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
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
|
/**
* \file lib/fko_digest.c
*
* \brief Create the base64-encoded digest for the current spa data. The
* digest used is determined by the digest_type setting in the
* fko context.
*/
/* Fwknop is developed primarily by the people listed in the file 'AUTHORS'.
* Copyright (C) 2009-2015 fwknop developers and contributors. For a full
* list of contributors, see the file 'CREDITS'.
*
* License (GNU General Public License):
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version 2
* of the License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
* USA
*
*****************************************************************************
*/
#include "fko_common.h"
#include "fko.h"
#include "digest.h"
/* Set the SPA digest type.
*/
static int
set_spa_digest_type(fko_ctx_t ctx,
short *digest_type_field, const short digest_type)
{
#if HAVE_LIBFIU
fiu_return_on("set_spa_digest_type_init", FKO_ERROR_CTX_NOT_INITIALIZED);
#endif
/* Must be initialized
*/
if(!CTX_INITIALIZED(ctx))
return(FKO_ERROR_CTX_NOT_INITIALIZED);
#if HAVE_LIBFIU
fiu_return_on("set_spa_digest_type_val",
FKO_ERROR_INVALID_DATA_ENCODE_DIGEST_VALIDFAIL);
#endif
if(digest_type < 1 || digest_type >= FKO_LAST_DIGEST_TYPE)
return(FKO_ERROR_INVALID_DATA_ENCODE_DIGEST_VALIDFAIL);
*digest_type_field = digest_type;
ctx->state |= FKO_DIGEST_TYPE_MODIFIED;
return(FKO_SUCCESS);
}
int
fko_set_spa_digest_type(fko_ctx_t ctx, const short digest_type)
{
return set_spa_digest_type(ctx, &ctx->digest_type, digest_type);
}
int
fko_set_raw_spa_digest_type(fko_ctx_t ctx, const short raw_digest_type)
{
return set_spa_digest_type(ctx, &ctx->raw_digest_type, raw_digest_type);
}
/* Return the SPA digest type.
*/
int
fko_get_spa_digest_type(fko_ctx_t ctx, short *digest_type)
{
#if HAVE_LIBFIU
fiu_return_on("fko_get_spa_digest_type_init",
FKO_ERROR_CTX_NOT_INITIALIZED);
#endif
/* Must be initialized
*/
if(!CTX_INITIALIZED(ctx))
return(FKO_ERROR_CTX_NOT_INITIALIZED);
#if HAVE_LIBFIU
fiu_return_on("fko_get_spa_digest_type_val",
FKO_ERROR_INVALID_DATA);
#endif
if(digest_type == NULL)
return(FKO_ERROR_INVALID_DATA);
*digest_type = ctx->digest_type;
return(FKO_SUCCESS);
}
/* Return the SPA digest type.
*/
int
fko_get_raw_spa_digest_type(fko_ctx_t ctx, short *raw_digest_type)
{
#if HAVE_LIBFIU
fiu_return_on("fko_get_raw_spa_digest_type_init",
FKO_ERROR_CTX_NOT_INITIALIZED);
#endif
/* Must be initialized
*/
if(!CTX_INITIALIZED(ctx))
return(FKO_ERROR_CTX_NOT_INITIALIZED);
if(raw_digest_type == NULL)
return(FKO_ERROR_INVALID_DATA);
*raw_digest_type = ctx->raw_digest_type;
return(FKO_SUCCESS);
}
static int
set_digest(char *data, char **digest, short digest_type, int *digest_len)
{
char *md = NULL;
int data_len;
data_len = strnlen(data, MAX_SPA_ENCODED_MSG_SIZE);
#if HAVE_LIBFIU
fiu_return_on("set_digest_toobig",
FKO_ERROR_INVALID_DATA_ENCODE_DIGEST_TOOBIG);
#endif
if(data_len == MAX_SPA_ENCODED_MSG_SIZE)
return(FKO_ERROR_INVALID_DATA_ENCODE_DIGEST_TOOBIG);
#if HAVE_LIBFIU
fiu_return_on("set_digest_invalidtype", FKO_ERROR_INVALID_DIGEST_TYPE);
fiu_return_on("set_digest_calloc", FKO_ERROR_MEMORY_ALLOCATION);
#endif
switch(digest_type)
{
case FKO_DIGEST_MD5:
md = calloc(1, MD_HEX_SIZE(MD5_DIGEST_LEN)+1);
if(md == NULL)
return(FKO_ERROR_MEMORY_ALLOCATION);
md5_base64(md,
(unsigned char*)data, data_len);
*digest_len = MD5_B64_LEN;
break;
case FKO_DIGEST_SHA1:
md = calloc(1, MD_HEX_SIZE(SHA1_DIGEST_LEN)+1);
if(md == NULL)
return(FKO_ERROR_MEMORY_ALLOCATION);
sha1_base64(md,
(unsigned char*)data, data_len);
*digest_len = SHA1_B64_LEN;
break;
case FKO_DIGEST_SHA256:
md = calloc(1, MD_HEX_SIZE(SHA256_DIGEST_LEN)+1);
if(md == NULL)
return(FKO_ERROR_MEMORY_ALLOCATION);
sha256_base64(md,
(unsigned char*)data, data_len);
*digest_len = SHA256_B64_LEN;
break;
case FKO_DIGEST_SHA384:
md = calloc(1, MD_HEX_SIZE(SHA384_DIGEST_LEN)+1);
if(md == NULL)
return(FKO_ERROR_MEMORY_ALLOCATION);
sha384_base64(md,
(unsigned char*)data, data_len);
*digest_len = SHA384_B64_LEN;
break;
case FKO_DIGEST_SHA512:
md = calloc(1, MD_HEX_SIZE(SHA512_DIGEST_LEN)+1);
if(md == NULL)
return(FKO_ERROR_MEMORY_ALLOCATION);
sha512_base64(md,
(unsigned char*)data, data_len);
*digest_len = SHA512_B64_LEN;
break;
case FKO_DIGEST_SHA3_256:
md = calloc(1, MD_HEX_SIZE(SHA3_256_DIGEST_LEN)+1);
if(md == NULL)
return(FKO_ERROR_MEMORY_ALLOCATION);
sha3_256_base64(md,
(unsigned char*)data, data_len);
*digest_len = SHA3_256_B64_LEN;
break;
case FKO_DIGEST_SHA3_512:
md = calloc(1, MD_HEX_SIZE(SHA3_512_DIGEST_LEN)+1);
if(md == NULL)
return(FKO_ERROR_MEMORY_ALLOCATION);
sha3_512_base64(md,
(unsigned char*)data, data_len);
*digest_len = SHA3_512_B64_LEN;
break;
default:
return(FKO_ERROR_INVALID_DIGEST_TYPE);
}
/* Just in case this is a subsequent call to this function. We
* do not want to be leaking memory.
*/
if(*digest != NULL)
free(*digest);
*digest = md;
return(FKO_SUCCESS);
}
int
fko_set_spa_digest(fko_ctx_t ctx)
{
#if HAVE_LIBFIU
fiu_return_on("fko_set_spa_digest_init", FKO_ERROR_CTX_NOT_INITIALIZED);
#endif
/* Must be initialized
*/
if(!CTX_INITIALIZED(ctx))
return(FKO_ERROR_CTX_NOT_INITIALIZED);
/* Must have encoded message data to start with.
*/
if(ctx->encoded_msg == NULL)
return(FKO_ERROR_MISSING_ENCODED_DATA);
#if HAVE_LIBFIU
fiu_return_on("fko_set_spa_digest_encoded", FKO_ERROR_MISSING_ENCODED_DATA);
#endif
return set_digest(ctx->encoded_msg, &ctx->digest,
ctx->digest_type, &ctx->digest_len);
}
int
fko_set_raw_spa_digest(fko_ctx_t ctx)
{
#if HAVE_LIBFIU
fiu_return_on("fko_set_raw_spa_digest_init", FKO_ERROR_CTX_NOT_INITIALIZED);
#endif
/* Must be initialized
*/
if(!CTX_INITIALIZED(ctx))
return(FKO_ERROR_CTX_NOT_INITIALIZED);
/* Must have encoded message data to start with.
*/
if(ctx->encrypted_msg == NULL)
return(FKO_ERROR_MISSING_ENCODED_DATA);
#if HAVE_LIBFIU
fiu_return_on("fko_set_raw_spa_digest_val", FKO_ERROR_MISSING_ENCODED_DATA);
#endif
return set_digest(ctx->encrypted_msg, &ctx->raw_digest,
ctx->raw_digest_type, &ctx->raw_digest_len);
}
int
fko_get_spa_digest(fko_ctx_t ctx, char **md)
{
#if HAVE_LIBFIU
fiu_return_on("fko_get_spa_digest_init", FKO_ERROR_CTX_NOT_INITIALIZED);
#endif
/* Must be initialized
*/
if(!CTX_INITIALIZED(ctx))
return(FKO_ERROR_CTX_NOT_INITIALIZED);
#if HAVE_LIBFIU
fiu_return_on("fko_get_spa_digest_val", FKO_ERROR_INVALID_DATA);
#endif
if(md == NULL)
return(FKO_ERROR_INVALID_DATA);
*md = ctx->digest;
return(FKO_SUCCESS);
}
int
fko_get_raw_spa_digest(fko_ctx_t ctx, char **md)
{
#if HAVE_LIBFIU
fiu_return_on("fko_get_raw_spa_digest_init", FKO_ERROR_CTX_NOT_INITIALIZED);
#endif
/* Must be initialized
*/
if(!CTX_INITIALIZED(ctx))
return(FKO_ERROR_CTX_NOT_INITIALIZED);
*md = ctx->raw_digest;
return(FKO_SUCCESS);
}
/***EOF***/
|
