1/*
2 * Copyright 2019-2021 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/*
11 * CAST low level APIs are deprecated for public use, but still ok for
12 * internal use.
13 */
14#include "internal/deprecated.h"
15
16/* Dispatch functions for cast cipher modes ecb, cbc, ofb, cfb */
17
18#include <openssl/proverr.h>
19#include "cipher_cast.h"
20#include "prov/implementations.h"
21#include "prov/providercommon.h"
22
23#define CAST5_FLAGS PROV_CIPHER_FLAG_VARIABLE_LENGTH
24
25static OSSL_FUNC_cipher_freectx_fn cast5_freectx;
26static OSSL_FUNC_cipher_dupctx_fn cast5_dupctx;
27
28static void cast5_freectx(void *vctx)
29{
30    PROV_CAST_CTX *ctx = (PROV_CAST_CTX *)vctx;
31
32    ossl_cipher_generic_reset_ctx((PROV_CIPHER_CTX *)vctx);
33    OPENSSL_clear_free(ctx,  sizeof(*ctx));
34}
35
36static void *cast5_dupctx(void *ctx)
37{
38    PROV_CAST_CTX *in = (PROV_CAST_CTX *)ctx;
39    PROV_CAST_CTX *ret;
40
41    if (!ossl_prov_is_running())
42        return NULL;
43
44    ret = OPENSSL_malloc(sizeof(*ret));
45    if (ret == NULL) {
46        ERR_raise(ERR_LIB_PROV, ERR_R_MALLOC_FAILURE);
47        return NULL;
48    }
49    *ret = *in;
50
51    return ret;
52}
53
54/* ossl_cast5128ecb_functions */
55IMPLEMENT_var_keylen_cipher(cast5, CAST, ecb, ECB, CAST5_FLAGS, 128, 64, 0, block)
56/* ossl_cast5128cbc_functions */
57IMPLEMENT_var_keylen_cipher(cast5, CAST, cbc, CBC, CAST5_FLAGS, 128, 64, 64, block)
58/* ossl_cast5128ofb64_functions */
59IMPLEMENT_var_keylen_cipher(cast5, CAST, ofb64, OFB, CAST5_FLAGS, 128, 8, 64, stream)
60/* ossl_cast5128cfb64_functions */
61IMPLEMENT_var_keylen_cipher(cast5, CAST, cfb64,  CFB, CAST5_FLAGS, 128, 8, 64, stream)
62