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authorryker <>1998-10-05 20:13:16 +0000
committerryker <>1998-10-05 20:13:16 +0000
commit9e43e2ac1373d5be5c6500c1bc3b1dd6ee9584b4 (patch)
tree51ff319f3510104698e541954d10ad98f9125f36 /src/lib/libcrypto/evp/e_ofb_i.c
parent9e77c62555877f9a64805c49d0dcd7dbfbb40f4e (diff)
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Import of SSLeay-0.9.0b with RSA and IDEA stubbed + OpenBSD build
functionality for shared libs. Note that routines such as sslv2_init and friends that use RSA will not work due to lack of RSA in this library. Needs documentation and help from ports for easy upgrade to full functionality where legally possible.
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1/* crypto/evp/e_ofb_i.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#ifndef NO_IDEA
60
61#include <stdio.h>
62#include "cryptlib.h"
63#include "evp.h"
64#include "objects.h"
65
66#ifndef NOPROTO
67static void idea_ofb_init_key(EVP_CIPHER_CTX *ctx, unsigned char *key,
68 unsigned char *iv,int enc);
69static void idea_ofb_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out,
70 unsigned char *in, unsigned int inl);
71#else
72static void idea_ofb_init_key();
73static void idea_ofb_cipher();
74#endif
75
76static EVP_CIPHER i_ofb_cipher=
77 {
78 NID_idea_ofb64,
79 1,IDEA_KEY_LENGTH,IDEA_BLOCK,
80 idea_ofb_init_key,
81 idea_ofb_cipher,
82 NULL,
83 sizeof(EVP_CIPHER_CTX)-sizeof((((EVP_CIPHER_CTX *)NULL)->c))+
84 sizeof((((EVP_CIPHER_CTX *)NULL)->c.idea_ks)),
85 EVP_CIPHER_set_asn1_iv,
86 EVP_CIPHER_get_asn1_iv,
87 };
88
89EVP_CIPHER *EVP_idea_ofb()
90 {
91 return(&i_ofb_cipher);
92 }
93
94static void idea_ofb_init_key(ctx,key,iv,enc)
95EVP_CIPHER_CTX *ctx;
96unsigned char *key;
97unsigned char *iv;
98int enc;
99 {
100 ctx->num=0;
101
102 if (iv != NULL)
103 memcpy(&(ctx->oiv[0]),iv,8);
104 memcpy(&(ctx->iv[0]),&(ctx->oiv[0]),8);
105 if (key != NULL)
106 idea_set_encrypt_key(key,&(ctx->c.idea_ks));
107 }
108
109static void idea_ofb_cipher(ctx,out,in,inl)
110EVP_CIPHER_CTX *ctx;
111unsigned char *out;
112unsigned char *in;
113unsigned int inl;
114 {
115 idea_ofb64_encrypt(
116 in,out,(long)inl,
117 &(ctx->c.idea_ks),&(ctx->iv[0]),
118 &ctx->num);
119 }
120
121#endif