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author | Christian Grothoff <christian@grothoff.org> | 2021-12-16 20:18:44 +0100 |
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committer | Christian Grothoff <christian@grothoff.org> | 2021-12-16 20:18:44 +0100 |
commit | 1acc851deb38c52e4212823100eec8a00d5f385a (patch) | |
tree | 67d62b84291996a0def04e9cec16e06025a285ed /src/include/taler_crypto_lib.h | |
parent | 3b6a0dd5994b824ecbf246bb17e5be7611e89386 (diff) | |
download | exchange-1acc851deb38c52e4212823100eec8a00d5f385a.tar.xz |
-fix recoup ugliness
Diffstat (limited to 'src/include/taler_crypto_lib.h')
-rw-r--r-- | src/include/taler_crypto_lib.h | 57 |
1 files changed, 57 insertions, 0 deletions
diff --git a/src/include/taler_crypto_lib.h b/src/include/taler_crypto_lib.h index 0a59ab9e3..5292cd09b 100644 --- a/src/include/taler_crypto_lib.h +++ b/src/include/taler_crypto_lib.h @@ -1738,6 +1738,63 @@ TALER_wallet_link_verify ( const struct TALER_CoinSpendPublicKeyP *old_coin_pub, const struct TALER_CoinSpendSignatureP *coin_sig); + +/** + * Sign link data. + * + * @param h_denom_pub hash of the denomiantion public key of the new coin + * @param transfer_pub transfer public key + * @param coin_ev coin envelope + * @param coin_ev_size number of bytes in @a coin_ev + * @param old_coin_priv private key to sign with + * @param[out] coin_sig resulting signature + */ +void +TALER_wallet_link_sign (const struct TALER_DenominationHash *h_denom_pub, + const struct TALER_TransferPublicKeyP *transfer_pub, + const void *coin_ev, + size_t coin_ev_size, + const struct TALER_CoinSpendPrivateKeyP *old_coin_priv, + struct TALER_CoinSpendSignatureP *coin_sig); + + +/** + * Verify recoup 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_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 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_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 ************************** */ |