/*

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 * 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.

 *

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/**

 * @test

 * @bug 6313661

 * @summary Basic known-answer-test for TlsPrf

 * @author Andreas Sterbenz

 */

import java.io.*;

import java.util.*;

import java.security.Security;

import java.security.Provider;

import javax.crypto.KeyGenerator;

import javax.crypto.SecretKey;

import javax.crypto.spec.*;

import sun.security.internal.spec.*;

public class TestPRF extends Utils {

    private static int PREFIX_LENGTH = "prf-output: ".length();

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

        Provider provider = Security.getProvider("SunJCE");

        InputStream in = new FileInputStream(new File(BASE, "prfdata.txt"));

        BufferedReader reader = new BufferedReader(new InputStreamReader(in));

        int n = 0;

        int lineNumber = 0;

        byte[] secret = null;

        String label = null;

        byte[] seed = null;

        int length = 0;

        byte[] output = null;

        while (true) {

            String line = reader.readLine();

            lineNumber++;

            if (line == null) {

                break;

            }

            if (line.startsWith("prf-") == false) {

                continue;

            }

            String data = line.substring(PREFIX_LENGTH);

            if (line.startsWith("prf-secret:")) {

                secret = parse(data);

            } else if (line.startsWith("prf-label:")) {

                label = data;

            } else if (line.startsWith("prf-seed:")) {

                seed = parse(data);

            } else if (line.startsWith("prf-length:")) {

                length = Integer.parseInt(data);

            } else if (line.startsWith("prf-output:")) {

                output = parse(data);

                System.out.print(".");

                n++;

                KeyGenerator kg =

                    KeyGenerator.getInstance("SunTlsPrf", provider);

                SecretKey inKey;

                if (secret == null) {

                    inKey = null;

                } else {

                    inKey = new SecretKeySpec(secret, "Generic");

                }

                TlsPrfParameterSpec spec =

                    new TlsPrfParameterSpec(inKey, label, seed, length,

                        null, -1, -1);

                kg.init(spec);

                SecretKey key = kg.generateKey();

                byte[] enc = key.getEncoded();

                if (Arrays.equals(output, enc) == false) {

                    throw new Exception("mismatch line: " + lineNumber);

                }

            } else {

                throw new Exception("Unknown line: " + line);

            }

        }

        if (n == 0) {

            throw new Exception("no tests");

        }

        in.close();

        System.out.println();

        System.out.println("OK: " + n + " tests");

    }

}