providers/implementations/ciphers/cipher_sm4_hw.c

   1 /*
   2  * Copyright 2019 The OpenSSL Project Authors. All Rights Reserved.
   3  *
   4  * Licensed under the Apache License 2.0 (the "License").  You may not use
   5  * this file except in compliance with the License.  You can obtain a copy
   6  * in the file LICENSE in the source distribution or at
   7  * https://www.openssl.org/source/license.html
   8  */
   9
  10 #include "cipher_sm4.h"
  11
  12 static int cipher_hw_sm4_initkey(PROV_CIPHER_CTX *ctx,
  13                                  const unsigned char *key, size_t keylen)
  14 {
  15     PROV_SM4_CTX *sctx =  (PROV_SM4_CTX *)ctx;
  16     SM4_KEY *ks = &sctx->ks.ks;
  17
  18     SM4_set_key(key, ks);
  19     ctx->ks = ks;
  20     if (ctx->enc
  21             || (ctx->mode != EVP_CIPH_ECB_MODE
  22                 && ctx->mode != EVP_CIPH_CBC_MODE))
  23         ctx->block = (block128_f)SM4_encrypt;
  24     else
  25         ctx->block = (block128_f)SM4_decrypt;
  26     return 1;
  27 }
  28
  29 IMPLEMENT_CIPHER_HW_COPYCTX(cipher_hw_sm4_copyctx, PROV_SM4_CTX)
  30
  31 # define PROV_CIPHER_HW_sm4_mode(mode)                                         \
  32 static const PROV_CIPHER_HW sm4_##mode = {                                     \
  33     cipher_hw_sm4_initkey,                                                     \
  34     cipher_hw_chunked_##mode,                                                  \
  35     cipher_hw_sm4_copyctx                                                      \
  36 };                                                                             \
  37 const PROV_CIPHER_HW *PROV_CIPHER_HW_sm4_##mode(size_t keybits)                \
  38 {                                                                              \
  39     return &sm4_##mode;                                                        \
  40 }
  41
  42 PROV_CIPHER_HW_sm4_mode(cbc)
  43 PROV_CIPHER_HW_sm4_mode(ecb)
  44 PROV_CIPHER_HW_sm4_mode(ofb128)
  45 PROV_CIPHER_HW_sm4_mode(cfb128)
  46 PROV_CIPHER_HW_sm4_mode(ctr)