blob: 791daf3e46f3c72950172e7cf15a04fabba63604 [file] [log] [blame]
/*
* Copyright 2021 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
*/
/*-
* Generic support for SM4 CCM.
*/
#include "cipher_sm4_ccm.h"
static int ccm_sm4_initkey(PROV_CCM_CTX *ctx,
const unsigned char *key, size_t keylen)
{
PROV_SM4_CCM_CTX *actx = (PROV_SM4_CCM_CTX *)ctx;
ossl_sm4_set_key(key, &actx->ks.ks);
CRYPTO_ccm128_init(&ctx->ccm_ctx, ctx->m, ctx->l, &actx->ks.ks,
(block128_f)ossl_sm4_encrypt);
ctx->str = NULL;
ctx->key_set = 1;
return 1;
}
static const PROV_CCM_HW ccm_sm4 = {
ccm_sm4_initkey,
ossl_ccm_generic_setiv,
ossl_ccm_generic_setaad,
ossl_ccm_generic_auth_encrypt,
ossl_ccm_generic_auth_decrypt,
ossl_ccm_generic_gettag
};
const PROV_CCM_HW *ossl_prov_sm4_hw_ccm(size_t keybits)
{
return &ccm_sm4;
}