Package org.bitcoinj.crypto.utils

Class MessageVerifyUtils

java.lang.Object

org.bitcoinj.crypto.utils.MessageVerifyUtils

public class MessageVerifyUtils
extends Object

Small utility class for verifying signatures of text messages created with Bitcoin addresses (more precisely: with the private key of Bitcoin addresses). Supports verifying of signatures created with:

• P2PKH addresses (old legacy 1… addresses)
• P2WPKH addresses (native segwit v0 addresses, aka bc1q… addresses)
• P2SH-P2WPKH addresses (segwit wrapped into P2SH, aka legacy segwit addresses, like 3…)

Field Summary

Fields

Modifier and Type	Field	Description
static final String	SIGNATURE_FAILED_ERROR_MESSAGE

Method Summary

Modifier and Type	Method	Description
static void	verifyMessage(Address address, String message, String signatureBase64)	Verifies messages signed with private keys of Bitcoin addresses.

Methods inherited from class java.lang.Object

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

Field Details

SIGNATURE_FAILED_ERROR_MESSAGE

public static final String SIGNATURE_FAILED_ERROR_MESSAGE

See Also:

• Constant Field Values

Method Details

verifyMessage

public static void verifyMessage(Address address,
 String message,
 String signatureBase64)
                          throws SignatureException

Verifies messages signed with private keys of Bitcoin addresses.

Parameters:

address - bitcoin address used to create the signature

message - message which has been signed

signatureBase64 - signature as base64 encoded string

Throws:

SignatureException - if the signature does not match the message and the address