xref: /optee_os/core/crypto.mk (revision 858d5279e498c695f6b2d2ca2e9e0ed97d3d533b) 
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
45CFG_CRYPTO_SM2_KEP ?= y
46endif
47ifeq ($(CFG_CRYPTOLIB_NAME)-$(CFG_CRYPTO_SM2_PKE),mbedtls-y)
48$(error Error: CFG_CRYPTO_SM2_PKE=y requires CFG_CRYPTOLIB_NAME=tomcrypt)
49endif
50ifeq ($(CFG_CRYPTOLIB_NAME)-$(CFG_CRYPTO_SM2_DSA),mbedtls-y)
51$(error Error: CFG_CRYPTO_SM2_DSA=y requires CFG_CRYPTOLIB_NAME=tomcrypt)
52endif
53ifeq ($(CFG_CRYPTOLIB_NAME)-$(CFG_CRYPTO_SM2_KEP),mbedtls-y)
54$(error Error: CFG_CRYPTO_SM2_KEP=y requires CFG_CRYPTOLIB_NAME=tomcrypt)
55endif
56
57# Authenticated encryption
58CFG_CRYPTO_CCM ?= y
59CFG_CRYPTO_GCM ?= y
60# Default uses the OP-TEE internal AES-GCM implementation
61CFG_CRYPTO_AES_GCM_FROM_CRYPTOLIB ?= n
62
63endif
64
65ifeq ($(CFG_WITH_PAGER),y)
66ifneq ($(CFG_CRYPTO_SHA256),y)
67$(warning Warning: Enabling CFG_CRYPTO_SHA256 [required by CFG_WITH_PAGER])
68CFG_CRYPTO_SHA256:=y
69endif
70endif
71
72$(eval $(call cryp-enable-all-depends,CFG_WITH_SOFTWARE_PRNG, AES ECB SHA256))
73
74ifeq ($(CFG_CRYPTO_WITH_CE),y)
75
76$(call force,CFG_AES_GCM_TABLE_BASED,n,conflicts with CFG_CRYPTO_WITH_CE)
77
78# CFG_HWSUPP_PMULT_64 defines whether the CPU supports polynomial multiplies
79# of 64-bit values (Aarch64: PMULL/PMULL2 with the 1Q specifier; Aarch32:
80# VMULL.P64). These operations are part of the Cryptographic Extensions, so
81# assume they are implicitly contained in CFG_CRYPTO_WITH_CE=y.
82CFG_HWSUPP_PMULT_64 ?= y
83
84ifeq ($(CFG_ARM32_core),y)
85CFG_CRYPTO_SHA256_ARM32_CE ?= $(CFG_CRYPTO_SHA256)
86endif
87
88ifeq ($(CFG_ARM64_core),y)
89CFG_CRYPTO_SHA256_ARM64_CE ?= $(CFG_CRYPTO_SHA256)
90endif
91
92CFG_CRYPTO_SHA1_ARM_CE ?= $(CFG_CRYPTO_SHA1)
93CFG_CORE_CRYPTO_SHA1_ACCEL ?= $(CFG_CRYPTO_SHA1_ARM_CE)
94CFG_CRYPTO_AES_ARM_CE ?= $(CFG_CRYPTO_AES)
95CFG_CORE_CRYPTO_AES_ACCEL ?= $(CFG_CRYPTO_AES_ARM_CE)
96
97else #CFG_CRYPTO_WITH_CE
98
99CFG_AES_GCM_TABLE_BASED ?= y
100
101endif #!CFG_CRYPTO_WITH_CE
102
103
104# Cryptographic extensions can only be used safely when OP-TEE knows how to
105# preserve the VFP context
106ifeq ($(CFG_CRYPTO_SHA256_ARM32_CE),y)
107$(call force,CFG_WITH_VFP,y,required by CFG_CRYPTO_SHA256_ARM32_CE)
108endif
109ifeq ($(CFG_CRYPTO_SHA256_ARM64_CE),y)
110$(call force,CFG_WITH_VFP,y,required by CFG_CRYPTO_SHA256_ARM64_CE)
111endif
112ifeq ($(CFG_CRYPTO_SHA1_ARM_CE),y)
113$(call force,CFG_WITH_VFP,y,required by CFG_CRYPTO_SHA1_ARM_CE)
114endif
115ifeq ($(CFG_CRYPTO_AES_ARM_CE),y)
116$(call force,CFG_WITH_VFP,y,required by CFG_CRYPTO_AES_ARM_CE)
117endif
118
119cryp-enable-all-depends = $(call cfg-enable-all-depends,$(strip $(1)),$(foreach v,$(2),CFG_CRYPTO_$(v)))
120$(eval $(call cryp-enable-all-depends,CFG_REE_FS, AES ECB CTR HMAC SHA256 GCM))
121$(eval $(call cryp-enable-all-depends,CFG_RPMB_FS, AES ECB CTR HMAC SHA256 GCM))
122
123# Dependency checks: warn and disable some features if dependencies are not met
124
125cryp-dep-one = $(call cfg-depends-one,CFG_CRYPTO_$(strip $(1)),$(patsubst %, CFG_CRYPTO_%,$(strip $(2))))
126cryp-dep-all = $(call cfg-depends-all,CFG_CRYPTO_$(strip $(1)),$(patsubst %, CFG_CRYPTO_%,$(strip $(2))))
127
128$(eval $(call cryp-dep-one, ECB, AES DES))
129$(eval $(call cryp-dep-one, CBC, AES DES))
130$(eval $(call cryp-dep-one, CTR, AES))
131# CTS is implemented with ECB and CBC
132$(eval $(call cryp-dep-all, CTS, AES ECB CBC))
133$(eval $(call cryp-dep-one, XTS, AES))
134$(eval $(call cryp-dep-one, HMAC, AES DES))
135$(eval $(call cryp-dep-one, HMAC, MD5 SHA1 SHA224 SHA256 SHA384 SHA512))
136$(eval $(call cryp-dep-one, CMAC, AES))
137$(eval $(call cryp-dep-one, CBC_MAC, AES DES))
138$(eval $(call cryp-dep-one, CCM, AES))
139$(eval $(call cryp-dep-one, GCM, AES))
140# If no AES cipher mode is left, disable AES
141$(eval $(call cryp-dep-one, AES, ECB CBC CTR CTS XTS))
142# If no DES cipher mode is left, disable DES
143$(eval $(call cryp-dep-one, DES, ECB CBC))
144# SM2 is Elliptic Curve Cryptography, it uses some generic ECC functions
145$(eval $(call cryp-dep-one, SM2_PKE, ECC))
146$(eval $(call cryp-dep-one, SM2_DSA, ECC))
147$(eval $(call cryp-dep-one, SM2_KEP, ECC))
148
149###############################################################
150# libtomcrypt (LTC) specifics, phase #1
151# LTC is only configured via _CFG_CORE_LTC_ prefixed variables
152#
153# _CFG_CORE_LTC_xxx_DESC means that LTC will only register the
154# descriptor of the algorithm, not provide a
155# crypt_xxx_alloc_ctx() function.
156###############################################################
157
158# If LTC is the cryptolib, pull configuration from CFG_CRYPTO_xxx
159ifeq ($(CFG_CRYPTOLIB_NAME),tomcrypt)
160# dsa_make_params() needs all three SHA-2 algorithms.
161# Disable DSA if any is missing.
162$(eval $(call cryp-dep-all, DSA, SHA256 SHA384 SHA512))
163
164# Assign _CFG_CORE_LTC_xxx based on CFG_CRYPTO_yyy
165core-ltc-vars = AES DES
166core-ltc-vars += ECB CBC CTR CTS XTS
167core-ltc-vars += MD5 SHA1 SHA224 SHA256 SHA384 SHA512 SHA512_256
168core-ltc-vars += HMAC CMAC CBC_MAC
169core-ltc-vars += CCM
170ifeq ($(CFG_CRYPTO_AES_GCM_FROM_CRYPTOLIB),y)
171core-ltc-vars += GCM
172endif
173core-ltc-vars += RSA DSA DH ECC
174core-ltc-vars += SIZE_OPTIMIZATION
175core-ltc-vars += SM2_PKE
176core-ltc-vars += SM2_DSA
177core-ltc-vars += SM2_KEP
178# Assigned selected CFG_CRYPTO_xxx as _CFG_CORE_LTC_xxx
179$(foreach v, $(core-ltc-vars), $(eval _CFG_CORE_LTC_$(v) := $(CFG_CRYPTO_$(v))))
180_CFG_CORE_LTC_MPI := $(CFG_CORE_MBEDTLS_MPI)
181endif
182
183###############################################################
184# mbedtls specifics
185###############################################################
186
187ifeq ($(CFG_CRYPTOLIB_NAME),mbedtls)
188# mbedtls has to be complemented with some algorithms by LTC
189# Specify the algorithms here
190_CFG_CORE_LTC_DSA := $(CFG_CRYPTO_DSA)
191_CFG_CORE_LTC_MPI := $(CFG_CRYPTO_DSA)
192_CFG_CORE_LTC_SHA256_DESC := $(CFG_CRYPTO_DSA)
193_CFG_CORE_LTC_SHA384_DESC := $(CFG_CRYPTO_DSA)
194_CFG_CORE_LTC_SHA512_DESC := $(CFG_CRYPTO_DSA)
195_CFG_CORE_LTC_XTS := $(CFG_CRYPTO_XTS)
196_CFG_CORE_LTC_CCM := $(CFG_CRYPTO_CCM)
197_CFG_CORE_LTC_AES_DESC := $(call cfg-one-enabled, CFG_CRYPTO_XTS CFG_CRYPTO_CCM)
198endif
199
200###############################################################
201# libtomcrypt (LTC) specifics, phase #2
202###############################################################
203
204_CFG_CORE_LTC_SHA256_DESC := $(call cfg-one-enabled, _CFG_CORE_LTC_SHA256_DESC \
205						     _CFG_CORE_LTC_SHA224 \
206						     _CFG_CORE_LTC_SHA256)
207_CFG_CORE_LTC_SHA384_DESC := $(call cfg-one-enabled, _CFG_CORE_LTC_SHA384_DESC \
208						     _CFG_CORE_LTC_SHA384)
209_CFG_CORE_LTC_SHA512_DESC := $(call cfg-one-enabled, _CFG_CORE_LTC_SHA512_DESC \
210						     _CFG_CORE_LTC_SHA512_256 \
211						     _CFG_CORE_LTC_SHA512)
212_CFG_CORE_LTC_AES_DESC := $(call cfg-one-enabled, _CFG_CORE_LTC_AES_DESC \
213						  _CFG_CORE_LTC_AES)
214
215# Assign system variables
216_CFG_CORE_LTC_CE := $(CFG_CRYPTO_WITH_CE)
217_CFG_CORE_LTC_VFP := $(CFG_WITH_VFP)
218_CFG_CORE_LTC_BIGNUM_MAX_BITS := $(CFG_CORE_BIGNUM_MAX_BITS)
219_CFG_CORE_LTC_PAGER := $(CFG_WITH_PAGER)
220_CFG_CORE_LTC_OPTEE_THREAD := $(CFG_LTC_OPTEE_THREAD)
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