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4908787f21
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)
78 lines
3.3 KiB
C
78 lines
3.3 KiB
C
/*
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* Copyright 2022 The OpenSSL Project Authors. All Rights Reserved.
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*
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* Licensed under the Apache License 2.0 (the "License"). You may not use
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* this file except in compliance with the License. You can obtain a copy
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* in the file LICENSE in the source distribution or at
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* https://www.openssl.org/source/license.html
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*/
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#ifndef OSSL_SM4_PLATFORM_H
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# define OSSL_SM4_PLATFORM_H
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# pragma once
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# if defined(OPENSSL_CPUID_OBJ)
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# if (defined(__arm__) || defined(__arm) || defined(__aarch64__))
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# include "arm_arch.h"
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# if __ARM_MAX_ARCH__>=8
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extern unsigned int OPENSSL_arm_midr;
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static inline int vpsm4_capable(void)
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{
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return (OPENSSL_armcap_P & ARMV8_CPUID) &&
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(MIDR_IS_CPU_MODEL(OPENSSL_arm_midr, ARM_CPU_IMP_ARM, ARM_CPU_PART_V1) ||
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MIDR_IS_CPU_MODEL(OPENSSL_arm_midr, ARM_CPU_IMP_ARM, ARM_CPU_PART_N1));
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}
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# if defined(VPSM4_ASM)
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# define VPSM4_CAPABLE vpsm4_capable()
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# endif
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# define HWSM4_CAPABLE (OPENSSL_armcap_P & ARMV8_SM4)
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# define HWSM4_set_encrypt_key sm4_v8_set_encrypt_key
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# define HWSM4_set_decrypt_key sm4_v8_set_decrypt_key
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# define HWSM4_encrypt sm4_v8_encrypt
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# define HWSM4_decrypt sm4_v8_decrypt
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# define HWSM4_cbc_encrypt sm4_v8_cbc_encrypt
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# define HWSM4_ecb_encrypt sm4_v8_ecb_encrypt
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# define HWSM4_ctr32_encrypt_blocks sm4_v8_ctr32_encrypt_blocks
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# endif
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# endif
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# endif /* OPENSSL_CPUID_OBJ */
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# if defined(HWSM4_CAPABLE)
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int HWSM4_set_encrypt_key(const unsigned char *userKey, SM4_KEY *key);
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int HWSM4_set_decrypt_key(const unsigned char *userKey, SM4_KEY *key);
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void HWSM4_encrypt(const unsigned char *in, unsigned char *out,
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const SM4_KEY *key);
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void HWSM4_decrypt(const unsigned char *in, unsigned char *out,
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const SM4_KEY *key);
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void HWSM4_cbc_encrypt(const unsigned char *in, unsigned char *out,
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size_t length, const SM4_KEY *key,
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unsigned char *ivec, const int enc);
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void HWSM4_ecb_encrypt(const unsigned char *in, unsigned char *out,
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size_t length, const SM4_KEY *key,
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const int enc);
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void HWSM4_ctr32_encrypt_blocks(const unsigned char *in, unsigned char *out,
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size_t len, const void *key,
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const unsigned char ivec[16]);
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# endif /* HWSM4_CAPABLE */
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#ifdef VPSM4_CAPABLE
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int vpsm4_set_encrypt_key(const unsigned char *userKey, SM4_KEY *key);
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int vpsm4_set_decrypt_key(const unsigned char *userKey, SM4_KEY *key);
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void vpsm4_encrypt(const unsigned char *in, unsigned char *out,
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const SM4_KEY *key);
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void vpsm4_decrypt(const unsigned char *in, unsigned char *out,
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const SM4_KEY *key);
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void vpsm4_cbc_encrypt(const unsigned char *in, unsigned char *out,
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size_t length, const SM4_KEY *key,
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unsigned char *ivec, const int enc);
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void vpsm4_ecb_encrypt(const unsigned char *in, unsigned char *out,
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size_t length, const SM4_KEY *key,
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const int enc);
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void vpsm4_ctr32_encrypt_blocks(const unsigned char *in, unsigned char *out,
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size_t len, const void *key,
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const unsigned char ivec[16]);
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# endif /* VPSM4_CAPABLE */
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#endif /* OSSL_SM4_PLATFORM_H */
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