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-rw-r--r--src/lib/libcrypto/des/str2key.c160
1 files changed, 78 insertions, 82 deletions
diff --git a/src/lib/libcrypto/des/str2key.c b/src/lib/libcrypto/des/str2key.c
index 316e803927..c9bd9aad1b 100644
--- a/src/lib/libcrypto/des/str2key.c
+++ b/src/lib/libcrypto/des/str2key.c
@@ -1,25 +1,25 @@
1/* $OpenBSD: str2key.c,v 1.11 2022/11/26 16:08:51 tb Exp $ */ 1/* $OpenBSD: str2key.c,v 1.12 2023/07/08 07:11:07 beck Exp $ */
2/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com) 2/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
3 * All rights reserved. 3 * All rights reserved.
4 * 4 *
5 * This package is an SSL implementation written 5 * This package is an SSL implementation written
6 * by Eric Young (eay@cryptsoft.com). 6 * by Eric Young (eay@cryptsoft.com).
7 * The implementation was written so as to conform with Netscapes SSL. 7 * The implementation was written so as to conform with Netscapes SSL.
8 * 8 *
9 * This library is free for commercial and non-commercial use as long as 9 * This library is free for commercial and non-commercial use as long as
10 * the following conditions are aheared to. The following conditions 10 * the following conditions are aheared to. The following conditions
11 * apply to all code found in this distribution, be it the RC4, RSA, 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 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 13 * included with this distribution is covered by the same copyright terms
14 * except that the holder is Tim Hudson (tjh@cryptsoft.com). 14 * except that the holder is Tim Hudson (tjh@cryptsoft.com).
15 * 15 *
16 * Copyright remains Eric Young's, and as such any Copyright notices in 16 * Copyright remains Eric Young's, and as such any Copyright notices in
17 * the code are not to be removed. 17 * the code are not to be removed.
18 * If this package is used in a product, Eric Young should be given attribution 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. 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 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. 21 * in documentation (online or textual) provided with the package.
22 * 22 *
23 * Redistribution and use in source and binary forms, with or without 23 * Redistribution and use in source and binary forms, with or without
24 * modification, are permitted provided that the following conditions 24 * modification, are permitted provided that the following conditions
25 * are met: 25 * are met:
@@ -34,10 +34,10 @@
34 * Eric Young (eay@cryptsoft.com)" 34 * Eric Young (eay@cryptsoft.com)"
35 * The word 'cryptographic' can be left out if the rouines from the library 35 * The word 'cryptographic' can be left out if the rouines from the library
36 * being used are not cryptographic related :-). 36 * being used are not cryptographic related :-).
37 * 4. If you include any Windows specific code (or a derivative thereof) from 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: 38 * the apps directory (application code) you must include an acknowledgement:
39 * "This product includes software written by Tim Hudson (tjh@cryptsoft.com)" 39 * "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
40 * 40 *
41 * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND 41 * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
42 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 42 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
43 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 43 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
@@ -49,7 +49,7 @@
49 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 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 50 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
51 * SUCH DAMAGE. 51 * SUCH DAMAGE.
52 * 52 *
53 * The licence and distribution terms for any publically available version or 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 54 * derivative of this code cannot be changed. i.e. this code cannot simply be
55 * copied and put under another distribution licence 55 * copied and put under another distribution licence
@@ -59,116 +59,112 @@
59#include <openssl/crypto.h> 59#include <openssl/crypto.h>
60#include "des_local.h" 60#include "des_local.h"
61 61
62void DES_string_to_key(const char *str, DES_cblock *key) 62void
63 { 63DES_string_to_key(const char *str, DES_cblock *key)
64{
64 DES_key_schedule ks; 65 DES_key_schedule ks;
65 int i,length; 66 int i, length;
66 unsigned char j; 67 unsigned char j;
67 68
68 memset(key,0,8); 69 memset(key, 0, 8);
69 length=strlen(str); 70 length = strlen(str);
70#ifdef OLD_STR_TO_KEY 71#ifdef OLD_STR_TO_KEY
71 for (i=0; i<length; i++) 72 for (i = 0; i < length; i++)
72 (*key)[i%8]^=(str[i]<<1); 73 (*key)[i % 8] ^= (str[i] << 1);
73#else /* MIT COMPATIBLE */ 74#else /* MIT COMPATIBLE */
74 for (i=0; i<length; i++) 75 for (i = 0; i < length; i++)
75 { 76 {
76 j=str[i]; 77 j = str[i];
77 if ((i%16) < 8) 78 if ((i % 16) < 8)
78 (*key)[i%8]^=(j<<1); 79 (*key)[i % 8] ^= (j << 1);
79 else 80 else {
80 {
81 /* Reverse the bit order 05/05/92 eay */ 81 /* Reverse the bit order 05/05/92 eay */
82 j=((j<<4)&0xf0)|((j>>4)&0x0f); 82 j = ((j << 4) & 0xf0)|((j >> 4) & 0x0f);
83 j=((j<<2)&0xcc)|((j>>2)&0x33); 83 j = ((j << 2) & 0xcc)|((j >> 2) & 0x33);
84 j=((j<<1)&0xaa)|((j>>1)&0x55); 84 j = ((j << 1) & 0xaa)|((j >> 1) & 0x55);
85 (*key)[7-(i%8)]^=j; 85 (*key)[7 - (i % 8)] ^= j;
86 }
87 } 86 }
87 }
88#endif 88#endif
89 DES_set_odd_parity(key); 89 DES_set_odd_parity(key);
90#ifdef EXPERIMENTAL_STR_TO_STRONG_KEY 90#ifdef EXPERIMENTAL_STR_TO_STRONG_KEY
91 if(DES_is_weak_key(key)) 91 if (DES_is_weak_key(key))
92 (*key)[7] ^= 0xF0; 92 (*key)[7] ^= 0xF0;
93 DES_set_key(key,&ks); 93 DES_set_key(key, &ks);
94#else 94#else
95 DES_set_key_unchecked(key,&ks); 95 DES_set_key_unchecked(key, &ks);
96#endif 96#endif
97 DES_cbc_cksum((const unsigned char*)str,key,length,&ks,key); 97 DES_cbc_cksum((const unsigned char *)str, key, length, &ks, key);
98 explicit_bzero(&ks,sizeof(ks)); 98 explicit_bzero(&ks, sizeof(ks));
99 DES_set_odd_parity(key); 99 DES_set_odd_parity(key);
100 } 100}
101 101
102void DES_string_to_2keys(const char *str, DES_cblock *key1, DES_cblock *key2) 102void
103 { 103DES_string_to_2keys(const char *str, DES_cblock *key1, DES_cblock *key2)
104{
104 DES_key_schedule ks; 105 DES_key_schedule ks;
105 int i,length; 106 int i, length;
106 unsigned char j; 107 unsigned char j;
107 108
108 memset(key1,0,8); 109 memset(key1, 0, 8);
109 memset(key2,0,8); 110 memset(key2, 0, 8);
110 length=strlen(str); 111 length = strlen(str);
111#ifdef OLD_STR_TO_KEY 112#ifdef OLD_STR_TO_KEY
112 if (length <= 8) 113 if (length <= 8) {
114 for (i = 0; i < length; i++)
113 { 115 {
114 for (i=0; i<length; i++) 116 (*key2)[i] = (*key1)[i] = (str[i] << 1);
115 {
116 (*key2)[i]=(*key1)[i]=(str[i]<<1);
117 }
118 } 117 }
119 else 118 } else {
119 for (i = 0; i < length; i++)
120 { 120 {
121 for (i=0; i<length; i++) 121 if ((i/8) & 1)
122 { 122 (*key2)[i % 8] ^= (str[i] << 1);
123 if ((i/8)&1)
124 (*key2)[i%8]^=(str[i]<<1);
125 else 123 else
126 (*key1)[i%8]^=(str[i]<<1); 124 (*key1)[i % 8] ^= (str[i] << 1);
127 }
128 } 125 }
126 }
129#else /* MIT COMPATIBLE */ 127#else /* MIT COMPATIBLE */
130 for (i=0; i<length; i++) 128 for (i = 0; i < length; i++)
131 { 129 {
132 j=str[i]; 130 j = str[i];
133 if ((i%32) < 16) 131 if ((i % 32) < 16) {
134 { 132 if ((i % 16) < 8)
135 if ((i%16) < 8) 133 (*key1)[i % 8] ^= (j << 1);
136 (*key1)[i%8]^=(j<<1);
137 else 134 else
138 (*key2)[i%8]^=(j<<1); 135 (*key2)[i % 8] ^= (j << 1);
139 } 136 } else {
140 else 137 j = ((j << 4) & 0xf0)|((j >> 4) & 0x0f);
141 { 138 j = ((j << 2) & 0xcc)|((j >> 2) & 0x33);
142 j=((j<<4)&0xf0)|((j>>4)&0x0f); 139 j = ((j << 1) & 0xaa)|((j >> 1) & 0x55);
143 j=((j<<2)&0xcc)|((j>>2)&0x33); 140 if ((i % 16) < 8)
144 j=((j<<1)&0xaa)|((j>>1)&0x55); 141 (*key1)[7 - (i % 8)] ^= j;
145 if ((i%16) < 8)
146 (*key1)[7-(i%8)]^=j;
147 else 142 else
148 (*key2)[7-(i%8)]^=j; 143 (*key2)[7 - (i % 8)] ^= j;
149 }
150 } 144 }
151 if (length <= 8) memcpy(key2,key1,8); 145 }
146 if (length <= 8)
147 memcpy(key2, key1, 8);
152#endif 148#endif
153 DES_set_odd_parity(key1); 149 DES_set_odd_parity(key1);
154 DES_set_odd_parity(key2); 150 DES_set_odd_parity(key2);
155#ifdef EXPERIMENTAL_STR_TO_STRONG_KEY 151#ifdef EXPERIMENTAL_STR_TO_STRONG_KEY
156 if(DES_is_weak_key(key1)) 152 if (DES_is_weak_key(key1))
157 (*key1)[7] ^= 0xF0; 153 (*key1)[7] ^= 0xF0;
158 DES_set_key(key1,&ks); 154 DES_set_key(key1, &ks);
159#else 155#else
160 DES_set_key_unchecked(key1,&ks); 156 DES_set_key_unchecked(key1, &ks);
161#endif 157#endif
162 DES_cbc_cksum((const unsigned char*)str,key1,length,&ks,key1); 158 DES_cbc_cksum((const unsigned char *)str, key1, length, &ks, key1);
163#ifdef EXPERIMENTAL_STR_TO_STRONG_KEY 159#ifdef EXPERIMENTAL_STR_TO_STRONG_KEY
164 if(DES_is_weak_key(key2)) 160 if (DES_is_weak_key(key2))
165 (*key2)[7] ^= 0xF0; 161 (*key2)[7] ^= 0xF0;
166 DES_set_key(key2,&ks); 162 DES_set_key(key2, &ks);
167#else 163#else
168 DES_set_key_unchecked(key2,&ks); 164 DES_set_key_unchecked(key2, &ks);
169#endif 165#endif
170 DES_cbc_cksum((const unsigned char*)str,key2,length,&ks,key2); 166 DES_cbc_cksum((const unsigned char *)str, key2, length, &ks, key2);
171 explicit_bzero(&ks,sizeof(ks)); 167 explicit_bzero(&ks, sizeof(ks));
172 DES_set_odd_parity(key1); 168 DES_set_odd_parity(key1);
173 DES_set_odd_parity(key2); 169 DES_set_odd_parity(key2);
174 } 170}