diff options
Diffstat (limited to 'src/util/crypto.c')
| -rw-r--r-- | src/util/crypto.c | 40 |
1 files changed, 30 insertions, 10 deletions
diff --git a/src/util/crypto.c b/src/util/crypto.c index 37810d40..b315cd31 100644 --- a/src/util/crypto.c +++ b/src/util/crypto.c @@ -195,16 +195,36 @@ TALER_cs_withdraw_nonce_derive (const struct struct TALER_CsNonce *nonce) { GNUNET_assert (GNUNET_YES == - GNUNET_CRYPTO_hkdf (nonce, - sizeof (*nonce), - GCRY_MD_SHA512, - GCRY_MD_SHA256, - "n", - strlen ("n"), - ps, - sizeof(*ps), - NULL, - 0)); + GNUNET_CRYPTO_kdf (nonce, + sizeof (*nonce), + "n", + strlen ("n"), + ps, + sizeof(*ps), + NULL, + 0)); +} + + +void +TALER_cs_refresh_nonce_derive ( + const struct TALER_PlanchetSecretsP *ps, + uint32_t coin_num_salt, + struct TALER_CsNonce *nonce) +{ + uint32_t be_salt = htonl (coin_num_salt); + + GNUNET_assert (GNUNET_YES == + GNUNET_CRYPTO_kdf (nonce, + sizeof (*nonce), + &be_salt, + sizeof (be_salt), + "refresh-n", // FIXME: value used in spec? + strlen ("refresh-n"), + ps, + sizeof(*ps), + NULL, + 0)); } |