diff options
Diffstat (limited to 'src/util/denom.c')
| -rw-r--r-- | src/util/denom.c | 14 |
1 files changed, 14 insertions, 0 deletions
diff --git a/src/util/denom.c b/src/util/denom.c index 4382a9df3..b0982c008 100644 --- a/src/util/denom.c +++ b/src/util/denom.c @@ -170,6 +170,8 @@ TALER_denom_sig_unblind ( struct TALER_DenominationSignature *denom_sig, const struct TALER_BlindedDenominationSignature *bdenom_sig, const union TALER_DenominationBlindingKeyP *bks, + const struct TALER_CoinPubHash *c_hash, + const struct TALER_ExchangeWithdrawValues *alg_values, const struct TALER_DenominationPublicKey *denom_pub) { if (bdenom_sig->cipher != denom_pub->cipher) @@ -198,9 +200,21 @@ TALER_denom_sig_unblind ( case TALER_DENOMINATION_CS: { struct GNUNET_CRYPTO_CsBlindingSecret bs[2]; + struct GNUNET_CRYPTO_CsC c[2]; + struct TALER_DenominationCSPublicRPairP r_pub_blind; GNUNET_CRYPTO_cs_blinding_secrets_derive (&bks->nonce, bs); + GNUNET_CRYPTO_cs_calc_blinded_c ( + bs, + alg_values->details.cs_values.r_pub_pair.r_pub, + &denom_pub->details.cs_public_key, + &c_hash->hash, + sizeof(struct GNUNET_HashCode), + c, + r_pub_blind.r_pub); + denom_sig->details.cs_signature.r_point + = r_pub_blind.r_pub[bdenom_sig->details.blinded_cs_answer.b]; GNUNET_CRYPTO_cs_unblind (&bdenom_sig->details.blinded_cs_answer.s_scalar, &bs[bdenom_sig->details.blinded_cs_answer.b], &denom_sig->details.cs_signature.s_scalar); |