1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
|
/* $OpenBSD: key.c,v 1.6 2002/01/23 18:44:47 ho Exp $ */
/*
* The author of this code is Angelos D. Keromytis (angelos@cis.upenn.edu)
*
* Copyright (c) 2000-2001 Angelos D. Keromytis.
*
* Permission to use, copy, and modify this software with or without fee
* is hereby granted, provided that this entire notice is included in
* all copies of any software which is or includes a copy or
* modification of this software.
* You may use this code under the GNU public license if you so wish. Please
* contribute changes back to the authors under this freer than GPL license
* so that we may further the use of strong encryption without limitations to
* all.
*
* THIS SOFTWARE IS BEING PROVIDED "AS IS", WITHOUT ANY EXPRESS OR
* IMPLIED WARRANTY. IN PARTICULAR, NONE OF THE AUTHORS MAKES ANY
* REPRESENTATION OR WARRANTY OF ANY KIND CONCERNING THE
* MERCHANTABILITY OF THIS SOFTWARE OR ITS FITNESS FOR ANY PARTICULAR
* PURPOSE.
*/
#include <string.h>
#include "sysdep.h"
#include "dyn.h"
#include "key.h"
#include "libcrypto.h"
#include "log.h"
#include "util.h"
#include "x509.h"
void
key_free (int type, int private, void *key)
{
switch (type)
{
case ISAKMP_KEY_PASSPHRASE:
free (key);
break;
case ISAKMP_KEY_RSA:
LC (RSA_free, (key));
break;
case ISAKMP_KEY_NONE:
default:
log_error ("key_free: unknown/unsupportedkey type %d", type);
break;
}
}
/* Convert from internal form to serialized */
void
key_serialize (int type, int private, void *key, u_int8_t **data, size_t *datalen)
{
u_int8_t *p;
switch (type)
{
case ISAKMP_KEY_PASSPHRASE:
*datalen = strlen ((char *)key);
*data = strdup ((char *)key);
break;
case ISAKMP_KEY_RSA:
switch (private)
{
case ISAKMP_KEYTYPE_PUBLIC:
*datalen = LC (i2d_RSAPublicKey, ((RSA *)key, NULL));
*data = p = malloc (*datalen);
if (!p)
{
log_error("key_serialize: malloc (%d) failed", *datalen);
return;
}
*datalen = LC (i2d_RSAPublicKey, ((RSA *)key, &p));
break;
case ISAKMP_KEYTYPE_PRIVATE:
*datalen = LC (i2d_RSAPrivateKey, ((RSA *)key, NULL));
*data = p = malloc (*datalen);
if (!p)
{
log_error("key_serialize: malloc (%d) failed", *datalen);
return;
}
*datalen = LC (i2d_RSAPrivateKey, ((RSA *)key, &p));
break;
}
break;
default:
log_error ("key_serialize: unknown/unsupported key type %d", type);
break;
}
}
/* Convert from serialized to printable */
char *
key_printable (int type, int private, u_int8_t *data, int datalen)
{
char *s;
int i;
switch (type)
{
case ISAKMP_KEY_PASSPHRASE:
return strdup ((char *)data);
case ISAKMP_KEY_RSA:
s = malloc (datalen * 2);
if (!s)
{
log_error ("key_printable: malloc (%d) failed", datalen * 2);
return 0;
}
for (i = 0; i < datalen; i++)
snprintf (s + (2 * i), 2 * (datalen - i), "%02x", data[i]);
return s;
default:
log_error ("key_printable: unknown/unsupported key type %d", type);
return 0;
}
}
/* Convert from serialized to internal. */
void *
key_internalize (int type, int private, u_int8_t *data, int datalen)
{
switch (type)
{
case ISAKMP_KEY_PASSPHRASE:
return strdup (data);
case ISAKMP_KEY_RSA:
switch (private)
{
case ISAKMP_KEYTYPE_PUBLIC:
return LC (d2i_RSAPublicKey, (NULL, &data, datalen));
case ISAKMP_KEYTYPE_PRIVATE:
return LC (d2i_RSAPrivateKey, (NULL, &data, datalen));
default:
log_error ("key_internalize: not public or private RSA key passed");
return 0;
}
break;
default:
log_error ("key_internalize: unknown/unsupported key type %d", type);
break;
}
return 0;
}
/* Convert from printable to serialized */
void
key_from_printable (int type, int private, char *key, u_int8_t **data,
int *datalen)
{
switch (type)
{
case ISAKMP_KEY_PASSPHRASE:
*datalen = strlen (key);
*data = strdup (key);
break;
case ISAKMP_KEY_RSA:
*datalen = (strlen (key) + 1) / 2; /* Round up, just in case */
*data = malloc (*datalen);
if (!*data)
{
log_error ("key_from_printable: malloc (%d) failed", *datalen);
return;
}
*datalen = hex2raw (key, *data, *datalen);
break;
default:
log_error ("key_from_printable: unknown/unsupported key type %d", type);
break;
}
}
|
