xref: /optee_os/core/crypto.mk (revision 0f1519439f5bff0608f4a24baaaed108a0d0be5c) 
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_OPTIMIZE_FOR_SIZE
5CFG_CRYPTO_SIZE_OPTIMIZATION ?= y
6
7ifeq (y,$(CFG_CRYPTO))
8
9# Ciphers
10CFG_CRYPTO_AES ?= y
11CFG_CRYPTO_DES ?= y
12CFG_CRYPTO_SM4 ?= y
13
14# Cipher block modes
15CFG_CRYPTO_ECB ?= y
16CFG_CRYPTO_CBC ?= y
17CFG_CRYPTO_CTR ?= y
18CFG_CRYPTO_CTS ?= y
19CFG_CRYPTO_XTS ?= y
20
21# Message authentication codes
22CFG_CRYPTO_HMAC ?= y
23CFG_CRYPTO_CMAC ?= y
24CFG_CRYPTO_CBC_MAC ?= y
25
26# Hashes
27CFG_CRYPTO_MD5 ?= y
28CFG_CRYPTO_SHA1 ?= y
29CFG_CRYPTO_SHA224 ?= y
30CFG_CRYPTO_SHA256 ?= y
31CFG_CRYPTO_SHA384 ?= y
32CFG_CRYPTO_SHA512 ?= y
33CFG_CRYPTO_SHA512_256 ?= y
34CFG_CRYPTO_SM3 ?= y
35
36# Asymmetric ciphers
37CFG_CRYPTO_DSA ?= y
38CFG_CRYPTO_RSA ?= y
39CFG_CRYPTO_DH ?= y
40# ECC includes ECDSA and ECDH
41CFG_CRYPTO_ECC ?= y
42ifeq ($(CFG_CRYPTOLIB_NAME),tomcrypt)
43CFG_CRYPTO_SM2_PKE ?= y
44CFG_CRYPTO_SM2_DSA ?= y
45endif
46ifeq ($(CFG_CRYPTOLIB_NAME)-$(CFG_CRYPTO_SM2_PKE),mbedtls-y)
47$(error Error: CFG_CRYPTO_SM2_PKE=y requires CFG_CRYPTOLIB_NAME=tomcrypt)
48endif
49ifeq ($(CFG_CRYPTOLIB_NAME)-$(CFG_CRYPTO_SM2_DSA),mbedtls-y)
50$(error Error: CFG_CRYPTO_SM2_DSA=y requires CFG_CRYPTOLIB_NAME=tomcrypt)
51endif
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$(call force,CFG_AES_GCM_TABLE_BASED,n,conflicts with CFG_CRYPTO_WITH_CE)
73
74# CFG_HWSUPP_PMULT_64 defines whether the CPU supports polynomial multiplies
75# of 64-bit values (Aarch64: PMULL/PMULL2 with the 1Q specifier; Aarch32:
76# VMULL.P64). These operations are part of the Cryptographic Extensions, so
77# assume they are implicitly contained in CFG_CRYPTO_WITH_CE=y.
78CFG_HWSUPP_PMULT_64 ?= y
79
80ifeq ($(CFG_ARM32_core),y)
81CFG_CRYPTO_AES_ARM32_CE ?= $(CFG_CRYPTO_AES)
82CFG_CRYPTO_SHA1_ARM32_CE ?= $(CFG_CRYPTO_SHA1)
83CFG_CRYPTO_SHA256_ARM32_CE ?= $(CFG_CRYPTO_SHA256)
84endif
85
86ifeq ($(CFG_ARM64_core),y)
87CFG_CRYPTO_AES_ARM64_CE ?= $(CFG_CRYPTO_AES)
88CFG_CRYPTO_SHA1_ARM64_CE ?= $(CFG_CRYPTO_SHA1)
89CFG_CRYPTO_SHA256_ARM64_CE ?= $(CFG_CRYPTO_SHA256)
90endif
91
92else #CFG_CRYPTO_WITH_CE
93
94CFG_AES_GCM_TABLE_BASED ?= y
95
96endif #!CFG_CRYPTO_WITH_CE
97
98
99# Cryptographic extensions can only be used safely when OP-TEE knows how to
100# preserve the VFP context
101ifeq ($(CFG_CRYPTO_SHA256_ARM32_CE),y)
102$(call force,CFG_WITH_VFP,y,required by CFG_CRYPTO_SHA256_ARM32_CE)
103endif
104ifeq ($(CFG_CRYPTO_SHA256_ARM64_CE),y)
105$(call force,CFG_WITH_VFP,y,required by CFG_CRYPTO_SHA256_ARM64_CE)
106endif
107ifeq ($(CFG_CRYPTO_SHA1_ARM32_CE),y)
108$(call force,CFG_WITH_VFP,y,required by CFG_CRYPTO_SHA1_ARM32_CE)
109endif
110ifeq ($(CFG_CRYPTO_SHA1_ARM64_CE),y)
111$(call force,CFG_WITH_VFP,y,required by CFG_CRYPTO_SHA1_ARM64_CE)
112endif
113ifeq ($(CFG_CRYPTO_AES_ARM64_CE),y)
114$(call force,CFG_WITH_VFP,y,required by CFG_CRYPTO_AES_ARM64_CE)
115endif
116
117cryp-enable-all-depends = $(call cfg-enable-all-depends,$(strip $(1)),$(foreach v,$(2),CFG_CRYPTO_$(v)))
118$(eval $(call cryp-enable-all-depends,CFG_REE_FS, AES ECB CTR HMAC SHA256 GCM))
119$(eval $(call cryp-enable-all-depends,CFG_RPMB_FS, AES ECB CTR HMAC SHA256 GCM))
120
121# Dependency checks: warn and disable some features if dependencies are not met
122
123cryp-dep-one = $(call cfg-depends-one,CFG_CRYPTO_$(strip $(1)),$(patsubst %, CFG_CRYPTO_%,$(strip $(2))))
124cryp-dep-all = $(call cfg-depends-all,CFG_CRYPTO_$(strip $(1)),$(patsubst %, CFG_CRYPTO_%,$(strip $(2))))
125
126$(eval $(call cryp-dep-one, ECB, AES DES))
127$(eval $(call cryp-dep-one, CBC, AES DES))
128$(eval $(call cryp-dep-one, CTR, AES))
129# CTS is implemented with ECB and CBC
130$(eval $(call cryp-dep-all, CTS, AES ECB CBC))
131$(eval $(call cryp-dep-one, XTS, AES))
132$(eval $(call cryp-dep-one, HMAC, AES DES))
133$(eval $(call cryp-dep-one, HMAC, MD5 SHA1 SHA224 SHA256 SHA384 SHA512))
134$(eval $(call cryp-dep-one, CMAC, AES))
135$(eval $(call cryp-dep-one, CBC_MAC, AES DES))
136$(eval $(call cryp-dep-one, CCM, AES))
137$(eval $(call cryp-dep-one, GCM, AES))
138# If no AES cipher mode is left, disable AES
139$(eval $(call cryp-dep-one, AES, ECB CBC CTR CTS XTS))
140# If no DES cipher mode is left, disable DES
141$(eval $(call cryp-dep-one, DES, ECB CBC))
142# SM2 is Elliptic Curve Cryptography, it uses some generic ECC functions
143$(eval $(call cryp-dep-one, SM2_PKE, ECC))
144$(eval $(call cryp-dep-one, SM2_DSA, ECC))
145
146###############################################################
147# libtomcrypt (LTC) specifics, phase #1
148# LTC is only configured via _CFG_CORE_LTC_ prefixed variables
149#
150# _CFG_CORE_LTC_xxx_DESC means that LTC will only register the
151# descriptor of the algorithm, not provide a
152# crypt_xxx_alloc_ctx() function.
153###############################################################
154
155# If LTC is the cryptolib, pull configuration from CFG_CRYPTO_xxx
156ifeq ($(CFG_CRYPTOLIB_NAME),tomcrypt)
157# dsa_make_params() needs all three SHA-2 algorithms.
158# Disable DSA if any is missing.
159$(eval $(call cryp-dep-all, DSA, SHA256 SHA384 SHA512))
160
161# Assign _CFG_CORE_LTC_xxx based on CFG_CRYPTO_yyy
162core-ltc-vars = AES DES
163core-ltc-vars += ECB CBC CTR CTS XTS
164core-ltc-vars += MD5 SHA1 SHA224 SHA256 SHA384 SHA512 SHA512_256
165core-ltc-vars += HMAC CMAC CBC_MAC
166core-ltc-vars += CCM
167ifeq ($(CFG_CRYPTO_AES_GCM_FROM_CRYPTOLIB),y)
168core-ltc-vars += GCM
169endif
170core-ltc-vars += RSA DSA DH ECC
171core-ltc-vars += AES_ARM64_CE AES_ARM32_CE
172core-ltc-vars += SHA1_ARM32_CE SHA1_ARM64_CE
173core-ltc-vars += SHA256_ARM32_CE SHA256_ARM64_CE
174core-ltc-vars += SIZE_OPTIMIZATION
175core-ltc-vars += SM2_PKE
176core-ltc-vars += SM2_DSA
177# Assigned selected CFG_CRYPTO_xxx as _CFG_CORE_LTC_xxx
178$(foreach v, $(core-ltc-vars), $(eval _CFG_CORE_LTC_$(v) := $(CFG_CRYPTO_$(v))))
179_CFG_CORE_LTC_MPI := $(CFG_CORE_MBEDTLS_MPI)
180endif
181
182###############################################################
183# mbedtls specifics
184###############################################################
185
186ifeq ($(CFG_CRYPTOLIB_NAME),mbedtls)
187# mbedtls has to be complemented with some algorithms by LTC
188# Specify the algorithms here
189_CFG_CORE_LTC_DSA := $(CFG_CRYPTO_DSA)
190_CFG_CORE_LTC_MPI := $(CFG_CRYPTO_DSA)
191_CFG_CORE_LTC_SHA256_DESC := $(CFG_CRYPTO_DSA)
192_CFG_CORE_LTC_SHA384_DESC := $(CFG_CRYPTO_DSA)
193_CFG_CORE_LTC_SHA512_DESC := $(CFG_CRYPTO_DSA)
194_CFG_CORE_LTC_XTS := $(CFG_CRYPTO_XTS)
195_CFG_CORE_LTC_CCM := $(CFG_CRYPTO_CCM)
196_CFG_CORE_LTC_AES_DESC := $(call cfg-one-enabled, CFG_CRYPTO_XTS CFG_CRYPTO_CCM)
197endif
198
199###############################################################
200# libtomcrypt (LTC) specifics, phase #2
201###############################################################
202
203# Assign system variables
204_CFG_CORE_LTC_CE := $(CFG_CRYPTO_WITH_CE)
205_CFG_CORE_LTC_VFP := $(CFG_WITH_VFP)
206_CFG_CORE_LTC_BIGNUM_MAX_BITS := $(CFG_CORE_BIGNUM_MAX_BITS)
207_CFG_CORE_LTC_PAGER := $(CFG_WITH_PAGER)
208_CFG_CORE_LTC_OPTEE_THREAD := $(CFG_LTC_OPTEE_THREAD)
209_CFG_CORE_LTC_HWSUPP_PMULL := $(CFG_HWSUPP_PMULL)
210
211# Assign aggregated variables
212ltc-one-enabled = $(call cfg-one-enabled,$(foreach v,$(1),_CFG_CORE_LTC_$(v)))
213_CFG_CORE_LTC_ACIPHER := $(call ltc-one-enabled, RSA DSA DH ECC)
214_CFG_CORE_LTC_AUTHENC := $(and $(filter y,$(_CFG_CORE_LTC_AES) \
215					  $(_CFG_CORE_LTC_AES_DESC)), \
216			       $(filter y,$(call ltc-one-enabled, CCM GCM)))
217_CFG_CORE_LTC_CIPHER := $(call ltc-one-enabled, AES AES_DESC DES)
218_CFG_CORE_LTC_HASH := $(call ltc-one-enabled, MD5 SHA1 SHA224 SHA256 SHA384 \
219					      SHA512)
220_CFG_CORE_LTC_MAC := $(call ltc-one-enabled, HMAC CMAC CBC_MAC)
221_CFG_CORE_LTC_CBC := $(call ltc-one-enabled, CBC CBC_MAC)
222_CFG_CORE_LTC_ASN1 := $(call ltc-one-enabled, RSA DSA ECC)
223