1/*
2 * Copyright 2019-2020 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 cast cipher modes ecb, cbc, ofb, cfb */
11
12#include "cipher_sm4.h"
13#include "prov/implementations.h"
14#include "prov/providercommon.h"
15
16static OSSL_FUNC_cipher_freectx_fn sm4_freectx;
17static OSSL_FUNC_cipher_dupctx_fn sm4_dupctx;
18
19static void sm4_freectx(void *vctx)
20{
21    PROV_SM4_CTX *ctx = (PROV_SM4_CTX *)vctx;
22
23    ossl_cipher_generic_reset_ctx((PROV_CIPHER_CTX *)vctx);
24    OPENSSL_clear_free(ctx,  sizeof(*ctx));
25}
26
27static void *sm4_dupctx(void *ctx)
28{
29    PROV_SM4_CTX *in = (PROV_SM4_CTX *)ctx;
30    PROV_SM4_CTX *ret;
31
32    if (!ossl_prov_is_running())
33        return NULL;
34
35    ret = OPENSSL_malloc(sizeof(*ret));
36    if (ret == NULL) {
37        ERR_raise(ERR_LIB_PROV, ERR_R_MALLOC_FAILURE);
38        return NULL;
39    }
40    in->base.hw->copyctx(&ret->base, &in->base);
41
42    return ret;
43}
44
45/* ossl_sm4128ecb_functions */
46IMPLEMENT_generic_cipher(sm4, SM4, ecb, ECB, 0, 128, 128, 0, block)
47/* ossl_sm4128cbc_functions */
48IMPLEMENT_generic_cipher(sm4, SM4, cbc, CBC, 0, 128, 128, 128, block)
49/* ossl_sm4128ctr_functions */
50IMPLEMENT_generic_cipher(sm4, SM4, ctr, CTR, 0, 128, 8, 128, stream)
51/* ossl_sm4128ofb128_functions */
52IMPLEMENT_generic_cipher(sm4, SM4, ofb128, OFB, 0, 128, 8, 128, stream)
53/* ossl_sm4128cfb128_functions */
54IMPLEMENT_generic_cipher(sm4, SM4, cfb128,  CFB, 0, 128, 8, 128, stream)
55