1/*
2 * Copyright 2021 The OpenSSL Project Authors. All Rights Reserved.
3 *
4 * Licensed under the Apache License 2.0 (the "License").  You may not use
5 * this file except in compliance with the License.  You can obtain a copy
6 * in the file LICENSE in the source distribution or at
7 * https://www.openssl.org/source/license.html
8 */
9
10/* Dispatch functions for SM4 CCM mode */
11
12#include "cipher_sm4_ccm.h"
13#include "prov/implementations.h"
14#include "prov/providercommon.h"
15
16static OSSL_FUNC_cipher_freectx_fn sm4_ccm_freectx;
17
18static void *sm4_ccm_newctx(void *provctx, size_t keybits)
19{
20    PROV_SM4_CCM_CTX *ctx;
21
22    if (!ossl_prov_is_running())
23        return NULL;
24
25    ctx = OPENSSL_zalloc(sizeof(*ctx));
26    if (ctx != NULL)
27        ossl_ccm_initctx(&ctx->base, keybits, ossl_prov_sm4_hw_ccm(keybits));
28    return ctx;
29}
30
31static void sm4_ccm_freectx(void *vctx)
32{
33    PROV_SM4_CCM_CTX *ctx = (PROV_SM4_CCM_CTX *)vctx;
34
35    OPENSSL_clear_free(ctx,  sizeof(*ctx));
36}
37
38/* sm4128ccm functions */
39IMPLEMENT_aead_cipher(sm4, ccm, CCM, AEAD_FLAGS, 128, 8, 96);
40