org.bitcoinj.signers

Class LocalTransactionSigner

java.lang.Object

org.bitcoinj.signers.LocalTransactionSigner

All Implemented Interfaces:

TransactionSigner

public class LocalTransactionSigner
extends java.lang.Object
implements TransactionSigner

TransactionSigner implementation for signing inputs using keys from provided KeyBag.

This signer doesn't create input scripts for tx inputs. Instead it expects inputs to contain scripts with empty sigs and replaces one of the empty sigs with calculated signature.

This signer is always implicitly added into every wallet and it is the first signer to be executed during tx completion. As the first signer to create a signature, it stores derivation path of the signing key in a given TransactionSigner.ProposedTransaction object that will be also passed then to the next signer in chain. This allows other signers to use correct signing key for P2SH inputs, because all the keys involved in a single P2SH address have the same derivation path.

This signer always uses Transaction.SigHash#ALL signing mode.

Nested Class Summary

Nested classes/interfaces inherited from interface org.bitcoinj.signers.TransactionSigner

TransactionSigner.MissingSignatureException, TransactionSigner.ProposedTransaction

Constructor Summary

Constructors

Constructor and Description
LocalTransactionSigner()

Method Summary

Modifier and Type	Method and Description
boolean	isReady() Returns true if this signer is ready to be used.
boolean	signInputs(TransactionSigner.ProposedTransaction propTx, KeyBag keyBag) Signs given transaction's inputs.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

LocalTransactionSigner

public LocalTransactionSigner()

Method Detail

isReady

public boolean isReady()

Description copied from interface: TransactionSigner

Returns true if this signer is ready to be used.

Specified by:

isReady in interface TransactionSigner

signInputs

public boolean signInputs(TransactionSigner.ProposedTransaction propTx,
                          KeyBag keyBag)

Description copied from interface: TransactionSigner

Signs given transaction's inputs. Returns true if signer is compatible with given transaction (can do something meaningful with it). Otherwise this method returns false

Specified by:

signInputs in interface TransactionSigner