diff options
| author | Daniel Hu <Daniel.Hu@arm.com> | 2022-02-14 14:36:34 +0000 |
|---|---|---|
| committer | Tomas Mraz <tomas@openssl.org> | 2022-04-12 10:37:42 +0200 |
| commit | 4908787f21f4f5fa24b721ed3ebbc4d3e93ef70c (patch) | |
| tree | ff233074dbc689698d6c458f9475edca6cdec723 /include | |
| parent | 40fb5a4ce3e90c9e8702aad0fcf43eb9f6edf419 (diff) | |
SM4 optimization for ARM by ASIMD
This patch optimizes SM4 for ARM processor using ASIMD instruction
It will improve performance if both of following conditions are met:
1) Input data equal to or more than 4 blocks
2) Cipher mode allows parallelism, including ECB,CTR,GCM or CBC decryption
This patch implements SM4 SBOX lookup in vector registers, with the
benefit of constant processing time over existing C implementation.
It is only enabled for micro-architecture N1/V1. In the ideal scenario,
performance can reach up to 2.7X
When either of above two conditions is not met, e.g. single block input
or CFB/OFB mode, CBC encryption, performance could drop about 50%.
The assembly code has been reviewed internally by ARM engineer
Fangming.Fang@arm.com
Signed-off-by: Daniel Hu <Daniel.Hu@arm.com>
Reviewed-by: Paul Dale <pauli@openssl.org>
Reviewed-by: Tomas Mraz <tomas@openssl.org>
(Merged from https://github.com/openssl/openssl/pull/17951)
Diffstat (limited to 'include')
| -rw-r--r-- | include/crypto/sm4_platform.h | 29 |
1 files changed, 29 insertions, 0 deletions
diff --git a/include/crypto/sm4_platform.h b/include/crypto/sm4_platform.h index 42c8b44a43..11f9b9d88b 100644 --- a/include/crypto/sm4_platform.h +++ b/include/crypto/sm4_platform.h @@ -15,6 +15,16 @@ # if (defined(__arm__) || defined(__arm) || defined(__aarch64__)) # include "arm_arch.h" # if __ARM_MAX_ARCH__>=8 +extern unsigned int OPENSSL_arm_midr; +static inline int vpsm4_capable(void) +{ + return (OPENSSL_armcap_P & ARMV8_CPUID) && + (MIDR_IS_CPU_MODEL(OPENSSL_arm_midr, ARM_CPU_IMP_ARM, ARM_CPU_PART_V1) || + MIDR_IS_CPU_MODEL(OPENSSL_arm_midr, ARM_CPU_IMP_ARM, ARM_CPU_PART_N1)); +} +# if defined(VPSM4_ASM) +# define VPSM4_CAPABLE vpsm4_capable() +# endif # define HWSM4_CAPABLE (OPENSSL_armcap_P & ARMV8_SM4) # define HWSM4_set_encrypt_key sm4_v8_set_encrypt_key # define HWSM4_set_decrypt_key sm4_v8_set_decrypt_key @@ -45,4 +55,23 @@ void HWSM4_ctr32_encrypt_blocks(const unsigned char *in, unsigned char *out, const unsigned char ivec[16]); # endif /* HWSM4_CAPABLE */ +#ifdef VPSM4_CAPABLE +int vpsm4_set_encrypt_key(const unsigned char *userKey, SM4_KEY *key); +int vpsm4_set_decrypt_key(const unsigned char *userKey, SM4_KEY *key); +void vpsm4_encrypt(const unsigned char *in, unsigned char *out, + const SM4_KEY *key); +void vpsm4_decrypt(const unsigned char *in, unsigned char *out, + const SM4_KEY *key); +void vpsm4_cbc_encrypt(const unsigned char *in, unsigned char *out, + size_t length, const SM4_KEY *key, + unsigned char *ivec, const int enc); +void vpsm4_ecb_encrypt(const unsigned char *in, unsigned char *out, + size_t length, const SM4_KEY *key, + const int enc); +void vpsm4_ctr32_encrypt_blocks(const unsigned char *in, unsigned char *out, + size_t len, const void *key, + const unsigned char ivec[16]); +# endif /* VPSM4_CAPABLE */ + + #endif /* OSSL_SM4_PLATFORM_H */ |