summaryrefslogtreecommitdiff
path: root/src/lib/libcrypto/idea/i_skey.c
diff options
context:
space:
mode:
Diffstat (limited to 'src/lib/libcrypto/idea/i_skey.c')
-rw-r--r--src/lib/libcrypto/idea/i_skey.c164
1 files changed, 0 insertions, 164 deletions
diff --git a/src/lib/libcrypto/idea/i_skey.c b/src/lib/libcrypto/idea/i_skey.c
deleted file mode 100644
index afb830964d..0000000000
--- a/src/lib/libcrypto/idea/i_skey.c
+++ /dev/null
@@ -1,164 +0,0 @@
1/* crypto/idea/i_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#include <openssl/crypto.h>
60#include <openssl/idea.h>
61#include "idea_lcl.h"
62
63static IDEA_INT inverse(unsigned int xin);
64void idea_set_encrypt_key(const unsigned char *key, IDEA_KEY_SCHEDULE *ks)
65#ifdef OPENSSL_FIPS
66 {
67 fips_cipher_abort(IDEA);
68 private_idea_set_encrypt_key(key, ks);
69 }
70void private_idea_set_encrypt_key(const unsigned char *key, IDEA_KEY_SCHEDULE *ks)
71#endif
72 {
73 int i;
74 register IDEA_INT *kt,*kf,r0,r1,r2;
75
76 kt= &(ks->data[0][0]);
77 n2s(key,kt[0]); n2s(key,kt[1]); n2s(key,kt[2]); n2s(key,kt[3]);
78 n2s(key,kt[4]); n2s(key,kt[5]); n2s(key,kt[6]); n2s(key,kt[7]);
79
80 kf=kt;
81 kt+=8;
82 for (i=0; i<6; i++)
83 {
84 r2= kf[1];
85 r1= kf[2];
86 *(kt++)= ((r2<<9) | (r1>>7))&0xffff;
87 r0= kf[3];
88 *(kt++)= ((r1<<9) | (r0>>7))&0xffff;
89 r1= kf[4];
90 *(kt++)= ((r0<<9) | (r1>>7))&0xffff;
91 r0= kf[5];
92 *(kt++)= ((r1<<9) | (r0>>7))&0xffff;
93 r1= kf[6];
94 *(kt++)= ((r0<<9) | (r1>>7))&0xffff;
95 r0= kf[7];
96 *(kt++)= ((r1<<9) | (r0>>7))&0xffff;
97 r1= kf[0];
98 if (i >= 5) break;
99 *(kt++)= ((r0<<9) | (r1>>7))&0xffff;
100 *(kt++)= ((r1<<9) | (r2>>7))&0xffff;
101 kf+=8;
102 }
103 }
104
105void idea_set_decrypt_key(IDEA_KEY_SCHEDULE *ek, IDEA_KEY_SCHEDULE *dk)
106 {
107 int r;
108 register IDEA_INT *fp,*tp,t;
109
110 tp= &(dk->data[0][0]);
111 fp= &(ek->data[8][0]);
112 for (r=0; r<9; r++)
113 {
114 *(tp++)=inverse(fp[0]);
115 *(tp++)=((int)(0x10000L-fp[2])&0xffff);
116 *(tp++)=((int)(0x10000L-fp[1])&0xffff);
117 *(tp++)=inverse(fp[3]);
118 if (r == 8) break;
119 fp-=6;
120 *(tp++)=fp[4];
121 *(tp++)=fp[5];
122 }
123
124 tp= &(dk->data[0][0]);
125 t=tp[1];
126 tp[1]=tp[2];
127 tp[2]=t;
128
129 t=tp[49];
130 tp[49]=tp[50];
131 tp[50]=t;
132 }
133
134/* taken directly from the 'paper' I'll have a look at it later */
135static IDEA_INT inverse(unsigned int xin)
136 {
137 long n1,n2,q,r,b1,b2,t;
138
139 if (xin == 0)
140 b2=0;
141 else
142 {
143 n1=0x10001;
144 n2=xin;
145 b2=1;
146 b1=0;
147
148 do {
149 r=(n1%n2);
150 q=(n1-r)/n2;
151 if (r == 0)
152 { if (b2 < 0) b2=0x10001+b2; }
153 else
154 {
155 n1=n2;
156 n2=r;
157 t=b2;
158 b2=b1-q*b2;
159 b1=t;
160 }
161 } while (r != 0);
162 }
163 return((IDEA_INT)b2);
164 }
generated by cgit v1.2.3-55-g6feb (git 2.39.1) at 2025-03-21 16:30:21 +0000