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authorryker <>1998-10-05 20:13:14 +0000
committerryker <>1998-10-05 20:13:14 +0000
commitaeeae06a79815dc190061534d47236cec09f9e32 (patch)
tree851692b9c2f9c04f077666855641900f19fdb217 /src/lib/libcrypto/des/cbc_enc.c
parenta4f79641824cbf9f60ca9d1168d1fcc46717a82a (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.
Diffstat (limited to 'src/lib/libcrypto/des/cbc_enc.c')
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diff --git a/src/lib/libcrypto/des/cbc_enc.c b/src/lib/libcrypto/des/cbc_enc.c
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1/* crypto/des/cbc_enc.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 "des_locl.h"
60
61void des_cbc_encrypt(input, output, length, schedule, ivec, enc)
62des_cblock (*input);
63des_cblock (*output);
64long length;
65des_key_schedule schedule;
66des_cblock (*ivec);
67int enc;
68 {
69 register DES_LONG tin0,tin1;
70 register DES_LONG tout0,tout1,xor0,xor1;
71 register unsigned char *in,*out;
72 register long l=length;
73 DES_LONG tin[2];
74 unsigned char *iv;
75
76 in=(unsigned char *)input;
77 out=(unsigned char *)output;
78 iv=(unsigned char *)ivec;
79
80 if (enc)
81 {
82 c2l(iv,tout0);
83 c2l(iv,tout1);
84 for (l-=8; l>=0; l-=8)
85 {
86 c2l(in,tin0);
87 c2l(in,tin1);
88 tin0^=tout0; tin[0]=tin0;
89 tin1^=tout1; tin[1]=tin1;
90 des_encrypt((DES_LONG *)tin,schedule,DES_ENCRYPT);
91 tout0=tin[0]; l2c(tout0,out);
92 tout1=tin[1]; l2c(tout1,out);
93 }
94 if (l != -8)
95 {
96 c2ln(in,tin0,tin1,l+8);
97 tin0^=tout0; tin[0]=tin0;
98 tin1^=tout1; tin[1]=tin1;
99 des_encrypt((DES_LONG *)tin,schedule,DES_ENCRYPT);
100 tout0=tin[0]; l2c(tout0,out);
101 tout1=tin[1]; l2c(tout1,out);
102 }
103 }
104 else
105 {
106 c2l(iv,xor0);
107 c2l(iv,xor1);
108 for (l-=8; l>=0; l-=8)
109 {
110 c2l(in,tin0); tin[0]=tin0;
111 c2l(in,tin1); tin[1]=tin1;
112 des_encrypt((DES_LONG *)tin,schedule,DES_DECRYPT);
113 tout0=tin[0]^xor0;
114 tout1=tin[1]^xor1;
115 l2c(tout0,out);
116 l2c(tout1,out);
117 xor0=tin0;
118 xor1=tin1;
119 }
120 if (l != -8)
121 {
122 c2l(in,tin0); tin[0]=tin0;
123 c2l(in,tin1); tin[1]=tin1;
124 des_encrypt((DES_LONG *)tin,schedule,DES_DECRYPT);
125 tout0=tin[0]^xor0;
126 tout1=tin[1]^xor1;
127 l2cn(tout0,tout1,out,l+8);
128 /* xor0=tin0;
129 xor1=tin1; */
130 }
131 }
132 tin0=tin1=tout0=tout1=xor0=xor1=0;
133 tin[0]=tin[1]=0;
134 }
135