Java Code Examples for com.btchip.utils.BufferUtils#writeUint32LE()

The following examples show how to use com.btchip.utils.BufferUtils#writeUint32LE() . These examples are extracted from open source projects. You can vote up the ones you like or vote down the ones you don't like, and go to the original project or source file by following the links above each example. You may check out the related API usage on the sidebar.
Example 1
private byte[] inputBytes(final InputOutputData in, final boolean isSegwit) {
    final ByteArrayOutputStream os = new ByteArrayOutputStream(32 + (isSegwit ? 12 : 4));
    final byte[] txid = in.getTxid();
    os.write(txid, 0, txid.length);
    BufferUtils.writeUint32LE(os, in.getPtIdx());
    if (isSegwit)
        BufferUtils.writeUint64LE(os, in.getSatoshi());
    return os.toByteArray();
}
 
Example 2
private byte[] inputLiquidBytes(final InputOutputData in) {
    final ByteArrayOutputStream os = new ByteArrayOutputStream(32 + 4 + 33);
    final byte[] txid = in.getTxid();
    os.write(txid, 0, txid.length);
    BufferUtils.writeUint32LE(os, in.getPtIdx());
    os.write(in.getCommitmentBytes(), 0, in.getCommitmentBytes().length);
    return os.toByteArray();
}
 
Example 3
public BTChipInput getTrustedInput(BitcoinTransaction transaction, long index, long sequence) throws BTChipException {
	ByteArrayOutputStream data = new ByteArrayOutputStream();
	// Header
	BufferUtils.writeUint32BE(data, index);
	BufferUtils.writeBuffer(data, transaction.getVersion());
	VarintUtils.write(data, transaction.getInputs().size());
	exchangeApdu(BTCHIP_CLA, BTCHIP_INS_GET_TRUSTED_INPUT, (byte)0x00, (byte)0x00, data.toByteArray(), OK);
	// Each input
	for (BitcoinTransaction.BitcoinInput input : transaction.getInputs()) {
		data = new ByteArrayOutputStream();
		BufferUtils.writeBuffer(data, input.getPrevOut());
		VarintUtils.write(data, input.getScript().length);
		exchangeApdu(BTCHIP_CLA, BTCHIP_INS_GET_TRUSTED_INPUT, (byte)0x80, (byte)0x00, data.toByteArray(), OK);
		data = new ByteArrayOutputStream();
		BufferUtils.writeBuffer(data, input.getScript());			
		exchangeApduSplit2(BTCHIP_CLA, BTCHIP_INS_GET_TRUSTED_INPUT, (byte)0x80, (byte)0x00, data.toByteArray(), input.getSequence(), OK);			
	}
	// Number of outputs
	data = new ByteArrayOutputStream();
	VarintUtils.write(data, transaction.getOutputs().size());
	exchangeApdu(BTCHIP_CLA, BTCHIP_INS_GET_TRUSTED_INPUT, (byte)0x80, (byte)0x00, data.toByteArray(), OK);
	// Each output
	for (BitcoinTransaction.BitcoinOutput output : transaction.getOutputs()) {
		data = new ByteArrayOutputStream();
		BufferUtils.writeBuffer(data, output.getAmount());
		VarintUtils.write(data, output.getScript().length);
		exchangeApdu(BTCHIP_CLA, BTCHIP_INS_GET_TRUSTED_INPUT, (byte)0x80, (byte)0x00, data.toByteArray(), OK);
		data = new ByteArrayOutputStream();
		BufferUtils.writeBuffer(data, output.getScript());
		exchangeApduSplit(BTCHIP_CLA, BTCHIP_INS_GET_TRUSTED_INPUT, (byte)0x80, (byte)0x00, data.toByteArray(), OK);						
	}
	// Locktime
	byte[] response = exchangeApdu(BTCHIP_CLA, BTCHIP_INS_GET_TRUSTED_INPUT, (byte)0x80, (byte)0x00, transaction.getLockTime(), OK);
	ByteArrayOutputStream sequenceBuf = new ByteArrayOutputStream();
	BufferUtils.writeUint32LE(sequenceBuf, sequence);
	return new BTChipInput(response, sequenceBuf.toByteArray(), true, false);
}
 
Example 4
public BTChipInput getTrustedInput(BitcoinTransaction transaction, long index, long sequence) throws BTChipException {
	ByteArrayOutputStream data = new ByteArrayOutputStream();
	// Header
	BufferUtils.writeUint32BE(data, index);
	BufferUtils.writeBuffer(data, transaction.getVersion());
	VarintUtils.write(data, transaction.getInputs().size());
	exchangeApdu(BTCHIP_CLA, BTCHIP_INS_GET_TRUSTED_INPUT, (byte)0x00, (byte)0x00, data.toByteArray(), OK);
	// Each input
	for (BitcoinTransaction.BitcoinInput input : transaction.getInputs()) {
		data = new ByteArrayOutputStream();
		BufferUtils.writeBuffer(data, input.getPrevOut());
		VarintUtils.write(data, input.getScript().length);
		exchangeApdu(BTCHIP_CLA, BTCHIP_INS_GET_TRUSTED_INPUT, (byte)0x80, (byte)0x00, data.toByteArray(), OK);
		data = new ByteArrayOutputStream();
		BufferUtils.writeBuffer(data, input.getScript());			
		exchangeApduSplit2(BTCHIP_CLA, BTCHIP_INS_GET_TRUSTED_INPUT, (byte)0x80, (byte)0x00, data.toByteArray(), input.getSequence(), OK);			
	}
	// Number of outputs
	data = new ByteArrayOutputStream();
	VarintUtils.write(data, transaction.getOutputs().size());
	exchangeApdu(BTCHIP_CLA, BTCHIP_INS_GET_TRUSTED_INPUT, (byte)0x80, (byte)0x00, data.toByteArray(), OK);
	// Each output
	for (BitcoinTransaction.BitcoinOutput output : transaction.getOutputs()) {
		data = new ByteArrayOutputStream();
		BufferUtils.writeBuffer(data, output.getAmount());
		VarintUtils.write(data, output.getScript().length);
		exchangeApdu(BTCHIP_CLA, BTCHIP_INS_GET_TRUSTED_INPUT, (byte)0x80, (byte)0x00, data.toByteArray(), OK);
		data = new ByteArrayOutputStream();
		BufferUtils.writeBuffer(data, output.getScript());
		exchangeApduSplit(BTCHIP_CLA, BTCHIP_INS_GET_TRUSTED_INPUT, (byte)0x80, (byte)0x00, data.toByteArray(), OK);						
	}
	// Locktime
	byte[] response = exchangeApdu(BTCHIP_CLA, BTCHIP_INS_GET_TRUSTED_INPUT, (byte)0x80, (byte)0x00, transaction.getLockTime(), OK);
	ByteArrayOutputStream sequenceBuf = new ByteArrayOutputStream();
	BufferUtils.writeUint32LE(sequenceBuf, sequence);
	return new BTChipInput(response, sequenceBuf.toByteArray(), true);
}
 
Example 5
private byte[] sequenceBytes(final InputOutputData in) {
    final ByteArrayOutputStream os = new ByteArrayOutputStream(4);
    BufferUtils.writeUint32LE(os, in.getSequence());
    return os.toByteArray();
}