Viewing file:  cipher_sm4.c (1.63 KB) -rw-r--r--
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/*
* Copyright 2019-2020 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
*/
/* Dispatch functions for cast cipher modes ecb, cbc, ofb, cfb */
#include "cipher_sm4.h"
#include "prov/implementations.h"
#include "prov/providercommon.h"
static OSSL_FUNC_cipher_freectx_fn sm4_freectx;
static OSSL_FUNC_cipher_dupctx_fn sm4_dupctx;
static void sm4_freectx(void *vctx)
{
PROV_SM4_CTX *ctx = (PROV_SM4_CTX *)vctx;
ossl_cipher_generic_reset_ctx((PROV_CIPHER_CTX *)vctx);
OPENSSL_clear_free(ctx, sizeof(*ctx));
}
static void *sm4_dupctx(void *ctx)
{
PROV_SM4_CTX *in = (PROV_SM4_CTX *)ctx;
PROV_SM4_CTX *ret;
if (!ossl_prov_is_running())
return NULL;
ret = OPENSSL_malloc(sizeof(*ret));
if (ret == NULL) {
ERR_raise(ERR_LIB_PROV, ERR_R_MALLOC_FAILURE);
return NULL;
}
in->base.hw->copyctx(&ret->base, &in->base);
return ret;
}
/* ossl_sm4128ecb_functions */
IMPLEMENT_generic_cipher(sm4, SM4, ecb, ECB, 0, 128, 128, 0, block)
/* ossl_sm4128cbc_functions */
IMPLEMENT_generic_cipher(sm4, SM4, cbc, CBC, 0, 128, 128, 128, block)
/* ossl_sm4128ctr_functions */
IMPLEMENT_generic_cipher(sm4, SM4, ctr, CTR, 0, 128, 8, 128, stream)
/* ossl_sm4128ofb128_functions */
IMPLEMENT_generic_cipher(sm4, SM4, ofb128, OFB, 0, 128, 8, 128, stream)
/* ossl_sm4128cfb128_functions */
IMPLEMENT_generic_cipher(sm4, SM4, cfb128, CFB, 0, 128, 8, 128, stream)
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