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/**

 * @test

 * @bug 6316539

 * @summary Known-answer-test for TlsMasterSecret generator

 * @author Andreas Sterbenz

 * @library ..

 * @modules java.base/sun.security.internal.interfaces

 *          java.base/sun.security.internal.spec

 * @run main/othervm TestMasterSecret

 * @run main/othervm TestMasterSecret sm TestMasterSecret.policy

 */

import java.io.BufferedReader;

import java.nio.file.Files;

import java.nio.file.Paths;

import java.security.Provider;

import java.util.Arrays;

import javax.crypto.KeyGenerator;

import javax.crypto.SecretKey;

import javax.crypto.spec.SecretKeySpec;

import sun.security.internal.interfaces.TlsMasterSecret;

import sun.security.internal.spec.TlsMasterSecretParameterSpec;

public class TestMasterSecret extends PKCS11Test {

    private static final int PREFIX_LENGTH = "m-premaster:  ".length();

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

        main(new TestMasterSecret(), args);

    }

    @Override

    public void main(Provider provider) throws Exception {

        if (provider.getService("KeyGenerator", "SunTlsMasterSecret") == null) {

            System.out.println("Not supported by provider, skipping");

            return;

        }

        try (BufferedReader reader = Files.newBufferedReader(

                Paths.get(BASE, "masterdata.txt"))) {

            int n = 0;

            int lineNumber = 0;

            String algorithm = null;

            byte[] premaster = null;

            byte[] clientRandom = null;

            byte[] serverRandom = null;

            int protoMajor = 0;

            int protoMinor = 0;

            int preMajor = 0;

            int preMinor = 0;

            byte[] master = null;

            while (true) {

                String line = reader.readLine();

                lineNumber++;

                if (line == null) {

                    break;

                }

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

                    continue;

                }

                String data = line.substring(PREFIX_LENGTH);

                if (line.startsWith("m-algorithm:")) {

                    algorithm = data;

                } else if (line.startsWith("m-premaster:")) {

                    premaster = parse(data);

                } else if (line.startsWith("m-crandom:")) {

                    clientRandom = parse(data);

                } else if (line.startsWith("m-srandom:")) {

                    serverRandom = parse(data);

                } else if (line.startsWith("m-protomajor:")) {

                    protoMajor = Integer.parseInt(data);

                } else if (line.startsWith("m-protominor:")) {

                    protoMinor = Integer.parseInt(data);

                } else if (line.startsWith("m-premajor:")) {

                    preMajor = Integer.parseInt(data);

                } else if (line.startsWith("m-preminor:")) {

                    preMinor = Integer.parseInt(data);

                } else if (line.startsWith("m-master:")) {

                    master = parse(data);

                    System.out.print(".");

                    n++;

                    KeyGenerator kg =

                        KeyGenerator.getInstance("SunTlsMasterSecret", provider);

                    SecretKey premasterKey =

                        new SecretKeySpec(premaster, algorithm);

                    TlsMasterSecretParameterSpec spec =

                        new TlsMasterSecretParameterSpec(premasterKey,

                            protoMajor, protoMinor, clientRandom, serverRandom,

                            null, -1, -1);

                    kg.init(spec);

                    TlsMasterSecret key = (TlsMasterSecret)kg.generateKey();

                    byte[] enc = key.getEncoded();

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

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

                    }

                    if ((preMajor != key.getMajorVersion()) ||

                            (preMinor != key.getMinorVersion())) {

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

                    }

                } else {

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

                }

            }

            if (n == 0) {

                throw new Exception("no tests");

            }

            System.out.println();

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

        }

    }

}