aboutsummaryrefslogtreecommitdiff
path: root/src/util/secmod_signatures.c
blob: 8e629ebbc9e8b18f3e39d6ca71d0b220b65a66ef (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
  Copyright (C) 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 secmod_signatures.c
 * @brief Utility functions for Taler security module signatures
 * @author Christian Grothoff
 */
#include "platform.h"
#include "taler_util.h"
#include "taler_signatures.h"


void
TALER_exchange_secmod_eddsa_sign (
  const struct TALER_ExchangePublicKeyP *exchange_pub,
  struct GNUNET_TIME_Timestamp start_sign,
  struct GNUNET_TIME_Relative duration,
  const struct TALER_SecurityModulePrivateKeyP *secm_priv,
  struct TALER_SecurityModuleSignatureP *secm_sig)
{
  struct TALER_SigningKeyAnnouncementPS ska = {
    .purpose.purpose = htonl (TALER_SIGNATURE_SM_SIGNING_KEY),
    .purpose.size = htonl (sizeof (ska)),
    .exchange_pub = *exchange_pub,
    .anchor_time = GNUNET_TIME_timestamp_hton (start_sign),
    .duration = GNUNET_TIME_relative_hton (duration)
  };

  GNUNET_CRYPTO_eddsa_sign (&secm_priv->eddsa_priv,
                            &ska,
                            &secm_sig->eddsa_signature);
}


enum GNUNET_GenericReturnValue
TALER_exchange_secmod_eddsa_verify (
  const struct TALER_ExchangePublicKeyP *exchange_pub,
  struct GNUNET_TIME_Timestamp start_sign,
  struct GNUNET_TIME_Relative duration,
  const struct TALER_SecurityModulePublicKeyP *secm_pub,
  const struct TALER_SecurityModuleSignatureP *secm_sig)
{
  struct TALER_SigningKeyAnnouncementPS ska = {
    .purpose.purpose = htonl (TALER_SIGNATURE_SM_SIGNING_KEY),
    .purpose.size = htonl (sizeof (ska)),
    .exchange_pub = *exchange_pub,
    .anchor_time = GNUNET_TIME_timestamp_hton (start_sign),
    .duration = GNUNET_TIME_relative_hton (duration)
  };

  return
    GNUNET_CRYPTO_eddsa_verify (TALER_SIGNATURE_SM_SIGNING_KEY,
                                &ska,
                                &secm_sig->eddsa_signature,
                                &secm_pub->eddsa_pub);
}


void
TALER_exchange_secmod_rsa_sign (
  const struct TALER_RsaPubHashP *h_rsa,
  const char *section_name,
  struct GNUNET_TIME_Timestamp start_sign,
  struct GNUNET_TIME_Relative duration,
  const struct TALER_SecurityModulePrivateKeyP *secm_priv,
  struct TALER_SecurityModuleSignatureP *secm_sig)
{
  struct TALER_DenominationKeyAnnouncementPS dka = {
    .purpose.purpose = htonl (TALER_SIGNATURE_SM_RSA_DENOMINATION_KEY),
    .purpose.size = htonl (sizeof (dka)),
    .h_denom.hash = h_rsa->hash,
    .anchor_time = GNUNET_TIME_timestamp_hton (start_sign),
    .duration_withdraw = GNUNET_TIME_relative_hton (duration)
  };

  GNUNET_CRYPTO_hash (section_name,
                      strlen (section_name) + 1,
                      &dka.h_section_name);
  GNUNET_CRYPTO_eddsa_sign (&secm_priv->eddsa_priv,
                            &dka,
                            &secm_sig->eddsa_signature);

}


enum GNUNET_GenericReturnValue
TALER_exchange_secmod_rsa_verify (
  const struct TALER_RsaPubHashP *h_rsa,
  const char *section_name,
  struct GNUNET_TIME_Timestamp start_sign,
  struct GNUNET_TIME_Relative duration,
  const struct TALER_SecurityModulePublicKeyP *secm_pub,
  const struct TALER_SecurityModuleSignatureP *secm_sig)
{
  struct TALER_DenominationKeyAnnouncementPS dka = {
    .purpose.purpose = htonl (TALER_SIGNATURE_SM_RSA_DENOMINATION_KEY),
    .purpose.size = htonl (sizeof (dka)),
    .h_denom.hash = h_rsa->hash,
    .anchor_time = GNUNET_TIME_timestamp_hton (start_sign),
    .duration_withdraw = GNUNET_TIME_relative_hton (duration)
  };

  GNUNET_CRYPTO_hash (section_name,
                      strlen (section_name) + 1,
                      &dka.h_section_name);
  return
    GNUNET_CRYPTO_eddsa_verify (TALER_SIGNATURE_SM_RSA_DENOMINATION_KEY,
                                &dka,
                                &secm_sig->eddsa_signature,
                                &secm_pub->eddsa_pub);
}


void
TALER_exchange_secmod_cs_sign (
  const struct TALER_CsPubHashP *h_cs,
  const char *section_name,
  struct GNUNET_TIME_Timestamp start_sign,
  struct GNUNET_TIME_Relative duration,
  const struct TALER_SecurityModulePrivateKeyP *secm_priv,
  struct TALER_SecurityModuleSignatureP *secm_sig)
{
  struct TALER_DenominationKeyAnnouncementPS dka = {
    .purpose.purpose = htonl (TALER_SIGNATURE_SM_CS_DENOMINATION_KEY),
    .purpose.size = htonl (sizeof (dka)),
    .h_denom.hash = h_cs->hash,
    .anchor_time = GNUNET_TIME_timestamp_hton (start_sign),
    .duration_withdraw = GNUNET_TIME_relative_hton (duration)
  };

  GNUNET_CRYPTO_hash (section_name,
                      strlen (section_name) + 1,
                      &dka.h_section_name);
  GNUNET_CRYPTO_eddsa_sign (&secm_priv->eddsa_priv,
                            &dka,
                            &secm_sig->eddsa_signature);

}


enum GNUNET_GenericReturnValue
TALER_exchange_secmod_cs_verify (
  const struct TALER_CsPubHashP *h_cs,
  const char *section_name,
  struct GNUNET_TIME_Timestamp start_sign,
  struct GNUNET_TIME_Relative duration,
  const struct TALER_SecurityModulePublicKeyP *secm_pub,
  const struct TALER_SecurityModuleSignatureP *secm_sig)
{
  struct TALER_DenominationKeyAnnouncementPS dka = {
    .purpose.purpose = htonl (TALER_SIGNATURE_SM_CS_DENOMINATION_KEY),
    .purpose.size = htonl (sizeof (dka)),
    .h_denom.hash = h_cs->hash,
    .anchor_time = GNUNET_TIME_timestamp_hton (start_sign),
    .duration_withdraw = GNUNET_TIME_relative_hton (duration)
  };

  GNUNET_CRYPTO_hash (section_name,
                      strlen (section_name) + 1,
                      &dka.h_section_name);
  return
    GNUNET_CRYPTO_eddsa_verify (TALER_SIGNATURE_SM_CS_DENOMINATION_KEY,
                                &dka,
                                &secm_sig->eddsa_signature,
                                &secm_pub->eddsa_pub);
}


/* end of secmod_signatures.c */