xref: /optee_os/core/crypto.mk (revision c44d734b6366cbf4d12610310e809872db65f89d) 
1CFG_CRYPTO ?= y
2# Select small code size in the crypto library if applicable (for instance
3# LibTomCrypt has -DLTC_SMALL_CODE)
4# Note: the compiler flag -Os is not set here but by CFG_CC_OPT_LEVEL
5CFG_CRYPTO_SIZE_OPTIMIZATION ?= y
6
7ifeq (y,$(CFG_CRYPTO))
8
9# Ciphers
10CFG_CRYPTO_AES ?= y
11CFG_CRYPTO_DES ?= y
12CFG_CRYPTO_SM4 ?= y
13
14# Cipher block modes
15CFG_CRYPTO_ECB ?= y
16CFG_CRYPTO_CBC ?= y
17CFG_CRYPTO_CTR ?= y
18CFG_CRYPTO_CTS ?= y
19CFG_CRYPTO_XTS ?= y
20
21# Message authentication codes
22CFG_CRYPTO_HMAC ?= y
23CFG_CRYPTO_CMAC ?= y
24CFG_CRYPTO_CBC_MAC ?= y
25# Instead of calling the AES CBC encryption function for each 16 byte block of
26# input, bundle a maximum of N blocks when possible. A maximum of N*16 bytes of
27# temporary data are allocated on the heap.
28# Minimum value is 1.
29CFG_CRYPTO_CBC_MAC_BUNDLE_BLOCKS ?= 64
30
31# Hashes
32CFG_CRYPTO_MD5 ?= y
33CFG_CRYPTO_SHA1 ?= y
34CFG_CRYPTO_SHA224 ?= y
35CFG_CRYPTO_SHA256 ?= y
36CFG_CRYPTO_SHA384 ?= y
37CFG_CRYPTO_SHA512 ?= y
38CFG_CRYPTO_SHA512_256 ?= y
39CFG_CRYPTO_SM3 ?= y
40
41# Asymmetric ciphers
42CFG_CRYPTO_DSA ?= y
43CFG_CRYPTO_RSA ?= y
44CFG_CRYPTO_DH ?= y
45# ECC includes ECDSA and ECDH
46CFG_CRYPTO_ECC ?= y
47CFG_CRYPTO_SM2_PKE ?= y
48CFG_CRYPTO_SM2_DSA ?= y
49CFG_CRYPTO_SM2_KEP ?= y
50# X25519 is only supported by libtomcrypt
51ifeq ($(CFG_CRYPTOLIB_NAME),tomcrypt)
52CFG_CRYPTO_X25519 ?= y
53endif
54
55# Authenticated encryption
56CFG_CRYPTO_CCM ?= y
57CFG_CRYPTO_GCM ?= y
58# Default uses the OP-TEE internal AES-GCM implementation
59CFG_CRYPTO_AES_GCM_FROM_CRYPTOLIB ?= n
60
61endif
62
63ifeq ($(CFG_WITH_PAGER),y)
64ifneq ($(CFG_CRYPTO_SHA256),y)
65$(warning Warning: Enabling CFG_CRYPTO_SHA256 [required by CFG_WITH_PAGER])
66CFG_CRYPTO_SHA256:=y
67endif
68endif
69
70$(eval $(call cryp-enable-all-depends,CFG_WITH_SOFTWARE_PRNG, AES ECB SHA256))
71
72ifeq ($(CFG_CRYPTO_WITH_CE),y)
73
74$(call force,CFG_AES_GCM_TABLE_BASED,n,conflicts with CFG_CRYPTO_WITH_CE)
75
76# CFG_HWSUPP_PMULT_64 defines whether the CPU supports polynomial multiplies
77# of 64-bit values (Aarch64: PMULL/PMULL2 with the 1Q specifier; Aarch32:
78# VMULL.P64). These operations are part of the Cryptographic Extensions, so
79# assume they are implicitly contained in CFG_CRYPTO_WITH_CE=y.
80CFG_HWSUPP_PMULT_64 ?= y
81
82CFG_CRYPTO_SHA256_ARM_CE ?= $(CFG_CRYPTO_SHA256)
83CFG_CORE_CRYPTO_SHA256_ACCEL ?= $(CFG_CRYPTO_SHA256_ARM_CE)
84CFG_CRYPTO_SHA1_ARM_CE ?= $(CFG_CRYPTO_SHA1)
85CFG_CORE_CRYPTO_SHA1_ACCEL ?= $(CFG_CRYPTO_SHA1_ARM_CE)
86CFG_CRYPTO_AES_ARM_CE ?= $(CFG_CRYPTO_AES)
87CFG_CORE_CRYPTO_AES_ACCEL ?= $(CFG_CRYPTO_AES_ARM_CE)
88
89else #CFG_CRYPTO_WITH_CE
90
91CFG_AES_GCM_TABLE_BASED ?= y
92
93endif #!CFG_CRYPTO_WITH_CE
94
95
96# Cryptographic extensions can only be used safely when OP-TEE knows how to
97# preserve the VFP context
98ifeq ($(CFG_CRYPTO_SHA256_ARM32_CE),y)
99$(call force,CFG_WITH_VFP,y,required by CFG_CRYPTO_SHA256_ARM32_CE)
100endif
101ifeq ($(CFG_CRYPTO_SHA256_ARM64_CE),y)
102$(call force,CFG_WITH_VFP,y,required by CFG_CRYPTO_SHA256_ARM64_CE)
103endif
104ifeq ($(CFG_CRYPTO_SHA1_ARM_CE),y)
105$(call force,CFG_WITH_VFP,y,required by CFG_CRYPTO_SHA1_ARM_CE)
106endif
107ifeq ($(CFG_CRYPTO_AES_ARM_CE),y)
108$(call force,CFG_WITH_VFP,y,required by CFG_CRYPTO_AES_ARM_CE)
109endif
110
111cryp-enable-all-depends = $(call cfg-enable-all-depends,$(strip $(1)),$(foreach v,$(2),CFG_CRYPTO_$(v)))
112$(eval $(call cryp-enable-all-depends,CFG_REE_FS, AES ECB CTR HMAC SHA256 GCM))
113$(eval $(call cryp-enable-all-depends,CFG_RPMB_FS, AES ECB CTR HMAC SHA256 GCM))
114
115# Dependency checks: warn and disable some features if dependencies are not met
116
117cryp-dep-one = $(call cfg-depends-one,CFG_CRYPTO_$(strip $(1)),$(patsubst %, CFG_CRYPTO_%,$(strip $(2))))
118cryp-dep-all = $(call cfg-depends-all,CFG_CRYPTO_$(strip $(1)),$(patsubst %, CFG_CRYPTO_%,$(strip $(2))))
119
120$(eval $(call cryp-dep-one, ECB, AES DES))
121$(eval $(call cryp-dep-one, CBC, AES DES))
122$(eval $(call cryp-dep-one, CTR, AES))
123# CTS is implemented with ECB and CBC
124$(eval $(call cryp-dep-all, CTS, AES ECB CBC))
125$(eval $(call cryp-dep-one, XTS, AES))
126$(eval $(call cryp-dep-one, HMAC, AES DES))
127$(eval $(call cryp-dep-one, HMAC, MD5 SHA1 SHA224 SHA256 SHA384 SHA512))
128$(eval $(call cryp-dep-one, CMAC, AES))
129$(eval $(call cryp-dep-one, CBC_MAC, AES DES))
130$(eval $(call cryp-dep-one, CCM, AES))
131$(eval $(call cryp-dep-one, GCM, AES))
132# If no AES cipher mode is left, disable AES
133$(eval $(call cryp-dep-one, AES, ECB CBC CTR CTS XTS))
134# If no DES cipher mode is left, disable DES
135$(eval $(call cryp-dep-one, DES, ECB CBC))
136# SM2 is Elliptic Curve Cryptography, it uses some generic ECC functions
137$(eval $(call cryp-dep-one, SM2_PKE, ECC))
138$(eval $(call cryp-dep-one, SM2_DSA, ECC))
139$(eval $(call cryp-dep-one, SM2_KEP, ECC))
140
141###############################################################
142# libtomcrypt (LTC) specifics, phase #1
143# LTC is only configured via _CFG_CORE_LTC_ prefixed variables
144#
145# _CFG_CORE_LTC_xxx_DESC means that LTC will only register the
146# descriptor of the algorithm, not provide a
147# crypt_xxx_alloc_ctx() function.
148###############################################################
149
150# If LTC is the cryptolib, pull configuration from CFG_CRYPTO_xxx
151ifeq ($(CFG_CRYPTOLIB_NAME),tomcrypt)
152# dsa_make_params() needs all three SHA-2 algorithms.
153# Disable DSA if any is missing.
154$(eval $(call cryp-dep-all, DSA, SHA256 SHA384 SHA512))
155
156# Assign _CFG_CORE_LTC_xxx based on CFG_CRYPTO_yyy
157core-ltc-vars = AES DES
158core-ltc-vars += ECB CBC CTR CTS XTS
159core-ltc-vars += MD5 SHA1 SHA224 SHA256 SHA384 SHA512 SHA512_256
160core-ltc-vars += HMAC CMAC CBC_MAC
161core-ltc-vars += CCM
162ifeq ($(CFG_CRYPTO_AES_GCM_FROM_CRYPTOLIB),y)
163core-ltc-vars += GCM
164endif
165core-ltc-vars += RSA DSA DH ECC
166core-ltc-vars += SIZE_OPTIMIZATION
167core-ltc-vars += SM2_PKE
168core-ltc-vars += SM2_DSA
169core-ltc-vars += SM2_KEP
170core-ltc-vars += X25519
171# Assigned selected CFG_CRYPTO_xxx as _CFG_CORE_LTC_xxx
172$(foreach v, $(core-ltc-vars), $(eval _CFG_CORE_LTC_$(v) := $(CFG_CRYPTO_$(v))))
173_CFG_CORE_LTC_MPI := $(CFG_CORE_MBEDTLS_MPI)
174_CFG_CORE_LTC_AES_ACCEL := $(CFG_CORE_CRYPTO_AES_ACCEL)
175_CFG_CORE_LTC_SHA1_ACCEL := $(CFG_CORE_CRYPTO_SHA1_ACCEL)
176_CFG_CORE_LTC_SHA256_ACCEL := $(CFG_CORE_CRYPTO_SHA256_ACCEL)
177endif
178
179###############################################################
180# mbedtls specifics
181###############################################################
182
183ifeq ($(CFG_CRYPTOLIB_NAME),mbedtls)
184# mbedtls has to be complemented with some algorithms by LTC
185# Specify the algorithms here
186_CFG_CORE_LTC_DSA := $(CFG_CRYPTO_DSA)
187_CFG_CORE_LTC_MPI := $(CFG_CRYPTO_DSA)
188_CFG_CORE_LTC_SHA256_DESC := $(CFG_CRYPTO_DSA)
189_CFG_CORE_LTC_SHA384_DESC := $(CFG_CRYPTO_DSA)
190_CFG_CORE_LTC_SHA512_DESC := $(CFG_CRYPTO_DSA)
191_CFG_CORE_LTC_XTS := $(CFG_CRYPTO_XTS)
192_CFG_CORE_LTC_CCM := $(CFG_CRYPTO_CCM)
193_CFG_CORE_LTC_AES_DESC := $(call cfg-one-enabled, CFG_CRYPTO_XTS CFG_CRYPTO_CCM)
194$(call force,CFG_CRYPTO_X25519,n,not supported by mbedtls)
195endif
196
197###############################################################
198# libtomcrypt (LTC) specifics, phase #2
199###############################################################
200
201_CFG_CORE_LTC_SHA256_DESC := $(call cfg-one-enabled, _CFG_CORE_LTC_SHA256_DESC \
202						     _CFG_CORE_LTC_SHA224 \
203						     _CFG_CORE_LTC_SHA256)
204_CFG_CORE_LTC_SHA384_DESC := $(call cfg-one-enabled, _CFG_CORE_LTC_SHA384_DESC \
205						     _CFG_CORE_LTC_SHA384)
206_CFG_CORE_LTC_SHA512_DESC := $(call cfg-one-enabled, _CFG_CORE_LTC_SHA512_DESC \
207						     _CFG_CORE_LTC_SHA512_256 \
208						     _CFG_CORE_LTC_SHA512)
209_CFG_CORE_LTC_AES_DESC := $(call cfg-one-enabled, _CFG_CORE_LTC_AES_DESC \
210						  _CFG_CORE_LTC_AES)
211
212# Assign system variables
213_CFG_CORE_LTC_CE := $(CFG_CRYPTO_WITH_CE)
214_CFG_CORE_LTC_VFP := $(CFG_WITH_VFP)
215_CFG_CORE_LTC_BIGNUM_MAX_BITS := $(CFG_CORE_BIGNUM_MAX_BITS)
216_CFG_CORE_LTC_PAGER := $(CFG_WITH_PAGER)
217ifneq ($(CFG_NUM_THREADS),1)
218_CFG_CORE_LTC_OPTEE_THREAD := y
219else
220_CFG_CORE_LTC_OPTEE_THREAD := n
221endif
222_CFG_CORE_LTC_HWSUPP_PMULL := $(CFG_HWSUPP_PMULL)
223
224# Assign aggregated variables
225ltc-one-enabled = $(call cfg-one-enabled,$(foreach v,$(1),_CFG_CORE_LTC_$(v)))
226_CFG_CORE_LTC_ACIPHER := $(call ltc-one-enabled, RSA DSA DH ECC)
227_CFG_CORE_LTC_AUTHENC := $(and $(filter y,$(_CFG_CORE_LTC_AES_DESC)), \
228			       $(filter y,$(call ltc-one-enabled, CCM GCM)))
229_CFG_CORE_LTC_CIPHER := $(call ltc-one-enabled, AES_DESC DES)
230_CFG_CORE_LTC_HASH := $(call ltc-one-enabled, MD5 SHA1 SHA224 SHA256 SHA384 \
231					      SHA512)
232_CFG_CORE_LTC_MAC := $(call ltc-one-enabled, HMAC CMAC CBC_MAC)
233_CFG_CORE_LTC_CBC := $(call ltc-one-enabled, CBC CBC_MAC)
234_CFG_CORE_LTC_ASN1 := $(call ltc-one-enabled, RSA DSA ECC)
235_CFG_CORE_LTC_EC25519 := $(call ltc-one-enabled, X25519)
236
237###############################################################
238# Platform independent crypto-driver configuration
239###############################################################
240CRYPTO_MAKEFILES := $(sort $(wildcard core/drivers/crypto/*/crypto.mk))
241include $(CRYPTO_MAKEFILES)
242
243# Enable TEE_ALG_RSASSA_PKCS1_V1_5 algorithm for signing with PKCS#1 v1.5 EMSA
244# without ASN.1 around the hash.
245ifeq ($(CFG_CRYPTOLIB_NAME),tomcrypt)
246CFG_CRYPTO_RSASSA_NA1 ?= y
247endif
248