org.apache.ranger.authorization.kafka.authorizer.KafkaTestUtils.java Source code

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Here is the source code for org.apache.ranger.authorization.kafka.authorizer.KafkaTestUtils.java

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/*
 * Licensed to the Apache Software Foundation (ASF) under one or more
 * contributor license agreements.  See the NOTICE file distributed with
 * this work for additional information regarding copyright ownership.
 * The ASF licenses this file to You under the Apache License, Version 2.0
 * (the "License"); you may not use this file except in compliance with
 * the License.  You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package org.apache.ranger.authorization.kafka.authorizer;

import java.io.File;
import java.io.FileOutputStream;
import java.io.OutputStream;
import java.math.BigInteger;
import java.security.KeyPair;
import java.security.KeyPairGenerator;
import java.security.KeyStore;
import java.security.SecureRandom;
import java.security.cert.Certificate;
import java.security.cert.X509Certificate;
import java.util.Date;

import org.bouncycastle.asn1.x500.X500Name;
import org.bouncycastle.asn1.x500.style.RFC4519Style;
import org.bouncycastle.asn1.x509.SubjectPublicKeyInfo;
import org.bouncycastle.cert.X509v3CertificateBuilder;
import org.bouncycastle.cert.jcajce.JcaX509CertificateConverter;
import org.bouncycastle.operator.ContentSigner;
import org.bouncycastle.operator.jcajce.JcaContentSignerBuilder;

public final class KafkaTestUtils {

    public static String createAndStoreKey(String subjectName, String issuerName, BigInteger serial,
            String keystorePassword, String keystoreAlias, String keyPassword, KeyStore trustStore)
            throws Exception {

        // Create KeyPair
        KeyPairGenerator keyPairGenerator = KeyPairGenerator.getInstance("RSA");
        keyPairGenerator.initialize(2048, new SecureRandom());
        KeyPair keyPair = keyPairGenerator.generateKeyPair();

        Date currentDate = new Date();
        Date expiryDate = new Date(currentDate.getTime() + 365L * 24L * 60L * 60L * 1000L);

        // Create X509Certificate
        X509v3CertificateBuilder certBuilder = new X509v3CertificateBuilder(
                new X500Name(RFC4519Style.INSTANCE, issuerName), serial, currentDate, expiryDate,
                new X500Name(RFC4519Style.INSTANCE, subjectName),
                SubjectPublicKeyInfo.getInstance(keyPair.getPublic().getEncoded()));
        ContentSigner contentSigner = new JcaContentSignerBuilder("SHA256WithRSAEncryption")
                .build(keyPair.getPrivate());
        X509Certificate certificate = new JcaX509CertificateConverter()
                .getCertificate(certBuilder.build(contentSigner));

        // Store Private Key + Certificate in Keystore
        KeyStore keystore = KeyStore.getInstance(KeyStore.getDefaultType());
        keystore.load(null, keystorePassword.toCharArray());
        keystore.setKeyEntry(keystoreAlias, keyPair.getPrivate(), keyPassword.toCharArray(),
                new Certificate[] { certificate });

        File keystoreFile = File.createTempFile("kafkakeystore", ".jks");
        try (OutputStream output = new FileOutputStream(keystoreFile)) {
            keystore.store(output, keystorePassword.toCharArray());
        }

        // Now store the Certificate in the truststore
        trustStore.setCertificateEntry(keystoreAlias, certificate);

        return keystoreFile.getPath();

    }

}