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https://github.com/openssl/openssl.git
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140 lines
5.1 KiB
C
140 lines
5.1 KiB
C
/*
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* Copyright 2019-2023 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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#include "cipher_sm4.h"
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static int cipher_hw_sm4_initkey(PROV_CIPHER_CTX *ctx,
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const unsigned char *key, size_t keylen)
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{
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PROV_SM4_CTX *sctx = (PROV_SM4_CTX *)ctx;
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SM4_KEY *ks = &sctx->ks.ks;
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ctx->ks = ks;
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if (ctx->enc
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|| (ctx->mode != EVP_CIPH_ECB_MODE
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&& ctx->mode != EVP_CIPH_CBC_MODE)) {
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#ifdef HWSM4_CAPABLE
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if (HWSM4_CAPABLE) {
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HWSM4_set_encrypt_key(key, ks);
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ctx->block = (block128_f)HWSM4_encrypt;
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ctx->stream.cbc = NULL;
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#ifdef HWSM4_cbc_encrypt
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if (ctx->mode == EVP_CIPH_CBC_MODE)
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ctx->stream.cbc = (cbc128_f)HWSM4_cbc_encrypt;
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else
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#endif
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#ifdef HWSM4_ecb_encrypt
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if (ctx->mode == EVP_CIPH_ECB_MODE)
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ctx->stream.ecb = (ecb128_f)HWSM4_ecb_encrypt;
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else
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#endif
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#ifdef HWSM4_ctr32_encrypt_blocks
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if (ctx->mode == EVP_CIPH_CTR_MODE)
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ctx->stream.ctr = (ctr128_f)HWSM4_ctr32_encrypt_blocks;
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else
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#endif
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(void)0; /* terminate potentially open 'else' */
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} else
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#endif
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#ifdef VPSM4_EX_CAPABLE
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if (VPSM4_EX_CAPABLE) {
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vpsm4_ex_set_encrypt_key(key, ks);
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ctx->block = (block128_f)vpsm4_ex_encrypt;
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ctx->stream.cbc = NULL;
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if (ctx->mode == EVP_CIPH_CBC_MODE)
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ctx->stream.cbc = (cbc128_f)vpsm4_ex_cbc_encrypt;
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else if (ctx->mode == EVP_CIPH_ECB_MODE)
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ctx->stream.ecb = (ecb128_f)vpsm4_ex_ecb_encrypt;
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else if (ctx->mode == EVP_CIPH_CTR_MODE)
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ctx->stream.ctr = (ctr128_f)vpsm4_ex_ctr32_encrypt_blocks;
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} else
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#endif
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#ifdef VPSM4_CAPABLE
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if (VPSM4_CAPABLE) {
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vpsm4_set_encrypt_key(key, ks);
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ctx->block = (block128_f)vpsm4_encrypt;
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ctx->stream.cbc = NULL;
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if (ctx->mode == EVP_CIPH_CBC_MODE)
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ctx->stream.cbc = (cbc128_f)vpsm4_cbc_encrypt;
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else if (ctx->mode == EVP_CIPH_ECB_MODE)
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ctx->stream.ecb = (ecb128_f)vpsm4_ecb_encrypt;
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else if (ctx->mode == EVP_CIPH_CTR_MODE)
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ctx->stream.ctr = (ctr128_f)vpsm4_ctr32_encrypt_blocks;
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} else
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#endif
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{
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ossl_sm4_set_key(key, ks);
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ctx->block = (block128_f)ossl_sm4_encrypt;
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}
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} else {
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#ifdef HWSM4_CAPABLE
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if (HWSM4_CAPABLE) {
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HWSM4_set_decrypt_key(key, ks);
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ctx->block = (block128_f)HWSM4_decrypt;
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ctx->stream.cbc = NULL;
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#ifdef HWSM4_cbc_encrypt
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if (ctx->mode == EVP_CIPH_CBC_MODE)
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ctx->stream.cbc = (cbc128_f)HWSM4_cbc_encrypt;
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#endif
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#ifdef HWSM4_ecb_encrypt
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if (ctx->mode == EVP_CIPH_ECB_MODE)
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ctx->stream.ecb = (ecb128_f)HWSM4_ecb_encrypt;
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#endif
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} else
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#endif
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#ifdef VPSM4_EX_CAPABLE
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if (VPSM4_EX_CAPABLE) {
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vpsm4_ex_set_decrypt_key(key, ks);
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ctx->block = (block128_f)vpsm4_ex_decrypt;
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ctx->stream.cbc = NULL;
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if (ctx->mode == EVP_CIPH_CBC_MODE)
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ctx->stream.cbc = (cbc128_f)vpsm4_ex_cbc_encrypt;
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else if (ctx->mode == EVP_CIPH_ECB_MODE)
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ctx->stream.ecb = (ecb128_f)vpsm4_ex_ecb_encrypt;
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} else
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#endif
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#ifdef VPSM4_CAPABLE
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if (VPSM4_CAPABLE) {
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vpsm4_set_decrypt_key(key, ks);
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ctx->block = (block128_f)vpsm4_decrypt;
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ctx->stream.cbc = NULL;
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if (ctx->mode == EVP_CIPH_CBC_MODE)
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ctx->stream.cbc = (cbc128_f)vpsm4_cbc_encrypt;
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else if (ctx->mode == EVP_CIPH_ECB_MODE)
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ctx->stream.ecb = (ecb128_f)vpsm4_ecb_encrypt;
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} else
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#endif
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{
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ossl_sm4_set_key(key, ks);
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ctx->block = (block128_f)ossl_sm4_decrypt;
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}
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}
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return 1;
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}
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IMPLEMENT_CIPHER_HW_COPYCTX(cipher_hw_sm4_copyctx, PROV_SM4_CTX)
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# define PROV_CIPHER_HW_sm4_mode(mode) \
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static const PROV_CIPHER_HW sm4_##mode = { \
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cipher_hw_sm4_initkey, \
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ossl_cipher_hw_generic_##mode, \
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cipher_hw_sm4_copyctx \
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}; \
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const PROV_CIPHER_HW *ossl_prov_cipher_hw_sm4_##mode(size_t keybits) \
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{ \
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return &sm4_##mode; \
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}
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PROV_CIPHER_HW_sm4_mode(cbc)
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PROV_CIPHER_HW_sm4_mode(ecb)
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PROV_CIPHER_HW_sm4_mode(ofb128)
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PROV_CIPHER_HW_sm4_mode(cfb128)
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PROV_CIPHER_HW_sm4_mode(ctr)
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