79 lines
2.6 KiB
C
79 lines
2.6 KiB
C
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/*
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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 merchant_signatures.c
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* @brief Utility functions for Taler merchant 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_merchant_refund_sign (
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const struct TALER_CoinSpendPublicKeyP *coin_pub,
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const struct TALER_PrivateContractHash *h_contract_terms,
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uint64_t rtransaction_id,
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const struct TALER_Amount *amount,
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const struct TALER_MerchantPrivateKeyP *merchant_priv,
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struct TALER_MerchantSignatureP *merchant_sig)
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{
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struct TALER_RefundRequestPS rr = {
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.purpose.purpose = htonl (TALER_SIGNATURE_MERCHANT_REFUND),
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.purpose.size = htonl (sizeof (rr)),
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.h_contract_terms = *h_contract_terms,
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.coin_pub = *coin_pub,
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.rtransaction_id = GNUNET_htonll (rtransaction_id)
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};
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TALER_amount_hton (&rr.refund_amount,
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amount);
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GNUNET_CRYPTO_eddsa_sign (&merchant_priv->eddsa_priv,
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&rr,
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&merchant_sig->eddsa_sig);
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}
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enum GNUNET_GenericReturnValue
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TALER_merchant_refund_verify (
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const struct TALER_CoinSpendPublicKeyP *coin_pub,
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const struct TALER_PrivateContractHash *h_contract_terms,
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uint64_t rtransaction_id,
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const struct TALER_Amount *amount,
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const struct TALER_MerchantPublicKeyP *merchant_pub,
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const struct TALER_MerchantSignatureP *merchant_sig)
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{
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struct TALER_RefundRequestPS rr = {
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.purpose.purpose = htonl (TALER_SIGNATURE_MERCHANT_REFUND),
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.purpose.size = htonl (sizeof (rr)),
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.h_contract_terms = *h_contract_terms,
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.coin_pub = *coin_pub,
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.rtransaction_id = GNUNET_htonll (rtransaction_id)
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};
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TALER_amount_hton (&rr.refund_amount,
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amount);
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return
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GNUNET_CRYPTO_eddsa_verify (TALER_SIGNATURE_MERCHANT_REFUND,
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&rr,
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&merchant_sig->eddsa_sig,
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&merchant_pub->eddsa_pub);
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}
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/* end of merchant_signatures.c */
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