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