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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");
        }
    }

}