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 /* Dispatch functions for Blowfish cipher modes ecb, cbc, ofb, cfb */
11
12 /*
13 * BF low level APIs are deprecated for public use, but still ok for internal
14 * use.
15 */
16 #include "internal/deprecated.h"
17
18 #include "cipher_blowfish.h"
19 #include "prov/implementations.h"
20 #include "prov/providercommon.h"
21
22 #define BF_FLAGS PROV_CIPHER_FLAG_VARIABLE_LENGTH
23
24 static OSSL_FUNC_cipher_freectx_fn blowfish_freectx;
25 static OSSL_FUNC_cipher_dupctx_fn blowfish_dupctx;
26
blowfish_freectx(void * vctx)27 static void blowfish_freectx(void *vctx)
28 {
29 PROV_BLOWFISH_CTX *ctx = (PROV_BLOWFISH_CTX *)vctx;
30
31 ossl_cipher_generic_reset_ctx((PROV_CIPHER_CTX *)vctx);
32 OPENSSL_clear_free(ctx, sizeof(*ctx));
33 }
34
blowfish_dupctx(void * ctx)35 static void *blowfish_dupctx(void *ctx)
36 {
37 PROV_BLOWFISH_CTX *in = (PROV_BLOWFISH_CTX *)ctx;
38 PROV_BLOWFISH_CTX *ret;
39
40 if (!ossl_prov_is_running())
41 return NULL;
42
43 ret = OPENSSL_malloc(sizeof(*ret));
44 if (ret == NULL)
45 return NULL;
46 *ret = *in;
47
48 return ret;
49 }
50
51 /* bf_ecb_functions */
52 IMPLEMENT_var_keylen_cipher(blowfish, BLOWFISH, ecb, ECB, BF_FLAGS, 128, 64, 0, block)
53 /* bf_cbc_functions */
54 IMPLEMENT_var_keylen_cipher(blowfish, BLOWFISH, cbc, CBC, BF_FLAGS, 128, 64, 64, block)
55 /* bf_ofb_functions */
56 IMPLEMENT_var_keylen_cipher(blowfish, BLOWFISH, ofb64, OFB, BF_FLAGS, 128, 8, 64, stream)
57 /* bf_cfb_functions */
58 IMPLEMENT_var_keylen_cipher(blowfish, BLOWFISH, cfb64, CFB, BF_FLAGS, 128, 8, 64, stream)
59
