/*

 * Copyright (c) 2014, 2016, Oracle and/or its affiliates. All rights reserved.

 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.

 *

 * This code is free software; you can redistribute it and/or modify it

 * under the terms of the GNU General Public License version 2 only, as

 * published by the Free Software Foundation.

 *

 * This code is distributed in the hope that it will be useful, but WITHOUT

 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or

 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License

 * version 2 for more details (a copy is included in the LICENSE file that

 * accompanied this code).

 *

 * You should have received a copy of the GNU General Public License version

 * 2 along with this work; if not, write to the Free Software Foundation,

 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.

 *

 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA

 * or visit www.oracle.com if you need additional information or have any

 * questions.

 */

/*

 * @test

 * @bug     7088989 8000415

 * @summary Ensure the various message digests works correctly

 * @key randomness

 */

import java.io.*;

import java.security.*;

import java.security.spec.*;

import java.util.*;

import javax.crypto.*;

import javax.crypto.spec.*;

public class TestDigest extends UcryptoTest {

    private static final String[] MD_ALGOS = {

        "MD5",

        "SHA",

        "SHA-224",

        "SHA-256",

        "SHA-384",

        "SHA-512",

        "SHA3-224",

        "SHA3-256",

        "SHA3-384",

        "SHA3-512"

    };

    public static void main(String[] args) throws Exception {

        main(new TestDigest(), null);

    }

    public void doTest(Provider p) throws Exception {

        boolean testPassed = true;

        byte[] msg = new byte[200];

        (new SecureRandom()).nextBytes(msg);

        String interopProvName = "SUN";

        MessageDigest md, md2;

        for (String a : MD_ALGOS) {

            System.out.println("Testing " + a);

            try {

                md = MessageDigest.getInstance(a, p);

            } catch (NoSuchAlgorithmException nsae) {

                System.out.println("=> Skip, unsupported");

                continue;

            }

            try {

                md2 = MessageDigest.getInstance(a, interopProvName);

            } catch (NoSuchAlgorithmException nsae) {

                System.out.println("=> Skip, no interop provider found");

                continue;

            }

            // Test Interoperability for update+digest calls

            for (int i = 0; i < 3; i++) {

                md.update(msg);

                byte[] digest = md.digest();

                md2.update(msg);

                byte[] digest2 = md2.digest();

                if (!Arrays.equals(digest, digest2)) {

                    System.out.println("DIFF1 FAILED at iter " + i);

                    testPassed = false;

                } else {

                    System.out.println("...diff1 test passed");

                }

            }

            // Test Interoperability for digest calls

            md = MessageDigest.getInstance(a, p);

            md2 = MessageDigest.getInstance(a, interopProvName);

            for (int i = 0; i < 3; i++) {

                byte[] digest = md.digest();

                byte[] digest2 = md2.digest();

                if (!Arrays.equals(digest, digest2)) {

                    System.out.println("DIFF2 FAILED at iter " + i);

                    testPassed = false;

                } else {

                    System.out.println("...diff2 test passed");

                }

            }

            // Test Cloning functionality if supported

            md = MessageDigest.getInstance(a, p);

            try {

                md2 = (MessageDigest) md.clone(); // clone right after construction

            } catch (CloneNotSupportedException cnse) {

                System.out.println("...no clone support");

                continue;

            }

            byte[] digest = md.digest();

            byte[] digest2 = md2.digest();

            if (!Arrays.equals(digest, digest2)) {

                System.out.println("DIFF-3.1 FAILED");

                testPassed = false;

            } else {

                System.out.println("...diff3.1 tests passed");

            }

            md.update(msg);

            md2 = (MessageDigest) md.clone(); // clone again after update call

            digest = md.digest();

            digest2 = md2.digest();

            if (!Arrays.equals(digest, digest2)) {

                System.out.println("DIFF-3.2 FAILED");

                testPassed = false;

            } else {

                System.out.println("...diff3.2 tests passed");

            }

            md2 = (MessageDigest) md.clone(); // clone after digest

            digest = md.digest();

            digest2 = md2.digest();

            if (!Arrays.equals(digest, digest2)) {

                System.out.println("DIFF-3.3 FAILED");

                testPassed = false;

            } else {

                System.out.println("...diff3.3 tests passed");

            }

        }

        if (!testPassed) {

            throw new RuntimeException("One or more MD test failed!");

        } else {

            System.out.println("MD Tests Passed");

        }

    }

}