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 Seed cipher modes ecb, cbc, ofb, cfb */
11
12 /*
13 * SEED low level APIs are deprecated for public use, but still ok for
14 * internal use.
15 */
16 #include "internal/deprecated.h"
17
18 #include "cipher_seed.h"
19 #include "prov/implementations.h"
20 #include "prov/providercommon.h"
21
22 static OSSL_FUNC_cipher_freectx_fn seed_freectx;
23 static OSSL_FUNC_cipher_dupctx_fn seed_dupctx;
24
seed_freectx(void * vctx)25 static void seed_freectx(void *vctx)
26 {
27 PROV_SEED_CTX *ctx = (PROV_SEED_CTX *)vctx;
28
29 ossl_cipher_generic_reset_ctx((PROV_CIPHER_CTX *)vctx);
30 OPENSSL_clear_free(ctx, sizeof(*ctx));
31 }
32
seed_dupctx(void * ctx)33 static void *seed_dupctx(void *ctx)
34 {
35 PROV_SEED_CTX *in = (PROV_SEED_CTX *)ctx;
36 PROV_SEED_CTX *ret;
37
38 if (!ossl_prov_is_running())
39 return NULL;
40
41 ret = OPENSSL_malloc(sizeof(*ret));
42 if (ret == NULL)
43 return NULL;
44 *ret = *in;
45
46 return ret;
47 }
48
49 /* ossl_seed128ecb_functions */
50 IMPLEMENT_generic_cipher(seed, SEED, ecb, ECB, 0, 128, 128, 0, block)
51 /* ossl_seed128cbc_functions */
52 IMPLEMENT_generic_cipher(seed, SEED, cbc, CBC, 0, 128, 128, 128, block)
53 /* ossl_seed128ofb128_functions */
54 IMPLEMENT_generic_cipher(seed, SEED, ofb128, OFB, 0, 128, 8, 128, stream)
55 /* ossl_seed128cfb128_functions */
56 IMPLEMENT_generic_cipher(seed, SEED, cfb128, CFB, 0, 128, 8, 128, stream)
57
