123 lines
4.5 KiB
C
123 lines
4.5 KiB
C
/*
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This file is part of TALER
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Copyright (C) 2020 Taler Systems SA
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TALER is free software; you can redistribute it and/or modify it under the
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terms of the GNU General Public License as published by the Free Software
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Foundation; either version 3, or (at your option) any later version.
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TALER is distributed in the hope that it will be useful, but WITHOUT ANY
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WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR
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A PARTICULAR PURPOSE. See the GNU General Public License for more details.
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You should have received a copy of the GNU General Public License along with
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TALER; see the file COPYING. If not, see <http://www.gnu.org/licenses/>
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*/
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/**
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* @file auditor_signatures.c
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* @brief Utility functions for Taler auditor signatures
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* @author Christian Grothoff
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*/
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#include "platform.h"
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#include "taler_util.h"
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#include "taler_signatures.h"
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void
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TALER_auditor_denom_validity_sign (
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const char *auditor_url,
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const struct TALER_DenominationHash *h_denom_pub,
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const struct TALER_MasterPublicKeyP *master_pub,
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struct GNUNET_TIME_Absolute stamp_start,
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struct GNUNET_TIME_Absolute stamp_expire_withdraw,
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struct GNUNET_TIME_Absolute stamp_expire_deposit,
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struct GNUNET_TIME_Absolute stamp_expire_legal,
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const struct TALER_Amount *coin_value,
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const struct TALER_Amount *fee_withdraw,
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const struct TALER_Amount *fee_deposit,
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const struct TALER_Amount *fee_refresh,
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const struct TALER_Amount *fee_refund,
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const struct TALER_AuditorPrivateKeyP *auditor_priv,
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struct TALER_AuditorSignatureP *auditor_sig)
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{
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struct TALER_ExchangeKeyValidityPS kv = {
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.purpose.purpose = htonl (TALER_SIGNATURE_AUDITOR_EXCHANGE_KEYS),
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.purpose.size = htonl (sizeof (kv)),
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.start = GNUNET_TIME_absolute_hton (stamp_start),
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.expire_withdraw = GNUNET_TIME_absolute_hton (stamp_expire_withdraw),
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.expire_deposit = GNUNET_TIME_absolute_hton (stamp_expire_deposit),
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.expire_legal = GNUNET_TIME_absolute_hton (stamp_expire_legal),
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.denom_hash = *h_denom_pub,
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.master = *master_pub,
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};
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TALER_amount_hton (&kv.value,
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coin_value);
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TALER_amount_hton (&kv.fee_withdraw,
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fee_withdraw);
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TALER_amount_hton (&kv.fee_deposit,
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fee_deposit);
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TALER_amount_hton (&kv.fee_refresh,
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fee_refresh);
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TALER_amount_hton (&kv.fee_refund,
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fee_refund);
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GNUNET_CRYPTO_hash (auditor_url,
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strlen (auditor_url) + 1,
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&kv.auditor_url_hash);
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GNUNET_CRYPTO_eddsa_sign (&auditor_priv->eddsa_priv,
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&kv,
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&auditor_sig->eddsa_sig);
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}
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enum GNUNET_GenericReturnValue
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TALER_auditor_denom_validity_verify (
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const char *auditor_url,
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const struct TALER_DenominationHash *h_denom_pub,
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const struct TALER_MasterPublicKeyP *master_pub,
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struct GNUNET_TIME_Absolute stamp_start,
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struct GNUNET_TIME_Absolute stamp_expire_withdraw,
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struct GNUNET_TIME_Absolute stamp_expire_deposit,
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struct GNUNET_TIME_Absolute stamp_expire_legal,
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const struct TALER_Amount *coin_value,
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const struct TALER_Amount *fee_withdraw,
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const struct TALER_Amount *fee_deposit,
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const struct TALER_Amount *fee_refresh,
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const struct TALER_Amount *fee_refund,
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const struct TALER_AuditorPublicKeyP *auditor_pub,
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const struct TALER_AuditorSignatureP *auditor_sig)
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{
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struct TALER_ExchangeKeyValidityPS kv = {
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.purpose.purpose = htonl (TALER_SIGNATURE_AUDITOR_EXCHANGE_KEYS),
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.purpose.size = htonl (sizeof (kv)),
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.start = GNUNET_TIME_absolute_hton (stamp_start),
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.expire_withdraw = GNUNET_TIME_absolute_hton (stamp_expire_withdraw),
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.expire_deposit = GNUNET_TIME_absolute_hton (stamp_expire_deposit),
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.expire_legal = GNUNET_TIME_absolute_hton (stamp_expire_legal),
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.denom_hash = *h_denom_pub,
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.master = *master_pub,
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};
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TALER_amount_hton (&kv.value,
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coin_value);
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TALER_amount_hton (&kv.fee_withdraw,
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fee_withdraw);
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TALER_amount_hton (&kv.fee_deposit,
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fee_deposit);
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TALER_amount_hton (&kv.fee_refresh,
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fee_refresh);
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TALER_amount_hton (&kv.fee_refund,
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fee_refund);
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GNUNET_CRYPTO_hash (auditor_url,
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strlen (auditor_url) + 1,
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&kv.auditor_url_hash);
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return
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GNUNET_CRYPTO_eddsa_verify (TALER_SIGNATURE_AUDITOR_EXCHANGE_KEYS,
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&kv,
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&auditor_sig->eddsa_sig,
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&auditor_pub->eddsa_pub);
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}
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/* end of auditor_signatures.c */
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