From a17781ba8d5f875b5150e524174c5f144aa6c0ba Mon Sep 17 00:00:00 2001
From: Christian Grothoff <christian@grothoff.org>
Date: Sat, 4 Jun 2022 21:59:55 +0200
Subject: -more work on p2p payments and tests thereof

---
 src/util/wallet_signatures.c | 41 ++++++++++++++++++++++++-----------------
 1 file changed, 24 insertions(+), 17 deletions(-)

(limited to 'src/util/wallet_signatures.c')

diff --git a/src/util/wallet_signatures.c b/src/util/wallet_signatures.c
index 9c5669650..41e272eb0 100644
--- a/src/util/wallet_signatures.c
+++ b/src/util/wallet_signatures.c
@@ -1248,20 +1248,9 @@ TALER_wallet_econtract_upload_sign (
 }
 
 
-/**
- * Verify a signature over encrypted contract.
- *
- * @param econtract encrypted contract
- * @param econtract_size number of bytes in @a econtract
- * @param contract_pub public key for the DH-encryption
- * @param purse_pub purse’s public key
- * @param purse_sig the signature made with purpose #TALER_SIGNATURE_WALLET_PURSE_CREATE
- * @return #GNUNET_OK if the signature is valid
- */
 enum GNUNET_GenericReturnValue
-TALER_wallet_econtract_upload_verify (
-  const void *econtract,
-  size_t econtract_size,
+TALER_wallet_econtract_upload_verify2 (
+  const struct GNUNET_HashCode *h_econtract,
   const struct TALER_ContractDiffiePublicP *contract_pub,
   const struct TALER_PurseContractPublicKeyP *purse_pub,
   const struct TALER_PurseContractSignatureP *purse_sig)
@@ -1269,12 +1258,10 @@ TALER_wallet_econtract_upload_verify (
   struct TALER_PurseContractPS pc = {
     .purpose.size = htonl (sizeof (pc)),
     .purpose.purpose = htonl (TALER_SIGNATURE_WALLET_PURSE_ECONTRACT),
-    .contract_pub = *contract_pub
+    .contract_pub = *contract_pub,
+    .h_econtract = *h_econtract
   };
 
-  GNUNET_CRYPTO_hash (econtract,
-                      econtract_size,
-                      &pc.h_econtract);
   return GNUNET_CRYPTO_eddsa_verify_ (TALER_SIGNATURE_WALLET_PURSE_ECONTRACT,
                                       &pc.purpose,
                                       &purse_sig->eddsa_signature,
@@ -1282,4 +1269,24 @@ TALER_wallet_econtract_upload_verify (
 }
 
 
+enum GNUNET_GenericReturnValue
+TALER_wallet_econtract_upload_verify (
+  const void *econtract,
+  size_t econtract_size,
+  const struct TALER_ContractDiffiePublicP *contract_pub,
+  const struct TALER_PurseContractPublicKeyP *purse_pub,
+  const struct TALER_PurseContractSignatureP *purse_sig)
+{
+  struct GNUNET_HashCode h_econtract;
+
+  GNUNET_CRYPTO_hash (econtract,
+                      econtract_size,
+                      &h_econtract);
+  return TALER_wallet_econtract_upload_verify2 (&h_econtract,
+                                                contract_pub,
+                                                purse_pub,
+                                                purse_sig);
+}
+
+
 /* end of wallet_signatures.c */
-- 
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