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#include <gnunet/platform.h>
#include <gnunet/gnunet_crypto_lib.h>
#include <gnunet/gnunet_signatures.h>
#include <taler/taler_mintdb_plugin.h>
#include <taler/taler_signatures.h>
#include <taler/taler_amount_lib.h>
#define CURRENCY "EUR\0\0\0\0\0\0\0\0"
struct TALER_MINTDB_CollectableBlindcoin *
init_CollectableBlindcoin ()
{
// indent by 2 spaces
struct TALER_MINTDB_CollectableBlindcoin *coin = GNUNET_new (*coin);
struct GNUNET_CRYPTO_EddsaPrivateKey *reserve_sig_key = GNUNET_CRYPTO_eddsa_key_create ();
struct GNUNET_CRYPTO_rsa_PrivateKey *denomination_key = GNUNET_CRYPTO_rsa_private_key_create (512);
coin->denom_pub.rsa_public_key = GNUNET_CRYPTO_rsa_private_key_get_public (denomination_key);
GNUNET_CRYPTO_eddsa_key_get_public (reserve_sig_key,
&coin->reserve_pub.eddsa_pub);
//TODO Randomise the amount that is deposited and apply a fee subsequently
// GNUNET_assert (GNUNET_OK ==
// TALER_string_to_amount (CURRENCY ":1.1",
// &coin->amount_with_fee));
coin->amount_with_fee = (struct TALER_Amount) {1, 1, CURRENCY};
coin->withdraw_fee = (struct TALER_Amount) {0, 1, CURRENCY};
int random_int = rand(); // GNUNET_CRYPTO_random_u32
coin->sig.rsa_signature = GNUNET_CRYPTO_rsa_sign(denomination_key, &random_int, sizeof(random_int));
GNUNET_CRYPTO_hash_create_random(GNUNET_CRYPTO_QUALITY_WEAK, &coin->h_coin_envelope);
void *purpose = GNUNET_malloc (sizeof(struct GNUNET_CRYPTO_EccSignaturePurpose) + sizeof(int));
((struct GNUNET_CRYPTO_EccSignaturePurpose *)purpose)->size = sizeof(struct GNUNET_CRYPTO_EccSignaturePurpose) + sizeof(int);
((struct GNUNET_CRYPTO_EccSignaturePurpose *)purpose)->purpose = GNUNET_SIGNATURE_PURPOSE_TEST;
*((int *)(purpose + sizeof(struct GNUNET_CRYPTO_EccSignaturePurpose))) = random_int;
GNUNET_CRYPTO_eddsa_sign(reserve_sig_key, purpose, &coin->reserve_sig.eddsa_signature);
GNUNET_free(reserve_sig_key);
GNUNET_CRYPTO_rsa_private_key_free(denomination_key);
return coin;
}
struct TALER_MINTDB_Reserve *
init_Reserve(){
struct TALER_MINTDB_Reserve *reserve = GNUNET_malloc(sizeof(*reserve));
struct GNUNET_CRYPTO_EddsaPrivateKey *reserve_priv = GNUNET_CRYPTO_eddsa_key_create();
GNUNET_CRYPTO_eddsa_key_get_public(reserve_priv , &(reserve->pub.eddsa_pub));
reserve->balance = (struct TALER_Amount){1, 1, CURRENCY};
reserve->expiry = GNUNET_TIME_absolute_get_forever_();
GNUNET_free(reserve_priv);
return reserve;
}
struct TALER_MINTDB_RefreshSession *
init_Refresh_session(){
struct TALER_MINTDB_RefreshSession *refresh_session = GNUNET_malloc(sizeof(*refresh_session));
refresh_session->noreveal_index = 1;
refresh_session->num_oldcoins = 1;
refresh_session->num_newcoins = 1;
return refresh_session;
}
struct TALER_MINTDB_Deposit *
init_Deposit(){
static int transaction_id = 0;
struct TALER_MINTDB_Deposit *deposit = GNUNET_malloc(sizeof(*deposit));
deposit-> transaction_id = transaction_id;
transaction_id++;
//TODO Randomize the amount that is deposited
deposit->amount_with_fee = (struct TALER_Amount) {1, 1, CURRENCY};
deposit->deposit_fee = (struct TALER_Amount) {0, 1, CURRENCY};
deposit->timestamp = GNUNET_TIME_absolute_get();
deposit->refund_deadline = GNUNET_TIME_absolute_get();
GNUNET_CRYPTO_hash_create_random(GNUNET_CRYPTO_QUALITY_WEAK, &deposit->h_contract);
GNUNET_CRYPTO_hash_create_random(GNUNET_CRYPTO_QUALITY_WEAK, &deposit->h_wire);
// Coin Spend Signature
{
struct GNUNET_CRYPTO_EddsaSignature sig;
struct GNUNET_CRYPTO_EddsaPrivateKey *p_eddsa_prvt = GNUNET_CRYPTO_eddsa_key_create();
void *prp = GNUNET_malloc(sizeof(struct GNUNET_CRYPTO_EccSignaturePurpose)+sizeof(int));
*((struct GNUNET_CRYPTO_EccSignaturePurpose *)prp) =(struct GNUNET_CRYPTO_EccSignaturePurpose) {sizeof(struct GNUNET_CRYPTO_EccSignaturePurpose)+sizeof(int), GNUNET_SIGNATURE_PURPOSE_TEST};
GNUNET_CRYPTO_eddsa_sign(p_eddsa_prvt, (struct GNUNET_CRYPTO_EccSignaturePurpose *) prp, &sig);
deposit->csig.eddsa_signature = sig;
GNUNET_free(p_eddsa_prvt);
}
// Merchant Key
{
struct GNUNET_CRYPTO_EddsaPublicKey eddsa_pub;
struct GNUNET_CRYPTO_EddsaPrivateKey *p_eddsa_prv = GNUNET_CRYPTO_eddsa_key_create();
GNUNET_CRYPTO_eddsa_key_get_public(p_eddsa_prv, &eddsa_pub);
deposit->merchant_pub.eddsa_pub = eddsa_pub;
GNUNET_free(p_eddsa_prv);
}
// Coin
{
{
struct GNUNET_CRYPTO_EddsaPublicKey eddsa_pub;
struct GNUNET_CRYPTO_EddsaPrivateKey *p_eddsa_prvt = GNUNET_CRYPTO_eddsa_key_create();
GNUNET_CRYPTO_eddsa_key_get_public(p_eddsa_prvt, &eddsa_pub);
deposit->coin.coin_pub.eddsa_pub = eddsa_pub;
GNUNET_free(p_eddsa_prvt);
}
{
struct GNUNET_CRYPTO_rsa_PrivateKey *p_rsa_prv = GNUNET_CRYPTO_rsa_private_key_create(128);
struct GNUNET_CRYPTO_rsa_PublicKey *p_rsa_pub = GNUNET_CRYPTO_rsa_private_key_get_public(p_rsa_prv);
deposit->coin.denom_pub.rsa_public_key = p_rsa_pub;
deposit->coin.denom_sig.rsa_signature = GNUNET_CRYPTO_rsa_sign(p_rsa_prv,
(void *) &(deposit->coin.coin_pub.eddsa_pub),
sizeof(&(deposit->coin.coin_pub.eddsa_pub)));
GNUNET_CRYPTO_rsa_private_key_free(p_rsa_prv);
}
}
return deposit;
}
struct TALER_MINTDB_DenominationKeyIssueInformation *
init_denomination(){
struct TALER_MINTDB_DenominationKeyIssueInformation *dki = GNUNET_malloc(sizeof(&dki));
dki->denom_priv.rsa_private_key
= GNUNET_CRYPTO_rsa_private_key_create (128);
GNUNET_assert (NULL != dki->denom_priv.rsa_private_key);
dki->denom_pub.rsa_public_key
= GNUNET_CRYPTO_rsa_private_key_get_public (dki->denom_priv.rsa_private_key);
GNUNET_CRYPTO_rsa_public_key_hash (dki->denom_pub.rsa_public_key,
&dki->issue.denom_hash);
struct GNUNET_CRYPTO_EddsaPrivateKey *master_prvt =
GNUNET_CRYPTO_eddsa_key_create();
struct GNUNET_CRYPTO_EddsaPublicKey master_pub;
GNUNET_CRYPTO_eddsa_key_get_public(master_prvt, &master_pub);
dki->issue.master.eddsa_pub = master_pub;
struct GNUNET_TIME_Absolute anchor = GNUNET_TIME_absolute_get();
dki->issue.start = GNUNET_TIME_absolute_hton (anchor);
dki->issue.expire_withdraw =
GNUNET_TIME_absolute_hton (GNUNET_TIME_absolute_add (anchor,
GNUNET_TIME_relative_get_hour_()));
dki->issue.expire_spend =
GNUNET_TIME_absolute_hton (GNUNET_TIME_absolute_add (anchor,
GNUNET_TIME_relative_get_hour_()));
dki->issue.expire_legal =
GNUNET_TIME_absolute_hton (GNUNET_TIME_absolute_add (anchor,
GNUNET_TIME_relative_get_hour_()));
struct TALER_Amount amount = {.value = 1, .fraction = 1, .currency = CURRENCY};
TALER_amount_hton (&dki->issue.value, &amount);
TALER_amount_hton (&dki->issue.fee_withdraw, &amount);
TALER_amount_hton (&dki->issue.fee_deposit, &amount);
TALER_amount_hton (&dki->issue.fee_refresh, &amount);
dki->issue.purpose.purpose = htonl (TALER_SIGNATURE_MASTER_DENOMINATION_KEY_VALIDITY);
dki->issue.purpose.size = htonl (sizeof (struct TALER_MINTDB_DenominationKeyIssueInformation) -
offsetof (struct TALER_MINTDB_DenominationKeyIssueInformation,
issue.purpose));
GNUNET_assert (GNUNET_OK ==
GNUNET_CRYPTO_eddsa_sign (master_prvt,
&dki->issue.purpose,
&dki->issue.signature.eddsa_signature));
return dki;
}
// Destructors
int
free_deposit(struct TALER_MINTDB_Deposit *deposit){
GNUNET_free(deposit->coin.denom_pub.rsa_public_key);
GNUNET_free(deposit->coin.denom_sig.rsa_signature);
GNUNET_free(deposit);
return GNUNET_OK;
}
int
free_coin(struct TALER_MINTDB_CollectableBlindcoin *coin){
GNUNET_free(coin->sig.rsa_signature);
GNUNET_free(coin->denom_pub.rsa_public_key);
GNUNET_free(coin);
return GNUNET_OK;
}
int
free_denomination(struct TALER_MINTDB_DenominationKeyIssueInformation *dki){
GNUNET_free(dki->denom_priv.rsa_private_key);
GNUNET_free(dki->denom_pub.rsa_public_key);
GNUNET_free(dki);
return GNUNET_OK;
}
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