aboutsummaryrefslogtreecommitdiff
path: root/src/util/test_crypto.c
blob: a5313195a4f49edafabe3f6abf2abe0086a18757 (plain)
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
/*
  This file is part of TALER
  (C) 2015 Christian Grothoff (and other contributing authors)

  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, 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 low-level link encryption/decryption APIs.
 *
 * @return 0 on success
 */
static int
test_basics ()
{
  struct TALER_EncryptedLinkSecretP secret_enc;
  struct TALER_TransferSecretP trans_sec;
  struct TALER_LinkSecretP secret;
  struct TALER_LinkSecretP secret2;
  struct TALER_RefreshLinkEncrypted *rl_enc;
  struct TALER_RefreshLinkDecrypted rl;
  struct TALER_RefreshLinkDecrypted *rld;
                       
  GNUNET_log_setup ("test-crypto",
		    "WARNING",
		    NULL);
  GNUNET_CRYPTO_random_block (GNUNET_CRYPTO_QUALITY_WEAK,
			      &secret,
			      sizeof (secret));
  GNUNET_CRYPTO_random_block (GNUNET_CRYPTO_QUALITY_WEAK,
			      &rl.coin_priv,
			      sizeof (rl.coin_priv));
  rl.blinding_key.rsa_blinding_key = GNUNET_CRYPTO_rsa_blinding_key_create (1024);
  rl_enc = TALER_refresh_encrypt (&rl,
				  &secret);
  GNUNET_CRYPTO_random_block (GNUNET_CRYPTO_QUALITY_WEAK,
			      &trans_sec,
			      sizeof (trans_sec));
  GNUNET_assert (GNUNET_OK ==
		 TALER_transfer_encrypt (&secret,
					 &trans_sec,
					 &secret_enc));
  GNUNET_assert (GNUNET_OK ==
		 TALER_transfer_decrypt (&secret_enc,
					 &trans_sec,
					 &secret2));
  GNUNET_assert (0 == memcmp (&secret,
			      &secret2,
			      sizeof (secret)));
  rld = TALER_refresh_decrypt (rl_enc,
			       &secret2);
  GNUNET_assert (NULL != rld);
  GNUNET_assert (0 == memcmp (&rld->coin_priv,
			      &rl.coin_priv,
			      sizeof (struct TALER_CoinSpendPrivateKeyP)));
  GNUNET_assert (0 ==
		 GNUNET_CRYPTO_rsa_blinding_key_cmp (rl.blinding_key.rsa_blinding_key,
						     rld->blinding_key.rsa_blinding_key));
  GNUNET_CRYPTO_rsa_blinding_key_free (rld->blinding_key.rsa_blinding_key);
  GNUNET_free (rld);
  GNUNET_CRYPTO_rsa_blinding_key_free (rl.blinding_key.rsa_blinding_key);
  return 0;
}


/**
 * Test #TALER_refresh_link_encrypted_decode().
 *
 * @return 0 on success
 */
static int
test_rled ()
{
  struct TALER_RefreshLinkEncrypted *rle;
  char buf[512];
  char *buf2;
  size_t buf_len = sizeof (buf);

  memset (buf, 42, sizeof (buf));
  rle = TALER_refresh_link_encrypted_decode (buf,
					     buf_len);
  GNUNET_assert (NULL != rle);
  buf_len = 42;
  buf2 = TALER_refresh_link_encrypted_encode (rle,
					      &buf_len);
  GNUNET_assert (NULL != buf2);
  GNUNET_assert (buf_len == sizeof (buf));
  GNUNET_assert (0 == memcmp (buf,
			      buf2,
			      buf_len));
  GNUNET_free (rle);
  GNUNET_free (buf2);
  return 0;
}


/**
 * Test high-level link encryption/decryption API.
 *
 * @return 0 on success
 */
static int
test_high_level ()
{
  struct GNUNET_CRYPTO_EddsaPrivateKey *pk;
  struct TALER_LinkSecretP secret;
  struct TALER_LinkSecretP secret2;
  struct TALER_CoinSpendPublicKeyP coin_pub;
  struct TALER_CoinSpendPrivateKeyP coin_priv;
  struct TALER_TransferPrivateKeyP trans_priv;
  struct TALER_TransferPublicKeyP trans_pub;
  struct TALER_EncryptedLinkSecretP secret_enc;

  pk = GNUNET_CRYPTO_eddsa_key_create ();
  GNUNET_CRYPTO_random_block (GNUNET_CRYPTO_QUALITY_WEAK,
			      &secret,
			      sizeof (secret));
  GNUNET_CRYPTO_eddsa_key_get_public (pk,
				      &coin_pub.eddsa_pub);
  GNUNET_assert (GNUNET_OK == 
		 TALER_link_encrypt_secret (&secret,
					    &coin_pub,
					    &trans_priv,
					    &trans_pub,
					    &secret_enc));
  GNUNET_assert (GNUNET_OK == 
		 TALER_link_decrypt_secret (&secret_enc,
					    &trans_priv,
					    &coin_pub,
					    &secret2));
  GNUNET_assert (0 ==
		 memcmp (&secret,
			 &secret2,
			 sizeof (secret)));
  coin_priv.eddsa_priv = *pk;
  GNUNET_assert (GNUNET_OK == 
		 TALER_link_decrypt_secret2 (&secret_enc,
					     &trans_pub,
					     &coin_priv,
					     &secret2));
  GNUNET_assert (0 ==
		 memcmp (&secret,
			 &secret2,
			 sizeof (secret)));
  GNUNET_free (pk);
  return 0;
}


int
main(int argc,
     const char *const argv[])
{
  if (0 != test_basics ())
    return 1;
  if (0 != test_rled ())
    return 1;
  if (0 != test_high_level ())
    return 1;
  return 0;  
}

/* end of test_crypto.c */