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
|
/*
This file is part of GNUnet
Copyright (C) 2014, 2015, 2023 GNUnet e.V.
GNUnet is free software: you can redistribute it and/or modify it
under the terms of the GNU Affero General Public License as published
by the Free Software Foundation, either version 3 of the License,
or (at your option) any later version.
GNUnet 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
Affero General Public License for more details.
You should have received a copy of the GNU Affero General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>.
SPDX-License-Identifier: AGPL3.0-or-later
*/
/**
* @file util/test_crypto_blind.c
* @brief testcase for utility functions for blind signatures
* @author Christian Grothoff <grothoff@gnunet.org>
*/
#include "platform.h"
#include <gcrypt.h>
#include "gnunet_util_lib.h"
int
main (int argc,
char *argv[])
{
struct GNUNET_CRYPTO_BlindSignPrivateKey *priv;
struct GNUNET_CRYPTO_BlindSignPublicKey *pub;
struct GNUNET_CRYPTO_BlindingInputValues *biv;
struct GNUNET_CRYPTO_BlindedMessage *bm;
struct GNUNET_CRYPTO_BlindedSignature *bsig;
struct GNUNET_CRYPTO_UnblindedSignature *sig;
union GNUNET_CRYPTO_BlindingSecretP bsec;
union GNUNET_CRYPTO_BlindSessionNonce nonce;
GNUNET_log_setup ("test-crypto-blind",
"WARNING",
NULL);
GNUNET_CRYPTO_random_block (GNUNET_CRYPTO_QUALITY_WEAK,
&bsec,
sizeof (bsec));
GNUNET_CRYPTO_random_block (GNUNET_CRYPTO_QUALITY_WEAK,
&nonce,
sizeof (nonce));
GNUNET_assert (GNUNET_OK ==
GNUNET_CRYPTO_blind_sign_keys_create (&priv,
&pub,
GNUNET_CRYPTO_BSA_CS));
biv = GNUNET_CRYPTO_get_blinding_input_values (priv,
&nonce,
"salt");
bm = GNUNET_CRYPTO_message_blind_to_sign (pub,
&bsec,
&nonce,
"hello",
5,
biv);
bsig = GNUNET_CRYPTO_blind_sign (priv,
"salt",
bm);
sig = GNUNET_CRYPTO_blind_sig_unblind (bsig,
&bsec,
"hello",
5,
biv,
pub);
GNUNET_assert (GNUNET_OK ==
GNUNET_CRYPTO_blind_sig_verify (pub,
sig,
"hello",
5));
GNUNET_CRYPTO_blinded_sig_decref (bsig);
GNUNET_CRYPTO_unblinded_sig_decref (sig);
GNUNET_CRYPTO_blinded_message_decref (bm);
GNUNET_CRYPTO_blind_sign_priv_decref (priv);
GNUNET_CRYPTO_blind_sign_pub_decref (pub);
return 0;
}
|
