From 00d613728fdddf4f28e3c50cb2f70bfbba65e298 Mon Sep 17 00:00:00 2001 From: Christian Grothoff Date: Sat, 8 Aug 2015 19:52:05 +0200 Subject: completing TALER_MINT_refresh_melt implementation --- src/include/taler_crypto_lib.h | 17 +++++++++++++++++ 1 file changed, 17 insertions(+) (limited to 'src/include/taler_crypto_lib.h') diff --git a/src/include/taler_crypto_lib.h b/src/include/taler_crypto_lib.h index 4126894a1..5f1425077 100644 --- a/src/include/taler_crypto_lib.h +++ b/src/include/taler_crypto_lib.h @@ -468,6 +468,23 @@ TALER_link_decrypt_secret2 (const struct TALER_EncryptedLinkSecretP *secret_enc, struct TALER_LinkSecretP *secret); +/** + * Given the coin and the transfer private keys, compute the + * transfer secret. (Technically, we only need one of the two + * private keys, but the caller currently trivially only has + * the two private keys, so we derive one of the public keys + * internally to this function.) + * + * @param coin_priv coin key + * @param trans_priv transfer private key + * @param[out] computed transfer secret + */ +void +TALER_link_derive_transfer_secret (const struct TALER_CoinSpendPrivateKeyP *coin_priv, + const struct TALER_TransferPrivateKeyP *trans_priv, + struct TALER_TransferSecretP *ts); + + /** * Encrypt the shared @a secret to generate the encrypted link secret. * Also creates the transfer key. -- cgit v1.2.3