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
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
|
/***********************************************************
Copyright 1991-1995 by Stichting Mathematisch Centrum, Amsterdam,
The Netherlands.
All Rights Reserved
Permission to use, copy, modify, and distribute this software and its
documentation for any purpose and without fee is hereby granted,
provided that the above copyright notice appear in all copies and that
both that copyright notice and this permission notice appear in
supporting documentation, and that the names of Stichting Mathematisch
Centrum or CWI not be used in advertising or publicity pertaining to
distribution of the software without specific, written prior permission.
STICHTING MATHEMATISCH CENTRUM DISCLAIMS ALL WARRANTIES WITH REGARD TO
THIS SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND
FITNESS, IN NO EVENT SHALL STICHTING MATHEMATISCH CENTRUM BE LIABLE
FOR ANY SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT
OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
******************************************************************/
/* MD5 module */
/* This module provides an interface to the RSA Data Security,
Inc. MD5 Message-Digest Algorithm, described in RFC 1321.
It requires the files md5c.c and md5.h (which are slightly changed
from the versions in the RFC to avoid the "global.h" file.) */
/* MD5 objects */
#include "allobjects.h"
#include "modsupport.h"
#include "md5.h"
typedef struct {
OB_HEAD
MD5_CTX md5; /* the context holder */
} md5object;
staticforward typeobject MD5type;
#define is_md5object(v) ((v)->ob_type == &MD5type)
static md5object *
newmd5object()
{
md5object *md5p;
md5p = NEWOBJ(md5object, &MD5type);
if (md5p == NULL)
return NULL;
MD5Init(&md5p->md5); /* actual initialisation */
return md5p;
}
/* MD5 methods */
static void
md5_dealloc(md5p)
md5object *md5p;
{
DEL(md5p);
}
/* MD5 methods-as-attributes */
static object *
md5_update(self, args)
md5object *self;
object *args;
{
unsigned char *cp;
int len;
if (!getargs(args, "s#", &cp, &len))
return NULL;
MD5Update(&self->md5, cp, len);
INCREF(None);
return None;
}
static object *
md5_digest(self, args)
md5object *self;
object *args;
{
MD5_CTX mdContext;
unsigned char aDigest[16];
if (!getnoarg(args))
return NULL;
/* make a temporary copy, and perform the final */
mdContext = self->md5;
MD5Final(aDigest, &mdContext);
return newsizedstringobject((char *)aDigest, 16);
}
static object *
md5_copy(self, args)
md5object *self;
object *args;
{
md5object *md5p;
if (!getnoarg(args))
return NULL;
if ((md5p = newmd5object()) == NULL)
return NULL;
md5p->md5 = self->md5;
return (object *)md5p;
}
static struct methodlist md5_methods[] = {
{"update", (method)md5_update},
{"digest", (method)md5_digest},
{"copy", (method)md5_copy},
{NULL, NULL} /* sentinel */
};
static object *
md5_getattr(self, name)
md5object *self;
char *name;
{
return findmethod(md5_methods, (object *)self, name);
}
statichere typeobject MD5type = {
OB_HEAD_INIT(&Typetype)
0, /*ob_size*/
"md5", /*tp_name*/
sizeof(md5object), /*tp_size*/
0, /*tp_itemsize*/
/* methods */
(destructor)md5_dealloc, /*tp_dealloc*/
0, /*tp_print*/
(getattrfunc)md5_getattr, /*tp_getattr*/
0, /*tp_setattr*/
0, /*tp_compare*/
0, /*tp_repr*/
0, /*tp_as_number*/
};
/* MD5 functions */
static object *
MD5_new(self, args)
object *self;
object *args;
{
md5object *md5p;
unsigned char *cp = NULL;
int len = 0;
if (!newgetargs(args, "|s#", &cp, &len))
return NULL;
if ((md5p = newmd5object()) == NULL)
return NULL;
if (cp)
MD5Update(&md5p->md5, cp, len);
return (object *)md5p;
}
/* List of functions exported by this module */
static struct methodlist md5_functions[] = {
{"new", (method)MD5_new, 1},
{"md5", (method)MD5_new, 1}, /* Backward compatibility */
{NULL, NULL} /* Sentinel */
};
/* Initialize this module. */
void
initmd5()
{
(void)initmodule("md5", md5_functions);
}
|
