diff options
| -rw-r--r-- | src/mint-lib/mint_api_refresh.c | 71 |
1 files changed, 70 insertions, 1 deletions
diff --git a/src/mint-lib/mint_api_refresh.c b/src/mint-lib/mint_api_refresh.c index 5451ef4f..d9591a51 100644 --- a/src/mint-lib/mint_api_refresh.c +++ b/src/mint-lib/mint_api_refresh.c @@ -788,6 +788,31 @@ deserialize_melt_data (const char *buf, /** + * Setup information for a fresh coin. + * + * @param[out] fc value to initialize + * @param pk denomination information for the fresh coin + */ +static void +setup_fresh_coin (struct FreshCoin *fc, + const struct TALER_MINT_DenomPublicKey *pk) +{ + struct GNUNET_CRYPTO_EddsaPrivateKey *epk; + unsigned int len; + + epk = GNUNET_CRYPTO_eddsa_key_create (); + fc->coin_priv.eddsa_priv = *epk; + GNUNET_free (epk); + GNUNET_CRYPTO_random_block (GNUNET_CRYPTO_QUALITY_STRONG, + &fc->link_secret, + sizeof (struct TALER_LinkSecretP)); + len = GNUNET_CRYPTO_rsa_public_key_len (pk->key.rsa_public_key); + fc->blinding_key.rsa_blinding_key + = GNUNET_CRYPTO_rsa_blinding_key_create (len); +} + + +/** * Melt (partially spent) coins to obtain fresh coins that are * unlinkable to the original coin(s). Note that melting more * than one coin in a single request will make those coins linkable, @@ -842,9 +867,53 @@ TALER_MINT_refresh_prepare (unsigned int num_melts, { struct MeltData md; char *buf; + unsigned int i; + unsigned int j; + + for (i=0;i<TALER_CNC_KAPPA;i++) + GNUNET_CRYPTO_random_block (GNUNET_CRYPTO_QUALITY_STRONG, + &md.transfer_secrets[i], + sizeof (struct TALER_TransferSecretP)); + md.num_melted_coins = num_melts; + md.num_fresh_coins = fresh_pks_len; + md.melted_coins = GNUNET_new_array (num_melts, + struct MeltedCoin); + for (i=0;i<num_melts;i++) + { + md.melted_coins[i].coin_priv = melt_privs[i]; + md.melted_coins[i].melt_amount_with_fee = melt_amounts[i]; + md.melted_coins[i].fee_withdraw = melt_pks[i].fee_withdraw; + for (j=0;j<TALER_CNC_KAPPA;j++) + { + struct GNUNET_CRYPTO_EcdhePrivateKey *tpk; + + tpk = GNUNET_CRYPTO_ecdhe_key_create (); + md.melted_coins[i].transfer_priv[j].ecdhe_priv = *tpk; + GNUNET_free (tpk); + } + md.melted_coins[i].deposit_valid_until + = melt_pks[i].deposit_valid_until; + md.melted_coins[i].pub_key.rsa_public_key + = GNUNET_CRYPTO_rsa_public_key_dup (melt_pks[i].key.rsa_public_key); + md.melted_coins[i].sig.rsa_signature + = GNUNET_CRYPTO_rsa_signature_dup (melt_sigs[i].rsa_signature); + } + md.fresh_pks = GNUNET_new_array (fresh_pks_len, + struct TALER_DenominationPublicKey); + for (i=0;i<fresh_pks_len;i++) + md.fresh_pks[i].rsa_public_key + = GNUNET_CRYPTO_rsa_public_key_dup (fresh_pks[i].key.rsa_public_key); + for (i=0;i<TALER_CNC_KAPPA;i++) + { + md.fresh_coins[i] = GNUNET_new_array (fresh_pks_len, + struct FreshCoin); + for (j=0;j<fresh_pks_len;j++) + setup_fresh_coin (&md.fresh_coins[i][j], + &fresh_pks[j]); + } + // FIXME: compute melt_session_hash! GNUNET_break (0); // FIXME: not implemented - // FIXME: init 'md' here! buf = serialize_melt_data (&md, res_size); |