127 lines
4.2 KiB
C
127 lines
4.2 KiB
C
/*
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This file is part of TALER
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Copyright (C) 2018 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 util/crypto_wire.c
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* @brief functions for making and verifying /wire account signatures
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* @author Christian Grothoff <christian@grothoff.org>
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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_wire_signature_check (
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const char *payto_uri,
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const struct TALER_MasterPublicKeyP *master_pub,
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const struct TALER_MasterSignatureP *master_sig)
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{
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struct TALER_MasterWireDetailsPS wd = {
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.purpose.purpose = htonl (TALER_SIGNATURE_MASTER_WIRE_DETAILS),
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.purpose.size = htonl (sizeof (wd))
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};
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TALER_payto_hash (payto_uri,
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&wd.h_wire_details);
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return GNUNET_CRYPTO_eddsa_verify (TALER_SIGNATURE_MASTER_WIRE_DETAILS,
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&wd,
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&master_sig->eddsa_signature,
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&master_pub->eddsa_pub);
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}
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void
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TALER_exchange_wire_signature_make (
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const char *payto_uri,
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const struct TALER_MasterPrivateKeyP *master_priv,
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struct TALER_MasterSignatureP *master_sig)
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{
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struct TALER_MasterWireDetailsPS wd = {
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.purpose.purpose = htonl (TALER_SIGNATURE_MASTER_WIRE_DETAILS),
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.purpose.size = htonl (sizeof (wd))
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};
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TALER_payto_hash (payto_uri,
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&wd.h_wire_details);
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GNUNET_CRYPTO_eddsa_sign (&master_priv->eddsa_priv,
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&wd,
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&master_sig->eddsa_signature);
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}
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void
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TALER_merchant_wire_signature_hash (const char *payto_uri,
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const struct TALER_WireSaltP *salt,
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struct TALER_MerchantWireHash *hc)
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{
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GNUNET_assert (GNUNET_YES ==
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GNUNET_CRYPTO_kdf (hc,
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sizeof (*hc),
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salt,
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sizeof (*salt),
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payto_uri,
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strlen (payto_uri) + 1,
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"merchant-wire-signature",
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strlen ("merchant-wire-signature"),
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NULL, 0));
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}
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enum GNUNET_GenericReturnValue
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TALER_merchant_wire_signature_check (
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const char *payto_uri,
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const struct TALER_WireSaltP *salt,
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const struct TALER_MerchantPublicKeyP *merch_pub,
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const struct TALER_MerchantSignatureP *merch_sig)
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{
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struct TALER_MerchantWireDetailsPS wd = {
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.purpose.purpose = htonl (TALER_SIGNATURE_MERCHANT_WIRE_DETAILS),
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.purpose.size = htonl (sizeof (wd))
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};
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TALER_merchant_wire_signature_hash (payto_uri,
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salt,
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&wd.h_wire_details);
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return GNUNET_CRYPTO_eddsa_verify (TALER_SIGNATURE_MERCHANT_WIRE_DETAILS,
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&wd,
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&merch_sig->eddsa_sig,
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&merch_pub->eddsa_pub);
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}
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void
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TALER_merchant_wire_signature_make (
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const char *payto_uri,
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const struct TALER_WireSaltP *salt,
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const struct TALER_MerchantPrivateKeyP *merch_priv,
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struct TALER_MerchantSignatureP *merch_sig)
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{
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struct TALER_MerchantWireDetailsPS wd = {
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.purpose.purpose = htonl (TALER_SIGNATURE_MERCHANT_WIRE_DETAILS),
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.purpose.size = htonl (sizeof (wd))
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};
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TALER_merchant_wire_signature_hash (payto_uri,
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salt,
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&wd.h_wire_details);
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GNUNET_CRYPTO_eddsa_sign (&merch_priv->eddsa_priv,
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&wd,
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&merch_sig->eddsa_sig);
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}
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/* end of crypto_wire.c */
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