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[taler-donau] 01/02: [util] verify and sign for charity
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gnunet |
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Subject: |
[taler-donau] 01/02: [util] verify and sign for charity |
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Date: |
Wed, 08 Nov 2023 00:41:08 +0100 |
This is an automated email from the git hooks/post-receive script.
lukas-matyja pushed a commit to branch master
in repository donau.
commit 13f59581eeb47ad73883c29bd2b82c081b585b5a
Author: Matyja Lukas Adam <lukas.matyja@students.bfh.ch>
AuthorDate: Wed Nov 8 00:35:22 2023 +0100
[util] verify and sign for charity
---
src/include/donau_crypto_lib.h | 49 ++++
src/include/donau_service.h | 2 +-
src/util/charity_signatures.c | 164 +++---------
src/util/donau_signatures.c | 547 -----------------------------------------
4 files changed, 84 insertions(+), 678 deletions(-)
diff --git a/src/include/donau_crypto_lib.h b/src/include/donau_crypto_lib.h
index 28ba454..eecb622 100644
--- a/src/include/donau_crypto_lib.h
+++ b/src/include/donau_crypto_lib.h
@@ -62,7 +62,17 @@ struct DONAU_CharityPublicKeyP
};
+/**
+ * Signing key for whole batches of BUDI-key-pairs. Used by a Charity.
+ */
+struct DONAU_CharityPrivateKeyP
+{
+ /**
+ * Donau uses EdDSA for BUDI-key-pair signing
+ */
+ struct GNUNET_CRYPTO_EddsaPrivateKey eddsa_priv;
+};
/**
* Hash of a donation unit public key
@@ -92,6 +102,7 @@ struct TALER_BlindedDonationUnitSignature
};
+
/**
* @brief Type of signature used by the donau for non-blind signatures.
*/
@@ -124,4 +135,42 @@ struct TALER_DONAU_BearerToken
*/
struct GNUNET_Uuid token;
};
+
+
+/* ********************* charity signing ************************** */
+
+
+/**
+ * Create charity signature approving to issue a donation part.
+ *
+ * @param num_bkp number of bkps
+ * @param bkp to be signed
+ * @param charity_priv private key of the charity
+ * @param[out] charity_sig where to write the signature
+ */
+void
+TALER_charity_blinded_unique_donation_identifier_key_pair_sign (
+ const unsigned int num_bkp,
+ const struct TALER_BlindedUniqueDonationIdentifierKeyPair *bkp[static
num_bkp],
+ const struct TALER_DONAU_CharityPrivateKeyP *charity_priv,
+ struct TALER_CharitySignatureP *charity_sig);
+
+
+/**
+ * Verify charity signature approving to issue a donation part.
+ *
+ * @param num_bkp number of bkps
+ * @param bkp array to verify
+ * @param charity_pub public key of the charity
+ * @param charity_sig where to write the signature
+ * @return #GNUNET_OK if the signature is valid
+ */
+enum GNUNET_GenericReturnValue
+TALER_charity_blinded_unique_donation_identifier_key_pair_verify (
+ const unsigned int num_bkp,
+ const struct TALER_BlindedUniqueDonationIdentifierKeyPair *bkp[static
num_bkp],
+ const struct TALER_DONAU_CharityPublicKeyP *charity_pub,
+ struct TALER_CharitySignatureP *charity_sig);
+
+
#endif
diff --git a/src/include/donau_service.h b/src/include/donau_service.h
index 0039aad..23e0a9c 100644
--- a/src/include/donau_service.h
+++ b/src/include/donau_service.h
@@ -597,7 +597,7 @@ struct TALER_DONAU_BatchIssueReceiptHandle *
TALER_DONAU_charity_issue_receipt (
struct GNUNET_CURL_Context *ctx,
const char *url,
- const struct TALER_DONAU_CharityPrivateKey *charity_priv,
+ const struct TALER_DONAU_CharityPrivateKeyP *charity_priv,
unsigned int num_bkp,
const struct TALER_BlindedUniqueDonationIdentifierKeyPair bkp[static
num_bkp],
TALER_DONAU_BatchIssueReceiptsCallback cb,
diff --git a/src/util/charity_signatures.c b/src/util/charity_signatures.c
index fcf603b..f95a3d0 100644
--- a/src/util/charity_signatures.c
+++ b/src/util/charity_signatures.c
@@ -18,10 +18,28 @@
* @brief Utility functions for Taler charity signatures
* @author Christian Grothoff
*/
-#include <taler/taler_util.h>
+#include "donau_util.h"
#include <taler/taler_signatures.h>
+void
+TALER_charity_blinded_unique_donation_identifier_key_pair_sign (
+ const unsigned int num_bkp,
+ const struct TALER_BlindedUniqueDonationIdentifierKeyPair *bkp[num_bkp],
+ const struct TALER_DONAU_CharityPrivateKeyP *charity_priv,
+ struct TALER_CharitySignatureP *charity_sig)
+{
+ struct TALER_BudiKeyPairTrackPS tps = {
+ .purpose.size = htonl (sizeof (bk[0])* num_bkp),
+ .purpose.purpose = htonl (TALER_SIGNATURE_CHARITY_TRACK_TRANSACTION),
+ .bkp = *bkp,
+ };
+
+ GNUNET_CRYPTO_eddsa_sign (&charity_priv->eddsa_priv,
+ &tps,
+ &charity_sig->eddsa_sig);
+}
+
GNUNET_NETWORK_STRUCT_BEGIN
/**
@@ -36,154 +54,40 @@ struct TALER_DepositTrackPS
struct GNUNET_CRYPTO_EccSignaturePurpose purpose;
/**
- * Hash over the proposal data of the contract for which this deposit is
made.
- */
- // struct TALER_PrivateContractHashP h_contract_terms GNUNET_PACKED;
-
- /**
- * Hash over the wiring information of the charity.
+ * num of bkps
*/
- // struct TALER_CharityWireHashP h_wire GNUNET_PACKED;
+ unsigned int num_bkp;
/**
- * The coin's public key. This is the value that must have been
+ * The BUDI-Key-Pair. It contains the BUDI value that must have been
* signed (blindly) by the Donau.
*/
- struct TALER_CoinSpendPublicKeyP coin_pub;
+ struct TALER_BlindedUniqueDonationIdentifierKeyPair *bkp[static num_bkp];
};
GNUNET_NETWORK_STRUCT_END
-/*
-void
-TALER_charity_deposit_sign (
- const struct TALER_PrivateContractHashP *h_contract_terms,
- const struct TALER_CharityWireHashP *h_wire,
- const struct TALER_CoinSpendPublicKeyP *coin_pub,
- const struct TALER_CharityPrivateKeyP *charity_priv,
- struct TALER_CharitySignatureP *charity_sig)
-{
- struct TALER_DepositTrackPS dtp = {
- .purpose.purpose = htonl (TALER_SIGNATURE_CHARITY_TRACK_TRANSACTION),
- .purpose.size = htonl (sizeof (dtp)),
- .h_contract_terms = *h_contract_terms,
- .h_wire = *h_wire,
- .coin_pub = *coin_pub
- };
-
- GNUNET_CRYPTO_eddsa_sign (&charity_priv->eddsa_priv,
- &dtp,
- &charity_sig->eddsa_sig);
-}*/
-
-/*
enum GNUNET_GenericReturnValue
-TALER_charity_deposit_verify (
- const struct TALER_CharityPublicKeyP *charity,
- const struct TALER_CoinSpendPublicKeyP *coin_pub,
- const struct TALER_PrivateContractHashP *h_contract_terms,
- const struct TALER_CharityWireHashP *h_wire,
- const struct TALER_CharitySignatureP *charity_sig)
+TALER_charity_blinded_unique_donation_identifier_key_pair_verify (
+ const unsigned int num_bkp,
+ const struct TALER_BlindedUniqueDonationIdentifierKeyPair *bkp[static
num_bkp],
+ const struct TALER_DONAU_CharityPublicKeyP *charity_pub,
+ struct TALER_CharitySignatureP *charity_sig)
{
- struct TALER_DepositTrackPS tps = {
- .purpose.size = htonl (sizeof (tps)),
- .purpose.purpose = htonl (TALER_SIGNATURE_CHARITY_TRACK_TRANSACTION),
- .coin_pub = *coin_pub,
- .h_contract_terms = *h_contract_terms,
- .h_wire = *h_wire
+ struct TALER_BudiKeyPairTrackPS tps = {
+ .purpose.size = htonl (sizeof (bk[0])* num_bkp),
+ .purpose.purpose = htonl (TALER_SIGNATURE_MERCHANT_TRACK_TRANSACTION),
+ .num_bkp = num_bkp,
+ .bkp = *bkp
};
return
GNUNET_CRYPTO_eddsa_verify (TALER_SIGNATURE_CHARITY_TRACK_TRANSACTION,
&tps,
&charity_sig->eddsa_sig,
- &charity->eddsa_pub);
-}*/
-
-/*
-enum GNUNET_GenericReturnValue
-TALER_charity_refund_verify (
- const struct TALER_CoinSpendPublicKeyP *coin_pub,
- const struct TALER_PrivateContractHashP *h_contract_terms,
- uint64_t rtransaction_id,
- const struct TALER_Amount *amount,
- const struct TALER_CharityPublicKeyP *charity_pub,
- const struct TALER_CharitySignatureP *charity_sig)
-{
- struct TALER_RefundRequestPS rr = {
- .purpose.purpose = htonl (TALER_SIGNATURE_CHARITY_REFUND),
- .purpose.size = htonl (sizeof (rr)),
- .h_contract_terms = *h_contract_terms,
- .coin_pub = *coin_pub,
- .rtransaction_id = GNUNET_htonll (rtransaction_id)
- };
-
- TALER_amount_hton (&rr.refund_amount,
- amount);
- return
- GNUNET_CRYPTO_eddsa_verify (TALER_SIGNATURE_CHARITY_REFUND,
- &rr,
- &charity_sig->eddsa_sig,
&charity_pub->eddsa_pub);
-}*/
-
-/**
- * Used by charities to return signed responses to /pay requests.
- * Currently only used to return 200 OK signed responses.
- */
-
-// struct TALER_PaymentResponsePS
-// {
- /**
- * Set to #TALER_SIGNATURE_CHARITY_PAYMENT_OK. Note that
- * unsuccessful payments are usually proven by some donau's signature.
- */
- // struct GNUNET_CRYPTO_EccSignaturePurpose purpose;
-
- /**
- * Hash of the proposal data associated with this confirmation
- */
- // struct TALER_PrivateContractHashP h_contract_terms;
-// };
-
-// void
-// TALER_charity_pay_sign (
- // const struct TALER_PrivateContractHashP *h_contract_terms,
- // const struct TALER_CharityPrivateKeyP *merch_priv,
- // struct GNUNET_CRYPTO_EddsaSignature *merch_sig)
-// {
- // struct TALER_PaymentResponsePS mr = {
- // .purpose.purpose = htonl (TALER_SIGNATURE_CHARITY_PAYMENT_OK),
- // .purpose.size = htonl (sizeof (mr)),
- // .h_contract_terms = *h_contract_terms
- // };
-
- // GNUNET_CRYPTO_eddsa_sign (&merch_priv->eddsa_priv,
- // &mr,
- // merch_sig);
-// }
-
-
-// enum GNUNET_GenericReturnValue
-// TALER_charity_pay_verify (
-// const struct TALER_PrivateContractHashP *h_contract_terms,
-// const struct TALER_CharityPublicKeyP *charity_pub,
-// const struct TALER_CharitySignatureP *charity_sig)
-// {
-// struct TALER_PaymentResponsePS pr = {
-// .purpose.purpose = htonl (TALER_SIGNATURE_CHARITY_PAYMENT_OK),
-// .purpose.size = htonl (sizeof (pr)),
-// .h_contract_terms = *h_contract_terms
-// };
-//
-// return
-// GNUNET_CRYPTO_eddsa_verify (TALER_SIGNATURE_CHARITY_PAYMENT_OK,
-// &pr,
-// &charity_sig->eddsa_sig,
-// &charity_pub->eddsa_pub);
-// }
-
+}
/* end of charity_signatures.c */
diff --git a/src/util/donau_signatures.c b/src/util/donau_signatures.c
index 23bf765..dd2c2bd 100644
--- a/src/util/donau_signatures.c
+++ b/src/util/donau_signatures.c
@@ -176,274 +176,6 @@ TALER_donau_online_deposit_confirmation_verify (
}
-GNUNET_NETWORK_STRUCT_BEGIN
-
-/**
- * @brief Format used to generate the signature on a request to refund
- * a coin into the account of the donor.
- */
-struct TALER_RefundConfirmationPS
-{
- /**
- * Purpose must be #TALER_SIGNATURE_DONAU_CONFIRM_REFUND.
- */
- struct GNUNET_CRYPTO_EccSignaturePurpose purpose;
-
- /**
- * Hash over the proposal data to identify the contract
- * which is being refunded.
- */
- struct TALER_PrivateContractHashP h_contract_terms GNUNET_PACKED;
-
- /**
- * The coin's public key. This is the value that must have been
- * signed (blindly) by the Donau.
- */
- struct TALER_CoinSpendPublicKeyP coin_pub;
-
- /**
- * The Charity's public key. Allows the charity to later refund
- * the transaction or to inquire about the wire transfer identifier.
- */
- struct TALER_CharityPublicKeyP charity;
-
- /**
- * Charity-generated transaction ID for the refund.
- */
- uint64_t rtransaction_id GNUNET_PACKED;
-
- /**
- * Amount to be refunded, including refund fee charged by the
- * donau to the donor.
- */
- struct TALER_AmountNBO refund_amount;
-};
-
-GNUNET_NETWORK_STRUCT_END
-
-
-enum TALER_ErrorCode
-TALER_donau_online_refund_confirmation_sign (
- TALER_DonauSignCallback scb,
- const struct TALER_PrivateContractHashP *h_contract_terms,
- const struct TALER_CoinSpendPublicKeyP *coin_pub,
- const struct TALER_CharityPublicKeyP *charity,
- uint64_t rtransaction_id,
- const struct TALER_Amount *refund_amount,
- struct TALER_DonauPublicKeyP *pub,
- struct TALER_DonauSignatureP *sig)
-{
- struct TALER_RefundConfirmationPS rc = {
- .purpose.purpose = htonl (TALER_SIGNATURE_DONAU_CONFIRM_REFUND),
- .purpose.size = htonl (sizeof (rc)),
- .h_contract_terms = *h_contract_terms,
- .coin_pub = *coin_pub,
- .charity = *charity,
- .rtransaction_id = GNUNET_htonll (rtransaction_id)
- };
-
- TALER_amount_hton (&rc.refund_amount,
- refund_amount);
- return scb (&rc.purpose,
- pub,
- sig);
-}
-
-
-enum GNUNET_GenericReturnValue
-TALER_donau_online_refund_confirmation_verify (
- const struct TALER_PrivateContractHashP *h_contract_terms,
- const struct TALER_CoinSpendPublicKeyP *coin_pub,
- const struct TALER_CharityPublicKeyP *charity,
- uint64_t rtransaction_id,
- const struct TALER_Amount *refund_amount,
- const struct TALER_DonauPublicKeyP *pub,
- const struct TALER_DonauSignatureP *sig)
-{
- struct TALER_RefundConfirmationPS rc = {
- .purpose.purpose = htonl (TALER_SIGNATURE_DONAU_CONFIRM_REFUND),
- .purpose.size = htonl (sizeof (rc)),
- .h_contract_terms = *h_contract_terms,
- .coin_pub = *coin_pub,
- .charity = *charity,
- .rtransaction_id = GNUNET_htonll (rtransaction_id)
- };
-
- TALER_amount_hton (&rc.refund_amount,
- refund_amount);
- if (GNUNET_OK !=
- GNUNET_CRYPTO_eddsa_verify (TALER_SIGNATURE_DONAU_CONFIRM_REFUND,
- &rc,
- &sig->eddsa_signature,
- &pub->eddsa_pub))
- {
- GNUNET_break_op (0);
- return GNUNET_SYSERR;
- }
- return GNUNET_OK;
-}
-
-
-GNUNET_NETWORK_STRUCT_BEGIN
-
-/**
- * @brief Format of the block signed by the Donau in response to a successful
- * "/refresh/melt" request. Hereby the donau affirms that all of the
- * coins were successfully melted. This also commits the donau to a
- * particular index to not be revealed during the refresh.
- */
-struct TALER_RefreshMeltConfirmationPS
-{
- /**
- * Purpose is #TALER_SIGNATURE_DONAU_CONFIRM_MELT. Signed
- * by a `struct TALER_DonauPublicKeyP` using EdDSA.
- */
- struct GNUNET_CRYPTO_EccSignaturePurpose purpose;
-
- /**
- * Commitment made in the /refresh/melt.
- */
- struct TALER_RefreshCommitmentP rc GNUNET_PACKED;
-
- /**
- * Index that the client will not have to reveal, in NBO.
- * Must be smaller than #TALER_CNC_KAPPA.
- */
- uint32_t noreveal_index GNUNET_PACKED;
-
-};
-
-GNUNET_NETWORK_STRUCT_END
-
-
-enum TALER_ErrorCode
-TALER_donau_online_melt_confirmation_sign (
- TALER_DonauSignCallback scb,
- const struct TALER_RefreshCommitmentP *rc,
- uint32_t noreveal_index,
- struct TALER_DonauPublicKeyP *pub,
- struct TALER_DonauSignatureP *sig)
-{
- struct TALER_RefreshMeltConfirmationPS confirm = {
- .purpose.purpose = htonl (TALER_SIGNATURE_DONAU_CONFIRM_MELT),
- .purpose.size = htonl (sizeof (confirm)),
- .rc = *rc,
- .noreveal_index = htonl (noreveal_index)
- };
-
- return scb (&confirm.purpose,
- pub,
- sig);
-}
-
-
-enum GNUNET_GenericReturnValue
-TALER_donau_online_melt_confirmation_verify (
- const struct TALER_RefreshCommitmentP *rc,
- uint32_t noreveal_index,
- const struct TALER_DonauPublicKeyP *donau_pub,
- const struct TALER_DonauSignatureP *donau_sig)
-{
- struct TALER_RefreshMeltConfirmationPS confirm = {
- .purpose.purpose = htonl (TALER_SIGNATURE_DONAU_CONFIRM_MELT),
- .purpose.size = htonl (sizeof (confirm)),
- .rc = *rc,
- .noreveal_index = htonl (noreveal_index)
- };
-
- return
- GNUNET_CRYPTO_eddsa_verify (TALER_SIGNATURE_DONAU_CONFIRM_MELT,
- &confirm,
- &donau_sig->eddsa_signature,
- &donau_pub->eddsa_pub);
-}
-
-
-GNUNET_NETWORK_STRUCT_BEGIN
-
-/**
- * @brief Format of the block signed by the Donau in response to a
- * successful "/reserves/$RESERVE_PUB/age-withdraw" request. Hereby the
- * donau affirms that the commitment along with the maximum age group and
- * the amount were accepted. This also commits the donau to a particular
- * index to not be revealed during the reveal.
- */
-struct TALER_AgeWithdrawConfirmationPS
-{
- /**
- * Purpose is #TALER_SIGNATURE_DONAU_CONFIRM_AGE_WITHDRAW. Signed by a
- * `struct TALER_DonauPublicKeyP` using EdDSA.
- */
- struct GNUNET_CRYPTO_EccSignaturePurpose purpose;
-
- /**
- * Commitment made in the /reserves/$RESERVE_PUB/age-withdraw.
- */
- struct TALER_AgeWithdrawCommitmentHashP h_commitment GNUNET_PACKED;
-
- /**
- * Index that the client will not have to reveal, in NBO.
- * Must be smaller than #TALER_CNC_KAPPA.
- */
- uint32_t noreveal_index GNUNET_PACKED;
-
-};
-
-GNUNET_NETWORK_STRUCT_END
-
-enum TALER_ErrorCode
-TALER_donau_online_age_withdraw_confirmation_sign (
- TALER_DonauSignCallback scb,
- const struct TALER_AgeWithdrawCommitmentHashP *h_commitment,
- uint32_t noreveal_index,
- struct TALER_DonauPublicKeyP *pub,
- struct TALER_DonauSignatureP *sig)
-{
-
- struct TALER_AgeWithdrawConfirmationPS confirm = {
- .purpose.purpose = htonl (TALER_SIGNATURE_DONAU_CONFIRM_AGE_WITHDRAW),
- .purpose.size = htonl (sizeof (confirm)),
- .h_commitment = *h_commitment,
- .noreveal_index = htonl (noreveal_index)
- };
-
- return scb (&confirm.purpose,
- pub,
- sig);
-}
-
-
-enum GNUNET_GenericReturnValue
-TALER_donau_online_age_withdraw_confirmation_verify (
- const struct TALER_AgeWithdrawCommitmentHashP *h_commitment,
- uint32_t noreveal_index,
- const struct TALER_DonauPublicKeyP *donau_pub,
- const struct TALER_DonauSignatureP *donau_sig)
-{
- struct TALER_AgeWithdrawConfirmationPS confirm = {
- .purpose.purpose = htonl (TALER_SIGNATURE_DONAU_CONFIRM_AGE_WITHDRAW),
- .purpose.size = htonl (sizeof (confirm)),
- .h_commitment = *h_commitment,
- .noreveal_index = htonl (noreveal_index)
- };
-
- if (GNUNET_OK !=
- GNUNET_CRYPTO_eddsa_verify (
- TALER_SIGNATURE_DONAU_CONFIRM_AGE_WITHDRAW,
- &confirm,
- &donau_sig->eddsa_signature,
- &donau_pub->eddsa_pub))
- {
- GNUNET_break_op (0);
- return GNUNET_SYSERR;
- }
- return GNUNET_OK;
-}
-
-
-/* TODO:oec: add signature for age-withdraw, age-reveal */
-
-
GNUNET_NETWORK_STRUCT_BEGIN
/**
@@ -473,7 +205,6 @@ struct TALER_DonauKeySetPS
GNUNET_NETWORK_STRUCT_END
-
enum TALER_ErrorCode
TALER_donau_online_key_set_sign (
TALER_DonauSignCallback2 scb,
@@ -886,201 +617,6 @@ TALER_donau_online_confirm_wire_verify (
&pub->eddsa_pub);
}
-
-GNUNET_NETWORK_STRUCT_BEGIN
-
-/**
- * Response by which the donau affirms that it will
- * refund a coin as part of the emergency /recoup
- * protocol. The recoup will go back to the bank
- * account that created the reserve.
- */
-struct TALER_RecoupConfirmationPS
-{
-
- /**
- * Purpose is #TALER_SIGNATURE_DONAU_CONFIRM_RECOUP
- */
- struct GNUNET_CRYPTO_EccSignaturePurpose purpose;
-
- /**
- * When did the donau receive the recoup request?
- * Indirectly determines when the wire transfer is (likely)
- * to happen.
- */
- struct GNUNET_TIME_TimestampNBO timestamp;
-
- /**
- * How much of the coin's value will the donau transfer?
- * (Needed in case the coin was partially spent.)
- */
- struct TALER_AmountNBO recoup_amount;
-
- /**
- * Public key of the coin.
- */
- struct TALER_CoinSpendPublicKeyP coin_pub;
-
- /**
- * Public key of the reserve that will receive the recoup.
- */
- struct TALER_ReservePublicKeyP reserve_pub;
-};
-
-GNUNET_NETWORK_STRUCT_END
-
-
-enum TALER_ErrorCode
-TALER_donau_online_confirm_recoup_sign (
- TALER_DonauSignCallback scb,
- struct GNUNET_TIME_Timestamp timestamp,
- const struct TALER_Amount *recoup_amount,
- const struct TALER_CoinSpendPublicKeyP *coin_pub,
- const struct TALER_ReservePublicKeyP *reserve_pub,
- struct TALER_DonauPublicKeyP *pub,
- struct TALER_DonauSignatureP *sig)
-{
- struct TALER_RecoupConfirmationPS pc = {
- .purpose.size = htonl (sizeof (pc)),
- .purpose.purpose = htonl (TALER_SIGNATURE_DONAU_CONFIRM_RECOUP),
- .timestamp = GNUNET_TIME_timestamp_hton (timestamp),
- .coin_pub = *coin_pub,
- .reserve_pub = *reserve_pub
- };
-
- TALER_amount_hton (&pc.recoup_amount,
- recoup_amount);
- return scb (&pc.purpose,
- pub,
- sig);
-}
-
-
-enum GNUNET_GenericReturnValue
-TALER_donau_online_confirm_recoup_verify (
- struct GNUNET_TIME_Timestamp timestamp,
- const struct TALER_Amount *recoup_amount,
- const struct TALER_CoinSpendPublicKeyP *coin_pub,
- const struct TALER_ReservePublicKeyP *reserve_pub,
- const struct TALER_DonauPublicKeyP *pub,
- const struct TALER_DonauSignatureP *sig)
-{
- struct TALER_RecoupConfirmationPS pc = {
- .purpose.size = htonl (sizeof (pc)),
- .purpose.purpose = htonl (TALER_SIGNATURE_DONAU_CONFIRM_RECOUP),
- .timestamp = GNUNET_TIME_timestamp_hton (timestamp),
- .coin_pub = *coin_pub,
- .reserve_pub = *reserve_pub
- };
-
- TALER_amount_hton (&pc.recoup_amount,
- recoup_amount);
- return
- GNUNET_CRYPTO_eddsa_verify (TALER_SIGNATURE_DONAU_CONFIRM_RECOUP,
- &pc,
- &sig->eddsa_signature,
- &pub->eddsa_pub);
-}
-
-
-GNUNET_NETWORK_STRUCT_BEGIN
-
-/**
- * Response by which the donau affirms that it will refund a refreshed coin
- * as part of the emergency /recoup protocol. The recoup will go back to the
- * old coin's balance.
- */
-struct TALER_RecoupRefreshConfirmationPS
-{
-
- /**
- * Purpose is #TALER_SIGNATURE_DONAU_CONFIRM_RECOUP_REFRESH
- */
- struct GNUNET_CRYPTO_EccSignaturePurpose purpose;
-
- /**
- * When did the donau receive the recoup request?
- * Indirectly determines when the wire transfer is (likely)
- * to happen.
- */
- struct GNUNET_TIME_TimestampNBO timestamp;
-
- /**
- * How much of the coin's value will the donau transfer?
- * (Needed in case the coin was partially spent.)
- */
- struct TALER_AmountNBO recoup_amount;
-
- /**
- * Public key of the refreshed coin.
- */
- struct TALER_CoinSpendPublicKeyP coin_pub;
-
- /**
- * Public key of the old coin that will receive the recoup.
- */
- struct TALER_CoinSpendPublicKeyP old_coin_pub;
-};
-
-GNUNET_NETWORK_STRUCT_END
-
-
-enum TALER_ErrorCode
-TALER_donau_online_confirm_recoup_refresh_sign (
- TALER_DonauSignCallback scb,
- struct GNUNET_TIME_Timestamp timestamp,
- const struct TALER_Amount *recoup_amount,
- const struct TALER_CoinSpendPublicKeyP *coin_pub,
- const struct TALER_CoinSpendPublicKeyP *old_coin_pub,
- struct TALER_DonauPublicKeyP *pub,
- struct TALER_DonauSignatureP *sig)
-{
- struct TALER_RecoupRefreshConfirmationPS pc = {
- .purpose.purpose = htonl (
- TALER_SIGNATURE_DONAU_CONFIRM_RECOUP_REFRESH),
- .purpose.size = htonl (sizeof (pc)),
- .timestamp = GNUNET_TIME_timestamp_hton (timestamp),
- .coin_pub = *coin_pub,
- .old_coin_pub = *old_coin_pub
- };
-
- TALER_amount_hton (&pc.recoup_amount,
- recoup_amount);
- return scb (&pc.purpose,
- pub,
- sig);
-}
-
-
-enum GNUNET_GenericReturnValue
-TALER_donau_online_confirm_recoup_refresh_verify (
- struct GNUNET_TIME_Timestamp timestamp,
- const struct TALER_Amount *recoup_amount,
- const struct TALER_CoinSpendPublicKeyP *coin_pub,
- const struct TALER_CoinSpendPublicKeyP *old_coin_pub,
- const struct TALER_DonauPublicKeyP *pub,
- const struct TALER_DonauSignatureP *sig)
-{
- struct TALER_RecoupRefreshConfirmationPS pc = {
- .purpose.purpose = htonl (
- TALER_SIGNATURE_DONAU_CONFIRM_RECOUP_REFRESH),
- .purpose.size = htonl (sizeof (pc)),
- .timestamp = GNUNET_TIME_timestamp_hton (timestamp),
- .coin_pub = *coin_pub,
- .old_coin_pub = *old_coin_pub
- };
-
- TALER_amount_hton (&pc.recoup_amount,
- recoup_amount);
-
- return
- GNUNET_CRYPTO_eddsa_verify (TALER_SIGNATURE_DONAU_CONFIRM_RECOUP_REFRESH,
- &pc,
- &sig->eddsa_signature,
- &pub->eddsa_pub);
-}
-
-
GNUNET_NETWORK_STRUCT_BEGIN
/**
@@ -1471,96 +1007,13 @@ TALER_donau_online_purse_created_verify (
GNUNET_NETWORK_STRUCT_BEGIN
-/**
- * Response by which the donau affirms that it has
- * received funds deposited into a purse.
- */
-struct TALER_CoinPurseRefundConfirmationPS
-{
-
- /**
- * Purpose is #TALER_SIGNATURE_DONAU_CONFIRM_PURSE_REFUND
- */
- struct GNUNET_CRYPTO_EccSignaturePurpose purpose;
-
- /**
- * Public key of the purse.
- */
- struct TALER_PurseContractPublicKeyP purse_pub;
-
- /**
- * Public key of the coin.
- */
- struct TALER_CoinSpendPublicKeyP coin_pub;
-
- /**
- * How much will be refunded to the purse.
- */
- struct TALER_AmountNBO refunded_amount;
- /**
- * How much was the refund fee.
- */
- struct TALER_AmountNBO refund_fee;
-
-};
GNUNET_NETWORK_STRUCT_END
-enum TALER_ErrorCode
-TALER_donau_online_purse_refund_sign (
- TALER_DonauSignCallback scb,
- const struct TALER_Amount *amount_without_fee,
- const struct TALER_Amount *refund_fee,
- const struct TALER_CoinSpendPublicKeyP *coin_pub,
- const struct TALER_PurseContractPublicKeyP *purse_pub,
- struct TALER_DonauPublicKeyP *pub,
- struct TALER_DonauSignatureP *sig)
-{
- struct TALER_CoinPurseRefundConfirmationPS dc = {
- .purpose.purpose = htonl (TALER_SIGNATURE_DONAU_CONFIRM_PURSE_REFUND),
- .purpose.size = htonl (sizeof (dc)),
- .coin_pub = *coin_pub,
- .purse_pub = *purse_pub,
- };
-
- TALER_amount_hton (&dc.refunded_amount,
- amount_without_fee);
- TALER_amount_hton (&dc.refund_fee,
- refund_fee);
- return scb (&dc.purpose,
- pub,
- sig);
-}
-
-enum GNUNET_GenericReturnValue
-TALER_donau_online_purse_refund_verify (
- const struct TALER_Amount *amount_without_fee,
- const struct TALER_Amount *refund_fee,
- const struct TALER_CoinSpendPublicKeyP *coin_pub,
- const struct TALER_PurseContractPublicKeyP *purse_pub,
- const struct TALER_DonauPublicKeyP *pub,
- const struct TALER_DonauSignatureP *sig)
-{
- struct TALER_CoinPurseRefundConfirmationPS dc = {
- .purpose.purpose = htonl (TALER_SIGNATURE_DONAU_CONFIRM_PURSE_REFUND),
- .purpose.size = htonl (sizeof (dc)),
- .coin_pub = *coin_pub,
- .purse_pub = *purse_pub,
- };
- TALER_amount_hton (&dc.refunded_amount,
- amount_without_fee);
- TALER_amount_hton (&dc.refund_fee,
- refund_fee);
- return
- GNUNET_CRYPTO_eddsa_verify (TALER_SIGNATURE_DONAU_CONFIRM_PURSE_REFUND,
- &dc,
- &sig->eddsa_signature,
- &pub->eddsa_pub);
-}
GNUNET_NETWORK_STRUCT_BEGIN
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