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/*
* Copyright 2019 The OpenSSL Project Authors. All Rights Reserved.
*
* Licensed under the Apache License 2.0 (the "License"). You may not use
* this file except in compliance with the License. You can obtain a copy
* in the file LICENSE in the source distribution or at
* https://www.openssl.org/source/license.html
*/
/* AES CCM mode */
#include "cipher_locl.h"
#include "internal/ciphers/cipher_ccm.h"
#define AES_HW_CCM_SET_KEY_FN(fn_set_enc_key, fn_blk, fn_ccm_enc, fn_ccm_dec) \
fn_set_enc_key(key, keylen * 8, &actx->ccm.ks.ks); \
CRYPTO_ccm128_init(&ctx->ccm_ctx, ctx->m, ctx->l, &actx->ccm.ks.ks, \
(block128_f)fn_blk); \
ctx->str = ctx->enc ? (ccm128_f)fn_ccm_enc : (ccm128_f)fn_ccm_dec; \
ctx->key_set = 1;
static int ccm_generic_aes_initkey(PROV_CCM_CTX *ctx, const unsigned char *key,
size_t keylen)
{
PROV_AES_CCM_CTX *actx = (PROV_AES_CCM_CTX *)ctx;
#ifdef HWAES_CAPABLE
if (HWAES_CAPABLE) {
AES_HW_CCM_SET_KEY_FN(HWAES_set_encrypt_key, HWAES_encrypt, NULL, NULL);
} else
#endif /* HWAES_CAPABLE */
#ifdef VPAES_CAPABLE
if (VPAES_CAPABLE) {
AES_HW_CCM_SET_KEY_FN(vpaes_set_encrypt_key, vpaes_encrypt, NULL, NULL);
} else
#endif
{
AES_HW_CCM_SET_KEY_FN(AES_set_encrypt_key, AES_encrypt, NULL, NULL)
}
return 1;
}
static const PROV_CCM_HW aes_ccm = {
ccm_generic_aes_initkey,
ccm_generic_setiv,
ccm_generic_setaad,
ccm_generic_auth_encrypt,
ccm_generic_auth_decrypt,
ccm_generic_gettag
};
#if defined(S390X_aes_128_CAPABLE)
# include "cipher_aes_ccm_hw_s390x.inc"
#elif defined(AESNI_CAPABLE)
# include "cipher_aes_ccm_hw_aesni.inc"
#elif defined(SPARC_AES_CAPABLE)
# include "cipher_aes_ccm_hw_t4.inc"
#else
const PROV_CCM_HW *PROV_AES_HW_ccm(size_t keybits)
{
return &aes_ccm;
}
#endif
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