/**
  * When the servers signature for the refund transaction is received, call this to verify it and
  * sign the complete refund ourselves.
  *
  * <p>If this does not throw an exception, we are secure against the loss of funds and can safely
  * provide the server with the multi-sig contract to lock in the agreement. In this case, both the
  * multisig contract and the refund transaction are automatically committed to wallet so that it
  * can handle broadcasting the refund transaction at the appropriate time if necessary.
  */
 public synchronized void provideRefundSignature(byte[] theirSignature)
     throws VerificationException {
   checkNotNull(theirSignature);
   checkState(state == State.WAITING_FOR_SIGNED_REFUND);
   TransactionSignature theirSig = TransactionSignature.decodeFromBitcoin(theirSignature, true);
   if (theirSig.sigHashMode() != Transaction.SigHash.NONE || !theirSig.anyoneCanPay())
     throw new VerificationException("Refund signature was not SIGHASH_NONE|SIGHASH_ANYONECANPAY");
   // Sign the refund transaction ourselves.
   final TransactionOutput multisigContractOutput = multisigContract.getOutput(0);
   try {
     multisigScript = multisigContractOutput.getScriptPubKey();
   } catch (ScriptException e) {
     throw new RuntimeException(e); // Cannot happen: we built this ourselves.
   }
   TransactionSignature ourSignature =
       refundTx.calculateSignature(0, myKey, multisigScript, Transaction.SigHash.ALL, false);
   // Insert the signatures.
   Script scriptSig = ScriptBuilder.createMultiSigInputScript(ourSignature, theirSig);
   log.info("Refund scriptSig: {}", scriptSig);
   log.info("Multi-sig contract scriptPubKey: {}", multisigScript);
   TransactionInput refundInput = refundTx.getInput(0);
   refundInput.setScriptSig(scriptSig);
   refundInput.verify(multisigContractOutput);
   state = State.SAVE_STATE_IN_WALLET;
 }
Esempio n. 2
0
  public Address getAddressForOutput(TransactionOutput out) {
    try {
      Script script = out.getScriptPubKey();
      if (script.isSentToRawPubKey()) {
        byte[] key = out.getScriptPubKey().getPubKey();
        byte[] address_bytes = com.google.bitcoin.core.Utils.sha256hash160(key);
        Address a = new Address(params, address_bytes);
        return a;
      } else {
        Address a = script.getToAddress(params);
        return a;
      }
    } catch (ScriptException e) {

      // System.out.println(out.getParentTransaction().getHash() + " - " + out);
      // e.printStackTrace();
      // jelly.getEventLog().log("Unable process tx output: " +
      // out.getParentTransaction().getHash());
    }
    return null;
  }