protocol v12 changes (/recoup split, signature changes) plus database sharding plus O(n^2)=>O(n) worst-case complexity reduction on coin balance checks

1 files changed, 37 insertions, 0 deletions

diff --git a/src/include/taler_crypto_lib.h b/src/include/taler_crypto_lib.h
index 89e8697d6..03edb4462 100644
--- a/src/include/taler_crypto_lib.h
+++ b/src/include/taler_crypto_lib.h
@@ -1860,6 +1860,43 @@ TALER_wallet_recoup_sign (
   struct TALER_CoinSpendSignatureP *coin_sig);
 
 
+/**
+ * Verify recoup-refresh signature.
+ *
+ * @param h_denom_pub hash of the denomiantion public key of the coin
+ * @param coin_bks blinding factor used when withdrawing the coin
+ * @param requested_amount amount that is left to be recouped
+ * @param coin_pub coin key of the coin to be recouped
+ * @param coin_sig resulting signature
+ * @return #GNUNET_OK if the signature is valid
+ */
+enum GNUNET_GenericReturnValue
+TALER_wallet_recoup_refresh_verify (
+  const struct TALER_DenominationHash *h_denom_pub,
+  const union TALER_DenominationBlindingKeyP *coin_bks,
+  const struct TALER_Amount *requested_amount,
+  const struct TALER_CoinSpendPublicKeyP *coin_pub,
+  const struct TALER_CoinSpendSignatureP *coin_sig);
+
+
+/**
+ * Create recoup-refresh signature.
+ *
+ * @param h_denom_pub hash of the denomiantion public key of the coin
+ * @param coin_bks blinding factor used when withdrawing the coin
+ * @param requested_amount amount that is left to be recouped
+ * @param coin_priv coin key of the coin to be recouped
+ * @param coin_sig resulting signature
+ */
+void
+TALER_wallet_recoup_refresh_sign (
+  const struct TALER_DenominationHash *h_denom_pub,
+  const union TALER_DenominationBlindingKeyP *coin_bks,
+  const struct TALER_Amount *requested_amount,
+  const struct TALER_CoinSpendPrivateKeyP *coin_priv,
+  struct TALER_CoinSpendSignatureP *coin_sig);
+
+
 /* ********************* offline signing ************************** */