package org.web3j.example.utils;
import java.io.InputStream;
import java.io.BufferedReader;
import java.io.InputStreamReader;
import java.nio.charset.StandardCharsets;
import java.util.stream.Collectors;
import org.web3j.crypto.KaiaWelletUtils;
import org.web3j.crypto.KaiaCredentials;
import java.io.IOException;
import org.web3j.tx.response.PollingTransactionReceiptProcessor;
import org.web3j.tx.response.TransactionReceiptProcessor;
import org.web3j.example.keySample;
public class DecryptKeystoreV3Example implements keySample {
public static void run() throws Exception {
String password = "Ilovekaia";
String[] keyFiles = { "/Legacy_V3.json", "/Public_V3.json" };
for (String keyFile : keyFiles) {
String json = getResourceJSON(keyFile);
// Convert keystore to list of KaiaCredentials
KaiaCredentials credentials = KaiaWelletUtils.loadJsonKaiaCredentials(password, json);
System.out.println("Load KaiaCredentials from keystore file: " + keyFile);
String address = credentials.getAddress();
String privateKey = credentials.getEcKeyPair().getPrivateKey().toString(16);
System.out.println("\tKaiaCredential : " + "Address: " + address + ", Private Key: 0x" + privateKey);
static String getResourceJSON(String resourcePath) throws IOException {
InputStream inputStream = DecryptKeystoreV3Example.class.getResourceAsStream(resourcePath);
if (inputStream == null) {
throw new IllegalArgumentException("resource not found: " + resourcePath);
try (BufferedReader reader = new BufferedReader(new InputStreamReader(inputStream, StandardCharsets.UTF_8))) {
// String value for keystore JSON
return reader.lines().collect(Collectors.joining(System.lineSeparator()));
} catch (IOException e) {