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/*
* Copyright 2021-2024 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 SM4 CCM mode */
#include "cipher_sm4_ccm.h"
#include "prov/implementations.h"
#include "prov/providercommon.h"
static OSSL_FUNC_cipher_freectx_fn sm4_ccm_freectx;
static void *sm4_ccm_newctx(void *provctx, size_t keybits)
{
PROV_SM4_CCM_CTX *ctx;
if (!ossl_prov_is_running())
return NULL;
ctx = OPENSSL_zalloc(sizeof(*ctx));
if (ctx != NULL)
ossl_ccm_initctx(&ctx->base, keybits, ossl_prov_sm4_hw_ccm(keybits));
return ctx;
}
static void *sm4_ccm_dupctx(void *provctx)
{
PROV_SM4_CCM_CTX *ctx = provctx;
PROV_SM4_CCM_CTX *dctx = NULL;
if (ctx == NULL)
return NULL;
dctx = OPENSSL_memdup(ctx, sizeof(*ctx));
if (dctx != NULL && dctx->base.ccm_ctx.key != NULL)
dctx->base.ccm_ctx.key = &dctx->ks.ks;
return dctx;
}
static void sm4_ccm_freectx(void *vctx)
{
PROV_SM4_CCM_CTX *ctx = (PROV_SM4_CCM_CTX *)vctx;
OPENSSL_clear_free(ctx, sizeof(*ctx));
}
/* sm4128ccm functions */
IMPLEMENT_aead_cipher(sm4, ccm, CCM, AEAD_FLAGS, 128, 8, 96);
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