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
25 static OSSL_FUNC_cipher_freectx_fn cast5_freectx;
26 static OSSL_FUNC_cipher_dupctx_fn cast5_dupctx;
27
cast5_freectx(void * vctx)28 static 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
cast5_dupctx(void * ctx)36 static 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 return NULL;
47 *ret = *in;
48
49 return ret;
50 }
51
52 /* ossl_cast5128ecb_functions */
53 IMPLEMENT_var_keylen_cipher(cast5, CAST, ecb, ECB, CAST5_FLAGS, 128, 64, 0, block)
54 /* ossl_cast5128cbc_functions */
55 IMPLEMENT_var_keylen_cipher(cast5, CAST, cbc, CBC, CAST5_FLAGS, 128, 64, 64, block)
56 /* ossl_cast5128ofb64_functions */
57 IMPLEMENT_var_keylen_cipher(cast5, CAST, ofb64, OFB, CAST5_FLAGS, 128, 8, 64, stream)
58 /* ossl_cast5128cfb64_functions */
59 IMPLEMENT_var_keylen_cipher(cast5, CAST, cfb64, CFB, CAST5_FLAGS, 128, 8, 64, stream)
60
