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Diffstat (limited to 'src/exchange-lib/exchange_api_refresh.c')
-rw-r--r--src/exchange-lib/exchange_api_refresh.c119
1 files changed, 45 insertions, 74 deletions
diff --git a/src/exchange-lib/exchange_api_refresh.c b/src/exchange-lib/exchange_api_refresh.c
index 510b6e40..305747f6 100644
--- a/src/exchange-lib/exchange_api_refresh.c
+++ b/src/exchange-lib/exchange_api_refresh.c
@@ -236,18 +236,16 @@ free_melted_coin (struct MeltedCoin *mc)
static void
free_melt_data (struct MeltData *md)
{
- unsigned int i;
-
free_melted_coin (&md->melted_coin);
if (NULL != md->fresh_pks)
{
- for (i=0;i<md->num_fresh_coins;i++)
+ for (unsigned int i=0;i<md->num_fresh_coins;i++)
if (NULL != md->fresh_pks[i].rsa_public_key)
GNUNET_CRYPTO_rsa_public_key_free (md->fresh_pks[i].rsa_public_key);
GNUNET_free (md->fresh_pks);
}
- for (i=0;i<TALER_CNC_KAPPA;i++)
+ for (unsigned int i=0;i<TALER_CNC_KAPPA;i++)
GNUNET_free (md->fresh_coins[i]);
/* Finally, clean up a bit...
(NOTE: compilers might optimize this away, so this is
@@ -600,8 +598,6 @@ deserialize_melt_data (const char *buf,
{
struct MeltData *md;
struct MeltDataP mdp;
- unsigned int i;
- unsigned int j;
size_t off;
int ok;
@@ -615,7 +611,7 @@ deserialize_melt_data (const char *buf,
md->num_fresh_coins = ntohs (mdp.num_fresh_coins);
md->fresh_pks = GNUNET_new_array (md->num_fresh_coins,
struct TALER_DenominationPublicKey);
- for (i=0;i<TALER_CNC_KAPPA;i++)
+ for (unsigned int i=0;i<TALER_CNC_KAPPA;i++)
md->fresh_coins[i] = GNUNET_new_array (md->num_fresh_coins,
struct TALER_PlanchetSecretsP);
off = sizeof (struct MeltDataP);
@@ -624,14 +620,14 @@ deserialize_melt_data (const char *buf,
&buf[off],
buf_size - off,
&ok);
- for (i=0;(i<md->num_fresh_coins)&&(GNUNET_YES == ok);i++)
+ for (unsigned int i=0;(i<md->num_fresh_coins)&&(GNUNET_YES == ok);i++)
off += deserialize_denomination_key (&md->fresh_pks[i],
&buf[off],
buf_size - off,
&ok);
- for (i=0;i<TALER_CNC_KAPPA;i++)
- for(j=0;(j<md->num_fresh_coins)&&(GNUNET_YES == ok);j++)
+ for (unsigned int i=0;i<TALER_CNC_KAPPA;i++)
+ for (unsigned int j=0;(j<md->num_fresh_coins)&&(GNUNET_YES == ok);j++)
off += deserialize_fresh_coin (&md->fresh_coins[i][j],
&buf[off],
buf_size - off,
@@ -704,8 +700,6 @@ TALER_EXCHANGE_refresh_prepare (const struct TALER_CoinSpendPrivateKeyP *melt_pr
{
struct MeltData md;
char *buf;
- unsigned int i;
- unsigned int j;
struct GNUNET_HashContext *hash_context;
struct TALER_Amount total;
struct TALER_CoinSpendPublicKeyP coin_pub;
@@ -715,7 +709,7 @@ TALER_EXCHANGE_refresh_prepare (const struct TALER_CoinSpendPrivateKeyP *melt_pr
&coin_pub.eddsa_pub);
hash_context = GNUNET_CRYPTO_hash_context_start ();
/* build up melt data structure */
- for (i=0;i<TALER_CNC_KAPPA;i++)
+ for (unsigned int i=0;i<TALER_CNC_KAPPA;i++)
{
struct GNUNET_CRYPTO_EcdhePrivateKey *tpk;
struct TALER_TransferPublicKeyP tp;
@@ -747,18 +741,18 @@ TALER_EXCHANGE_refresh_prepare (const struct TALER_CoinSpendPrivateKeyP *melt_pr
= GNUNET_CRYPTO_rsa_signature_dup (melt_sig->rsa_signature);
md.fresh_pks = GNUNET_new_array (fresh_pks_len,
struct TALER_DenominationPublicKey);
- for (i=0;i<fresh_pks_len;i++)
+ for (unsigned int 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++)
+ for (unsigned int i=0;i<TALER_CNC_KAPPA;i++)
{
md.fresh_coins[i] = GNUNET_new_array (fresh_pks_len,
struct TALER_PlanchetSecretsP);
- for (j=0;j<fresh_pks_len;j++)
+ for (unsigned int j=0;j<fresh_pks_len;j++)
{
TALER_planchet_setup_refresh (&trans_sec[i],
- j,
- &md.fresh_coins[i][j]);
+ j,
+ &md.fresh_coins[i][j]);
}
}
@@ -766,7 +760,7 @@ TALER_EXCHANGE_refresh_prepare (const struct TALER_CoinSpendPrivateKeyP *melt_pr
GNUNET_assert (GNUNET_OK ==
TALER_amount_get_zero (melt_amount->currency,
&total));
- for (j=0;j<fresh_pks_len;j++)
+ for (unsigned int j=0;j<fresh_pks_len;j++)
{
if ( (GNUNET_OK !=
TALER_amount_add (&total,
@@ -795,7 +789,7 @@ TALER_EXCHANGE_refresh_prepare (const struct TALER_CoinSpendPrivateKeyP *melt_pr
/* next, add all of the hashes from the denomination keys to the
hash_context */
- for (i=0;i<fresh_pks_len;i++)
+ for (unsigned int i=0;i<fresh_pks_len;i++)
{
char *buf;
size_t buf_size;
@@ -820,28 +814,18 @@ TALER_EXCHANGE_refresh_prepare (const struct TALER_CoinSpendPrivateKeyP *melt_pr
sizeof (struct TALER_AmountNBO));
}
- for (i = 0; i < TALER_CNC_KAPPA; i++)
+ for (unsigned int i = 0; i < TALER_CNC_KAPPA; i++)
{
- for (j = 0; j < fresh_pks_len; j++)
+ for (unsigned int j = 0; j < fresh_pks_len; j++)
{
const struct TALER_PlanchetSecretsP *fc; /* coin this is about */
- struct TALER_CoinSpendPublicKeyP coin_pub;
- struct GNUNET_HashCode coin_hash;
- char *coin_ev; /* blinded message to be signed (in envelope) for each coin */
- size_t coin_ev_size;
+ struct TALER_PlanchetDetail pd;
fc = &md.fresh_coins[i][j];
- GNUNET_CRYPTO_eddsa_key_get_public (&fc->coin_priv.eddsa_priv,
- &coin_pub.eddsa_pub);
- GNUNET_CRYPTO_hash (&coin_pub.eddsa_pub,
- sizeof (struct GNUNET_CRYPTO_EcdsaPublicKey),
- &coin_hash);
- if (GNUNET_YES !=
- GNUNET_CRYPTO_rsa_blind (&coin_hash,
- &fc->blinding_key.bks,
- md.fresh_pks[j].rsa_public_key,
- &coin_ev,
- &coin_ev_size))
+ if (GNUNET_OK !=
+ TALER_planchet_prepare (&md.fresh_pks[j],
+ fc,
+ &pd))
{
GNUNET_break_op (0);
GNUNET_CRYPTO_hash_context_abort (hash_context);
@@ -849,9 +833,9 @@ TALER_EXCHANGE_refresh_prepare (const struct TALER_CoinSpendPrivateKeyP *melt_pr
return NULL;
}
GNUNET_CRYPTO_hash_context_read (hash_context,
- coin_ev,
- coin_ev_size);
- GNUNET_free (coin_ev);
+ pd.coin_ev,
+ pd.coin_ev_size);
+ GNUNET_free (pd.coin_ev);
}
}
GNUNET_CRYPTO_hash_context_finish (hash_context,
@@ -1294,22 +1278,12 @@ TALER_EXCHANGE_refresh_melt (struct TALER_EXCHANGE_Handle *exchange,
for (i=0;i<md->num_fresh_coins;i++)
{
const struct TALER_PlanchetSecretsP *fc = &md->fresh_coins[j][i];
- struct TALER_CoinSpendPublicKeyP coin_pub;
- struct GNUNET_HashCode coin_hash;
- char *coin_ev; /* blinded message to be signed (in envelope) for each coin */
- size_t coin_ev_size;
-
- GNUNET_CRYPTO_eddsa_key_get_public (&fc->coin_priv.eddsa_priv,
- &coin_pub.eddsa_pub);
- GNUNET_CRYPTO_hash (&coin_pub.eddsa_pub,
- sizeof (struct GNUNET_CRYPTO_EcdsaPublicKey),
- &coin_hash);
- if (GNUNET_YES !=
- GNUNET_CRYPTO_rsa_blind (&coin_hash,
- &fc->blinding_key.bks,
- md->fresh_pks[i].rsa_public_key,
- &coin_ev,
- &coin_ev_size))
+ struct TALER_PlanchetDetail pd;
+
+ if (GNUNET_OK !=
+ TALER_planchet_prepare (&md->fresh_pks[i],
+ fc,
+ &pd))
{
/* This should have been noticed during the preparation stage. */
GNUNET_break (0);
@@ -1322,9 +1296,9 @@ TALER_EXCHANGE_refresh_melt (struct TALER_EXCHANGE_Handle *exchange,
}
GNUNET_assert (0 ==
json_array_append_new (tmp,
- GNUNET_JSON_from_data (coin_ev,
- coin_ev_size)));
- GNUNET_free (coin_ev);
+ GNUNET_JSON_from_data (pd.coin_ev,
+ pd.coin_ev_size)));
+ GNUNET_free (pd.coin_ev);
}
GNUNET_assert (0 ==
json_array_append_new (coin_evs,
@@ -1510,13 +1484,13 @@ refresh_reveal_ok (struct TALER_EXCHANGE_RefreshRevealHandle *rrh,
struct TALER_DenominationPublicKey *pk;
json_t *jsonai;
struct GNUNET_CRYPTO_RsaSignature *blind_sig;
- struct GNUNET_CRYPTO_RsaSignature *sig;
struct TALER_CoinSpendPublicKeyP coin_pub;
struct GNUNET_HashCode coin_hash;
struct GNUNET_JSON_Specification spec[] = {
GNUNET_JSON_spec_rsa_signature ("ev_sig", &blind_sig),
GNUNET_JSON_spec_end()
};
+ struct TALER_FreshCoin coin;
fc = &rrh->md->fresh_coins[rrh->noreveal_index][i];
pk = &rrh->md->fresh_pks[i];
@@ -1533,31 +1507,28 @@ refresh_reveal_ok (struct TALER_EXCHANGE_RefreshRevealHandle *rrh,
return GNUNET_SYSERR;
}
- /* unblind the signature */
- sig = GNUNET_CRYPTO_rsa_unblind (blind_sig,
- &fc->blinding_key.bks,
- pk->rsa_public_key);
- GNUNET_CRYPTO_rsa_signature_free (blind_sig);
-
- /* verify the signature */
+ /* needed to verify the signature, and we didn't store it earlier,
+ hence recomputing it here... */
GNUNET_CRYPTO_eddsa_key_get_public (&fc->coin_priv.eddsa_priv,
&coin_pub.eddsa_pub);
GNUNET_CRYPTO_hash (&coin_pub.eddsa_pub,
sizeof (struct GNUNET_CRYPTO_EcdsaPublicKey),
&coin_hash);
-
if (GNUNET_OK !=
- GNUNET_CRYPTO_rsa_verify (&coin_hash,
- sig,
- pk->rsa_public_key))
+ TALER_planchet_to_coin (pk,
+ blind_sig,
+ fc,
+ &coin_hash,
+ &coin))
{
GNUNET_break_op (0);
- GNUNET_CRYPTO_rsa_signature_free (sig);
+ GNUNET_CRYPTO_rsa_signature_free (blind_sig);
GNUNET_JSON_parse_free (outer_spec);
return GNUNET_SYSERR;
}
- coin_privs[i] = fc->coin_priv;
- sigs[i].rsa_signature = sig;
+ GNUNET_CRYPTO_rsa_signature_free (blind_sig);
+ coin_privs[i] = coin.coin_priv;
+ sigs[i] = coin.sig;
}
GNUNET_JSON_parse_free (outer_spec);
return GNUNET_OK;
generated by cgit v1.2.3 (git 2.25.1) at 2023-03-27 19:21:49 +0000