xref: /openssl/crypto/evp/e_bf.c (revision 38fc02a7)
1 /*
2  * Copyright 1995-2021 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  * BF low level APIs are deprecated for public use, but still ok for internal
12  * use.
13  */
14 #include "internal/deprecated.h"
15 
16 #include <stdio.h>
17 #include "internal/cryptlib.h"
18 #ifndef OPENSSL_NO_BF
19 # include <openssl/evp.h>
20 # include "crypto/evp.h"
21 # include <openssl/objects.h>
22 # include <openssl/blowfish.h>
23 # include "evp_local.h"
24 
25 static int bf_init_key(EVP_CIPHER_CTX *ctx, const unsigned char *key,
26                        const unsigned char *iv, int enc);
27 
28 typedef struct {
29     BF_KEY ks;
30 } EVP_BF_KEY;
31 
32 # define data(ctx)       EVP_C_DATA(EVP_BF_KEY,ctx)
33 
34 IMPLEMENT_BLOCK_CIPHER(bf, ks, BF, EVP_BF_KEY, NID_bf, 8, 16, 8, 64,
35                        EVP_CIPH_VARIABLE_LENGTH, bf_init_key, NULL,
36                        EVP_CIPHER_set_asn1_iv, EVP_CIPHER_get_asn1_iv, NULL)
37 
bf_init_key(EVP_CIPHER_CTX * ctx,const unsigned char * key,const unsigned char * iv,int enc)38 static int bf_init_key(EVP_CIPHER_CTX *ctx, const unsigned char *key,
39                        const unsigned char *iv, int enc)
40 {
41     int len = EVP_CIPHER_CTX_get_key_length(ctx);
42 
43     if (len < 0)
44         return 0;
45     BF_set_key(&data(ctx)->ks, len, key);
46     return 1;
47 }
48 
49 #endif
50