Examples with TransactionInput org.bitcoinj.core.TransactionInput used on opensource projects

Example 11 with TransactionInput

use of org.bitcoinj.core.TransactionInput in project samourai-wallet-android by Samourai-Wallet.

the class SendFactory method signTransaction.

public Transaction signTransaction(Transaction unsignedTx) {
    HashMap<String, ECKey> keyBag = new HashMap<String, ECKey>();
    for (TransactionInput input : unsignedTx.getInputs()) {
        try {
            byte[] scriptBytes = input.getOutpoint().getConnectedPubKeyScript();
            String address = new Script(scriptBytes).getToAddress(SamouraiWallet.getInstance().getCurrentNetworkParams()).toString();
            // Log.i("address from script", address);
            ECKey ecKey = null;
            ecKey = getPrivKey(address);
            if (ecKey != null) {
                keyBag.put(input.getOutpoint().toString(), ecKey);
            } else {
                throw new RuntimeException("ECKey error: cannot process private key");
            // Log.i("ECKey error", "cannot process private key");
            }
        } catch (ScriptException se) {
            ;
        } catch (Exception e) {
            ;
        }
    }
    Transaction signedTx = signTransaction(unsignedTx, keyBag);
    if (signedTx == null) {
        return null;
    } else {
        String hexString = new String(Hex.encode(signedTx.bitcoinSerialize()));
        if (hexString.length() > (100 * 1024)) {
            Toast.makeText(context, R.string.tx_length_error, Toast.LENGTH_SHORT).show();
        // Log.i("SendFactory", "Transaction length too long");
        }
        return signedTx;
    }
}

Example 12 with TransactionInput

use of org.bitcoinj.core.TransactionInput in project samourai-wallet-android by Samourai-Wallet.

the class SendFactory method signTransactionForSweep.

public Transaction signTransactionForSweep(Transaction unsignedTx, PrivKeyReader privKeyReader) {
    HashMap<String, ECKey> keyBag = new HashMap<String, ECKey>();
    for (TransactionInput input : unsignedTx.getInputs()) {
        try {
            byte[] scriptBytes = input.getOutpoint().getConnectedPubKeyScript();
            // String address = new BitcoinScript(scriptBytes).getAddress().toString();
            String address = new Script(scriptBytes).getToAddress(SamouraiWallet.getInstance().getCurrentNetworkParams()).toString();
            // Log.i("address from script", address);
            ECKey ecKey = null;
            try {
                DumpedPrivateKey pk = new DumpedPrivateKey(SamouraiWallet.getInstance().getCurrentNetworkParams(), privKeyReader.getKey().getPrivateKeyAsWiF(SamouraiWallet.getInstance().getCurrentNetworkParams()));
                ecKey = pk.getKey();
            // Log.i("SendFactory", "ECKey address:" + ecKey.toAddress(SamouraiWallet.getInstance().getCurrentNetworkParams()).toString());
            } catch (AddressFormatException afe) {
                afe.printStackTrace();
                continue;
            }
            if (ecKey != null) {
                keyBag.put(input.getOutpoint().toString(), ecKey);
            } else {
                Toast.makeText(context, R.string.cannot_recognize_privkey, Toast.LENGTH_SHORT).show();
            // Log.i("ECKey error", "cannot process private key");
            }
        } catch (ScriptException se) {
            ;
        } catch (Exception e) {
            ;
        }
    }
    Transaction signedTx = signTransaction(unsignedTx, keyBag);
    if (signedTx == null) {
        return null;
    } else {
        String hexString = new String(Hex.encode(signedTx.bitcoinSerialize()));
        if (hexString.length() > (100 * 1024)) {
            Toast.makeText(context, R.string.tx_length_error, Toast.LENGTH_SHORT).show();
        // Log.i("SendFactory", "Transaction length too long");
        }
        return signedTx;
    }
}

Example 13 with TransactionInput

use of org.bitcoinj.core.TransactionInput in project sentinel-android by Samourai-Wallet.

the class SendFactory method makeTransaction.

/*
    Used by spends
     */
private Transaction makeTransaction(int accountIdx, HashMap<String, BigInteger> receivers, List<MyTransactionOutPoint> unspent) throws Exception {
    BigInteger amount = BigInteger.ZERO;
    for (Iterator<Map.Entry<String, BigInteger>> iterator = receivers.entrySet().iterator(); iterator.hasNext(); ) {
        Map.Entry<String, BigInteger> mapEntry = iterator.next();
        amount = amount.add(mapEntry.getValue());
    }
    List<TransactionOutput> outputs = new ArrayList<TransactionOutput>();
    Transaction tx = new Transaction(MainNetParams.get());
    for (Iterator<Map.Entry<String, BigInteger>> iterator = receivers.entrySet().iterator(); iterator.hasNext(); ) {
        Map.Entry<String, BigInteger> mapEntry = iterator.next();
        String toAddress = mapEntry.getKey();
        BigInteger value = mapEntry.getValue();
        /*
            if(value.compareTo(SamouraiWallet.bDust) < 1)    {
                throw new Exception(context.getString(R.string.dust_amount));
            }
*/
        if (value == null || value.compareTo(BigInteger.ZERO) <= 0) {
            throw new Exception(context.getString(R.string.invalid_amount));
        }
        Script toOutputScript = ScriptBuilder.createOutputScript(org.bitcoinj.core.Address.fromBase58(MainNetParams.get(), toAddress));
        TransactionOutput output = new TransactionOutput(MainNetParams.get(), null, Coin.valueOf(value.longValue()), toOutputScript.getProgram());
        outputs.add(output);
    }
    List<MyTransactionInput> inputs = new ArrayList<MyTransactionInput>();
    for (MyTransactionOutPoint outPoint : unspent) {
        Script script = new Script(outPoint.getScriptBytes());
        if (script.getScriptType() == Script.ScriptType.NO_TYPE) {
            continue;
        }
        MyTransactionInput input = new MyTransactionInput(MainNetParams.get(), null, new byte[0], outPoint, outPoint.getTxHash().toString(), outPoint.getTxOutputN());
        inputs.add(input);
    }
    // 
    // deterministically sort inputs and outputs, see BIP69 (OBPP)
    // 
    Collections.sort(inputs, new BIP69InputComparator());
    for (TransactionInput input : inputs) {
        tx.addInput(input);
    }
    Collections.sort(outputs, new BIP69OutputComparator());
    for (TransactionOutput to : outputs) {
        tx.addOutput(to);
    }
    return tx;
}

Example 14 with TransactionInput

use of org.bitcoinj.core.TransactionInput in project sentinel-android by Samourai-Wallet.

the class SendFactory method signTransactionForSweep.

public Transaction signTransactionForSweep(Transaction unsignedTx, PrivKeyReader privKeyReader) {
    HashMap<String, ECKey> keyBag = new HashMap<String, ECKey>();
    for (TransactionInput input : unsignedTx.getInputs()) {
        try {
            byte[] scriptBytes = input.getOutpoint().getConnectedPubKeyScript();
            // String address = new BitcoinScript(scriptBytes).getAddress().toString();
            String address = new Script(scriptBytes).getToAddress(MainNetParams.get()).toString();
            // Log.i("address from script", address);
            ECKey ecKey = null;
            try {
                DumpedPrivateKey pk = new DumpedPrivateKey(MainNetParams.get(), privKeyReader.getKey().getPrivateKeyAsWiF(MainNetParams.get()));
                ecKey = pk.getKey();
            // Log.i("SendFactory", "ECKey address:" + ecKey.toAddress(MainNetParams.get()).toString());
            } catch (AddressFormatException afe) {
                afe.printStackTrace();
                continue;
            }
            if (ecKey != null) {
                keyBag.put(input.getOutpoint().toString(), ecKey);
            } else {
                Toast.makeText(context, R.string.cannot_recognize_privkey, Toast.LENGTH_SHORT).show();
            // Log.i("ECKey error", "cannot process private key");
            }
        } catch (ScriptException se) {
            ;
        } catch (Exception e) {
            ;
        }
    }
    Transaction signedTx = signTransaction(unsignedTx, keyBag);
    if (signedTx == null) {
        return null;
    } else {
        String hexString = new String(Hex.encode(signedTx.bitcoinSerialize()));
        if (hexString.length() > (100 * 1024)) {
            Toast.makeText(context, R.string.tx_length_error, Toast.LENGTH_SHORT).show();
        // Log.i("SendFactory", "Transaction length too long");
        }
        return signedTx;
    }
}

Example 15 with TransactionInput

use of org.bitcoinj.core.TransactionInput in project catena-java by alinush.

the class TxUtils method findDoubleSpendsAgainst.

/**
 * Checks if any of the txs in candidates double spends any of the outputs spent by the transaction in tx.
 * (i.e., checks if tx and candidates conflict by spending the same output(s))
 *
 * Copied from the wallet class. Need it to check for lies.
 *
 * @param tx
 * @param candidates
 * @return
 */
public static Set<Transaction> findDoubleSpendsAgainst(Transaction tx, Map<Sha256Hash, Transaction> candidates) {
    // Coinbase TXs cannot double spend
    if (tx.isCoinBase())
        return Sets.newHashSet();
    // Compile a set of outpoints that are spent by tx.
    HashSet<TransactionOutPoint> outpoints = new HashSet<TransactionOutPoint>();
    for (TransactionInput input : tx.getInputs()) {
        outpoints.add(input.getOutpoint());
    }
    // Now for each candidate transaction, see if it spends any outpoints as this tx.
    Set<Transaction> doubleSpendTxns = Sets.newHashSet();
    for (Transaction p : candidates.values()) {
        for (TransactionInput input : p.getInputs()) {
            TransactionOutPoint outpoint = input.getOutpoint();
            if (outpoints.contains(outpoint)) {
                // It does, it's a double spend against the candidates, which makes it relevant.
                doubleSpendTxns.add(p);
            }
        }
    }
    return doubleSpendTxns;
}