mirror of
https://github.com/openssl/openssl.git
synced 2024-12-21 06:09:35 +08:00
44 lines
1.0 KiB
C
44 lines
1.0 KiB
C
|
/*
|
||
|
|
* 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 GCM.
|
||
|
|
*/
|
||
|
|
|
||
|
|
#include "cipher_sm4_gcm.h"
|
||
|
|
|
||
|
|
static int sm4_gcm_initkey(PROV_GCM_CTX *ctx, const unsigned char *key,
|
||
|
|
size_t keylen)
|
||
|
|
{
|
||
|
|
PROV_SM4_GCM_CTX *actx = (PROV_SM4_GCM_CTX *)ctx;
|
||
|
|
SM4_KEY *ks = &actx->ks.ks;
|
||
|
|
|
||
|
|
ctx->ks = ks;
|
||
|
|
ossl_sm4_set_key(key, ks);
|
||
|
|
CRYPTO_gcm128_init(&ctx->gcm, ks, (block128_f)ossl_sm4_encrypt);
|
||
|
|
ctx->ctr = (ctr128_f)NULL;
|
||
|
|
ctx->key_set = 1;
|
||
|
|
|
||
|
|
return 1;
|
||
|
|
}
|
||
|
|
|
||
|
|
static const PROV_GCM_HW sm4_gcm = {
|
||
|
|
sm4_gcm_initkey,
|
||
|
|
ossl_gcm_setiv,
|
||
|
|
ossl_gcm_aad_update,
|
||
|
|
ossl_gcm_cipher_update,
|
||
|
|
ossl_gcm_cipher_final,
|
||
|
|
ossl_gcm_one_shot
|
||
|
|
};
|
||
|
|
|
||
|
|
const PROV_GCM_HW *ossl_prov_sm4_hw_gcm(size_t keybits)
|
||
|
|
{
|
||
|
|
return &sm4_gcm;
|
||
|
|
}
|