Examples with CosignatureBuilder io.nem.symbol.catapult.builders.CosignatureBuilder used on opensource projects

Example 1 with CosignatureBuilder

use of io.nem.symbol.catapult.builders.CosignatureBuilder in project nem2-sdk-java by nemtech.

the class AggregateTransaction method signTransactionGivenSignatures.

/**
 * Sign transaction with cosignatures creating a new SignedTransaction.
 *
 * @param initiatorAccount Initiator account
 * @param cosignatures The list of precreated cosignatures.
 * @param generationHash the block 1 generation hash used to sign.
 * @return {@link SignedTransaction}
 */
public SignedTransaction signTransactionGivenSignatures(final Account initiatorAccount, final List<? extends AggregateTransactionCosignature> cosignatures, final String generationHash) {
    SignedTransaction signedTransaction = this.signWith(initiatorAccount, generationHash);
    StringBuilder payload = new StringBuilder(signedTransaction.getPayload());
    for (AggregateTransactionCosignature cosignatory : cosignatures) {
        SignatureDto signature = SerializationUtils.toSignatureDto(cosignatory.getSignature());
        CosignatureBuilder builder = CosignatureBuilder.create(cosignatory.getVersion().longValue(), SerializationUtils.toKeyDto(cosignatory.getSigner().getPublicKey()), signature);
        payload.append(ConvertUtils.toHex(builder.serialize()));
    }
    byte[] payloadBytes = ConvertUtils.fromHexToBytes(payload.toString());
    byte[] size = BigInteger.valueOf(payloadBytes.length).toByteArray();
    ArrayUtils.reverse(size);
    System.arraycopy(size, 0, payloadBytes, 0, size.length);
    return new SignedTransaction(initiatorAccount.getPublicAccount(), ConvertUtils.toHex(payloadBytes), signedTransaction.getHash(), getType());
}