GCC Code Coverage Report
Directory: ./ Exec Total Coverage
File: lib/libcrypto/des/str2key.c Lines: 0 38 0.0 %
Date: 2017-11-07 Branches: 0 10 0.0 %

Line Branch Exec Source
1
/* $OpenBSD: str2key.c,v 1.10 2015/09/10 15:56:25 jsing Exp $ */
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 "des_locl.h"
61
62
void DES_string_to_key(const char *str, DES_cblock *key)
63
	{
64
	DES_key_schedule ks;
65
	int i,length;
66
	unsigned char j;
67
68
	memset(key,0,8);
69
	length=strlen(str);
70
#ifdef OLD_STR_TO_KEY
71
	for (i=0; i<length; i++)
72
		(*key)[i%8]^=(str[i]<<1);
73
#else /* MIT COMPATIBLE */
74
	for (i=0; i<length; i++)
75
		{
76
		j=str[i];
77
		if ((i%16) < 8)
78
			(*key)[i%8]^=(j<<1);
79
		else
80
			{
81
			/* Reverse the bit order 05/05/92 eay */
82
			j=((j<<4)&0xf0)|((j>>4)&0x0f);
83
			j=((j<<2)&0xcc)|((j>>2)&0x33);
84
			j=((j<<1)&0xaa)|((j>>1)&0x55);
85
			(*key)[7-(i%8)]^=j;
86
			}
87
		}
88
#endif
89
	DES_set_odd_parity(key);
90
#ifdef EXPERIMENTAL_STR_TO_STRONG_KEY
91
	if(DES_is_weak_key(key))
92
	    (*key)[7] ^= 0xF0;
93
	DES_set_key(key,&ks);
94
#else
95
	DES_set_key_unchecked(key,&ks);
96
#endif
97
	DES_cbc_cksum((const unsigned char*)str,key,length,&ks,key);
98
	explicit_bzero(&ks,sizeof(ks));
99
	DES_set_odd_parity(key);
100
	}
101
102
void DES_string_to_2keys(const char *str, DES_cblock *key1, DES_cblock *key2)
103
	{
104
	DES_key_schedule ks;
105
	int i,length;
106
	unsigned char j;
107
108
	memset(key1,0,8);
109
	memset(key2,0,8);
110
	length=strlen(str);
111
#ifdef OLD_STR_TO_KEY
112
	if (length <= 8)
113
		{
114
		for (i=0; i<length; i++)
115
			{
116
			(*key2)[i]=(*key1)[i]=(str[i]<<1);
117
			}
118
		}
119
	else
120
		{
121
		for (i=0; i<length; i++)
122
			{
123
			if ((i/8)&1)
124
				(*key2)[i%8]^=(str[i]<<1);
125
			else
126
				(*key1)[i%8]^=(str[i]<<1);
127
			}
128
		}
129
#else /* MIT COMPATIBLE */
130
	for (i=0; i<length; i++)
131
		{
132
		j=str[i];
133
		if ((i%32) < 16)
134
			{
135
			if ((i%16) < 8)
136
				(*key1)[i%8]^=(j<<1);
137
			else
138
				(*key2)[i%8]^=(j<<1);
139
			}
140
		else
141
			{
142
			j=((j<<4)&0xf0)|((j>>4)&0x0f);
143
			j=((j<<2)&0xcc)|((j>>2)&0x33);
144
			j=((j<<1)&0xaa)|((j>>1)&0x55);
145
			if ((i%16) < 8)
146
				(*key1)[7-(i%8)]^=j;
147
			else
148
				(*key2)[7-(i%8)]^=j;
149
			}
150
		}
151
	if (length <= 8) memcpy(key2,key1,8);
152
#endif
153
	DES_set_odd_parity(key1);
154
	DES_set_odd_parity(key2);
155
#ifdef EXPERIMENTAL_STR_TO_STRONG_KEY
156
	if(DES_is_weak_key(key1))
157
	    (*key1)[7] ^= 0xF0;
158
	DES_set_key(key1,&ks);
159
#else
160
	DES_set_key_unchecked(key1,&ks);
161
#endif
162
	DES_cbc_cksum((const unsigned char*)str,key1,length,&ks,key1);
163
#ifdef EXPERIMENTAL_STR_TO_STRONG_KEY
164
	if(DES_is_weak_key(key2))
165
	    (*key2)[7] ^= 0xF0;
166
	DES_set_key(key2,&ks);
167
#else
168
	DES_set_key_unchecked(key2,&ks);
169
#endif
170
	DES_cbc_cksum((const unsigned char*)str,key2,length,&ks,key2);
171
	explicit_bzero(&ks,sizeof(ks));
172
	DES_set_odd_parity(key1);
173
	DES_set_odd_parity(key2);
174
	}