xref: /optee_os/core/crypto.mk (revision 12d739bd5028a2d420512ea2c43f0fa1cebb9da1) 
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,$(CFG_CRYPTO))
8
9# Ciphers
10CFG_CRYPTO_AES ?= y
11CFG_CRYPTO_DES ?= y
12CFG_CRYPTO_SM4 ?= y
13
14# Cipher block modes
15CFG_CRYPTO_ECB ?= y
16CFG_CRYPTO_CBC ?= y
17CFG_CRYPTO_CTR ?= y
18CFG_CRYPTO_CTS ?= y
19CFG_CRYPTO_XTS ?= y
20
21# Message authentication codes
22CFG_CRYPTO_HMAC ?= y
23CFG_CRYPTO_CMAC ?= y
24CFG_CRYPTO_CBC_MAC ?= y
25# Instead of calling the AES CBC encryption function for each 16 byte block of
26# input, bundle a maximum of N blocks when possible. A maximum of N*16 bytes of
27# temporary data are allocated on the heap.
28# Minimum value is 1.
29CFG_CRYPTO_CBC_MAC_BUNDLE_BLOCKS ?= 64
30
31# Hashes
32CFG_CRYPTO_MD5 ?= y
33CFG_CRYPTO_SHA1 ?= y
34CFG_CRYPTO_SHA224 ?= y
35CFG_CRYPTO_SHA256 ?= y
36CFG_CRYPTO_SHA384 ?= y
37CFG_CRYPTO_SHA512 ?= y
38CFG_CRYPTO_SHA512_256 ?= y
39CFG_CRYPTO_SM3 ?= y
40
41# Asymmetric ciphers
42CFG_CRYPTO_DSA ?= y
43CFG_CRYPTO_RSA ?= y
44CFG_CRYPTO_DH ?= y
45# ECC includes ECDSA and ECDH
46CFG_CRYPTO_ECC ?= y
47CFG_CRYPTO_SM2_PKE ?= y
48CFG_CRYPTO_SM2_DSA ?= y
49CFG_CRYPTO_SM2_KEP ?= y
50CFG_CRYPTO_ED25519 ?= y
51CFG_CRYPTO_X25519 ?= y
52
53# Authenticated encryption
54CFG_CRYPTO_CCM ?= y
55CFG_CRYPTO_GCM ?= y
56# Default uses the OP-TEE internal AES-GCM implementation
57CFG_CRYPTO_AES_GCM_FROM_CRYPTOLIB ?= n
58
59endif
60
61ifeq ($(CFG_WITH_PAGER),y)
62ifneq ($(CFG_CRYPTO_SHA256),y)
63$(warning Warning: Enabling CFG_CRYPTO_SHA256 [required by CFG_WITH_PAGER])
64CFG_CRYPTO_SHA256:=y
65endif
66endif
67
68$(eval $(call cryp-enable-all-depends,CFG_WITH_SOFTWARE_PRNG, AES ECB SHA256))
69
70ifeq ($(CFG_CRYPTO_WITH_CE),y)
71
72$(call force,CFG_AES_GCM_TABLE_BASED,n,conflicts with CFG_CRYPTO_WITH_CE)
73
74# CFG_HWSUPP_PMULT_64 defines whether the CPU supports polynomial multiplies
75# of 64-bit values (Aarch64: PMULL/PMULL2 with the 1Q specifier; Aarch32:
76# VMULL.P64). These operations are part of the Cryptographic Extensions, so
77# assume they are implicitly contained in CFG_CRYPTO_WITH_CE=y.
78CFG_HWSUPP_PMULT_64 ?= y
79
80CFG_CRYPTO_SHA256_ARM_CE ?= $(CFG_CRYPTO_SHA256)
81CFG_CORE_CRYPTO_SHA256_ACCEL ?= $(CFG_CRYPTO_SHA256_ARM_CE)
82CFG_CRYPTO_SHA1_ARM_CE ?= $(CFG_CRYPTO_SHA1)
83CFG_CORE_CRYPTO_SHA1_ACCEL ?= $(CFG_CRYPTO_SHA1_ARM_CE)
84CFG_CRYPTO_AES_ARM_CE ?= $(CFG_CRYPTO_AES)
85CFG_CORE_CRYPTO_AES_ACCEL ?= $(CFG_CRYPTO_AES_ARM_CE)
86
87else #CFG_CRYPTO_WITH_CE
88
89CFG_AES_GCM_TABLE_BASED ?= y
90
91endif #!CFG_CRYPTO_WITH_CE
92
93
94# Cryptographic extensions can only be used safely when OP-TEE knows how to
95# preserve the VFP context
96ifeq ($(CFG_CRYPTO_SHA256_ARM32_CE),y)
97$(call force,CFG_WITH_VFP,y,required by CFG_CRYPTO_SHA256_ARM32_CE)
98endif
99ifeq ($(CFG_CRYPTO_SHA256_ARM64_CE),y)
100$(call force,CFG_WITH_VFP,y,required by CFG_CRYPTO_SHA256_ARM64_CE)
101endif
102ifeq ($(CFG_CRYPTO_SHA1_ARM_CE),y)
103$(call force,CFG_WITH_VFP,y,required by CFG_CRYPTO_SHA1_ARM_CE)
104endif
105ifeq ($(CFG_CRYPTO_AES_ARM_CE),y)
106$(call force,CFG_WITH_VFP,y,required by CFG_CRYPTO_AES_ARM_CE)
107endif
108
109cryp-enable-all-depends = $(call cfg-enable-all-depends,$(strip $(1)),$(foreach v,$(2),CFG_CRYPTO_$(v)))
110$(eval $(call cryp-enable-all-depends,CFG_REE_FS, AES ECB CTR HMAC SHA256 GCM))
111$(eval $(call cryp-enable-all-depends,CFG_RPMB_FS, AES ECB CTR HMAC SHA256 GCM))
112
113# Dependency checks: warn and disable some features if dependencies are not met
114
115cryp-dep-one = $(call cfg-depends-one,CFG_CRYPTO_$(strip $(1)),$(patsubst %, CFG_CRYPTO_%,$(strip $(2))))
116cryp-dep-all = $(call cfg-depends-all,CFG_CRYPTO_$(strip $(1)),$(patsubst %, CFG_CRYPTO_%,$(strip $(2))))
117
118$(eval $(call cryp-dep-one, ECB, AES DES))
119$(eval $(call cryp-dep-one, CBC, AES DES))
120$(eval $(call cryp-dep-one, CTR, AES))
121# CTS is implemented with ECB and CBC
122$(eval $(call cryp-dep-all, CTS, AES ECB CBC))
123$(eval $(call cryp-dep-one, XTS, AES))
124$(eval $(call cryp-dep-one, HMAC, AES DES))
125$(eval $(call cryp-dep-one, HMAC, MD5 SHA1 SHA224 SHA256 SHA384 SHA512))
126$(eval $(call cryp-dep-one, CMAC, AES))
127$(eval $(call cryp-dep-one, CBC_MAC, AES DES))
128$(eval $(call cryp-dep-one, CCM, AES))
129$(eval $(call cryp-dep-one, GCM, AES))
130# If no AES cipher mode is left, disable AES
131$(eval $(call cryp-dep-one, AES, ECB CBC CTR CTS XTS))
132# If no DES cipher mode is left, disable DES
133$(eval $(call cryp-dep-one, DES, ECB CBC))
134# SM2 is Elliptic Curve Cryptography, it uses some generic ECC functions
135$(eval $(call cryp-dep-one, SM2_PKE, ECC))
136$(eval $(call cryp-dep-one, SM2_DSA, ECC))
137$(eval $(call cryp-dep-one, SM2_KEP, ECC))
138
139###############################################################
140# libtomcrypt (LTC) specifics, phase #1
141# LTC is only configured via _CFG_CORE_LTC_ prefixed variables
142#
143# _CFG_CORE_LTC_xxx_DESC means that LTC will only register the
144# descriptor of the algorithm, not provide a
145# crypt_xxx_alloc_ctx() function.
146###############################################################
147
148# If LTC is the cryptolib, pull configuration from CFG_CRYPTO_xxx
149ifeq ($(CFG_CRYPTOLIB_NAME),tomcrypt)
150# dsa_make_params() needs all three SHA-2 algorithms.
151# Disable DSA if any is missing.
152$(eval $(call cryp-dep-all, DSA, SHA256 SHA384 SHA512))
153
154# Assign _CFG_CORE_LTC_xxx based on CFG_CRYPTO_yyy
155core-ltc-vars = AES DES
156core-ltc-vars += ECB CBC CTR CTS XTS
157core-ltc-vars += MD5 SHA1 SHA224 SHA256 SHA384 SHA512 SHA512_256
158core-ltc-vars += HMAC CMAC CBC_MAC
159core-ltc-vars += CCM
160ifeq ($(CFG_CRYPTO_AES_GCM_FROM_CRYPTOLIB),y)
161core-ltc-vars += GCM
162endif
163core-ltc-vars += RSA DSA DH ECC
164core-ltc-vars += SIZE_OPTIMIZATION
165core-ltc-vars += SM2_PKE
166core-ltc-vars += SM2_DSA
167core-ltc-vars += SM2_KEP
168core-ltc-vars += ED25519 X25519
169# Assigned selected CFG_CRYPTO_xxx as _CFG_CORE_LTC_xxx
170$(foreach v, $(core-ltc-vars), $(eval _CFG_CORE_LTC_$(v) := $(CFG_CRYPTO_$(v))))
171_CFG_CORE_LTC_MPI := $(CFG_CORE_MBEDTLS_MPI)
172_CFG_CORE_LTC_AES_ACCEL := $(CFG_CORE_CRYPTO_AES_ACCEL)
173_CFG_CORE_LTC_SHA1_ACCEL := $(CFG_CORE_CRYPTO_SHA1_ACCEL)
174_CFG_CORE_LTC_SHA256_ACCEL := $(CFG_CORE_CRYPTO_SHA256_ACCEL)
175endif
176
177###############################################################
178# mbedtls specifics
179###############################################################
180
181ifeq ($(CFG_CRYPTOLIB_NAME),mbedtls)
182# mbedtls has to be complemented with some algorithms by LTC
183# Specify the algorithms here
184_CFG_CORE_LTC_DSA := $(CFG_CRYPTO_DSA)
185_CFG_CORE_LTC_MPI := $(CFG_CRYPTO_DSA)
186_CFG_CORE_LTC_SHA256_DESC := $(CFG_CRYPTO_DSA)
187_CFG_CORE_LTC_SHA384_DESC := $(CFG_CRYPTO_DSA)
188_CFG_CORE_LTC_SHA512_DESC := $(CFG_CRYPTO_DSA)
189_CFG_CORE_LTC_XTS := $(CFG_CRYPTO_XTS)
190_CFG_CORE_LTC_CCM := $(CFG_CRYPTO_CCM)
191_CFG_CORE_LTC_AES_DESC := $(call cfg-one-enabled, CFG_CRYPTO_XTS CFG_CRYPTO_CCM)
192_CFG_CORE_LTC_X25519 := $(CFG_CRYPTO_X25519)
193_CFG_CORE_LTC_ED25519 := $(CFG_CRYPTO_ED25519)
194endif
195
196###############################################################
197# libtomcrypt (LTC) specifics, phase #2
198###############################################################
199
200_CFG_CORE_LTC_SHA256_DESC := $(call cfg-one-enabled, _CFG_CORE_LTC_SHA256_DESC \
201						     _CFG_CORE_LTC_SHA224 \
202						     _CFG_CORE_LTC_SHA256)
203_CFG_CORE_LTC_SHA384_DESC := $(call cfg-one-enabled, _CFG_CORE_LTC_SHA384_DESC \
204						     _CFG_CORE_LTC_SHA384)
205_CFG_CORE_LTC_SHA512_DESC := $(call cfg-one-enabled, _CFG_CORE_LTC_SHA512_DESC \
206						     _CFG_CORE_LTC_SHA512_256 \
207						     _CFG_CORE_LTC_SHA512)
208_CFG_CORE_LTC_AES_DESC := $(call cfg-one-enabled, _CFG_CORE_LTC_AES_DESC \
209						  _CFG_CORE_LTC_AES)
210
211# Assign system variables
212_CFG_CORE_LTC_CE := $(CFG_CRYPTO_WITH_CE)
213_CFG_CORE_LTC_VFP := $(CFG_WITH_VFP)
214_CFG_CORE_LTC_BIGNUM_MAX_BITS := $(CFG_CORE_BIGNUM_MAX_BITS)
215_CFG_CORE_LTC_PAGER := $(CFG_WITH_PAGER)
216ifneq ($(CFG_NUM_THREADS),1)
217_CFG_CORE_LTC_OPTEE_THREAD := y
218else
219_CFG_CORE_LTC_OPTEE_THREAD := n
220endif
221_CFG_CORE_LTC_HWSUPP_PMULL := $(CFG_HWSUPP_PMULL)
222
223# Assign aggregated variables
224ltc-one-enabled = $(call cfg-one-enabled,$(foreach v,$(1),_CFG_CORE_LTC_$(v)))
225_CFG_CORE_LTC_ACIPHER := $(call ltc-one-enabled, RSA DSA DH ECC)
226_CFG_CORE_LTC_AUTHENC := $(and $(filter y,$(_CFG_CORE_LTC_AES_DESC)), \
227			       $(filter y,$(call ltc-one-enabled, CCM GCM)))
228_CFG_CORE_LTC_CIPHER := $(call ltc-one-enabled, AES_DESC DES)
229_CFG_CORE_LTC_HASH := $(call ltc-one-enabled, MD5 SHA1 SHA224 SHA256 SHA384 \
230					      SHA512)
231_CFG_CORE_LTC_MAC := $(call ltc-one-enabled, HMAC CMAC CBC_MAC)
232_CFG_CORE_LTC_CBC := $(call ltc-one-enabled, CBC CBC_MAC)
233_CFG_CORE_LTC_ASN1 := $(call ltc-one-enabled, RSA DSA ECC)
234_CFG_CORE_LTC_EC25519 := $(call ltc-one-enabled, ED25519 X25519)
235
236###############################################################
237# Platform independent crypto-driver configuration
238###############################################################
239CRYPTO_MAKEFILES := $(sort $(wildcard core/drivers/crypto/*/crypto.mk))
240include $(CRYPTO_MAKEFILES)
241
242# Enable TEE_ALG_RSASSA_PKCS1_V1_5 algorithm for signing with PKCS#1 v1.5 EMSA
243# without ASN.1 around the hash.
244ifeq ($(CFG_CRYPTOLIB_NAME),tomcrypt)
245CFG_CRYPTO_RSASSA_NA1 ?= y
246endif
247