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
320
321
322
323
324
325
326
327
328
|
/*
This file is part of TALER
(C) 2015, 2020, 2021 Taler Systems SA
TALER 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 3, or (at your option) any later version.
TALER 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
TALER; see the file COPYING. If not, see <http://www.gnu.org/licenses/>
*/
/**
* @file util/test_crypto.c
* @brief Tests for Taler-specific crypto logic
* @author Christian Grothoff <christian@grothoff.org>
*/
#include "platform.h"
#include "taler_util.h"
#include "taler_crypto_lib.h"
/**
* Test high-level link encryption/decryption API.
*
* @return 0 on success
*/
static int
test_high_level (void)
{
struct TALER_CoinSpendPrivateKeyP coin_priv;
struct TALER_CoinSpendPublicKeyP coin_pub;
struct TALER_TransferPrivateKeyP trans_priv;
struct TALER_TransferPublicKeyP trans_pub;
struct TALER_TransferSecretP secret;
struct TALER_TransferSecretP secret2;
struct TALER_PlanchetSecretsP fc1;
struct TALER_PlanchetSecretsP fc2;
GNUNET_CRYPTO_eddsa_key_create (&coin_priv.eddsa_priv);
GNUNET_CRYPTO_eddsa_key_get_public (&coin_priv.eddsa_priv,
&coin_pub.eddsa_pub);
GNUNET_CRYPTO_ecdhe_key_create (&trans_priv.ecdhe_priv);
GNUNET_CRYPTO_ecdhe_key_get_public (&trans_priv.ecdhe_priv,
&trans_pub.ecdhe_pub);
TALER_link_derive_transfer_secret (&coin_priv,
&trans_priv,
&secret);
TALER_link_reveal_transfer_secret (&trans_priv,
&coin_pub,
&secret2);
GNUNET_assert (0 ==
GNUNET_memcmp (&secret,
&secret2));
TALER_link_recover_transfer_secret (&trans_pub,
&coin_priv,
&secret2);
GNUNET_assert (0 ==
GNUNET_memcmp (&secret,
&secret2));
TALER_planchet_setup_refresh (&secret,
0,
&fc1);
TALER_planchet_setup_refresh (&secret,
1,
&fc2);
GNUNET_assert (0 !=
GNUNET_memcmp (&fc1,
&fc2));
return 0;
}
/**
* Test the basic planchet functionality of creating a fresh planchet
* and extracting the respective signature.
*
* @return 0 on success
*/
static int
test_planchets_rsa (void)
{
struct TALER_PlanchetSecretsP ps;
struct TALER_DenominationPrivateKey dk_priv;
struct TALER_DenominationPublicKey dk_pub;
struct TALER_ExchangeWithdrawValues alg_values;
struct TALER_PlanchetDetail pd;
struct TALER_BlindedDenominationSignature blind_sig;
struct TALER_FreshCoin coin;
struct TALER_CoinPubHash c_hash;
GNUNET_assert (GNUNET_SYSERR ==
TALER_denom_priv_create (&dk_priv,
&dk_pub,
TALER_DENOMINATION_INVALID));
GNUNET_assert (GNUNET_SYSERR ==
TALER_denom_priv_create (&dk_priv,
&dk_pub,
42));
GNUNET_assert (GNUNET_OK ==
TALER_denom_priv_create (&dk_priv,
&dk_pub,
TALER_DENOMINATION_RSA,
1024));
alg_values.cipher = TALER_DENOMINATION_RSA;
TALER_planchet_setup_random (&ps,
&alg_values);
GNUNET_assert (GNUNET_OK ==
TALER_planchet_prepare (&dk_pub,
&alg_values,
&ps,
&c_hash,
&pd));
GNUNET_assert (GNUNET_OK ==
TALER_denom_sign_blinded (&blind_sig,
&dk_priv,
&pd.blinded_planchet));
GNUNET_assert (GNUNET_OK ==
TALER_planchet_to_coin (&dk_pub,
&blind_sig,
&ps,
&c_hash,
&alg_values,
&coin));
TALER_blinded_denom_sig_free (&blind_sig);
TALER_denom_sig_free (&coin.sig);
TALER_denom_priv_free (&dk_priv);
TALER_denom_pub_free (&dk_pub);
return 0;
}
/**
* Test the basic planchet functionality of creating a fresh planchet with CS denomination
* and extracting the respective signature.
*
* @return 0 on success
*/
static int
test_planchets_cs (void)
{
struct TALER_PlanchetSecretsP ps;
struct TALER_DenominationPrivateKey dk_priv;
struct TALER_DenominationPublicKey dk_pub;
struct TALER_PlanchetDetail pd;
struct TALER_CoinPubHash c_hash;
struct TALER_BlindedDenominationSignature blind_sig;
struct TALER_FreshCoin coin;
struct TALER_ExchangeWithdrawValues alg_values;
GNUNET_assert (GNUNET_OK ==
TALER_denom_priv_create (&dk_priv,
&dk_pub,
TALER_DENOMINATION_CS));
alg_values.cipher = TALER_DENOMINATION_CS;
TALER_planchet_setup_random (&ps,
&alg_values);
TALER_cs_withdraw_nonce_derive (&ps.coin_priv,
&pd.blinded_planchet.details.
cs_blinded_planchet.nonce);
GNUNET_assert (GNUNET_OK ==
TALER_denom_cs_derive_r_public (
&pd.blinded_planchet.details.cs_blinded_planchet.nonce,
&dk_priv,
&alg_values.details.cs_values.r_pub));
TALER_planchet_blinding_secret_create (&ps,
&alg_values);
GNUNET_assert (GNUNET_OK ==
TALER_planchet_prepare (&dk_pub,
&alg_values,
&ps,
&c_hash,
&pd));
GNUNET_assert (GNUNET_OK ==
TALER_denom_sign_blinded (&blind_sig,
&dk_priv,
&pd.blinded_planchet));
GNUNET_assert (GNUNET_OK ==
TALER_planchet_to_coin (&dk_pub,
&blind_sig,
&ps,
&c_hash,
&alg_values,
&coin));
TALER_blinded_denom_sig_free (&blind_sig);
TALER_denom_sig_free (&coin.sig);
TALER_denom_priv_free (&dk_priv);
TALER_denom_pub_free (&dk_pub);
return 0;
}
/**
* Test the basic planchet functionality of creating a fresh planchet
* and extracting the respective signature.
* Calls test_planchets_rsa and test_planchets_cs
*
* @return 0 on success
*/
static int
test_planchets (void)
{
if (0 != test_planchets_rsa ())
return -1;
return test_planchets_cs ();
}
static int
test_exchange_sigs (void)
{
const char *pt = "payto://x-taler-bank/localhost/Account";
struct TALER_MasterPrivateKeyP priv;
struct TALER_MasterPublicKeyP pub;
struct TALER_MasterSignatureP sig;
GNUNET_CRYPTO_eddsa_key_create (&priv.eddsa_priv);
TALER_exchange_wire_signature_make (pt,
&priv,
&sig);
GNUNET_CRYPTO_eddsa_key_get_public (&priv.eddsa_priv,
&pub.eddsa_pub);
if (GNUNET_OK !=
TALER_exchange_wire_signature_check (pt,
&pub,
&sig))
{
GNUNET_break (0);
return 1;
}
if (GNUNET_OK ==
TALER_exchange_wire_signature_check (
"payto://x-taler-bank/localhost/Other",
&pub,
&sig))
{
GNUNET_break (0);
return 1;
}
return 0;
}
static int
test_merchant_sigs (void)
{
const char *pt = "payto://x-taler-bank/localhost/Account";
struct TALER_WireSalt salt;
struct TALER_MerchantPrivateKeyP priv;
struct TALER_MerchantPublicKeyP pub;
struct TALER_MerchantSignatureP sig;
GNUNET_CRYPTO_eddsa_key_create (&priv.eddsa_priv);
memset (&salt,
42,
sizeof (salt));
TALER_merchant_wire_signature_make (pt,
&salt,
&priv,
&sig);
GNUNET_CRYPTO_eddsa_key_get_public (&priv.eddsa_priv,
&pub.eddsa_pub);
if (GNUNET_OK !=
TALER_merchant_wire_signature_check (pt,
&salt,
&pub,
&sig))
{
GNUNET_break (0);
return 1;
}
if (GNUNET_OK ==
TALER_merchant_wire_signature_check (
"payto://x-taler-bank/localhost/Other",
&salt,
&pub,
&sig))
{
GNUNET_break (0);
return 1;
}
memset (&salt,
43,
sizeof (salt));
if (GNUNET_OK ==
TALER_merchant_wire_signature_check (pt,
&salt,
&pub,
&sig))
{
GNUNET_break (0);
return 1;
}
return 0;
}
int
main (int argc,
const char *const argv[])
{
(void) argc;
(void) argv;
if (0 != test_high_level ())
return 1;
if (0 != test_planchets ())
return 2;
if (0 != test_exchange_sigs ())
return 3;
if (0 != test_merchant_sigs ())
return 4;
return 0;
}
/* end of test_crypto.c */
|
