PKIX. Added a Java sign test or sample
diff --git a/kerby-pkix/src/test/java/org/apache/kerby/pkix/JavaSignTest.java b/kerby-pkix/src/test/java/org/apache/kerby/pkix/JavaSignTest.java
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+++ b/kerby-pkix/src/test/java/org/apache/kerby/pkix/JavaSignTest.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.kerby.pkix;
+
+import java.security.KeyPair;
+import java.security.KeyPairGenerator;
+import java.security.Signature;
+
+/**
+ * This is a JAVA sign and verify test to serve as a good sample.
+ */
+public class JavaSignTest {
+
+ static class SignAlgorithm {
+ String algo;
+ String keyType;
+
+ SignAlgorithm(String algo, String keyType) {
+ this.algo = algo;
+ this.keyType = keyType;
+ }
+ }
+
+ static final SignAlgorithm[] ALGORITHMS = {
+ new SignAlgorithm("DSA", "DSA"),
+ new SignAlgorithm("SHA1withDSA", "DSA"),
+ new SignAlgorithm("SHA1withRSA", "RSA"),
+ new SignAlgorithm("SHA256withRSA", "RSA"),
+ new SignAlgorithm("SHA384withRSA", "RSA"),
+ new SignAlgorithm("SHA512withRSA", "RSA"),
+ new SignAlgorithm("MD5withRSA", "RSA"),
+ new SignAlgorithm("MD5andSHA1withRSA", "RSA"),
+ new SignAlgorithm("SHA256withRSA", "RSA")
+ };
+
+ static byte[] signData(byte[] dataToSign, KeyPair keyPair,
+ SignAlgorithm sa) throws Exception {
+ byte[] signResult;
+ Signature signer = Signature.getInstance(sa.algo);
+ signer.initSign(keyPair.getPrivate());
+ signer.update(dataToSign);
+ signResult = signer.sign();
+
+ return signResult;
+ }
+
+ static boolean verifyData(byte[] dataToVerify, byte[] signature,
+ KeyPair keyPair, SignAlgorithm sa) throws Exception {
+ boolean verifyResult;
+ Signature verifier = Signature.getInstance(sa.algo);
+ verifier.initVerify(keyPair.getPublic());
+ verifier.update(dataToVerify);
+ verifyResult = verifier.verify(signature);
+
+ return verifyResult;
+ }
+
+ public static void main(String[] args) throws Exception {
+ for (SignAlgorithm sa : ALGORITHMS) {
+ KeyPairGenerator keyGen = KeyPairGenerator.getInstance(sa.keyType);
+ keyGen.initialize(1024);
+ KeyPair keyPair = keyGen.generateKeyPair();
+
+ byte[] testMessage = "Hello, Kerby!!".getBytes();
+ byte[] signature = signData(testMessage, keyPair, sa);
+ boolean isOk = verifyData(testMessage, signature, keyPair, sa);
+ if (!isOk) {
+ throw new RuntimeException("Failed");
+ }
+ }
+ }
+}
