xref: /optee_os/core/crypto.mk (revision f6e2b9e2d1a270542c6f6f5e36ed4e36abe18256) 
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,$(CFG_CRYPTO))
8
9# Ciphers
10CFG_CRYPTO_AES ?= y
11CFG_CRYPTO_DES ?= y
12CFG_CRYPTO_SM4 ?= y
13
14# Cipher block modes
15CFG_CRYPTO_ECB ?= y
16CFG_CRYPTO_CBC ?= y
17CFG_CRYPTO_CTR ?= y
18CFG_CRYPTO_CTS ?= y
19CFG_CRYPTO_XTS ?= y
20
21# Message authentication codes
22CFG_CRYPTO_HMAC ?= y
23CFG_CRYPTO_CMAC ?= y
24CFG_CRYPTO_CBC_MAC ?= y
25
26# Hashes
27CFG_CRYPTO_MD5 ?= y
28CFG_CRYPTO_SHA1 ?= y
29CFG_CRYPTO_SHA224 ?= y
30CFG_CRYPTO_SHA256 ?= y
31CFG_CRYPTO_SHA384 ?= y
32CFG_CRYPTO_SHA512 ?= y
33CFG_CRYPTO_SHA512_256 ?= y
34CFG_CRYPTO_SM3 ?= y
35
36# Asymmetric ciphers
37CFG_CRYPTO_DSA ?= y
38CFG_CRYPTO_RSA ?= y
39CFG_CRYPTO_DH ?= y
40# ECC includes ECDSA and ECDH
41CFG_CRYPTO_ECC ?= y
42CFG_CRYPTO_SM2_PKE ?= y
43CFG_CRYPTO_SM2_DSA ?= y
44CFG_CRYPTO_SM2_KEP ?= y
45
46# Authenticated encryption
47CFG_CRYPTO_CCM ?= y
48CFG_CRYPTO_GCM ?= y
49# Default uses the OP-TEE internal AES-GCM implementation
50CFG_CRYPTO_AES_GCM_FROM_CRYPTOLIB ?= n
51
52endif
53
54ifeq ($(CFG_WITH_PAGER),y)
55ifneq ($(CFG_CRYPTO_SHA256),y)
56$(warning Warning: Enabling CFG_CRYPTO_SHA256 [required by CFG_WITH_PAGER])
57CFG_CRYPTO_SHA256:=y
58endif
59endif
60
61$(eval $(call cryp-enable-all-depends,CFG_WITH_SOFTWARE_PRNG, AES ECB SHA256))
62
63ifeq ($(CFG_CRYPTO_WITH_CE),y)
64
65$(call force,CFG_AES_GCM_TABLE_BASED,n,conflicts with CFG_CRYPTO_WITH_CE)
66
67# CFG_HWSUPP_PMULT_64 defines whether the CPU supports polynomial multiplies
68# of 64-bit values (Aarch64: PMULL/PMULL2 with the 1Q specifier; Aarch32:
69# VMULL.P64). These operations are part of the Cryptographic Extensions, so
70# assume they are implicitly contained in CFG_CRYPTO_WITH_CE=y.
71CFG_HWSUPP_PMULT_64 ?= y
72
73CFG_CRYPTO_SHA256_ARM_CE ?= $(CFG_CRYPTO_SHA256)
74CFG_CORE_CRYPTO_SHA256_ACCEL ?= $(CFG_CRYPTO_SHA256_ARM_CE)
75CFG_CRYPTO_SHA1_ARM_CE ?= $(CFG_CRYPTO_SHA1)
76CFG_CORE_CRYPTO_SHA1_ACCEL ?= $(CFG_CRYPTO_SHA1_ARM_CE)
77CFG_CRYPTO_AES_ARM_CE ?= $(CFG_CRYPTO_AES)
78CFG_CORE_CRYPTO_AES_ACCEL ?= $(CFG_CRYPTO_AES_ARM_CE)
79
80else #CFG_CRYPTO_WITH_CE
81
82CFG_AES_GCM_TABLE_BASED ?= y
83
84endif #!CFG_CRYPTO_WITH_CE
85
86
87# Cryptographic extensions can only be used safely when OP-TEE knows how to
88# preserve the VFP context
89ifeq ($(CFG_CRYPTO_SHA256_ARM32_CE),y)
90$(call force,CFG_WITH_VFP,y,required by CFG_CRYPTO_SHA256_ARM32_CE)
91endif
92ifeq ($(CFG_CRYPTO_SHA256_ARM64_CE),y)
93$(call force,CFG_WITH_VFP,y,required by CFG_CRYPTO_SHA256_ARM64_CE)
94endif
95ifeq ($(CFG_CRYPTO_SHA1_ARM_CE),y)
96$(call force,CFG_WITH_VFP,y,required by CFG_CRYPTO_SHA1_ARM_CE)
97endif
98ifeq ($(CFG_CRYPTO_AES_ARM_CE),y)
99$(call force,CFG_WITH_VFP,y,required by CFG_CRYPTO_AES_ARM_CE)
100endif
101
102cryp-enable-all-depends = $(call cfg-enable-all-depends,$(strip $(1)),$(foreach v,$(2),CFG_CRYPTO_$(v)))
103$(eval $(call cryp-enable-all-depends,CFG_REE_FS, AES ECB CTR HMAC SHA256 GCM))
104$(eval $(call cryp-enable-all-depends,CFG_RPMB_FS, AES ECB CTR HMAC SHA256 GCM))
105
106# Dependency checks: warn and disable some features if dependencies are not met
107
108cryp-dep-one = $(call cfg-depends-one,CFG_CRYPTO_$(strip $(1)),$(patsubst %, CFG_CRYPTO_%,$(strip $(2))))
109cryp-dep-all = $(call cfg-depends-all,CFG_CRYPTO_$(strip $(1)),$(patsubst %, CFG_CRYPTO_%,$(strip $(2))))
110
111$(eval $(call cryp-dep-one, ECB, AES DES))
112$(eval $(call cryp-dep-one, CBC, AES DES))
113$(eval $(call cryp-dep-one, CTR, AES))
114# CTS is implemented with ECB and CBC
115$(eval $(call cryp-dep-all, CTS, AES ECB CBC))
116$(eval $(call cryp-dep-one, XTS, AES))
117$(eval $(call cryp-dep-one, HMAC, AES DES))
118$(eval $(call cryp-dep-one, HMAC, MD5 SHA1 SHA224 SHA256 SHA384 SHA512))
119$(eval $(call cryp-dep-one, CMAC, AES))
120$(eval $(call cryp-dep-one, CBC_MAC, AES DES))
121$(eval $(call cryp-dep-one, CCM, AES))
122$(eval $(call cryp-dep-one, GCM, AES))
123# If no AES cipher mode is left, disable AES
124$(eval $(call cryp-dep-one, AES, ECB CBC CTR CTS XTS))
125# If no DES cipher mode is left, disable DES
126$(eval $(call cryp-dep-one, DES, ECB CBC))
127# SM2 is Elliptic Curve Cryptography, it uses some generic ECC functions
128$(eval $(call cryp-dep-one, SM2_PKE, ECC))
129$(eval $(call cryp-dep-one, SM2_DSA, ECC))
130$(eval $(call cryp-dep-one, SM2_KEP, ECC))
131
132###############################################################
133# libtomcrypt (LTC) specifics, phase #1
134# LTC is only configured via _CFG_CORE_LTC_ prefixed variables
135#
136# _CFG_CORE_LTC_xxx_DESC means that LTC will only register the
137# descriptor of the algorithm, not provide a
138# crypt_xxx_alloc_ctx() function.
139###############################################################
140
141# If LTC is the cryptolib, pull configuration from CFG_CRYPTO_xxx
142ifeq ($(CFG_CRYPTOLIB_NAME),tomcrypt)
143# dsa_make_params() needs all three SHA-2 algorithms.
144# Disable DSA if any is missing.
145$(eval $(call cryp-dep-all, DSA, SHA256 SHA384 SHA512))
146
147# Assign _CFG_CORE_LTC_xxx based on CFG_CRYPTO_yyy
148core-ltc-vars = AES DES
149core-ltc-vars += ECB CBC CTR CTS XTS
150core-ltc-vars += MD5 SHA1 SHA224 SHA256 SHA384 SHA512 SHA512_256
151core-ltc-vars += HMAC CMAC CBC_MAC
152core-ltc-vars += CCM
153ifeq ($(CFG_CRYPTO_AES_GCM_FROM_CRYPTOLIB),y)
154core-ltc-vars += GCM
155endif
156core-ltc-vars += RSA DSA DH ECC
157core-ltc-vars += SIZE_OPTIMIZATION
158core-ltc-vars += SM2_PKE
159core-ltc-vars += SM2_DSA
160core-ltc-vars += SM2_KEP
161# Assigned selected CFG_CRYPTO_xxx as _CFG_CORE_LTC_xxx
162$(foreach v, $(core-ltc-vars), $(eval _CFG_CORE_LTC_$(v) := $(CFG_CRYPTO_$(v))))
163_CFG_CORE_LTC_MPI := $(CFG_CORE_MBEDTLS_MPI)
164_CFG_CORE_LTC_AES_ACCEL := $(CFG_CORE_CRYPTO_AES_ACCEL)
165_CFG_CORE_LTC_SHA1_ACCEL := $(CFG_CORE_CRYPTO_SHA1_ACCEL)
166_CFG_CORE_LTC_SHA256_ACCEL := $(CFG_CORE_CRYPTO_SHA256_ACCEL)
167endif
168
169###############################################################
170# mbedtls specifics
171###############################################################
172
173ifeq ($(CFG_CRYPTOLIB_NAME),mbedtls)
174# mbedtls has to be complemented with some algorithms by LTC
175# Specify the algorithms here
176_CFG_CORE_LTC_DSA := $(CFG_CRYPTO_DSA)
177_CFG_CORE_LTC_MPI := $(CFG_CRYPTO_DSA)
178_CFG_CORE_LTC_SHA256_DESC := $(CFG_CRYPTO_DSA)
179_CFG_CORE_LTC_SHA384_DESC := $(CFG_CRYPTO_DSA)
180_CFG_CORE_LTC_SHA512_DESC := $(CFG_CRYPTO_DSA)
181_CFG_CORE_LTC_XTS := $(CFG_CRYPTO_XTS)
182_CFG_CORE_LTC_CCM := $(CFG_CRYPTO_CCM)
183_CFG_CORE_LTC_AES_DESC := $(call cfg-one-enabled, CFG_CRYPTO_XTS CFG_CRYPTO_CCM)
184endif
185
186###############################################################
187# libtomcrypt (LTC) specifics, phase #2
188###############################################################
189
190_CFG_CORE_LTC_SHA256_DESC := $(call cfg-one-enabled, _CFG_CORE_LTC_SHA256_DESC \
191						     _CFG_CORE_LTC_SHA224 \
192						     _CFG_CORE_LTC_SHA256)
193_CFG_CORE_LTC_SHA384_DESC := $(call cfg-one-enabled, _CFG_CORE_LTC_SHA384_DESC \
194						     _CFG_CORE_LTC_SHA384)
195_CFG_CORE_LTC_SHA512_DESC := $(call cfg-one-enabled, _CFG_CORE_LTC_SHA512_DESC \
196						     _CFG_CORE_LTC_SHA512_256 \
197						     _CFG_CORE_LTC_SHA512)
198_CFG_CORE_LTC_AES_DESC := $(call cfg-one-enabled, _CFG_CORE_LTC_AES_DESC \
199						  _CFG_CORE_LTC_AES)
200
201# Assign system variables
202_CFG_CORE_LTC_CE := $(CFG_CRYPTO_WITH_CE)
203_CFG_CORE_LTC_VFP := $(CFG_WITH_VFP)
204_CFG_CORE_LTC_BIGNUM_MAX_BITS := $(CFG_CORE_BIGNUM_MAX_BITS)
205_CFG_CORE_LTC_PAGER := $(CFG_WITH_PAGER)
206ifneq ($(CFG_NUM_THREADS),1)
207_CFG_CORE_LTC_OPTEE_THREAD := y
208else
209_CFG_CORE_LTC_OPTEE_THREAD := n
210endif
211_CFG_CORE_LTC_HWSUPP_PMULL := $(CFG_HWSUPP_PMULL)
212
213# Assign aggregated variables
214ltc-one-enabled = $(call cfg-one-enabled,$(foreach v,$(1),_CFG_CORE_LTC_$(v)))
215_CFG_CORE_LTC_ACIPHER := $(call ltc-one-enabled, RSA DSA DH ECC)
216_CFG_CORE_LTC_AUTHENC := $(and $(filter y,$(_CFG_CORE_LTC_AES_DESC)), \
217			       $(filter y,$(call ltc-one-enabled, CCM GCM)))
218_CFG_CORE_LTC_CIPHER := $(call ltc-one-enabled, AES_DESC DES)
219_CFG_CORE_LTC_HASH := $(call ltc-one-enabled, MD5 SHA1 SHA224 SHA256 SHA384 \
220					      SHA512)
221_CFG_CORE_LTC_MAC := $(call ltc-one-enabled, HMAC CMAC CBC_MAC)
222_CFG_CORE_LTC_CBC := $(call ltc-one-enabled, CBC CBC_MAC)
223_CFG_CORE_LTC_ASN1 := $(call ltc-one-enabled, RSA DSA ECC)
224
225###############################################################
226# Platform independent crypto-driver configuration
227###############################################################
228CRYPTO_MAKEFILES := $(sort $(wildcard core/drivers/crypto/*/crypto.mk))
229include $(CRYPTO_MAKEFILES)
230
231# Enable TEE_ALG_RSASSA_PKCS1_V1_5 algorithm for signing with PKCS#1 v1.5 EMSA
232# without ASN.1 around the hash.
233ifeq ($(CFG_CRYPTOLIB_NAME),tomcrypt)
234CFG_CRYPTO_RSASSA_NA1 ?= y
235endif
236