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add message sign test for low r grinding (verified signatures against electrum 4.1.2)

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This commit is contained in:
Craig Raw 2021-04-25 13:25:04 +02:00
parent 173743ba0d
commit f4730f7147
1 changed files with 37 additions and 0 deletions
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src/test/java/com/sparrowwallet/drongo/crypto/ECKeyTest.java Normal file
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package com.sparrowwallet.drongo.crypto;
import com.sparrowwallet.drongo.KeyPurpose;
import com.sparrowwallet.drongo.address.Address;
import com.sparrowwallet.drongo.policy.Policy;
import com.sparrowwallet.drongo.policy.PolicyType;
import com.sparrowwallet.drongo.protocol.ScriptType;
import com.sparrowwallet.drongo.wallet.*;
import org.junit.Assert;
import org.junit.Test;
public class ECKeyTest {
@Test
public void testGrindLowR() throws MnemonicException {
String words = "absent essay fox snake vast pumpkin height crouch silent bulb excuse razor";
DeterministicSeed seed = new DeterministicSeed(words, "", 0, DeterministicSeed.Type.BIP39);
Wallet wallet = new Wallet();
wallet.setPolicyType(PolicyType.SINGLE);
wallet.setScriptType(ScriptType.P2PKH);
Keystore keystore = Keystore.fromSeed(seed, wallet.getScriptType().getDefaultDerivation());
wallet.getKeystores().add(keystore);
wallet.setDefaultPolicy(Policy.getPolicy(PolicyType.SINGLE, ScriptType.P2PKH, wallet.getKeystores(), 1));
WalletNode firstReceive = wallet.getNode(KeyPurpose.RECEIVE).getChildren().iterator().next();
Address address = wallet.getAddress(firstReceive);
Assert.assertEquals("14JmU9a7SzieZNEtBnsZo688rt3mGrw6hr", address.toString());
ECKey privKey = keystore.getKey(firstReceive);
//2 attempts required for low R
String signature = privKey.signMessage("Test", ScriptType.P2PKH, null);
Assert.assertEquals("IDgMx1ljPhLHlKUOwnO/jBIgK+K8n8mvDUDROzTgU8gOaPDMs+eYXJpNXXINUx5WpeV605p5uO6B3TzBVcvs478=", signature);
//3 attempts required for low R
String signature2 = privKey.signMessage("Test1", ScriptType.P2PKH, null);
Assert.assertEquals("IEt/v9K95YVFuRtRtWaabPVwWOFv1FSA/e874I8ABgYMbRyVvHhSwLFz0RZuO87ukxDd4TOsRdofQwMEA90LCgI=", signature2);
}
}