summaryrefslogtreecommitdiff
path: root/src/lib/libcrypto/evp/e_ofb_3d.c
diff options
context:
space:
mode:
Diffstat (limited to 'src/lib/libcrypto/evp/e_ofb_3d.c')
-rw-r--r--src/lib/libcrypto/evp/e_ofb_3d.c165
1 files changed, 165 insertions, 0 deletions
diff --git a/src/lib/libcrypto/evp/e_ofb_3d.c b/src/lib/libcrypto/evp/e_ofb_3d.c
new file mode 100644
index 0000000000..c3add18e93
--- /dev/null
+++ b/src/lib/libcrypto/evp/e_ofb_3d.c
@@ -0,0 +1,165 @@
1/* crypto/evp/e_ofb_3d.c */
2/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
3 * All rights reserved.
4 *
5 * This package is an SSL implementation written
6 * by Eric Young (eay@cryptsoft.com).
7 * The implementation was written so as to conform with Netscapes SSL.
8 *
9 * This library is free for commercial and non-commercial use as long as
10 * the following conditions are aheared to. The following conditions
11 * apply to all code found in this distribution, be it the RC4, RSA,
12 * lhash, DES, etc., code; not just the SSL code. The SSL documentation
13 * included with this distribution is covered by the same copyright terms
14 * except that the holder is Tim Hudson (tjh@cryptsoft.com).
15 *
16 * Copyright remains Eric Young's, and as such any Copyright notices in
17 * the code are not to be removed.
18 * If this package is used in a product, Eric Young should be given attribution
19 * as the author of the parts of the library used.
20 * This can be in the form of a textual message at program startup or
21 * in documentation (online or textual) provided with the package.
22 *
23 * Redistribution and use in source and binary forms, with or without
24 * modification, are permitted provided that the following conditions
25 * are met:
26 * 1. Redistributions of source code must retain the copyright
27 * notice, this list of conditions and the following disclaimer.
28 * 2. Redistributions in binary form must reproduce the above copyright
29 * notice, this list of conditions and the following disclaimer in the
30 * documentation and/or other materials provided with the distribution.
31 * 3. All advertising materials mentioning features or use of this software
32 * must display the following acknowledgement:
33 * "This product includes cryptographic software written by
34 * Eric Young (eay@cryptsoft.com)"
35 * The word 'cryptographic' can be left out if the rouines from the library
36 * being used are not cryptographic related :-).
37 * 4. If you include any Windows specific code (or a derivative thereof) from
38 * the apps directory (application code) you must include an acknowledgement:
39 * "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
40 *
41 * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
42 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
43 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
44 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
45 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
46 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
47 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
48 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
49 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
50 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
51 * SUCH DAMAGE.
52 *
53 * The licence and distribution terms for any publically available version or
54 * derivative of this code cannot be changed. i.e. this code cannot simply be
55 * copied and put under another distribution licence
56 * [including the GNU Public Licence.]
57 */
58
59#include <stdio.h>
60#include "cryptlib.h"
61#include "evp.h"
62#include "objects.h"
63
64#ifndef NOPROTO
65static void des_ede_ofb_init_key(EVP_CIPHER_CTX *ctx, unsigned char *key,
66 unsigned char *iv,int enc);
67static void des_ede3_ofb_init_key(EVP_CIPHER_CTX *ctx, unsigned char *key,
68 unsigned char *iv,int enc);
69static void des_ede_ofb_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out,
70 unsigned char *in, unsigned int inl);
71#else
72static void des_ede_ofb_init_key();
73static void des_ede3_ofb_init_key();
74static void des_ede_ofb_cipher();
75#endif
76
77static EVP_CIPHER d_ede_ofb_cipher2=
78 {
79 NID_des_ede_ofb64,
80 1,16,8,
81 des_ede_ofb_init_key,
82 des_ede_ofb_cipher,
83 NULL,
84 sizeof(EVP_CIPHER_CTX)-sizeof((((EVP_CIPHER_CTX *)NULL)->c))+
85 sizeof((((EVP_CIPHER_CTX *)NULL)->c.des_ede)),
86 EVP_CIPHER_set_asn1_iv,
87 EVP_CIPHER_get_asn1_iv,
88 };
89
90static EVP_CIPHER d_ede3_ofb_cipher3=
91 {
92 NID_des_ede3_ofb64,
93 1,24,8,
94 des_ede3_ofb_init_key,
95 des_ede_ofb_cipher,
96 NULL,
97 sizeof(EVP_CIPHER_CTX)-sizeof((((EVP_CIPHER_CTX *)NULL)->c))+
98 sizeof((((EVP_CIPHER_CTX *)NULL)->c.des_ede)),
99 EVP_CIPHER_set_asn1_iv,
100 EVP_CIPHER_get_asn1_iv,
101 };
102
103EVP_CIPHER *EVP_des_ede_ofb()
104 {
105 return(&d_ede_ofb_cipher2);
106 }
107
108EVP_CIPHER *EVP_des_ede3_ofb()
109 {
110 return(&d_ede3_ofb_cipher3);
111 }
112
113static void des_ede_ofb_init_key(ctx,key,iv,enc)
114EVP_CIPHER_CTX *ctx;
115unsigned char *key;
116unsigned char *iv;
117int enc;
118 {
119 ctx->num=0;
120
121 if (iv != NULL)
122 memcpy(&(ctx->oiv[0]),iv,8);
123 memcpy(&(ctx->iv[0]),&(ctx->oiv[0]),8);
124 if (key != NULL)
125 {
126 des_set_key((des_cblock *)key,ctx->c.des_ede.ks1);
127 des_set_key((des_cblock *)&(key[8]),ctx->c.des_ede.ks2);
128 memcpy( (char *)ctx->c.des_ede.ks3,
129 (char *)ctx->c.des_ede.ks1,
130 sizeof(ctx->c.des_ede.ks1));
131 }
132 }
133
134static void des_ede3_ofb_init_key(ctx,key,iv,enc)
135EVP_CIPHER_CTX *ctx;
136unsigned char *key;
137unsigned char *iv;
138int enc;
139 {
140 ctx->num=0;
141
142 if (iv != NULL)
143 memcpy(&(ctx->oiv[0]),iv,8);
144 memcpy(&(ctx->iv[0]),&(ctx->oiv[0]),8);
145 if (key != NULL)
146 {
147 des_set_key((des_cblock *)key,ctx->c.des_ede.ks1);
148 des_set_key((des_cblock *)&(key[8]),ctx->c.des_ede.ks2);
149 des_set_key((des_cblock *)&(key[16]),ctx->c.des_ede.ks3);
150 }
151 }
152
153static void des_ede_ofb_cipher(ctx,out,in,inl)
154EVP_CIPHER_CTX *ctx;
155unsigned char *out;
156unsigned char *in;
157unsigned int inl;
158 {
159 des_ede3_ofb64_encrypt(
160 in,out,
161 (long)inl,
162 ctx->c.des_ede.ks1, ctx->c.des_ede.ks2, ctx->c.des_ede.ks3,
163 (des_cblock *)&(ctx->iv[0]),
164 &ctx->num);
165 }
generated by cgit v1.2.3-55-g6feb (git 2.39.1) at 2025-03-21 23:34:48 +0000