providers/common/ciphers/cipher_aes_ccm_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 /* AES CCM mode */
  11
  12 #include "cipher_locl.h"
  13 #include "internal/ciphers/cipher_ccm.h"
  14
  15 #define AES_HW_CCM_SET_KEY_FN(fn_set_enc_key, fn_blk, fn_ccm_enc, fn_ccm_dec)  \
  16     fn_set_enc_key(key, keylen * 8, &actx->ccm.ks.ks);                         \
  17     CRYPTO_ccm128_init(&ctx->ccm_ctx, ctx->m, ctx->l, &actx->ccm.ks.ks,        \
  18                        (block128_f)fn_blk);                                    \
  19     ctx->str = ctx->enc ? (ccm128_f)fn_ccm_enc : (ccm128_f)fn_ccm_dec;         \
  20     ctx->key_set = 1;
  21
  22 static int ccm_generic_aes_initkey(PROV_CCM_CTX *ctx, const unsigned char *key,
  23                                    size_t keylen)
  24 {
  25     PROV_AES_CCM_CTX *actx = (PROV_AES_CCM_CTX *)ctx;
  26
  27 #ifdef HWAES_CAPABLE
  28     if (HWAES_CAPABLE) {
  29         AES_HW_CCM_SET_KEY_FN(HWAES_set_encrypt_key, HWAES_encrypt, NULL, NULL);
  30     } else
  31 #endif /* HWAES_CAPABLE */
  32
  33 #ifdef VPAES_CAPABLE
  34     if (VPAES_CAPABLE) {
  35         AES_HW_CCM_SET_KEY_FN(vpaes_set_encrypt_key, vpaes_encrypt, NULL, NULL);
  36     } else
  37 #endif
  38     {
  39         AES_HW_CCM_SET_KEY_FN(AES_set_encrypt_key, AES_encrypt, NULL, NULL)
  40     }
  41     return 1;
  42 }
  43
  44 static const PROV_CCM_HW aes_ccm = {
  45     ccm_generic_aes_initkey,
  46     ccm_generic_setiv,
  47     ccm_generic_setaad,
  48     ccm_generic_auth_encrypt,
  49     ccm_generic_auth_decrypt,
  50     ccm_generic_gettag
  51 };
  52
  53 #if defined(S390X_aes_128_CAPABLE)
  54 # include "cipher_aes_ccm_hw_s390x.inc"
  55 #elif defined(AESNI_CAPABLE)
  56 # include "cipher_aes_ccm_hw_aesni.inc"
  57 #elif defined(SPARC_AES_CAPABLE)
  58 # include "cipher_aes_ccm_hw_t4.inc"
  59 #else
  60 const PROV_CCM_HW *PROV_AES_HW_ccm(size_t keybits)
  61 {
  62     return &aes_ccm;
  63 }
  64 #endif