- applied patch from andreas, which allows certificate listing via stroke
[strongswan.git] / src / libcrypto / libblowfish / bf_skey.c
1 /* crypto/bf/bf_skey.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 #ifdef __KERNEL__
60 #include <linux/types.h>
61 #include <linux/string.h>
62 #else
63 #include <stdio.h>
64 #include <string.h>
65 #endif
66
67 #include "blowfish.h"
68 #include "bf_locl.h"
69 #include "bf_pi.h"
70
71 void BF_set_key(BF_KEY *key, int len, const unsigned char *data)
72 {
73 int i;
74 BF_LONG *p,ri,in[2];
75 const unsigned char *d,*end;
76
77
78 memcpy((char *)key,(const char *)&bf_init,sizeof(BF_KEY));
79 p=key->P;
80
81 if (len > ((BF_ROUNDS+2)*4)) len=(BF_ROUNDS+2)*4;
82
83 d=data;
84 end= &(data[len]);
85 for (i=0; i<(BF_ROUNDS+2); i++)
86 {
87 ri= *(d++);
88 if (d >= end) d=data;
89
90 ri<<=8;
91 ri|= *(d++);
92 if (d >= end) d=data;
93
94 ri<<=8;
95 ri|= *(d++);
96 if (d >= end) d=data;
97
98 ri<<=8;
99 ri|= *(d++);
100 if (d >= end) d=data;
101
102 p[i]^=ri;
103 }
104
105 in[0]=0L;
106 in[1]=0L;
107 for (i=0; i<(BF_ROUNDS+2); i+=2)
108 {
109 BF_encrypt(in,key);
110 p[i ]=in[0];
111 p[i+1]=in[1];
112 }
113
114 p=key->S;
115 for (i=0; i<4*256; i+=2)
116 {
117 BF_encrypt(in,key);
118 p[i ]=in[0];
119 p[i+1]=in[1];
120 }
121 }
122