providers/implementations/ciphers/cipher_sm4_hw.c

   1 /*
   2  * Copyright 2019-2021 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     ctx->ks = ks;
  19     if (ctx->enc
  20             || (ctx->mode != EVP_CIPH_ECB_MODE
  21                 && ctx->mode != EVP_CIPH_CBC_MODE)) {
  22 #ifdef HWSM4_CAPABLE
  23         if (HWSM4_CAPABLE) {
  24             HWSM4_set_encrypt_key(key, ks);
  25             ctx->block = (block128_f)HWSM4_encrypt;
  26             ctx->stream.cbc = NULL;
  27 #ifdef HWSM4_cbc_encrypt
  28             if (ctx->mode == EVP_CIPH_CBC_MODE)
  29                 ctx->stream.cbc = (cbc128_f)HWSM4_cbc_encrypt;
  30             else
  31 #endif
  32 #ifdef HWSM4_ecb_encrypt
  33             if (ctx->mode == EVP_CIPH_ECB_MODE)
  34                 ctx->stream.ecb = (ecb128_f)HWSM4_ecb_encrypt;
  35             else
  36 #endif
  37 #ifdef HWSM4_ctr32_encrypt_blocks
  38             if (ctx->mode == EVP_CIPH_CTR_MODE)
  39                 ctx->stream.ctr = (ctr128_f)HWSM4_ctr32_encrypt_blocks;
  40             else
  41 #endif
  42             (void)0;            /* terminate potentially open 'else' */
  43         } else
  44 #endif
  45 #ifdef VPSM4_CAPABLE
  46         if (VPSM4_CAPABLE) {
  47             vpsm4_set_encrypt_key(key, ks);
  48             ctx->block = (block128_f)vpsm4_encrypt;
  49             ctx->stream.cbc = NULL;
  50             if (ctx->mode == EVP_CIPH_CBC_MODE)
  51                 ctx->stream.cbc = (cbc128_f)vpsm4_cbc_encrypt;
  52             else if (ctx->mode == EVP_CIPH_ECB_MODE)
  53                 ctx->stream.ecb = (ecb128_f)vpsm4_ecb_encrypt;
  54             else if (ctx->mode == EVP_CIPH_CTR_MODE)
  55                 ctx->stream.ctr = (ctr128_f)vpsm4_ctr32_encrypt_blocks;
  56         } else
  57 #endif
  58         {
  59             ossl_sm4_set_key(key, ks);
  60             ctx->block = (block128_f)ossl_sm4_encrypt;
  61         }
  62     } else {
  63 #ifdef HWSM4_CAPABLE
  64         if (HWSM4_CAPABLE) {
  65             HWSM4_set_decrypt_key(key, ks);
  66             ctx->block = (block128_f)HWSM4_decrypt;
  67             ctx->stream.cbc = NULL;
  68 #ifdef HWSM4_cbc_encrypt
  69             if (ctx->mode == EVP_CIPH_CBC_MODE)
  70                 ctx->stream.cbc = (cbc128_f)HWSM4_cbc_encrypt;
  71 #endif
  72 #ifdef HWSM4_ecb_encrypt
  73             if (ctx->mode == EVP_CIPH_ECB_MODE)
  74                 ctx->stream.ecb = (ecb128_f)HWSM4_ecb_encrypt;
  75 #endif
  76         } else
  77 #endif
  78 #ifdef VPSM4_CAPABLE
  79         if (VPSM4_CAPABLE) {
  80             vpsm4_set_decrypt_key(key, ks);
  81             ctx->block = (block128_f)vpsm4_decrypt;
  82             ctx->stream.cbc = NULL;
  83             if (ctx->mode == EVP_CIPH_CBC_MODE)
  84                 ctx->stream.cbc = (cbc128_f)vpsm4_cbc_encrypt;
  85         else if (ctx->mode == EVP_CIPH_ECB_MODE)
  86                 ctx->stream.ecb = (ecb128_f)vpsm4_ecb_encrypt;
  87         } else
  88 #endif
  89         {
  90             ossl_sm4_set_key(key, ks);
  91             ctx->block = (block128_f)ossl_sm4_decrypt;
  92         }
  93     }
  94
  95     return 1;
  96 }
  97
  98 IMPLEMENT_CIPHER_HW_COPYCTX(cipher_hw_sm4_copyctx, PROV_SM4_CTX)
  99
 100 # define PROV_CIPHER_HW_sm4_mode(mode)                                         \
 101 static const PROV_CIPHER_HW sm4_##mode = {                                     \
 102     cipher_hw_sm4_initkey,                                                     \
 103     ossl_cipher_hw_generic_##mode,                                             \
 104     cipher_hw_sm4_copyctx                                                      \
 105 };                                                                             \
 106 const PROV_CIPHER_HW *ossl_prov_cipher_hw_sm4_##mode(size_t keybits)           \
 107 {                                                                              \
 108     return &sm4_##mode;                                                        \
 109 }
 110
 111 PROV_CIPHER_HW_sm4_mode(cbc)
 112 PROV_CIPHER_HW_sm4_mode(ecb)
 113 PROV_CIPHER_HW_sm4_mode(ofb128)
 114 PROV_CIPHER_HW_sm4_mode(cfb128)
 115 PROV_CIPHER_HW_sm4_mode(ctr)