@Override
public Transaction signTransaction(UnsignedTransaction unsigned, KeyCipher cipher)
throws InvalidKeyCipher {
checkNotArchived();
if (!isValidEncryptionKey(cipher)) {
throw new InvalidKeyCipher();
}
// Make all signatures, this is the CPU intensive part
List<byte[]> signatures =
StandardTransactionBuilder.generateSignatures(
unsigned.getSignatureInfo(), new PrivateKeyRing(cipher));
// Apply signatures and finalize transaction
Transaction transaction = StandardTransactionBuilder.finalizeTransaction(unsigned, signatures);
return transaction;
}
public static Transaction createSignedTransaction(TradeSession ts, MbwManager mbwManager) {
Preconditions.checkNotNull(ts.buyerAddress);
// Create default wallet
Wallet wallet = mbwManager.getRecordManager().getWallet(mbwManager.getWalletMode());
// Get spendable outputs
SpendableOutputs spendable =
wallet.getLocalSpendableOutputs(mbwManager.getBlockChainAddressTracker());
// Extract private key ring
PrivateKeyRing keyRing = wallet.getPrivateKeyRing();
// Create unsigned transaction
UnsignedTransaction unsigned =
createUnsignedTransaction(
ts.satoshisFromSeller,
ts.satoshisForBuyer,
ts.buyerAddress,
ts.feeAddress,
mbwManager,
spendable,
keyRing,
mbwManager.getNetwork());
if (unsigned == null) {
return null;
}
// Make signatures
List<byte[]> signatures =
StandardTransactionBuilder.generateSignatures(
unsigned.getSignatureInfo(), keyRing, mbwManager.getRecordManager().getRandomSource());
// Sign transaction
Transaction tx = StandardTransactionBuilder.finalizeTransaction(unsigned, signatures);
return tx;
}