70 lines
2.5 KiB
C
70 lines
2.5 KiB
C
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/*
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This file is part of TALER
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Copyright (C) 2021 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 exchange_signatures.c
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* @brief Utility functions for Taler security module 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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enum GNUNET_GenericReturnValue
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TALER_exchange_deposit_confirm_verify (
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const struct TALER_PrivateContractHash *h_contract_terms,
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const struct TALER_MerchantWireHash *h_wire,
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const struct TALER_ExtensionContractHash *h_extensions,
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struct GNUNET_TIME_Absolute exchange_timestamp,
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struct GNUNET_TIME_Absolute wire_deadline,
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struct GNUNET_TIME_Absolute refund_deadline,
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const struct TALER_Amount *amount_without_fee,
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const struct TALER_CoinSpendPublicKeyP *coin_pub,
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const struct TALER_MerchantPublicKeyP *merchant_pub,
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const struct TALER_ExchangePublicKeyP *exchange_pub,
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const struct TALER_ExchangeSignatureP *exchange_sig)
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{
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struct TALER_DepositConfirmationPS dcs = {
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.purpose.purpose = htonl (TALER_SIGNATURE_EXCHANGE_CONFIRM_DEPOSIT),
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.purpose.size = htonl (sizeof (struct TALER_DepositConfirmationPS)),
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.h_contract_terms = *h_contract_terms,
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.h_wire = *h_wire,
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.exchange_timestamp = GNUNET_TIME_absolute_hton (exchange_timestamp),
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.wire_deadline = GNUNET_TIME_absolute_hton (wire_deadline),
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.refund_deadline = GNUNET_TIME_absolute_hton (refund_deadline),
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.coin_pub = *coin_pub,
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.merchant_pub = *merchant_pub
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};
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if (NULL != h_extensions)
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dcs.h_extensions = *h_extensions;
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TALER_amount_hton (&dcs.amount_without_fee,
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amount_without_fee);
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if (GNUNET_OK !=
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GNUNET_CRYPTO_eddsa_verify (TALER_SIGNATURE_EXCHANGE_CONFIRM_DEPOSIT,
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&dcs,
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&exchange_sig->eddsa_signature,
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&exchange_pub->eddsa_pub))
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{
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GNUNET_break_op (0);
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return GNUNET_SYSERR;
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}
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return GNUNET_OK;
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}
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/* end of exchange_signatures.c */
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