix unchecked calls to mmbedtls_md_setup(). Fix by Brian Murray. #502 1726 1727Changes 1728 * On ARM platforms, when compiling with -O0 with GCC, Clang or armcc5, 1729 don't use the optimized assembly for bignum multiplication. This removes 1730 the need to pass -fomit-frame-pointer to avoid a build error with -O0. 1731 * Disabled SSLv3 in the default configuration. 1732 * Optimized mbedtls_mpi_zeroize() for MPI integer size. (Fix by Alexey 1733 Skalozub). 1734 * Fix non-compliance server extension handling. Extensions for SSLv3 are now 1735 ignored, as required by RFC6101. 1736 1737= mbed TLS 2.2.1 released 2016-01-05 1738 1739Security 1740 * Fix potential double free when mbedtls_asn1_store_named_data() fails to 1741 allocate memory. Only used for certificate generation, not triggerable 1742 remotely in SSL/TLS. Found by Rafał Przywara. #367 1743 * Disable MD5 handshake signatures in TLS 1.2 by default to prevent the 1744 SLOTH attack on TLS 1.2 server authentication (other attacks from the 1745 SLOTH paper do not apply to any version of mbed TLS or PolarSSL). 1746 https://www.mitls.org/pages/attacks/SLOTH 1747 1748Bugfix 1749 * Fix over-restrictive length limit in GCM. Found by Andreas-N. #362 1750 * Fix bug in certificate validation that caused valid chains to be rejected 1751 when the first intermediate certificate has pathLenConstraint=0. Found by 1752 Nicholas Wilson. Introduced in mbed TLS 2.2.0. #280 1753 * Removed potential leak in mbedtls_rsa_rsassa_pkcs1_v15_sign(), found by 1754 JayaraghavendranK. #372 1755 * Fix suboptimal handling of unexpected records that caused interop issues 1756 with some peers over unreliable links. Avoid dropping an entire DTLS 1757 datagram if a single record in a datagram is unexpected, instead only 1758 drop the record and look at subsequent records (if any are present) in 1759 the same datagram. Found by jeannotlapin. #345 1760 1761= mbed TLS 2.2.0 released 2015-11-04 1762 1763Security 1764 * Fix potential double free if mbedtls_ssl_conf_psk() is called more than 1765 once and some allocation fails. Cannot be forced remotely. Found by Guido 1766 Vranken, Intelworks. 1767 * Fix potential heap corruption on Windows when 1768 mbedtls_x509_crt_parse_path() is passed a path longer than 2GB. Cannot be 1769 triggered remotely. Found by Guido Vranken, Intelworks. 1770 * Fix potential buffer overflow in some asn1_write_xxx() functions. 1771 Cannot be triggered remotely unless you create X.509 certificates based 1772 on untrusted input or write keys of untrusted origin. Found by Guido 1773 Vranken, Intelworks. 1774 * The X509 max_pathlen constraint was not enforced on intermediate 1775 certificates. Found by Nicholas Wilson, fix and tests provided by 1776 Janos Follath. #280 and #319 1777 1778Features 1779 * Experimental support for EC J-PAKE as defined in Thread 1.0.0. 1780 Disabled by default as the specification might still change. 1781 * Added a key extraction callback to accees the master secret and key 1782 block. (Potential uses include EAP-TLS and Thread.) 1783 1784Bugfix 1785 * Self-signed certificates were not excluded from pathlen counting, 1786 resulting in some valid X.509 being incorrectly rejected. Found and fix 1787 provided by Janos Follath. #319 1788 * Fix build error with configurations where ECDHE-PSK is the only key 1789 exchange. Found and fix provided by Chris Hammond. #270 1790 * Fix build error with configurations where RSA, RSA-PSK, ECDH-RSA or 1791 ECHD-ECDSA if the only key exchange. Multiple reports. #310 1792 * Fixed a bug causing some handshakes to fail due to some non-fatal alerts 1793 not being properly ignored. Found by mancha and Kasom Koht-arsa, #308 1794 * mbedtls_x509_crt_verify(_with_profile)() now also checks the key type and 1795 size/curve against the profile. Before that, there was no way to set a 1796 minimum key size for end-entity certificates with RSA keys. Found by 1797 Matthew Page of Scannex Electronics Ltd. 1798 * Fix failures in MPI on Sparc(64) due to use of bad assembly code. 1799 Found by Kurt Danielson. #292 1800 * Fix typo in name of the extKeyUsage OID. Found by inestlerode, #314 1801 * Fix bug in ASN.1 encoding of booleans that caused generated CA 1802 certificates to be rejected by some applications, including OS X 1803 Keychain. Found and fixed by Jonathan Leroy, Inikup. 1804 1805Changes 1806 * Improved performance of mbedtls_ecp_muladd() when one of the scalars is 1 1807 or -1. 1808 1809= mbed TLS 2.1.2 released 2015-10-06 1810 1811Security 1812 * Added fix for CVE-2015-5291 to prevent heap corruption due to buffer 1813 overflow of the hostname or session ticket. Found by Guido Vranken, 1814 Intelworks. 1815 * Fix potential double-free if mbedtls_ssl_set_hs_psk() is called more than 1816 once in the same handhake and mbedtls_ssl_conf_psk() was used. 1817 Found and patch provided by Guido Vranken, Intelworks. Cannot be forced 1818 remotely. 1819 * Fix stack buffer overflow in pkcs12 decryption (used by 1820 mbedtls_pk_parse_key(file)() when the password is > 129 bytes. 1821 Found by Guido Vranken, Intelworks. Not triggerable remotely. 1822 * Fix potential buffer overflow in mbedtls_mpi_read_string(). 1823 Found by Guido Vranken, Intelworks. Not exploitable remotely in the context 1824 of TLS, but might be in other uses. On 32 bit machines, requires reading a 1825 string of close to or larger than 1GB to exploit; on 64 bit machines, would 1826 require reading a string of close to or larger than 2^62 bytes. 1827 * Fix potential random memory allocation in mbedtls_pem_read_buffer() 1828 on crafted PEM input data. Found and fix provided by Guido Vranken, 1829 Intelworks. Not triggerable remotely in TLS. Triggerable remotely if you 1830 accept PEM data from an untrusted source. 1831 * Fix possible heap buffer overflow in base64_encoded() when the input 1832 buffer is 512MB or larger on 32-bit platforms. Found by Guido Vranken, 1833 Intelworks. Not trigerrable remotely in TLS. 1834 * Fix potential double-free if mbedtls_conf_psk() is called repeatedly on 1835 the same mbedtls_ssl_config object and memory allocation fails. Found by 1836 Guido Vranken, Intelworks. Cannot be forced remotely. 1837 * Fix potential heap buffer overflow in servers that perform client 1838 authentication against a crafted CA cert. Cannot be triggered remotely 1839 unless you allow third parties to pick trust CAs for client auth. 1840 Found by Guido Vranken, Intelworks. 1841 1842Bugfix 1843 * Fix compile error in net.c with musl libc. Found and patch provided by 1844 zhasha (#278). 1845 * Fix macroization of 'inline' keyword when building as C++. (#279) 1846 1847Changes 1848 * Added checking of hostname length in mbedtls_ssl_set_hostname() to ensure 1849 domain names are compliant with RFC 1035. 1850 * Fixed paths for check_config.h in example config files. (Found by bachp) 1851 (#291) 1852 1853= mbed TLS 2.1.1 released 2015-09-17 1854 1855Security 1856 * Add countermeasure against Lenstra's RSA-CRT attack for PKCS#1 v1.5 1857 signatures. (Found by Florian Weimer, Red Hat.) 1858 https://securityblog.redhat.com/2015/09/02/factoring-rsa-keys-with-tls-perfect-forward-secrecy/ 1859 * Fix possible client-side NULL pointer dereference (read) when the client 1860 tries to continue the handshake after it failed (a misuse of the API). 1861 (Found and patch provided by Fabian Foerg, Gotham Digital Science using 1862 afl-fuzz.) 1863 1864Bugfix 1865 * Fix warning when using a 64bit platform. (found by embedthis) (#275) 1866 * Fix off-by-one error in parsing Supported Point Format extension that 1867 caused some handshakes to fail. 1868 1869Changes 1870 * Made X509 profile pointer const in mbedtls_ssl_conf_cert_profile() to allow 1871 use of mbedtls_x509_crt_profile_next. (found by NWilson) 1872 * When a client initiates a reconnect from the same port as a live 1873 connection, if cookie verification is available 1874 (MBEDTLS_SSL_DTLS_HELLO_VERIFY defined in config.h, and usable cookie 1875 callbacks set with mbedtls_ssl_conf_dtls_cookies()), this will be 1876 detected and mbedtls_ssl_read() will return 1877 MBEDTLS_ERR_SSL_CLIENT_RECONNECT - it is then possible to start a new 1878 handshake with the same context. (See RFC 6347 section 4.2.8.) 1879 1880= mbed TLS 2.1.0 released 2015-09-04 1881 1882Features 1883 * Added support for yotta as a build system. 1884 * Primary open source license changed to Apache 2.0 license. 1885 1886Bugfix 1887 * Fix segfault in the benchmark program when benchmarking DHM. 1888 * Fix build error with CMake and pre-4.5 versions of GCC (found by Hugo 1889 Leisink). 1890 * Fix bug when parsing a ServerHello without extensions (found by David 1891 Sears). 1892 * Fix bug in CMake lists that caused libmbedcrypto.a not to be installed 1893 (found by Benoit Lecocq). 1894 * Fix bug in Makefile that caused libmbedcrypto and libmbedx509 not to be 1895 installed (found by Rawi666). 1896 * Fix compile error with armcc 5 with --gnu option. 1897 * Fix bug in Makefile that caused programs not to be installed correctly 1898 (found by robotanarchy) (#232). 1899 * Fix bug in Makefile that prevented from installing without building the 1900 tests (found by robotanarchy) (#232). 1901 * Fix missing -static-libgcc when building shared libraries for Windows 1902 with make. 1903 * Fix link error when building shared libraries for Windows with make. 1904 * Fix error when loading libmbedtls.so. 1905 * Fix bug in mbedtls_ssl_conf_default() that caused the default preset to 1906 be always used (found by dcb314) (#235) 1907 * Fix bug in mbedtls_rsa_public() and mbedtls_rsa_private() that could 1908 result trying to unlock an unlocked mutex on invalid input (found by 1909 Fredrik Axelsson) (#257) 1910 * Fix -Wshadow warnings (found by hnrkp) (#240) 1911 * Fix memory corruption on client with overlong PSK identity, around 1912 SSL_MAX_CONTENT_LEN or higher - not triggerrable remotely (found by 1913 Aleksandrs Saveljevs) (#238) 1914 * Fix unused function warning when using MBEDTLS_MDx_ALT or 1915 MBEDTLS_SHAxxx_ALT (found by Henrik) (#239) 1916 * Fix memory corruption in pkey programs (found by yankuncheng) (#210) 1917 1918Changes 1919 * The PEM parser now accepts a trailing space at end of lines (#226). 1920 * It is now possible to #include a user-provided configuration file at the 1921 end of the default config.h by defining MBEDTLS_USER_CONFIG_FILE on the 1922 compiler's command line. 1923 * When verifying a certificate chain, if an intermediate certificate is 1924 trusted, no later cert is checked. (suggested by hannes-landeholm) 1925 (#220). 1926 * Prepend a "thread identifier" to debug messages (issue pointed out by 1927 Hugo Leisink) (#210). 1928 * Add mbedtls_ssl_get_max_frag_len() to query the current maximum fragment 1929 length. 1930 1931= mbed TLS 2.0.0 released 2015-07-13 1932 1933Features 1934 * Support for DTLS 1.0 and 1.2 (RFC 6347). 1935 * Ability to override core functions from MDx, SHAx, AES and DES modules 1936 with custom implementation (eg hardware accelerated), complementing the 1937 ability to override the whole module. 1938 * New server-side implementation of session tickets that rotate keys to 1939 preserve forward secrecy, and allows sharing across multiple contexts. 1940 * Added a concept of X.509 cerificate verification profile that controls 1941 which algorithms and key sizes (curves for ECDSA) are acceptable. 1942 * Expanded configurability of security parameters in the SSL module with 1943 mbedtls_ssl_conf_dhm_min_bitlen() and mbedtls_ssl_conf_sig_hashes(). 1944 * Introduced a concept of presets for SSL security-relevant configuration 1945 parameters. 1946 1947API Changes 1948 * The library has been split into libmbedcrypto, libmbedx509, libmbedtls. 1949 You now need to link to all of them if you use TLS for example. 1950 * All public identifiers moved to the mbedtls_* or MBEDTLS_* namespace. 1951 Some names have been further changed to make them more consistent. 1952 Migration helpers scripts/rename.pl and include/mbedtls/compat-1.3.h are 1953 provided. Full list of renamings in scripts/data_files/rename-1.3-2.0.txt 1954 * Renamings of fields inside structures, not covered by the previous list: 1955 mbedtls_cipher_info_t.key_length -> key_bitlen 1956 mbedtls_cipher_context_t.key_length -> key_bitlen 1957 mbedtls_ecp_curve_info.size -> bit_size 1958 * Headers are now found in the 'mbedtls' directory (previously 'polarssl'). 1959 * The following _init() functions that could return errors have 1960 been split into an _init() that returns void and another function that 1961 should generally be the first function called on this context after init: 1962 mbedtls_ssl_init() -> mbedtls_ssl_setup() 1963 mbedtls_ccm_init() -> mbedtls_ccm_setkey() 1964 mbedtls_gcm_init() -> mbedtls_gcm_setkey() 1965 mbedtls_hmac_drbg_init() -> mbedtls_hmac_drbg_seed(_buf)() 1966 mbedtls_ctr_drbg_init() -> mbedtls_ctr_drbg_seed() 1967 Note that for mbedtls_ssl_setup(), you need to be done setting up the 1968 ssl_config structure before calling it. 1969 * Most ssl_set_xxx() functions (all except ssl_set_bio(), ssl_set_hostname(), 1970 ssl_set_session() and ssl_set_client_transport_id(), plus 1971 ssl_legacy_renegotiation()) have been renamed to mbedtls_ssl_conf_xxx() 1972 (see rename.pl and compat-1.3.h above) and their first argument's type 1973 changed from ssl_context to ssl_config. 1974 * ssl_set_bio() changed signature (contexts merged, order switched, one 1975 additional callback for read-with-timeout). 1976 * The following functions have been introduced and must be used in callback 1977 implementations (SNI, PSK) instead of their *conf counterparts: 1978 mbedtls_ssl_set_hs_own_cert() 1979 mbedtls_ssl_set_hs_ca_chain() 1980 mbedtls_ssl_set_hs_psk() 1981 * mbedtls_ssl_conf_ca_chain() lost its last argument (peer_cn), now set 1982 using mbedtls_ssl_set_hostname(). 1983 * mbedtls_ssl_conf_session_cache() changed prototype (only one context 1984 pointer, parameters reordered). 1985 * On server, mbedtls_ssl_conf_session_tickets_cb() must now be used in 1986 place of mbedtls_ssl_conf_session_tickets() to enable session tickets. 1987 * The SSL debug callback gained two new arguments (file name, line number). 1988 * Debug modes were removed. 1989 * mbedtls_ssl_conf_truncated_hmac() now returns void. 1990 * mbedtls_memory_buffer_alloc_init() now returns void. 1991 * X.509 verification flags are now an uint32_t. Affect the signature of: 1992 mbedtls_ssl_get_verify_result() 1993 mbedtls_x509_ctr_verify_info() 1994 mbedtls_x509_crt_verify() (flags, f_vrfy -> needs to be updated) 1995 mbedtls_ssl_conf_verify() (f_vrfy -> needs to be updated) 1996 * The following functions changed prototype to avoid an in-out length 1997 parameter: 1998 mbedtls_base64_encode() 1999 mbedtls_base64_decode() 2000 mbedtls_mpi_write_string() 2001 mbedtls_dhm_calc_secret() 2002 * In the NET module, all "int" and "int *" arguments for file descriptors 2003 changed type to "mbedtls_net_context *". 2004 * net_accept() gained new arguments for the size of the client_ip buffer. 2005 * In the threading layer, mbedtls_mutex_init() and mbedtls_mutex_free() now 2006 return void. 2007 * ecdsa_write_signature() gained an additional md_alg argument and 2008 ecdsa_write_signature_det() was deprecated. 2009 * pk_sign() no longer accepts md_alg == POLARSSL_MD_NONE with ECDSA. 2010 * Last argument of x509_crt_check_key_usage() and 2011 mbedtls_x509write_crt_set_key_usage() changed from int to unsigned. 2012 * test_ca_list (from certs.h) is renamed to test_cas_pem and is only 2013 available if POLARSSL_PEM_PARSE_C is defined (it never worked without). 2014 * Test certificates in certs.c are no longer guaranteed to be nul-terminated 2015 strings; use the new *_len variables instead of strlen(). 2016 * Functions mbedtls_x509_xxx_parse(), mbedtls_pk_parse_key(), 2017 mbedtls_pk_parse_public_key() and mbedtls_dhm_parse_dhm() now expect the 2018 length parameter to include the terminating null byte for PEM input. 2019 * Signature of mpi_mul_mpi() changed to make the last argument unsigned 2020 * calloc() is now used instead of malloc() everywhere. API of platform 2021 layer and the memory_buffer_alloc module changed accordingly. 2022 (Thanks to Mansour Moufid for helping with the replacement.) 2023 * Change SSL_DISABLE_RENEGOTIATION config.h flag to SSL_RENEGOTIATION 2024 (support for renegotiation now needs explicit enabling in config.h). 2025 * Split MBEDTLS_HAVE_TIME into MBEDTLS_HAVE_TIME and MBEDTLS_HAVE_TIME_DATE 2026 in config.h 2027 * net_connect() and net_bind() have a new 'proto' argument to choose 2028 between TCP and UDP, using the macros NET_PROTO_TCP or NET_PROTO_UDP. 2029 Their 'port' argument type is changed to a string. 2030 * Some constness fixes 2031 2032Removals 2033 * Removed mbedtls_ecp_group_read_string(). Only named groups are supported. 2034 * Removed mbedtls_ecp_sub() and mbedtls_ecp_add(), use 2035 mbedtls_ecp_muladd(). 2036 * Removed individual mdX_hmac, shaX_hmac, mdX_file and shaX_file functions 2037 (use generic functions from md.h) 2038 * Removed mbedtls_timing_msleep(). Use mbedtls_net_usleep() or a custom 2039 waiting function. 2040 * Removed test DHM parameters from the test certs module. 2041 * Removed the PBKDF2 module (use PKCS5). 2042 * Removed POLARSSL_ERROR_STRERROR_BC (use mbedtls_strerror()). 2043 * Removed compat-1.2.h (helper for migrating from 1.2 to 1.3). 2044 * Removed openssl.h (very partial OpenSSL compatibility layer). 2045 * Configuration options POLARSSL_HAVE_LONGLONG was removed (now always on). 2046 * Configuration options POLARSSL_HAVE_INT8 and POLARSSL_HAVE_INT16 have 2047 been removed (compiler is required to support 32-bit operations). 2048 * Configuration option POLARSSL_HAVE_IPV6 was removed (always enabled). 2049 * Removed test program o_p_test, the script compat.sh does more. 2050 * Removed test program ssl_test, superseded by ssl-opt.sh. 2051 * Removed helper script active-config.pl 2052 2053New deprecations 2054 * md_init_ctx() is deprecated in favour of md_setup(), that adds a third 2055 argument (allowing memory savings if HMAC is not used) 2056 2057Semi-API changes (technically public, morally private) 2058 * Renamed a few headers to include _internal in the name. Those headers are 2059 not supposed to be included by users. 2060 * Changed md_info_t into an opaque structure (use md_get_xxx() accessors). 2061 * Changed pk_info_t into an opaque structure. 2062 * Changed cipher_base_t into an opaque structure. 2063 * Removed sig_oid2 and rename sig_oid1 to sig_oid in x509_crt and x509_crl. 2064 * x509_crt.key_usage changed from unsigned char to unsigned int. 2065 * Removed r and s from ecdsa_context 2066 * Removed mode from des_context and des3_context 2067 2068Default behavior changes 2069 * The default minimum TLS version is now TLS 1.0. 2070 * RC4 is now blacklisted by default in the SSL/TLS layer, and excluded from the 2071 default ciphersuite list returned by ssl_list_ciphersuites() 2072 * Support for receiving SSLv2 ClientHello is now disabled by default at 2073 compile time. 2074 * The default authmode for SSL/TLS clients is now REQUIRED. 2075 * Support for RSA_ALT contexts in the PK layer is now optional. Since is is 2076 enabled in the default configuration, this is only noticeable if using a 2077 custom config.h 2078 * Default DHM parameters server-side upgraded from 1024 to 2048 bits. 2079 * A minimum RSA key size of 2048 bits is now enforced during ceritificate 2080 chain verification. 2081 * Negotiation of truncated HMAC is now disabled by default on server too. 2082 * The following functions are now case-sensitive: 2083 mbedtls_cipher_info_from_string() 2084 mbedtls_ecp_curve_info_from_name() 2085 mbedtls_md_info_from_string() 2086 mbedtls_ssl_ciphersuite_from_string() 2087 mbedtls_version_check_feature() 2088 2089Requirement changes 2090 * The minimum MSVC version required is now 2010 (better C99 support). 2091 * The NET layer now unconditionnaly relies on getaddrinfo() and select(). 2092 * Compiler is required to support C99 types such as long long and uint32_t. 2093 2094API changes from the 1.4 preview branch 2095 * ssl_set_bio_timeout() was removed, split into mbedtls_ssl_set_bio() with 2096 new prototype, and mbedtls_ssl_set_read_timeout(). 2097 * The following functions now return void: 2098 mbedtls_ssl_conf_transport() 2099 mbedtls_ssl_conf_max_version() 2100 mbedtls_ssl_conf_min_version() 2101 * DTLS no longer hard-depends on TIMING_C, but uses a callback interface 2102 instead, see mbedtls_ssl_set_timer_cb(), with the Timing module providing 2103 an example implementation, see mbedtls_timing_delay_context and 2104 mbedtls_timing_set/get_delay(). 2105 * With UDP sockets, it is no longer necessary to call net_bind() again 2106 after a successful net_accept(). 2107 2108Changes 2109 * mbedtls_ctr_drbg_random() and mbedtls_hmac_drbg_random() are now 2110 thread-safe if MBEDTLS_THREADING_C is enabled. 2111 * Reduced ROM fooprint of SHA-256 and added an option to reduce it even 2112 more (at the expense of performance) MBEDTLS_SHA256_SMALLER. 2113 2114= mbed TLS 1.3 branch 2115 2116Security 2117 * With authmode set to SSL_VERIFY_OPTIONAL, verification of keyUsage and 2118 extendedKeyUsage on the leaf certificate was lost (results not accessible 2119 via ssl_get_verify_results()). 2120 * Add countermeasure against "Lucky 13 strikes back" cache-based attack, 2121 https://dl.acm.org/citation.cfm?id=2714625 2122 2123Features 2124 * Improve ECC performance by using more efficient doubling formulas 2125 (contributed by Peter Dettman). 2126 * Add x509_crt_verify_info() to display certificate verification results. 2127 * Add support for reading DH parameters with privateValueLength included 2128 (contributed by Daniel Kahn Gillmor). 2129 * Add support for bit strings in X.509 names (request by Fredrik Axelsson). 2130 * Add support for id-at-uniqueIdentifier in X.509 names. 2131 * Add support for overriding snprintf() (except on Windows) and exit() in 2132 the platform layer. 2133 * Add an option to use macros instead of function pointers in the platform 2134 layer (helps get rid of unwanted references). 2135 * Improved Makefiles for Windows targets by fixing library targets and making 2136 cross-compilation easier (thanks to Alon Bar-Lev). 2137 * The benchmark program also prints heap usage for public-key primitives 2138 if POLARSSL_MEMORY_BUFFER_ALLOC_C and POLARSSL_MEMORY_DEBUG are defined. 2139 * New script ecc-heap.sh helps measuring the impact of ECC parameters on 2140 speed and RAM (heap only for now) usage. 2141 * New script memory.sh helps measuring the ROM and RAM requirements of two 2142 reduced configurations (PSK-CCM and NSA suite B). 2143 * Add config flag POLARSSL_DEPRECATED_WARNING (off by default) to produce 2144 warnings on use of deprecated functions (with GCC and Clang only). 2145 * Add config flag POLARSSL_DEPRECATED_REMOVED (off by default) to produce 2146 errors on use of deprecated functions. 2147 2148Bugfix 2149 * Fix compile errors with PLATFORM_NO_STD_FUNCTIONS. 2150 * Fix compile error with PLATFORM_EXIT_ALT (thanks to Rafał Przywara). 2151 * Fix bug in entropy.c when THREADING_C is also enabled that caused 2152 entropy_free() to crash (thanks to Rafał Przywara). 2153 * Fix memory leak when gcm_setkey() and ccm_setkey() are used more than 2154 once on the same context. 2155 * Fix bug in ssl_mail_client when password is longer that username (found 2156 by Bruno Pape). 2157 * Fix undefined behaviour (memcmp( NULL, NULL, 0 );) in X.509 modules 2158 (detected by Clang's 3.6 UBSan). 2159 * mpi_size() and mpi_msb() would segfault when called on an mpi that is 2160 initialized but not set (found by pravic). 2161 * Fix detection of support for getrandom() on Linux (reported by syzzer) by 2162 doing it at runtime (using uname) rather that compile time. 2163 * Fix handling of symlinks by "make install" (found by Gaël PORTAY). 2164 * Fix potential NULL pointer dereference (not trigerrable remotely) when 2165 ssl_write() is called before the handshake is finished (introduced in 2166 1.3.10) (first reported by Martin Blumenstingl). 2167 * Fix bug in pk_parse_key() that caused some valid private EC keys to be 2168 rejected. 2169 * Fix bug in Via Padlock support (found by Nikos Mavrogiannopoulos). 2170 * Fix thread safety bug in RSA operations (found by Fredrik Axelsson). 2171 * Fix hardclock() (only used in the benchmarking program) with some 2172 versions of mingw64 (found by kxjhlele). 2173 * Fix warnings from mingw64 in timing.c (found by kxjklele). 2174 * Fix potential unintended sign extension in asn1_get_len() on 64-bit 2175 platforms. 2176 * Fix potential memory leak in ssl_set_psk() (found by Mansour Moufid). 2177 * Fix compile error when POLARSSL_SSL_DISABLE_RENEGOTATION and 2178 POLARSSL_SSL_SSESSION_TICKETS where both enabled in config.h (introduced 2179 in 1.3.10). 2180 * Add missing extern "C" guard in aesni.h (reported by amir zamani). 2181 * Add missing dependency on SHA-256 in some x509 programs (reported by 2182 Gergely Budai). 2183 * Fix bug related to ssl_set_curves(): the client didn't check that the 2184 curve picked by the server was actually allowed. 2185 2186Changes 2187 * Remove bias in mpi_gen_prime (contributed by Pascal Junod). 2188 * Remove potential sources of timing variations (some contributed by Pascal 2189 Junod). 2190 * Options POLARSSL_HAVE_INT8 and POLARSSL_HAVE_INT16 are deprecated. 2191 * Enabling POLARSSL_NET_C without POLARSSL_HAVE_IPV6 is deprecated. 2192 * compat-1.2.h and openssl.h are deprecated. 2193 * Adjusting/overriding CFLAGS and LDFLAGS with the make build system is now 2194 more flexible (warning: OFLAGS is not used any more) (see the README) 2195 (contributed by Alon Bar-Lev). 2196 * ssl_set_own_cert() no longer calls pk_check_pair() since the 2197 performance impact was bad for some users (this was introduced in 1.3.10). 2198 * Move from SHA-1 to SHA-256 in example programs using signatures 2199 (suggested by Thorsten Mühlfelder). 2200 * Remove some unneeded inclusions of header files from the standard library 2201 "minimize" others (eg use stddef.h if only size_t is needed). 2202 * Change #include lines in test files to use double quotes instead of angle 2203 brackets for uniformity with the rest of the code. 2204 * Remove dependency on sscanf() in X.509 parsing modules. 2205 2206= mbed TLS 1.3.10 released 2015-02-09 2207Security 2208 * NULL pointer dereference in the buffer-based allocator when the buffer is 2209 full and polarssl_free() is called (found by Mark Hasemeyer) 2210 (only possible if POLARSSL_MEMORY_BUFFER_ALLOC_C is enabled, which it is 2211 not by default). 2212 * Fix remotely-triggerable uninitialised pointer dereference caused by 2213 crafted X.509 certificate (TLS server is not affected if it doesn't ask for a 2214 client certificate) (found using Codenomicon Defensics). 2215 * Fix remotely-triggerable memory leak caused by crafted X.509 certificates 2216 (TLS server is not affected if it doesn't ask for a client certificate) 2217 (found using Codenomicon Defensics). 2218 * Fix potential stack overflow while parsing crafted X.509 certificates 2219 (TLS server is not affected if it doesn't ask for a client certificate) 2220 (found using Codenomicon Defensics). 2221 * Fix timing difference that could theoretically lead to a 2222 Bleichenbacher-style attack in the RSA and RSA-PSK key exchanges 2223 (reported by Sebastian Schinzel). 2224 2225Features 2226 * Add support for FALLBACK_SCSV (draft-ietf-tls-downgrade-scsv). 2227 * Add support for Extended Master Secret (draft-ietf-tls-session-hash). 2228 * Add support for Encrypt-then-MAC (RFC 7366). 2229 * Add function pk_check_pair() to test if public and private keys match. 2230 * Add x509_crl_parse_der(). 2231 * Add compile-time option POLARSSL_X509_MAX_INTERMEDIATE_CA to limit the 2232 length of an X.509 verification chain. 2233 * Support for renegotiation can now be disabled at compile-time 2234 * Support for 1/n-1 record splitting, a countermeasure against BEAST. 2235 * Certificate selection based on signature hash, preferring SHA-1 over SHA-2 2236 for pre-1.2 clients when multiple certificates are available. 2237 * Add support for getrandom() syscall on recent Linux kernels with Glibc or 2238 a compatible enough libc (eg uClibc). 2239 * Add ssl_set_arc4_support() to make it easier to disable RC4 at runtime 2240 while using the default ciphersuite list. 2241 * Added new error codes and debug messages about selection of 2242 ciphersuite/certificate. 2243 2244Bugfix 2245 * Stack buffer overflow if ctr_drbg_update() is called with too large 2246 add_len (found by Jean-Philippe Aumasson) (not triggerable remotely). 2247 * Possible buffer overflow of length at most POLARSSL_MEMORY_ALIGN_MULTIPLE 2248 if memory_buffer_alloc_init() was called with buf not aligned and len not 2249 a multiple of POLARSSL_MEMORY_ALIGN_MULTIPLE (not triggerable remotely). 2250 * User set CFLAGS were ignored by Cmake with gcc (introduced in 1.3.9, found 2251 by Julian Ospald). 2252 * Fix potential undefined behaviour in Camellia. 2253 * Fix potential failure in ECDSA signatures when POLARSSL_ECP_MAX_BITS is a 2254 multiple of 8 (found by Gergely Budai). 2255 * Fix unchecked return code in x509_crt_parse_path() on Windows (found by 2256 Peter Vaskovic). 2257 * Fix assembly selection for MIPS64 (thanks to James Cowgill). 2258 * ssl_get_verify_result() now works even if the handshake was aborted due 2259 to a failed verification (found by Fredrik Axelsson). 2260 * Skip writing and parsing signature_algorithm extension if none of the 2261 key exchanges enabled needs certificates. This fixes a possible interop 2262 issue with some servers when a zero-length extension was sent. (Reported 2263 by Peter Dettman.) 2264 * On a 0-length input, base64_encode() did not correctly set output length 2265 (found by Hendrik van den Boogaard). 2266 2267Changes 2268 * Use deterministic nonces for AEAD ciphers in TLS by default (possible to 2269 switch back to random with POLARSSL_SSL_AEAD_RANDOM_IV in config.h). 2270 * Blind RSA private operations even when POLARSSL_RSA_NO_CRT is defined. 2271 * ssl_set_own_cert() now returns an error on key-certificate mismatch. 2272 * Forbid repeated extensions in X.509 certificates. 2273 * debug_print_buf() now prints a text view in addition to hexadecimal. 2274 * A specific error is now returned when there are ciphersuites in common 2275 but none of them is usable due to external factors such as no certificate 2276 with a suitable (extended)KeyUsage or curve or no PSK set. 2277 * It is now possible to disable negotiation of truncated HMAC server-side 2278 at runtime with ssl_set_truncated_hmac(). 2279 * Example programs for SSL client and server now disable SSLv3 by default. 2280 * Example programs for SSL client and server now disable RC4 by default. 2281 * Use platform.h in all test suites and programs. 2282 2283= PolarSSL 1.3.9 released 2014-10-20 2284Security 2285 * Lowest common hash was selected from signature_algorithms extension in 2286 TLS 1.2 (found by Darren Bane) (introduced in 1.3.8). 2287 * Remotely-triggerable memory leak when parsing some X.509 certificates 2288 (server is not affected if it doesn't ask for a client certificate) 2289 (found using Codenomicon Defensics). 2290 * Remotely-triggerable memory leak when parsing crafted ClientHello 2291 (not affected if ECC support was compiled out) (found using Codenomicon 2292 Defensics). 2293 2294Bugfix 2295 * Support escaping of commas in x509_string_to_names() 2296 * Fix compile error in ssl_pthread_server (found by Julian Ospald). 2297 * Fix net_accept() regarding non-blocking sockets (found by Luca Pesce). 2298 * Don't print uninitialised buffer in ssl_mail_client (found by Marc Abel). 2299 * Fix warnings from Clang's scan-build (contributed by Alfred Klomp). 2300 * Fix compile error in timing.c when POLARSSL_NET_C and POLARSSL_SELFTEST 2301 are defined but not POLARSSL_HAVE_TIME (found by Stephane Di Vito). 2302 * Remove non-existent file from VS projects (found by Peter Vaskovic). 2303 * ssl_read() could return non-application data records on server while 2304 renegotation was pending, and on client when a HelloRequest was received. 2305 * Server-initiated renegotiation would fail with non-blocking I/O if the 2306 write callback returned WANT_WRITE when requesting renegotiation. 2307 * ssl_close_notify() could send more than one message in some circumstances 2308 with non-blocking I/O. 2309 * Fix compiler warnings on iOS (found by Sander Niemeijer). 2310 * x509_crt_parse() did not increase total_failed on PEM error 2311 * Fix compile error with armcc in mpi_is_prime() 2312 * Fix potential bad read in parsing ServerHello (found by Adrien 2313 Vialletelle). 2314 2315Changes 2316 * Ciphersuites using SHA-256 or SHA-384 now require TLS 1.x (there is no 2317 standard defining how to use SHA-2 with SSL 3.0). 2318 * Ciphersuites using RSA-PSK key exchange new require TLS 1.x (the spec is 2319 ambiguous on how to encode some packets with SSL 3.0). 2320 * Made buffer size in pk_write_(pub)key_pem() more dynamic, eg smaller if 2321 RSA is disabled, larger if POLARSSL_MPI_MAX_SIZE is larger. 2322 * ssl_read() now returns POLARSSL_ERR_NET_WANT_READ rather than 2323 POLARSSL_ERR_SSL_UNEXPECTED_MESSAGE on harmless alerts. 2324 * POLARSSL_MPI_MAX_SIZE now defaults to 1024 in order to allow 8192 bits 2325 RSA keys. 2326 * Accept spaces at end of line or end of buffer in base64_decode(). 2327 * X.509 certificates with more than one AttributeTypeAndValue per 2328 RelativeDistinguishedName are not accepted any more. 2329 2330= PolarSSL 1.3.8 released 2014-07-11 2331Security 2332 * Fix length checking for AEAD ciphersuites (found by Codenomicon). 2333 It was possible to crash the server (and client) using crafted messages 2334 when a GCM suite was chosen. 2335 2336Features 2337 * Add CCM module and cipher mode to Cipher Layer 2338 * Support for CCM and CCM_8 ciphersuites 2339 * Support for parsing and verifying RSASSA-PSS signatures in the X.509 2340 modules (certificates, CRLs and CSRs). 2341 * Blowfish in the cipher layer now supports variable length keys. 2342 * Add example config.h for PSK with CCM, optimized for low RAM usage. 2343 * Optimize for RAM usage in example config.h for NSA Suite B profile. 2344 * Add POLARSSL_REMOVE_ARC4_CIPHERSUITES to allow removing RC4 ciphersuites 2345 from the default list (inactive by default). 2346 * Add server-side enforcement of sent renegotiation requests 2347 (ssl_set_renegotiation_enforced()) 2348 * Add SSL_CIPHERSUITES config.h flag to allow specifying a list of 2349 ciphersuites to use and save some memory if the list is small. 2350 2351Changes 2352 * Add LINK_WITH_PTHREAD option in CMake for explicit linking that is 2353 required on some platforms (e.g. OpenBSD) 2354 * Migrate zeroizing of data to polarssl_zeroize() instead of memset() 2355 against unwanted compiler optimizations 2356 * md_list() now returns hashes strongest first 2357 * Selection of hash for signing ServerKeyExchange in TLS 1.2 now picks 2358 strongest offered by client. 2359 * All public contexts have _init() and _free() functions now for simpler 2360 usage pattern 2361 2362Bugfix 2363 * Fix in debug_print_msg() 2364 * Enforce alignment in the buffer allocator even if buffer is not aligned 2365 * Remove less-than-zero checks on unsigned numbers 2366 * Stricter check on SSL ClientHello internal sizes compared to actual packet 2367 size (found by TrustInSoft) 2368 * Fix WSAStartup() return value check (found by Peter Vaskovic) 2369 * Other minor issues (found by Peter Vaskovic) 2370 * Fix symlink command for cross compiling with CMake (found by Andre 2371 Heinecke) 2372 * Fix DER output of gen_key app (found by Gergely Budai) 2373 * Very small records were incorrectly rejected when truncated HMAC was in 2374 use with some ciphersuites and versions (RC4 in all versions, CBC with 2375 versions < TLS 1.1). 2376 * Very large records using more than 224 bytes of padding were incorrectly 2377 rejected with CBC-based ciphersuites and TLS >= 1.1 2378 * Very large records using less padding could cause a buffer overread of up 2379 to 32 bytes with CBC-based ciphersuites and TLS >= 1.1 2380 * Restore ability to use a v1 cert as a CA if trusted locally. (This had 2381 been removed in 1.3.6.) 2382 * Restore ability to locally trust a self-signed cert that is not a proper 2383 CA for use as an end entity certificate. (This had been removed in 2384 1.3.6.) 2385 * Fix preprocessor checks for bn_mul PPC asm (found by Barry K. Nathan). 2386 * Use \n\t rather than semicolons for bn_mul asm, since some assemblers 2387 interpret semicolons as comment delimiters (found by Barry K. Nathan). 2388 * Fix off-by-one error in parsing Supported Point Format extension that 2389 caused some handshakes to fail. 2390 * Fix possible miscomputation of the premaster secret with DHE-PSK key 2391 exchange that caused some handshakes to fail with other implementations. 2392 (Failure rate <= 1/255 with common DHM moduli.) 2393 * Disable broken Sparc64 bn_mul assembly (found by Florian Obser). 2394 * Fix base64_decode() to return and check length correctly (in case of 2395 tight buffers) 2396 * Fix mpi_write_string() to write "00" as hex output for empty MPI (found 2397 by Hui Dong) 2398 2399= PolarSSL 1.3.7 released on 2014-05-02 2400Features 2401 * debug_set_log_mode() added to determine raw or full logging 2402 * debug_set_threshold() added to ignore messages over threshold level 2403 * version_check_feature() added to check for compile-time options at 2404 run-time 2405 2406Changes 2407 * POLARSSL_CONFIG_OPTIONS has been removed. All values are individually 2408 checked and filled in the relevant module headers 2409 * Debug module only outputs full lines instead of parts 2410 * Better support for the different Attribute Types from IETF PKIX (RFC 5280) 2411 * AES-NI now compiles with "old" assemblers too 2412 * Ciphersuites based on RC4 now have the lowest priority by default 2413 2414Bugfix 2415 * Only iterate over actual certificates in ssl_write_certificate_request() 2416 (found by Matthew Page) 2417 * Typos in platform.c and pkcs11.c (found by Daniel Phillips and Steffan 2418 Karger) 2419 * cert_write app should use subject of issuer certificate as issuer of cert 2420 * Fix false reject in padding check in ssl_decrypt_buf() for CBC 2421 ciphersuites, for full SSL frames of data. 2422 * Improve interoperability by not writing extension length in ClientHello / 2423 ServerHello when no extensions are present (found by Matthew Page) 2424 * rsa_check_pubkey() now allows an E up to N 2425 * On OpenBSD, use arc4random_buf() instead of rand() to prevent warnings 2426 * mpi_fill_random() was creating numbers larger than requested on 2427 big-endian platform when size was not an integer number of limbs 2428 * Fix dependencies issues in X.509 test suite. 2429 * Some parts of ssl_tls.c were compiled even when the module was disabled. 2430 * Fix detection of DragonflyBSD in net.c (found by Markus Pfeiffer) 2431 * Fix detection of Clang on some Apple platforms with CMake 2432 (found by Barry K. Nathan) 2433 2434= PolarSSL 1.3.6 released on 2014-04-11 2435 2436Features 2437 * Support for the ALPN SSL extension 2438 * Add option 'use_dev_random' to gen_key application 2439 * Enable verification of the keyUsage extension for CA and leaf 2440 certificates (POLARSSL_X509_CHECK_KEY_USAGE) 2441 * Enable verification of the extendedKeyUsage extension 2442 (POLARSSL_X509_CHECK_EXTENDED_KEY_USAGE) 2443 2444Changes 2445 * x509_crt_info() now prints information about parsed extensions as well 2446 * pk_verify() now returns a specific error code when the signature is valid 2447 but shorter than the supplied length. 2448 * Use UTC time to check certificate validity. 2449 * Reject certificates with times not in UTC, per RFC 5280. 2450 2451Security 2452 * Avoid potential timing leak in ecdsa_sign() by blinding modular division. 2453 (Found by Watson Ladd.) 2454 * The notAfter date of some certificates was no longer checked since 1.3.5. 2455 This affects certificates in the user-supplied chain except the top 2456 certificate. If the user-supplied chain contains only one certificates, 2457 it is not affected (ie, its notAfter date is properly checked). 2458 * Prevent potential NULL pointer dereference in ssl_read_record() (found by 2459 TrustInSoft) 2460 2461Bugfix 2462 * The length of various ClientKeyExchange messages was not properly checked. 2463 * Some example server programs were not sending the close_notify alert. 2464 * Potential memory leak in mpi_exp_mod() when error occurs during 2465 calculation of RR. 2466 * Fixed malloc/free default #define in platform.c (found by Gergely Budai). 2467 * Fixed type which made POLARSSL_ENTROPY_FORCE_SHA256 uneffective (found by 2468 Gergely Budai). 2469 * Fix #include path in ecdsa.h which wasn't accepted by some compilers. 2470 (found by Gergely Budai) 2471 * Fix compile errors when POLARSSL_ERROR_STRERROR_BC is undefined (found by 2472 Shuo Chen). 2473 * oid_get_numeric_string() used to truncate the output without returning an 2474 error if the output buffer was just 1 byte too small. 2475 * dhm_parse_dhm() (hence dhm_parse_dhmfile()) did not set dhm->len. 2476 * Calling pk_debug() on an RSA-alt key would segfault. 2477 * pk_get_size() and pk_get_len() were off by a factor 8 for RSA-alt keys. 2478 * Potential buffer overwrite in pem_write_buffer() because of low length 2479 indication (found by Thijs Alkemade) 2480 * EC curves constants, which should be only in ROM since 1.3.3, were also 2481 stored in RAM due to missing 'const's (found by Gergely Budai). 2482 2483= PolarSSL 1.3.5 released on 2014-03-26 2484Features 2485 * HMAC-DRBG as a separate module 2486 * Option to set the Curve preference order (disabled by default) 2487 * Single Platform compatilibity layer (for memory / printf / fprintf) 2488 * Ability to provide alternate timing implementation 2489 * Ability to force the entropy module to use SHA-256 as its basis 2490 (POLARSSL_ENTROPY_FORCE_SHA256) 2491 * Testing script ssl-opt.sh added for testing 'live' ssl option 2492 interoperability against OpenSSL and PolarSSL 2493 * Support for reading EC keys that use SpecifiedECDomain in some cases. 2494 * Entropy module now supports seed writing and reading 2495 2496Changes 2497 * Deprecated the Memory layer 2498 * entropy_add_source(), entropy_update_manual() and entropy_gather() 2499 now thread-safe if POLARSSL_THREADING_C defined 2500 * Improvements to the CMake build system, contributed by Julian Ospald. 2501 * Work around a bug of the version of Clang shipped by Apple with Mavericks 2502 that prevented bignum.c from compiling. (Reported by Rafael Baptista.) 2503 * Revamped the compat.sh interoperatibility script to include support for 2504 testing against GnuTLS 2505 * Deprecated ssl_set_own_cert_rsa() and ssl_set_own_cert_rsa_alt() 2506 * Improvements to tests/Makefile, contributed by Oden Eriksson. 2507 2508Security 2509 * Forbid change of server certificate during renegotiation to prevent 2510 "triple handshake" attack when authentication mode is 'optional' (the 2511 attack was already impossible when authentication is required). 2512 * Check notBefore timestamp of certificates and CRLs from the future. 2513 * Forbid sequence number wrapping 2514 * Fixed possible buffer overflow with overlong PSK 2515 * Possible remotely-triggered out-of-bounds memory access fixed (found by 2516 TrustInSoft) 2517 2518Bugfix 2519 * ecp_gen_keypair() does more tries to prevent failure because of 2520 statistics 2521 * Fixed bug in RSA PKCS#1 v1.5 "reversed" operations 2522 * Fixed testing with out-of-source builds using cmake 2523 * Fixed version-major intolerance in server 2524 * Fixed CMake symlinking on out-of-source builds 2525 * Fixed dependency issues in test suite 2526 * Programs rsa_sign_pss and rsa_verify_pss were not using PSS since 1.3.0 2527 * Bignum's MIPS-32 assembly was used on MIPS-64, causing chaos. (Found by 2528 Alex Wilson.) 2529 * ssl_cache was creating entries when max_entries=0 if TIMING_C was enabled. 2530 * m_sleep() was sleeping twice too long on most Unix platforms. 2531 * Fixed bug with session tickets and non-blocking I/O in the unlikely case 2532 send() would return an EAGAIN error when sending the ticket. 2533 * ssl_cache was leaking memory when reusing a timed out entry containing a 2534 client certificate. 2535 * ssl_srv was leaking memory when client presented a timed out ticket 2536 containing a client certificate 2537 * ssl_init() was leaving a dirty pointer in ssl_context if malloc of 2538 out_ctr failed 2539 * ssl_handshake_init() was leaving dirty pointers in subcontexts if malloc 2540 of one of them failed 2541 * Fix typo in rsa_copy() that impacted PKCS#1 v2 contexts 2542 * x509_get_current_time() uses localtime_r() to prevent thread issues 2543 2544= PolarSSL 1.3.4 released on 2014-01-27 2545Features 2546 * Support for the Koblitz curves: secp192k1, secp224k1, secp256k1 2547 * Support for RIPEMD-160 2548 * Support for AES CFB8 mode 2549 * Support for deterministic ECDSA (RFC 6979) 2550 2551Bugfix 2552 * Potential memory leak in bignum_selftest() 2553 * Replaced expired test certificate 2554 * ssl_mail_client now terminates lines with CRLF, instead of LF 2555 * net module handles timeouts on blocking sockets better (found by Tilman 2556 Sauerbeck) 2557 * Assembly format fixes in bn_mul.h 2558 2559Security 2560 * Missing MPI_CHK calls added around unguarded mpi calls (found by 2561 TrustInSoft) 2562 2563= PolarSSL 1.3.3 released on 2013-12-31 2564Features 2565 * EC key generation support in gen_key app 2566 * Support for adhering to client ciphersuite order preference 2567 (POLARSSL_SSL_SRV_RESPECT_CLIENT_PREFERENCE) 2568 * Support for Curve25519 2569 * Support for ECDH-RSA and ECDH-ECDSA key exchanges and ciphersuites 2570 * Support for IPv6 in the NET module 2571 * AES-NI support for AES, AES-GCM and AES key scheduling 2572 * SSL Pthread-based server example added (ssl_pthread_server) 2573 2574Changes 2575 * gen_prime() speedup 2576 * Speedup of ECP multiplication operation 2577 * Relaxed some SHA2 ciphersuite's version requirements 2578 * Dropped use of readdir_r() instead of readdir() with threading support 2579 * More constant-time checks in the RSA module 2580 * Split off curves from ecp.c into ecp_curves.c 2581 * Curves are now stored fully in ROM 2582 * Memory usage optimizations in ECP module 2583 * Removed POLARSSL_THREADING_DUMMY 2584 2585Bugfix 2586 * Fixed bug in mpi_set_bit() on platforms where t_uint is wider than int 2587 * Fixed X.509 hostname comparison (with non-regular characters) 2588 * SSL now gracefully handles missing RNG 2589 * Missing defines / cases for RSA_PSK key exchange 2590 * crypt_and_hash app checks MAC before final decryption 2591 * Potential memory leak in ssl_ticket_keys_init() 2592 * Memory leak in benchmark application 2593 * Fixed x509_crt_parse_path() bug on Windows platforms 2594 * Added missing MPI_CHK() around some statements in mpi_div_mpi() (found by 2595 TrustInSoft) 2596 * Fixed potential overflow in certificate size verification in 2597 ssl_write_certificate() (found by TrustInSoft) 2598 2599Security 2600 * Possible remotely-triggered out-of-bounds memory access fixed (found by 2601 TrustInSoft) 2602 2603= PolarSSL 1.3.2 released on 2013-11-04 2604Features 2605 * PK tests added to test framework 2606 * Added optional optimization for NIST MODP curves (POLARSSL_ECP_NIST_OPTIM) 2607 * Support for Camellia-GCM mode and ciphersuites 2608 2609Changes 2610 * Padding checks in cipher layer are now constant-time 2611 * Value comparisons in SSL layer are now constant-time 2612 * Support for serialNumber, postalAddress and postalCode in X509 names 2613 * SSL Renegotiation was refactored 2614 2615Bugfix 2616 * More stringent checks in cipher layer 2617 * Server does not send out extensions not advertised by client 2618 * Prevent possible alignment warnings on casting from char * to 'aligned *' 2619 * Misc fixes and additions to dependency checks 2620 * Const correctness 2621 * cert_write with selfsign should use issuer_name as subject_name 2622 * Fix ECDSA corner case: missing reduction mod N (found by DualTachyon) 2623 * Defines to handle UEFI environment under MSVC 2624 * Server-side initiated renegotiations send HelloRequest 2625 2626= PolarSSL 1.3.1 released on 2013-10-15 2627Features 2628 * Support for Brainpool curves and TLS ciphersuites (RFC 7027) 2629 * Support for ECDHE-PSK key-exchange and ciphersuites 2630 * Support for RSA-PSK key-exchange and ciphersuites 2631 2632Changes 2633 * RSA blinding locks for a smaller amount of time 2634 * TLS compression only allocates working buffer once 2635 * Introduced POLARSSL_HAVE_READDIR_R for systems without it 2636 * config.h is more script-friendly 2637 2638Bugfix 2639 * Missing MSVC defines added 2640 * Compile errors with POLARSSL_RSA_NO_CRT 2641 * Header files with 'polarssl/' 2642 * Const correctness 2643 * Possible naming collision in dhm_context 2644 * Better support for MSVC 2645 * threading_set_alt() name 2646 * Added missing x509write_crt_set_version() 2647 2648= PolarSSL 1.3.0 released on 2013-10-01 2649Features 2650 * Elliptic Curve Cryptography module added 2651 * Elliptic Curve Diffie Hellman module added 2652 * Ephemeral Elliptic Curve Diffie Hellman support for SSL/TLS 2653 (ECDHE-based ciphersuites) 2654 * Ephemeral Elliptic Curve Digital Signature Algorithm support for SSL/TLS 2655 (ECDSA-based ciphersuites) 2656 * Ability to specify allowed ciphersuites based on the protocol version. 2657 * PSK and DHE-PSK based ciphersuites added 2658 * Memory allocation abstraction layer added 2659 * Buffer-based memory allocator added (no malloc() / free() / HEAP usage) 2660 * Threading abstraction layer added (dummy / pthread / alternate) 2661 * Public Key abstraction layer added 2662 * Parsing Elliptic Curve keys 2663 * Parsing Elliptic Curve certificates 2664 * Support for max_fragment_length extension (RFC 6066) 2665 * Support for truncated_hmac extension (RFC 6066) 2666 * Support for zeros-and-length (ANSI X.923) padding, one-and-zeros 2667 (ISO/IEC 7816-4) padding and zero padding in the cipher layer 2668 * Support for session tickets (RFC 5077) 2669 * Certificate Request (CSR) generation with extensions (key_usage, 2670 ns_cert_type) 2671 * X509 Certificate writing with extensions (basic_constraints, 2672 issuer_key_identifier, etc) 2673 * Optional blinding for RSA, DHM and EC 2674 * Support for multiple active certificate / key pairs in SSL servers for 2675 the same host (Not to be confused with SNI!) 2676 2677Changes 2678 * Ability to enable / disable SSL v3 / TLS 1.0 / TLS 1.1 / TLS 1.2 2679 individually 2680 * Introduced separate SSL Ciphersuites module that is based on 2681 Cipher and MD information 2682 * Internals for SSL module adapted to have separate IV pointer that is 2683 dynamically set (Better support for hardware acceleration) 2684 * Moved all OID functionality to a separate module. RSA function 2685 prototypes for the RSA sign and verify functions changed as a result 2686 * Split up the GCM module into a starts/update/finish cycle 2687 * Client and server now filter sent and accepted ciphersuites on minimum 2688 and maximum protocol version 2689 * Ability to disable server_name extension (RFC 6066) 2690 * Renamed error_strerror() to the less conflicting polarssl_strerror() 2691 (Ability to keep old as well with POLARSSL_ERROR_STRERROR_BC) 2692 * SHA2 renamed to SHA256, SHA4 renamed to SHA512 and functions accordingly 2693 * All RSA operations require a random generator for blinding purposes 2694 * X509 core refactored 2695 * x509_crt_verify() now case insensitive for cn (RFC 6125 6.4) 2696 * Also compiles / runs without time-based functions (!POLARSSL_HAVE_TIME) 2697 * Support faulty X509 v1 certificates with extensions 2698 (POLARSSL_X509_ALLOW_EXTENSIONS_NON_V3) 2699 2700Bugfix 2701 * Fixed parse error in ssl_parse_certificate_request() 2702 * zlib compression/decompression skipped on empty blocks 2703 * Support for AIX header locations in net.c module 2704 * Fixed file descriptor leaks 2705 2706Security 2707 * RSA blinding on CRT operations to counter timing attacks 2708 (found by Cyril Arnaud and Pierre-Alain Fouque) 2709 2710 2711= Version 1.2.14 released 2015-05-?? 2712 2713Security 2714 * Fix potential invalid memory read in the server, that allows a client to 2715 crash it remotely (found by Caj Larsson). 2716 * Fix potential invalid memory read in certificate parsing, that allows a 2717 client to crash the server remotely if client authentication is enabled 2718 (found using Codenomicon Defensics). 2719 * Add countermeasure against "Lucky 13 strikes back" cache-based attack, 2720 https://dl.acm.org/citation.cfm?id=2714625 2721 2722Bugfix 2723 * Fix bug in Via Padlock support (found by Nikos Mavrogiannopoulos). 2724 * Fix hardclock() (only used in the benchmarking program) with some 2725 versions of mingw64 (found by kxjhlele). 2726 * Fix warnings from mingw64 in timing.c (found by kxjklele). 2727 * Fix potential unintended sign extension in asn1_get_len() on 64-bit 2728 platforms (found with Coverity Scan). 2729 2730= Version 1.2.13 released 2015-02-16 2731Note: Although PolarSSL has been renamed to mbed TLS, no changes reflecting 2732 this will be made in the 1.2 branch at this point. 2733 2734Security 2735 * Fix remotely-triggerable uninitialised pointer dereference caused by 2736 crafted X.509 certificate (TLS server is not affected if it doesn't ask 2737 for a client certificate) (found using Codenomicon Defensics). 2738 * Fix remotely-triggerable memory leak caused by crafted X.509 certificates 2739 (TLS server is not affected if it doesn't ask for a client certificate) 2740 (found using Codenomicon Defensics). 2741 * Fix potential stack overflow while parsing crafted X.509 certificates 2742 (TLS server is not affected if it doesn't ask for a client certificate) 2743 found using Codenomicon Defensics). 2744 * Fix buffer overread of size 1 when parsing crafted X.509 certificates 2745 (TLS server is not affected if it doesn't ask for a client certificate). 2746 2747Bugfix 2748 * Fix potential undefined behaviour in Camellia. 2749 * Fix memory leaks in PKCS#5 and PKCS#12. 2750 * Stack buffer overflow if ctr_drbg_update() is called with too large 2751 add_len (found by Jean-Philippe Aumasson) (not triggerable remotely). 2752 * Fix bug in MPI/bignum on s390/s390x (reported by Dan Horák) (introduced 2753 in 1.2.12). 2754 * Fix unchecked return code in x509_crt_parse_path() on Windows (found by 2755 Peter Vaskovic). 2756 * Fix assembly selection for MIPS64 (thanks to James Cowgill). 2757 * ssl_get_verify_result() now works even if the handshake was aborted due 2758 to a failed verification (found by Fredrik Axelsson). 2759 * Skip writing and parsing signature_algorithm extension if none of the 2760 key exchanges enabled needs certificates. This fixes a possible interop 2761 issue with some servers when a zero-length extension was sent. (Reported 2762 by Peter Dettman.) 2763 * On a 0-length input, base64_encode() did not correctly set output length 2764 (found by Hendrik van den Boogaard). 2765 2766Changes 2767 * Blind RSA private operations even when POLARSSL_RSA_NO_CRT is defined. 2768 * Forbid repeated extensions in X.509 certificates. 2769 * Add compile-time option POLARSSL_X509_MAX_INTERMEDIATE_CA to limit the 2770 length of an X.509 verification chain (default = 8). 2771= Version 1.2.12 released 2014-10-24 2772 2773Security 2774 * Remotely-triggerable memory leak when parsing some X.509 certificates 2775 (server is not affected if it doesn't ask for a client certificate). 2776 (Found using Codenomicon Defensics.) 2777 2778Bugfix 2779 * Fix potential bad read in parsing ServerHello (found by Adrien 2780 Vialletelle). 2781 * ssl_close_notify() could send more than one message in some circumstances 2782 with non-blocking I/O. 2783 * x509_crt_parse() did not increase total_failed on PEM error 2784 * Fix compiler warnings on iOS (found by Sander Niemeijer). 2785 * Don't print uninitialised buffer in ssl_mail_client (found by Marc Abel). 2786 * Fix net_accept() regarding non-blocking sockets (found by Luca Pesce). 2787 * ssl_read() could return non-application data records on server while 2788 renegotation was pending, and on client when a HelloRequest was received. 2789 * Fix warnings from Clang's scan-build (contributed by Alfred Klomp). 2790 2791Changes 2792 * X.509 certificates with more than one AttributeTypeAndValue per 2793 RelativeDistinguishedName are not accepted any more. 2794 * ssl_read() now returns POLARSSL_ERR_NET_WANT_READ rather than 2795 POLARSSL_ERR_SSL_UNEXPECTED_MESSAGE on harmless alerts. 2796 * Accept spaces at end of line or end of buffer in base64_decode(). 2797 2798= Version 1.2.11 released 2014-07-11 2799Features 2800 * Entropy module now supports seed writing and reading 2801 2802Changes 2803 * Introduced POLARSSL_HAVE_READDIR_R for systems without it 2804 * Improvements to the CMake build system, contributed by Julian Ospald. 2805 * Work around a bug of the version of Clang shipped by Apple with Mavericks 2806 that prevented bignum.c from compiling. (Reported by Rafael Baptista.) 2807 * Improvements to tests/Makefile, contributed by Oden Eriksson. 2808 * Use UTC time to check certificate validity. 2809 * Reject certificates with times not in UTC, per RFC 5280. 2810 * Migrate zeroizing of data to polarssl_zeroize() instead of memset() 2811 against unwanted compiler optimizations 2812 2813Security 2814 * Forbid change of server certificate during renegotiation to prevent 2815 "triple handshake" attack when authentication mode is optional (the 2816 attack was already impossible when authentication is required). 2817 * Check notBefore timestamp of certificates and CRLs from the future. 2818 * Forbid sequence number wrapping 2819 * Prevent potential NULL pointer dereference in ssl_read_record() (found by 2820 TrustInSoft) 2821 * Fix length checking for AEAD ciphersuites (found by Codenomicon). 2822 It was possible to crash the server (and client) using crafted messages 2823 when a GCM suite was chosen. 2824 2825Bugfix 2826 * Fixed X.509 hostname comparison (with non-regular characters) 2827 * SSL now gracefully handles missing RNG 2828 * crypt_and_hash app checks MAC before final decryption 2829 * Fixed x509_crt_parse_path() bug on Windows platforms 2830 * Added missing MPI_CHK() around some statements in mpi_div_mpi() (found by 2831 TrustInSoft) 2832 * Fixed potential overflow in certificate size verification in 2833 ssl_write_certificate() (found by TrustInSoft) 2834 * Fix ASM format in bn_mul.h 2835 * Potential memory leak in bignum_selftest() 2836 * Replaced expired test certificate 2837 * ssl_mail_client now terminates lines with CRLF, instead of LF 2838 * Fix bug in RSA PKCS#1 v1.5 "reversed" operations 2839 * Fixed testing with out-of-source builds using cmake 2840 * Fixed version-major intolerance in server 2841 * Fixed CMake symlinking on out-of-source builds 2842 * Bignum's MIPS-32 assembly was used on MIPS-64, causing chaos. (Found by 2843 Alex Wilson.) 2844 * ssl_init() was leaving a dirty pointer in ssl_context if malloc of 2845 out_ctr failed 2846 * ssl_handshake_init() was leaving dirty pointers in subcontexts if malloc 2847 of one of them failed 2848 * x509_get_current_time() uses localtime_r() to prevent thread issues 2849 * Some example server programs were not sending the close_notify alert. 2850 * Potential memory leak in mpi_exp_mod() when error occurs during 2851 calculation of RR. 2852 * Improve interoperability by not writing extension length in ClientHello 2853 when no extensions are present (found by Matthew Page) 2854 * rsa_check_pubkey() now allows an E up to N 2855 * On OpenBSD, use arc4random_buf() instead of rand() to prevent warnings 2856 * mpi_fill_random() was creating numbers larger than requested on 2857 big-endian platform when size was not an integer number of limbs 2858 * Fix detection of DragonflyBSD in net.c (found by Markus Pfeiffer) 2859 * Stricter check on SSL ClientHello internal sizes compared to actual packet 2860 size (found by TrustInSoft) 2861 * Fix preprocessor checks for bn_mul PPC asm (found by Barry K. Nathan). 2862 * Use \n\t rather than semicolons for bn_mul asm, since some assemblers 2863 interpret semicolons as comment delimiters (found by Barry K. Nathan). 2864 * Disable broken Sparc64 bn_mul assembly (found by Florian Obser). 2865 * Fix base64_decode() to return and check length correctly (in case of 2866 tight buffers) 2867 2868= Version 1.2.10 released 2013-10-07 2869Changes 2870 * Changed RSA blinding to a slower but thread-safe version 2871 2872Bugfix 2873 * Fixed memory leak in RSA as a result of introduction of blinding 2874 * Fixed ssl_pkcs11_decrypt() prototype 2875 * Fixed MSVC project files 2876 2877= Version 1.2.9 released 2013-10-01 2878Changes 2879 * x509_verify() now case insensitive for cn (RFC 6125 6.4) 2880 2881Bugfix 2882 * Fixed potential memory leak when failing to resume a session 2883 * Fixed potential file descriptor leaks (found by Remi Gacogne) 2884 * Minor fixes 2885 2886Security 2887 * Fixed potential heap buffer overflow on large hostname setting 2888 * Fixed potential negative value misinterpretation in load_file() 2889 * RSA blinding on CRT operations to counter timing attacks 2890 (found by Cyril Arnaud and Pierre-Alain Fouque) 2891 2892= Version 1.2.8 released 2013-06-19 2893Features 2894 * Parsing of PKCS#8 encrypted private key files 2895 * PKCS#12 PBE and derivation functions 2896 * Centralized module option values in config.h to allow user-defined 2897 settings without editing header files by using POLARSSL_CONFIG_OPTIONS 2898 2899Changes 2900 * HAVEGE random generator disabled by default 2901 * Internally split up x509parse_key() into a (PEM) handler function 2902 and specific DER parser functions for the PKCS#1 and unencrypted 2903 PKCS#8 private key formats 2904 * Added mechanism to provide alternative implementations for all 2905 symmetric cipher and hash algorithms (e.g. POLARSSL_AES_ALT in 2906 config.h) 2907 * PKCS#5 module added. Moved PBKDF2 functionality inside and deprecated 2908 old PBKDF2 module 2909 2910Bugfix 2911 * Secure renegotiation extension should only be sent in case client 2912 supports secure renegotiation 2913 * Fixed offset for cert_type list in ssl_parse_certificate_request() 2914 * Fixed const correctness issues that have no impact on the ABI 2915 * x509parse_crt() now better handles PEM error situations 2916 * ssl_parse_certificate() now calls x509parse_crt_der() directly 2917 instead of the x509parse_crt() wrapper that can also parse PEM 2918 certificates 2919 * x509parse_crtpath() is now reentrant and uses more portable stat() 2920 * Fixed bignum.c and bn_mul.h to support Thumb2 and LLVM compiler 2921 * Fixed values for 2-key Triple DES in cipher layer 2922 * ssl_write_certificate_request() can handle empty ca_chain 2923 2924Security 2925 * A possible DoS during the SSL Handshake, due to faulty parsing of 2926 PEM-encoded certificates has been fixed (found by Jack Lloyd) 2927 2928= Version 1.2.7 released 2013-04-13 2929Features 2930 * Ability to specify allowed ciphersuites based on the protocol version. 2931 2932Changes 2933 * Default Blowfish keysize is now 128-bits 2934 * Test suites made smaller to accommodate Raspberry Pi 2935 2936Bugfix 2937 * Fix for MPI assembly for ARM 2938 * GCM adapted to support sizes > 2^29 2939 2940= Version 1.2.6 released 2013-03-11 2941Bugfix 2942 * Fixed memory leak in ssl_free() and ssl_reset() for active session 2943 * Corrected GCM counter incrementation to use only 32-bits instead of 2944 128-bits (found by Yawning Angel) 2945 * Fixes for 64-bit compilation with MS Visual Studio 2946 * Fixed net_bind() for specified IP addresses on little endian systems 2947 * Fixed assembly code for ARM (Thumb and regular) for some compilers 2948 2949Changes 2950 * Internally split up rsa_pkcs1_encrypt(), rsa_pkcs1_decrypt(), 2951 rsa_pkcs1_sign() and rsa_pkcs1_verify() to separate PKCS#1 v1.5 and 2952 PKCS#1 v2.1 functions 2953 * Added support for custom labels when using rsa_rsaes_oaep_encrypt() 2954 or rsa_rsaes_oaep_decrypt() 2955 * Re-added handling for SSLv2 Client Hello when the define 2956 POLARSSL_SSL_SRV_SUPPORT_SSLV2_CLIENT_HELLO is set 2957 * The SSL session cache module (ssl_cache) now also retains peer_cert 2958 information (not the entire chain) 2959 2960Security 2961 * Removed further timing differences during SSL message decryption in 2962 ssl_decrypt_buf() 2963 * Removed timing differences due to bad padding from 2964 rsa_rsaes_pkcs1_v15_decrypt() and rsa_pkcs1_decrypt() for PKCS#1 v1.5 2965 operations 2966 2967= Version 1.2.5 released 2013-02-02 2968Changes 2969 * Allow enabling of dummy error_strerror() to support some use-cases 2970 * Debug messages about padding errors during SSL message decryption are 2971 disabled by default and can be enabled with POLARSSL_SSL_DEBUG_ALL 2972 * Sending of security-relevant alert messages that do not break 2973 interoperability can be switched on/off with the flag 2974 POLARSSL_SSL_ALL_ALERT_MESSAGES 2975 2976Security 2977 * Removed timing differences during SSL message decryption in 2978 ssl_decrypt_buf() due to badly formatted padding 2979 2980= Version 1.2.4 released 2013-01-25 2981Changes 2982 * More advanced SSL ciphersuite representation and moved to more dynamic 2983 SSL core 2984 * Added ssl_handshake_step() to allow single stepping the handshake process 2985 2986Bugfix 2987 * Memory leak when using RSA_PKCS_V21 operations fixed 2988 * Handle future version properly in ssl_write_certificate_request() 2989 * Correctly handle CertificateRequest message in client for <= TLS 1.1 2990 without DN list 2991 2992= Version 1.2.3 released 2012-11-26 2993Bugfix 2994 * Server not always sending correct CertificateRequest message 2995 2996= Version 1.2.2 released 2012-11-24 2997Changes 2998 * Added p_hw_data to ssl_context for context specific hardware acceleration 2999 data 3000 * During verify trust-CA is only checked for expiration and CRL presence 3001 3002Bugfixes 3003 * Fixed client authentication compatibility 3004 * Fixed dependency on POLARSSL_SHA4_C in SSL modules 3005 3006= Version 1.2.1 released 2012-11-20 3007Changes 3008 * Depth that the certificate verify callback receives is now numbered 3009 bottom-up (Peer cert depth is 0) 3010 3011Bugfixes 3012 * Fixes for MSVC6 3013 * Moved mpi_inv_mod() outside POLARSSL_GENPRIME 3014 * Allow R and A to point to same mpi in mpi_div_mpi (found by Manuel 3015 Pégourié-Gonnard) 3016 * Fixed possible segfault in mpi_shift_r() (found by Manuel 3017 Pégourié-Gonnard) 3018 * Added max length check for rsa_pkcs1_sign with PKCS#1 v2.1 3019 3020= Version 1.2.0 released 2012-10-31 3021Features 3022 * Added support for NULL cipher (POLARSSL_CIPHER_NULL_CIPHER) and weak 3023 ciphersuites (POLARSSL_ENABLE_WEAK_CIPHERSUITES). They are disabled by 3024 default! 3025 * Added support for wildcard certificates 3026 * Added support for multi-domain certificates through the X509 Subject 3027 Alternative Name extension 3028 * Added preliminary ASN.1 buffer writing support 3029 * Added preliminary X509 Certificate Request writing support 3030 * Added key_app_writer example application 3031 * Added cert_req example application 3032 * Added base Galois Counter Mode (GCM) for AES 3033 * Added TLS 1.2 support (RFC 5246) 3034 * Added GCM suites to TLS 1.2 (RFC 5288) 3035 * Added commandline error code convertor (util/strerror) 3036 * Added support for Hardware Acceleration hooking in SSL/TLS 3037 * Added OpenSSL / PolarSSL compatibility script (tests/compat.sh) and 3038 example application (programs/ssl/o_p_test) (requires OpenSSL) 3039 * Added X509 CA Path support 3040 * Added Thumb assembly optimizations 3041 * Added DEFLATE compression support as per RFC3749 (requires zlib) 3042 * Added blowfish algorithm (Generic and cipher layer) 3043 * Added PKCS#5 PBKDF2 key derivation function 3044 * Added Secure Renegotiation (RFC 5746) 3045 * Added predefined DHM groups from RFC 5114 3046 * Added simple SSL session cache implementation 3047 * Added ServerName extension parsing (SNI) at server side 3048 * Added option to add minimum accepted SSL/TLS protocol version 3049 3050Changes 3051 * Removed redundant POLARSSL_DEBUG_MSG define 3052 * AES code only check for Padlock once 3053 * Fixed const-correctness mpi_get_bit() 3054 * Documentation for mpi_lsb() and mpi_msb() 3055 * Moved out_msg to out_hdr + 32 to support hardware acceleration 3056 * Changed certificate verify behaviour to comply with RFC 6125 section 6.3 3057 to not match CN if subjectAltName extension is present (Closes ticket #56) 3058 * Cipher layer cipher_mode_t POLARSSL_MODE_CFB128 is renamed to 3059 POLARSSL_MODE_CFB, to also handle different block size CFB modes. 3060 * Removed handling for SSLv2 Client Hello (as per RFC 5246 recommendation) 3061 * Revamped session resumption handling 3062 * Generalized external private key implementation handling (like PKCS#11) 3063 in SSL/TLS 3064 * Revamped x509_verify() and the SSL f_vrfy callback implementations 3065 * Moved from unsigned long to fixed width uint32_t types throughout code 3066 * Renamed ciphersuites naming scheme to IANA reserved names 3067 3068Bugfix 3069 * Fixed handling error in mpi_cmp_mpi() on longer B values (found by 3070 Hui Dong) 3071 * Fixed potential heap corruption in x509_name allocation 3072 * Fixed single RSA test that failed on Big Endian systems (Closes ticket #54) 3073 * mpi_exp_mod() now correctly handles negative base numbers (Closes ticket 3074 #52) 3075 * Handle encryption with private key and decryption with public key as per 3076 RFC 2313 3077 * Handle empty certificate subject names 3078 * Prevent reading over buffer boundaries on X509 certificate parsing 3079 * mpi_add_abs() now correctly handles adding short numbers to long numbers 3080 with carry rollover (found by Ruslan Yushchenko) 3081 * Handle existence of OpenSSL Trust Extensions at end of X.509 DER blob 3082 * Fixed MPI assembly for SPARC64 platform 3083 3084Security 3085 * Fixed potential memory zeroization on miscrafted RSA key (found by Eloi 3086 Vanderbeken) 3087 3088= Version 1.1.8 released on 2013-10-01 3089Bugfix 3090 * Fixed potential memory leak when failing to resume a session 3091 * Fixed potential file descriptor leaks 3092 3093Security 3094 * Potential buffer-overflow for ssl_read_record() (independently found by 3095 both TrustInSoft and Paul Brodeur of Leviathan Security Group) 3096 * Potential negative value misinterpretation in load_file() 3097 * Potential heap buffer overflow on large hostname setting 3098 3099= Version 1.1.7 released on 2013-06-19 3100Changes 3101 * HAVEGE random generator disabled by default 3102 3103Bugfix 3104 * x509parse_crt() now better handles PEM error situations 3105 * ssl_parse_certificate() now calls x509parse_crt_der() directly 3106 instead of the x509parse_crt() wrapper that can also parse PEM 3107 certificates 3108 * Fixed values for 2-key Triple DES in cipher layer 3109 * ssl_write_certificate_request() can handle empty ca_chain 3110 3111Security 3112 * A possible DoS during the SSL Handshake, due to faulty parsing of 3113 PEM-encoded certificates has been fixed (found by Jack Lloyd) 3114 3115= Version 1.1.6 released on 2013-03-11 3116Bugfix 3117 * Fixed net_bind() for specified IP addresses on little endian systems 3118 3119Changes 3120 * Allow enabling of dummy error_strerror() to support some use-cases 3121 * Debug messages about padding errors during SSL message decryption are 3122 disabled by default and can be enabled with POLARSSL_SSL_DEBUG_ALL 3123 3124Security 3125 * Removed timing differences during SSL message decryption in 3126 ssl_decrypt_buf() 3127 * Removed timing differences due to bad padding from 3128 rsa_rsaes_pkcs1_v15_decrypt() and rsa_pkcs1_decrypt() for PKCS#1 v1.5 3129 operations 3130 3131= Version 1.1.5 released on 2013-01-16 3132Bugfix 3133 * Fixed MPI assembly for SPARC64 platform 3134 * Handle existence of OpenSSL Trust Extensions at end of X.509 DER blob 3135 * mpi_add_abs() now correctly handles adding short numbers to long numbers 3136 with carry rollover 3137 * Moved mpi_inv_mod() outside POLARSSL_GENPRIME 3138 * Prevent reading over buffer boundaries on X509 certificate parsing 3139 * mpi_exp_mod() now correctly handles negative base numbers (Closes ticket 3140 #52) 3141 * Fixed possible segfault in mpi_shift_r() (found by Manuel 3142 Pégourié-Gonnard) 3143 * Allow R and A to point to same mpi in mpi_div_mpi (found by Manuel 3144 Pégourié-Gonnard) 3145 * Added max length check for rsa_pkcs1_sign with PKCS#1 v2.1 3146 * Memory leak when using RSA_PKCS_V21 operations fixed 3147 * Handle encryption with private key and decryption with public key as per 3148 RFC 2313 3149 * Fixes for MSVC6 3150 3151Security 3152 * Fixed potential memory zeroization on miscrafted RSA key (found by Eloi 3153 Vanderbeken) 3154 3155= Version 1.1.4 released on 2012-05-31 3156Bugfix 3157 * Correctly handle empty SSL/TLS packets (Found by James Yonan) 3158 * Fixed potential heap corruption in x509_name allocation 3159 * Fixed single RSA test that failed on Big Endian systems (Closes ticket #54) 3160 3161= Version 1.1.3 released on 2012-04-29 3162Bugfix 3163 * Fixed random MPI generation to not generate more size than requested. 3164 3165= Version 1.1.2 released on 2012-04-26 3166Bugfix 3167 * Fixed handling error in mpi_cmp_mpi() on longer B values (found by 3168 Hui Dong) 3169 3170Security 3171 * Fixed potential memory corruption on miscrafted client messages (found by 3172 Frama-C team at CEA LIST) 3173 * Fixed generation of DHM parameters to correct length (found by Ruslan 3174 Yushchenko) 3175 3176= Version 1.1.1 released on 2012-01-23 3177Bugfix 3178 * Check for failed malloc() in ssl_set_hostname() and x509_get_entries() 3179 (Closes ticket #47, found by Hugo Leisink) 3180 * Fixed issues with Intel compiler on 64-bit systems (Closes ticket #50) 3181 * Fixed multiple compiler warnings for VS6 and armcc 3182 * Fixed bug in CTR_CRBG selftest 3183 3184= Version 1.1.0 released on 2011-12-22 3185Features 3186 * Added ssl_session_reset() to allow better multi-connection pools of 3187 SSL contexts without needing to set all non-connection-specific 3188 data and pointers again. Adapted ssl_server to use this functionality. 3189 * Added ssl_set_max_version() to allow clients to offer a lower maximum 3190 supported version to a server to help buggy server implementations. 3191 (Closes ticket #36) 3192 * Added cipher_get_cipher_mode() and cipher_get_cipher_operation() 3193 introspection functions (Closes ticket #40) 3194 * Added CTR_DRBG based on AES-256-CTR (NIST SP 800-90) random generator 3195 * Added a generic entropy accumulator that provides support for adding 3196 custom entropy sources and added some generic and platform dependent 3197 entropy sources 3198 3199Changes 3200 * Documentation for AES and Camellia in modes CTR and CFB128 clarified. 3201 * Fixed rsa_encrypt and rsa_decrypt examples to use public key for 3202 encryption and private key for decryption. (Closes ticket #34) 3203 * Inceased maximum size of ASN1 length reads to 32-bits. 3204 * Added an EXPLICIT tag number parameter to x509_get_ext() 3205 * Added a separate CRL entry extension parsing function 3206 * Separated the ASN.1 parsing code from the X.509 specific parsing code. 3207 So now there is a module that is controlled with POLARSSL_ASN1_PARSE_C. 3208 * Changed the defined key-length of DES ciphers in cipher.h to include the 3209 parity bits, to prevent mistakes in copying data. (Closes ticket #33) 3210 * Loads of minimal changes to better support WINCE as a build target 3211 (Credits go to Marco Lizza) 3212 * Added POLARSSL_MPI_WINDOW_SIZE definition to allow easier time to memory 3213 trade-off 3214 * Introduced POLARSSL_MPI_MAX_SIZE and POLARSSL_MPI_MAX_BITS for MPI size 3215 management (Closes ticket #44) 3216 * Changed the used random function pointer to more flexible format. Renamed 3217 havege_rand() to havege_random() to prevent mistakes. Lots of changes as 3218 a consequence in library code and programs 3219 * Moved all examples programs to use the new entropy and CTR_DRBG 3220 * Added permissive certificate parsing to x509parse_crt() and 3221 x509parse_crtfile(). With permissive parsing the parsing does not stop on 3222 encountering a parse-error. Beware that the meaning of return values has 3223 changed! 3224 * All error codes are now negative. Even on mermory failures and IO errors. 3225 3226Bugfix 3227 * Fixed faulty HMAC-MD2 implementation. Found by dibac. (Closes 3228 ticket #37) 3229 * Fixed a bug where the CRL parser expected an EXPLICIT ASN.1 tag 3230 before version numbers 3231 * Allowed X509 key usage parsing to accept 4 byte values instead of the 3232 standard 1 byte version sometimes used by Microsoft. (Closes ticket #38) 3233 * Fixed incorrect behaviour in case of RSASSA-PSS with a salt length 3234 smaller than the hash length. (Closes ticket #41) 3235 * If certificate serial is longer than 32 octets, serial number is now 3236 appended with '....' after first 28 octets 3237 * Improved build support for s390x and sparc64 in bignum.h 3238 * Fixed MS Visual C++ name clash with int64 in sha4.h 3239 * Corrected removal of leading "00:" in printing serial numbers in 3240 certificates and CRLs 3241 3242= Version 1.0.0 released on 2011-07-27 3243Features 3244 * Expanded cipher layer with support for CFB128 and CTR mode 3245 * Added rsa_encrypt and rsa_decrypt simple example programs. 3246 3247Changes 3248 * The generic cipher and message digest layer now have normal error 3249 codes instead of integers 3250 3251Bugfix 3252 * Undid faulty bug fix in ssl_write() when flushing old data (Ticket 3253 #18) 3254 3255= Version 0.99-pre5 released on 2011-05-26 3256Features 3257 * Added additional Cipher Block Modes to symmetric ciphers 3258 (AES CTR, Camellia CTR, XTEA CBC) including the option to 3259 enable and disable individual modes when needed 3260 * Functions requiring File System functions can now be disabled 3261 by undefining POLARSSL_FS_IO 3262 * A error_strerror function() has been added to translate between 3263 error codes and their description. 3264 * Added mpi_get_bit() and mpi_set_bit() individual bit setter/getter 3265 functions. 3266 * Added ssl_mail_client and ssl_fork_server as example programs. 3267 3268Changes 3269 * Major argument / variable rewrite. Introduced use of size_t 3270 instead of int for buffer lengths and loop variables for 3271 better unsigned / signed use. Renamed internal bigint types 3272 t_int and t_dbl to t_uint and t_udbl in the process 3273 * mpi_init() and mpi_free() now only accept a single MPI 3274 argument and do not accept variable argument lists anymore. 3275 * The error codes have been remapped and combining error codes 3276 is now done with a PLUS instead of an OR as error codes 3277 used are negative. 3278 * Changed behaviour of net_read(), ssl_fetch_input() and ssl_recv(). 3279 net_recv() now returns 0 on EOF instead of 3280 POLARSSL_ERR_NET_CONN_RESET. ssl_fetch_input() returns 3281 POLARSSL_ERR_SSL_CONN_EOF on an EOF from its f_recv() function. 3282 ssl_read() returns 0 if a POLARSSL_ERR_SSL_CONN_EOF is received 3283 after the handshake. 3284 * Network functions now return POLARSSL_ERR_NET_WANT_READ or 3285 POLARSSL_ERR_NET_WANT_WRITE instead of the ambiguous 3286 POLARSSL_ERR_NET_TRY_AGAIN 3287 3288= Version 0.99-pre4 released on 2011-04-01 3289Features 3290 * Added support for PKCS#1 v2.1 encoding and thus support 3291 for the RSAES-OAEP and RSASSA-PSS operations. 3292 * Reading of Public Key files incorporated into default x509 3293 functionality as well. 3294 * Added mpi_fill_random() for centralized filling of big numbers 3295 with random data (Fixed ticket #10) 3296 3297Changes 3298 * Debug print of MPI now removes leading zero octets and 3299 displays actual bit size of the value. 3300 * x509parse_key() (and as a consequence x509parse_keyfile()) 3301 does not zeroize memory in advance anymore. Use rsa_init() 3302 before parsing a key or keyfile! 3303 3304Bugfix 3305 * Debug output of MPI's now the same independent of underlying 3306 platform (32-bit / 64-bit) (Fixes ticket #19, found by Mads 3307 Kiilerich and Mihai Militaru) 3308 * Fixed bug in ssl_write() when flushing old data (Fixed ticket 3309 #18, found by Nikolay Epifanov) 3310 * Fixed proper handling of RSASSA-PSS verification with variable 3311 length salt lengths 3312 3313= Version 0.99-pre3 released on 2011-02-28 3314This release replaces version 0.99-pre2 which had possible copyright issues. 3315Features 3316 * Parsing PEM private keys encrypted with DES and AES 3317 are now supported as well (Fixes ticket #5) 3318 * Added crl_app program to allow easy reading and 3319 printing of X509 CRLs from file 3320 3321Changes 3322 * Parsing of PEM files moved to separate module (Fixes 3323 ticket #13). Also possible to remove PEM support for 3324 systems only using DER encoding 3325 3326Bugfixes 3327 * Corrected parsing of UTCTime dates before 1990 and 3328 after 1950 3329 * Support more exotic OID's when parsing certificates 3330 (found by Mads Kiilerich) 3331 * Support more exotic name representations when parsing 3332 certificates (found by Mads Kiilerich) 3333 * Replaced the expired test certificates 3334 * Do not bail out if no client certificate specified. Try 3335 to negotiate anonymous connection (Fixes ticket #12, 3336 found by Boris Krasnovskiy) 3337 3338Security fixes 3339 * Fixed a possible Man-in-the-Middle attack on the 3340 Diffie Hellman key exchange (thanks to Larry Highsmith, 3341 Subreption LLC) 3342 3343= Version 0.99-pre1 released on 2011-01-30 3344Features 3345Note: Most of these features have been donated by Fox-IT 3346 * Added Doxygen source code documentation parts 3347 * Added reading of DHM context from memory and file 3348 * Improved X509 certificate parsing to include extended 3349 certificate fields, including Key Usage 3350 * Improved certificate verification and verification 3351 against the available CRLs 3352 * Detection for DES weak keys and parity bits added 3353 * Improvements to support integration in other 3354 applications: 3355 + Added generic message digest and cipher wrapper 3356 + Improved information about current capabilities, 3357 status, objects and configuration 3358 + Added verification callback on certificate chain 3359 verification to allow external blacklisting 3360 + Additional example programs to show usage 3361 * Added support for PKCS#11 through the use of the 3362 libpkcs11-helper library 3363 3364Changes 3365 * x509parse_time_expired() checks time in addition to 3366 the existing date check 3367 * The ciphers member of ssl_context and the cipher member 3368 of ssl_session have been renamed to ciphersuites and 3369 ciphersuite respectively. This clarifies the difference 3370 with the generic cipher layer and is better naming 3371 altogether 3372 3373= Version 0.14.0 released on 2010-08-16 3374Features 3375 * Added support for SSL_EDH_RSA_AES_128_SHA and 3376 SSL_EDH_RSA_CAMELLIA_128_SHA ciphersuites 3377 * Added compile-time and run-time version information 3378 * Expanded ssl_client2 arguments for more flexibility 3379 * Added support for TLS v1.1 3380 3381Changes 3382 * Made Makefile cleaner 3383 * Removed dependency on rand() in rsa_pkcs1_encrypt(). 3384 Now using random fuction provided to function and 3385 changed the prototype of rsa_pkcs1_encrypt(), 3386 rsa_init() and rsa_gen_key(). 3387 * Some SSL defines were renamed in order to avoid 3388 future confusion 3389 3390Bug fixes 3391 * Fixed CMake out of source build for tests (found by 3392 kkert) 3393 * rsa_check_private() now supports PKCS1v2 keys as well 3394 * Fixed deadlock in rsa_pkcs1_encrypt() on failing random 3395 generator 3396 3397= Version 0.13.1 released on 2010-03-24 3398Bug fixes 3399 * Fixed Makefile in library that was mistakenly merged 3400 * Added missing const string fixes 3401 3402= Version 0.13.0 released on 2010-03-21 3403Features 3404 * Added option parsing for host and port selection to 3405 ssl_client2 3406 * Added support for GeneralizedTime in X509 parsing 3407 * Added cert_app program to allow easy reading and 3408 printing of X509 certificates from file or SSL 3409 connection. 3410 3411Changes 3412 * Added const correctness for main code base 3413 * X509 signature algorithm determination is now 3414 in a function to allow easy future expansion 3415 * Changed symmetric cipher functions to 3416 identical interface (returning int result values) 3417 * Changed ARC4 to use separate input/output buffer 3418 * Added reset function for HMAC context as speed-up 3419 for specific use-cases 3420 3421Bug fixes 3422 * Fixed bug resulting in failure to send the last 3423 certificate in the chain in ssl_write_certificate() and 3424 ssl_write_certificate_request() (found by fatbob) 3425 * Added small fixes for compiler warnings on a Mac 3426 (found by Frank de Brabander) 3427 * Fixed algorithmic bug in mpi_is_prime() (found by 3428 Smbat Tonoyan) 3429 3430= Version 0.12.1 released on 2009-10-04 3431Changes 3432 * Coverage test definitions now support 'depends_on' 3433 tagging system. 3434 * Tests requiring specific hashing algorithms now honor 3435 the defines. 3436 3437Bug fixes 3438 * Changed typo in #ifdef in x509parse.c (found 3439 by Eduardo) 3440 3441= Version 0.12.0 released on 2009-07-28 3442Features 3443 * Added CMake makefiles as alternative to regular Makefiles. 3444 * Added preliminary Code Coverage tests for AES, ARC4, 3445 Base64, MPI, SHA-family, MD-family, HMAC-SHA-family, 3446 Camellia, DES, 3-DES, RSA PKCS#1, XTEA, Diffie-Hellman 3447 and X509parse. 3448 3449Changes 3450 * Error codes are not (necessarily) negative. Keep 3451 this is mind when checking for errors. 3452 * RSA_RAW renamed to SIG_RSA_RAW for consistency. 3453 * Fixed typo in name of POLARSSL_ERR_RSA_OUTPUT_TOO_LARGE. 3454 * Changed interface for AES and Camellia setkey functions 3455 to indicate invalid key lengths. 3456 3457Bug fixes 3458 * Fixed include location of endian.h on FreeBSD (found by 3459 Gabriel) 3460 * Fixed include location of endian.h and name clash on 3461 Apples (found by Martin van Hensbergen) 3462 * Fixed HMAC-MD2 by modifying md2_starts(), so that the 3463 required HMAC ipad and opad variables are not cleared. 3464 (found by code coverage tests) 3465 * Prevented use of long long in bignum if 3466 POLARSSL_HAVE_LONGLONG not defined (found by Giles 3467 Bathgate). 3468 * Fixed incorrect handling of negative strings in 3469 mpi_read_string() (found by code coverage tests). 3470 * Fixed segfault on handling empty rsa_context in 3471 rsa_check_pubkey() and rsa_check_privkey() (found by 3472 code coverage tests). 3473 * Fixed incorrect handling of one single negative input 3474 value in mpi_add_abs() (found by code coverage tests). 3475 * Fixed incorrect handling of negative first input 3476 value in mpi_sub_abs() (found by code coverage tests). 3477 * Fixed incorrect handling of negative first input 3478 value in mpi_mod_mpi() and mpi_mod_int(). Resulting 3479 change also affects mpi_write_string() (found by code 3480 coverage tests). 3481 * Corrected is_prime() results for 0, 1 and 2 (found by 3482 code coverage tests). 3483 * Fixed Camellia and XTEA for 64-bit Windows systems. 3484 3485= Version 0.11.1 released on 2009-05-17 3486 * Fixed missing functionality for SHA-224, SHA-256, SHA384, 3487 SHA-512 in rsa_pkcs1_sign() 3488 3489= Version 0.11.0 released on 2009-05-03 3490 * Fixed a bug in mpi_gcd() so that it also works when both 3491 input numbers are even and added testcases to check 3492 (found by Pierre Habouzit). 3493 * Added support for SHA-224, SHA-256, SHA-384 and SHA-512 3494 one way hash functions with the PKCS#1 v1.5 signing and 3495 verification. 3496 * Fixed minor bug regarding mpi_gcd located within the 3497 POLARSSL_GENPRIME block. 3498 * Fixed minor memory leak in x509parse_crt() and added better 3499 handling of 'full' certificate chains (found by Mathias 3500 Olsson). 3501 * Centralized file opening and reading for x509 files into 3502 load_file() 3503 * Made definition of net_htons() endian-clean for big endian 3504 systems (Found by Gernot). 3505 * Undefining POLARSSL_HAVE_ASM now also handles prevents asm in 3506 padlock and timing code. 3507 * Fixed an off-by-one buffer allocation in ssl_set_hostname() 3508 responsible for crashes and unwanted behaviour. 3509 * Added support for Certificate Revocation List (CRL) parsing. 3510 * Added support for CRL revocation to x509parse_verify() and 3511 SSL/TLS code. 3512 * Fixed compatibility of XTEA and Camellia on a 64-bit system 3513 (found by Felix von Leitner). 3514 3515= Version 0.10.0 released on 2009-01-12 3516 * Migrated XySSL to PolarSSL 3517 * Added XTEA symmetric cipher 3518 * Added Camellia symmetric cipher 3519 * Added support for ciphersuites: SSL_RSA_CAMELLIA_128_SHA, 3520 SSL_RSA_CAMELLIA_256_SHA and SSL_EDH_RSA_CAMELLIA_256_SHA 3521 * Fixed dangerous bug that can cause a heap overflow in 3522 rsa_pkcs1_decrypt (found by Christophe Devine) 3523 3524================================================================ 3525XySSL ChangeLog 3526 3527= Version 0.9 released on 2008-03-16 3528 3529 * Added support for ciphersuite: SSL_RSA_AES_128_SHA 3530 * Enabled support for large files by default in aescrypt2.c 3531 * Preliminary openssl wrapper contributed by David Barrett 3532 * Fixed a bug in ssl_write() that caused the same payload to 3533 be sent twice in non-blocking mode when send returns EAGAIN 3534 * Fixed ssl_parse_client_hello(): session id and challenge must 3535 not be swapped in the SSLv2 ClientHello (found by Greg Robson) 3536 * Added user-defined callback debug function (Krystian Kolodziej) 3537 * Before freeing a certificate, properly zero out all cert. data 3538 * Fixed the "mode" parameter so that encryption/decryption are 3539 not swapped on PadLock; also fixed compilation on older versions 3540 of gcc (bug reported by David Barrett) 3541 * Correctly handle the case in padlock_xcryptcbc() when input or 3542 output data is non-aligned by falling back to the software 3543 implementation, as VIA Nehemiah cannot handle non-aligned buffers 3544 * Fixed a memory leak in x509parse_crt() which was reported by Greg 3545 Robson-Garth; some x509write.c fixes by Pascal Vizeli, thanks to 3546 Matthew Page who reported several bugs 3547 * Fixed x509_get_ext() to accept some rare certificates which have 3548 an INTEGER instead of a BOOLEAN for BasicConstraints::cA. 3549 * Added support on the client side for the TLS "hostname" extension 3550 (patch contributed by David Patino) 3551 * Make x509parse_verify() return BADCERT_CN_MISMATCH when an empty 3552 string is passed as the CN (bug reported by spoofy) 3553 * Added an option to enable/disable the BN assembly code 3554 * Updated rsa_check_privkey() to verify that (D*E) = 1 % (P-1)*(Q-1) 3555 * Disabled obsolete hash functions by default (MD2, MD4); updated 3556 selftest and benchmark to not test ciphers that have been disabled 3557 * Updated x509parse_cert_info() to correctly display byte 0 of the 3558 serial number, setup correct server port in the ssl client example 3559 * Fixed a critical denial-of-service with X.509 cert. verification: 3560 peer may cause xyssl to loop indefinitely by sending a certificate 3561 for which the RSA signature check fails (bug reported by Benoit) 3562 * Added test vectors for: AES-CBC, AES-CFB, DES-CBC and 3DES-CBC, 3563 HMAC-MD5, HMAC-SHA1, HMAC-SHA-256, HMAC-SHA-384, and HMAC-SHA-512 3564 * Fixed HMAC-SHA-384 and HMAC-SHA-512 (thanks to Josh Sinykin) 3565 * Modified ssl_parse_client_key_exchange() to protect against 3566 Daniel Bleichenbacher attack on PKCS#1 v1.5 padding, as well 3567 as the Klima-Pokorny-Rosa extension of Bleichenbacher's attack 3568 * Updated rsa_gen_key() so that ctx->N is always nbits in size 3569 * Fixed assembly PPC compilation errors on Mac OS X, thanks to 3570 David Barrett and Dusan Semen 3571 3572= Version 0.8 released on 2007-10-20 3573 3574 * Modified the HMAC functions to handle keys larger 3575 than 64 bytes, thanks to Stephane Desneux and gary ng 3576 * Fixed ssl_read_record() to properly update the handshake 3577 message digests, which fixes IE6/IE7 client authentication 3578 * Cleaned up the XYSSL* #defines, suggested by Azriel Fasten 3579 * Fixed net_recv(), thanks to Lorenz Schori and Egon Kocjan 3580 * Added user-defined callbacks for handling I/O and sessions 3581 * Added lots of debugging output in the SSL/TLS functions 3582 * Added preliminary X.509 cert. writing by Pascal Vizeli 3583 * Added preliminary support for the VIA PadLock routines 3584 * Added AES-CFB mode of operation, contributed by chmike 3585 * Added an SSL/TLS stress testing program (ssl_test.c) 3586 * Updated the RSA PKCS#1 code to allow choosing between 3587 RSA_PUBLIC and RSA_PRIVATE, as suggested by David Barrett 3588 * Updated ssl_read() to skip 0-length records from OpenSSL 3589 * Fixed the make install target to comply with *BSD make 3590 * Fixed a bug in mpi_read_binary() on 64-bit platforms 3591 * mpi_is_prime() speedups, thanks to Kevin McLaughlin 3592 * Fixed a long standing memory leak in mpi_is_prime() 3593 * Replaced realloc with malloc in mpi_grow(), and set 3594 the sign of zero as positive in mpi_init() (reported 3595 by Jonathan M. McCune) 3596 3597= Version 0.7 released on 2007-07-07 3598 3599 * Added support for the MicroBlaze soft-core processor 3600 * Fixed a bug in ssl_tls.c which sometimes prevented SSL 3601 connections from being established with non-blocking I/O 3602 * Fixed a couple bugs in the VS6 and UNIX Makefiles 3603 * Fixed the "PIC register ebx clobbered in asm" bug 3604 * Added HMAC starts/update/finish support functions 3605 * Added the SHA-224, SHA-384 and SHA-512 hash functions 3606 * Fixed the net_set_*block routines, thanks to Andreas 3607 * Added a few demonstration programs: md5sum, sha1sum, 3608 dh_client, dh_server, rsa_genkey, rsa_sign, rsa_verify 3609 * Added new bignum import and export helper functions 3610 * Rewrote README.txt in program/ssl/ca to better explain 3611 how to create a test PKI 3612 3613= Version 0.6 released on 2007-04-01 3614 3615 * Ciphers used in SSL/TLS can now be disabled at compile 3616 time, to reduce the memory footprint on embedded systems 3617 * Added multiply assembly code for the TriCore and modified 3618 havege_struct for this processor, thanks to David Patiño 3619 * Added multiply assembly code for 64-bit PowerPCs, 3620 thanks to Peking University and the OSU Open Source Lab 3621 * Added experimental support of Quantum Cryptography 3622 * Added support for autoconf, contributed by Arnaud Cornet 3623 * Fixed "long long" compilation issues on IA-64 and PPC64 3624 * Fixed a bug introduced in xyssl-0.5/timing.c: hardclock 3625 was not being correctly defined on ARM and MIPS 3626 3627= Version 0.5 released on 2007-03-01 3628 3629 * Added multiply assembly code for SPARC and Alpha 3630 * Added (beta) support for non-blocking I/O operations 3631 * Implemented session resuming and client authentication 3632 * Fixed some portability issues on WinCE, MINIX 3, Plan9 3633 (thanks to Benjamin Newman), HP-UX, FreeBSD and Solaris 3634 * Improved the performance of the EDH key exchange 3635 * Fixed a bug that caused valid packets with a payload 3636 size of 16384 bytes to be rejected 3637 3638= Version 0.4 released on 2007-02-01 3639 3640 * Added support for Ephemeral Diffie-Hellman key exchange 3641 * Added multiply asm code for SSE2, ARM, PPC, MIPS and M68K 3642 * Various improvement to the modular exponentiation code 3643 * Rewrote the headers to generate the API docs with doxygen 3644 * Fixed a bug in ssl_encrypt_buf (incorrect padding was 3645 generated) and in ssl_parse_client_hello (max. client 3646 version was not properly set), thanks to Didier Rebeix 3647 * Fixed another bug in ssl_parse_client_hello: clients with 3648 cipherlists larger than 96 bytes were incorrectly rejected 3649 * Fixed a couple memory leak in x509_read.c 3650 3651= Version 0.3 released on 2007-01-01 3652 3653 * Added server-side SSLv3 and TLSv1.0 support 3654 * Multiple fixes to enhance the compatibility with g++, 3655 thanks to Xosé Antón Otero Ferreira 3656 * Fixed a bug in the CBC code, thanks to dowst; also, 3657 the bignum code is no longer dependent on long long 3658 * Updated rsa_pkcs1_sign to handle arbitrary large inputs 3659 * Updated timing.c for improved compatibility with i386 3660 and 486 processors, thanks to Arnaud Cornet 3661 3662= Version 0.2 released on 2006-12-01 3663 3664 * Updated timing.c to support ARM and MIPS arch 3665 * Updated the MPI code to support 8086 on MSVC 1.5 3666 * Added the copyright notice at the top of havege.h 3667 * Fixed a bug in sha2_hmac, thanks to newsoft/Wenfang Zhang 3668 * Fixed a bug reported by Adrian Rüegsegger in x509_read_key 3669 * Fixed a bug reported by Torsten Lauter in ssl_read_record 3670 * Fixed a bug in rsa_check_privkey that would wrongly cause 3671 valid RSA keys to be dismissed (thanks to oldwolf) 3672 * Fixed a bug in mpi_is_prime that caused some primes to fail 3673 the Miller-Rabin primality test 3674 3675 I'd also like to thank Younès Hafri for the CRUX linux port, 3676 Khalil Petit who added XySSL into pkgsrc and Arnaud Cornet 3677 who maintains the Debian package :-) 3678 3679= Version 0.1 released on 2006-11-01 3680