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package sun.security.internal.spec;

import java.security.spec.AlgorithmParameterSpec;

import javax.crypto.SecretKey;

Parameters for SSL/TLS master secret generation.
This class encapsulates the information necessary to calculate a SSL/TLS
master secret from the premaster secret and other parameters.
It is used to initialize KeyGenerators of the type "TlsMasterSecret".
Instances of this class are immutable.
Author:
 Andreas Sterbenz
Since:
  1.6
Deprecated:
Sun JDK internal use only --- WILL BE REMOVED in Dolphin (JDK 7)/**
 * Parameters for SSL/TLS master secret generation.
 * This class encapsulates the information necessary to calculate a SSL/TLS
 * master secret from the premaster secret and other parameters.
 * It is used to initialize KeyGenerators of the type "TlsMasterSecret".
 *
 * <p>Instances of this class are immutable.
 *
 * @since   1.6
 * @author  Andreas Sterbenz
 * @deprecated Sun JDK internal use only --- WILL BE REMOVED in Dolphin (JDK 7)
 */
@Deprecated
public class TlsMasterSecretParameterSpec implements AlgorithmParameterSpec {

    private final SecretKey premasterSecret;
    private final int majorVersion, minorVersion;
    private final byte[] clientRandom, serverRandom;
    private final byte[] extendedMasterSecretSessionHash;

    
Constructs a new TlsMasterSecretParameterSpec.
The getAlgorithm() method of premasterSecret
should return "TlsRsaPremasterSecret" if the key exchange
algorithm was RSA and "TlsPremasterSecret" otherwise.
Params:
premasterSecret – the premaster secret
majorVersion – the major number of the protocol version
minorVersion – the minor number of the protocol version
clientRandom – the client's random value
serverRandom – the server's random value
Throws:
NullPointerException – if premasterSecret, clientRandom,
  or serverRandom are null
IllegalArgumentException – if minorVersion or majorVersion are
  negative or larger than 255/**
     * Constructs a new TlsMasterSecretParameterSpec.
     *
     * <p>The <code>getAlgorithm()</code> method of <code>premasterSecret</code>
     * should return <code>"TlsRsaPremasterSecret"</code> if the key exchange
     * algorithm was RSA and <code>"TlsPremasterSecret"</code> otherwise.
     *
     * @param premasterSecret the premaster secret
     * @param majorVersion the major number of the protocol version
     * @param minorVersion the minor number of the protocol version
     * @param clientRandom the client's random value
     * @param serverRandom the server's random value
     *
     * @throws NullPointerException if premasterSecret, clientRandom,
     *   or serverRandom are null
     * @throws IllegalArgumentException if minorVersion or majorVersion are
     *   negative or larger than 255
     */
    public TlsMasterSecretParameterSpec(SecretKey premasterSecret,
            int majorVersion, int minorVersion,
            byte[] clientRandom, byte[] serverRandom) {
        if (premasterSecret == null) {
            throw new NullPointerException("premasterSecret must not be null");
        }
        this.premasterSecret = premasterSecret;
        this.majorVersion = checkVersion(majorVersion);
        this.minorVersion = checkVersion(minorVersion);
        this.clientRandom = clientRandom.clone();
        this.serverRandom = serverRandom.clone();
        this.extendedMasterSecretSessionHash = new byte[0];
    }

    
Constructs a new TlsMasterSecretParameterSpec.
The getAlgorithm() method of premasterSecret
should return "TlsRsaPremasterSecret" if the key exchange
algorithm was RSA and "TlsPremasterSecret" otherwise.
Params:
premasterSecret – the premaster secret
majorVersion – the major number of the protocol version
minorVersion – the minor number of the protocol version
extendedMasterSecretSessionHash – the session hash for
       Extended Master Secret
Throws:
NullPointerException – if premasterSecret is null
IllegalArgumentException – if minorVersion or majorVersion are
  negative or larger than 255/**
     * Constructs a new TlsMasterSecretParameterSpec.
     *
     * <p>The <code>getAlgorithm()</code> method of <code>premasterSecret</code>
     * should return <code>"TlsRsaPremasterSecret"</code> if the key exchange
     * algorithm was RSA and <code>"TlsPremasterSecret"</code> otherwise.
     *
     * @param premasterSecret the premaster secret
     * @param majorVersion the major number of the protocol version
     * @param minorVersion the minor number of the protocol version
     * @param extendedMasterSecretSessionHash the session hash for
     *        Extended Master Secret
     *
     * @throws NullPointerException if premasterSecret is null
     * @throws IllegalArgumentException if minorVersion or majorVersion are
     *   negative or larger than 255
     */
    public TlsMasterSecretParameterSpec(SecretKey premasterSecret,
            int majorVersion, int minorVersion,
            byte[] extendedMasterSecretSessionHash) {
        if (premasterSecret == null) {
            throw new NullPointerException("premasterSecret must not be null");
        }
        this.premasterSecret = premasterSecret;
        this.majorVersion = checkVersion(majorVersion);
        this.minorVersion = checkVersion(minorVersion);
        this.clientRandom = new byte[0];
        this.serverRandom = new byte[0];
        this.extendedMasterSecretSessionHash =
                (extendedMasterSecretSessionHash != null ?
                        extendedMasterSecretSessionHash.clone() : new byte[0]);
    }

    static int checkVersion(int version) {
        if ((version < 0) || (version > 255)) {
            throw new IllegalArgumentException(
                        "Version must be between 0 and 255");
        }
        return version;
    }

    
Returns the premaster secret.
Returns:
the premaster secret./**
     * Returns the premaster secret.
     *
     * @return the premaster secret.
     */
    public SecretKey getPremasterSecret() {
        return premasterSecret;
    }

    
Returns the major version number.
Returns:
the major version number./**
     * Returns the major version number.
     *
     * @return the major version number.
     */
    public int getMajorVersion() {
        return majorVersion;
    }

    
Returns the minor version number.
Returns:
the minor version number./**
     * Returns the minor version number.
     *
     * @return the minor version number.
     */
    public int getMinorVersion() {
        return minorVersion;
    }

    
Returns a copy of the client's random value.
Returns:
a copy of the client's random value./**
     * Returns a copy of the client's random value.
     *
     * @return a copy of the client's random value.
     */
    public byte[] getClientRandom() {
        return clientRandom.clone();
    }

    
Returns a copy of the server's random value.
Returns:
a copy of the server's random value./**
     * Returns a copy of the server's random value.
     *
     * @return a copy of the server's random value.
     */
    public byte[] getServerRandom() {
        return serverRandom.clone();
    }

    
+     * Returns a copy of the Extended Master Secret session hash.
+     *
+     * @return a copy of the Extended Master Secret session hash, or an empty
+     *         array if no extended master secret session hash was provided
+     *         at instantiation time
+     /**
     +     * Returns a copy of the Extended Master Secret session hash.
     +     *
     +     * @return a copy of the Extended Master Secret session hash, or an empty
     +     *         array if no extended master secret session hash was provided
     +     *         at instantiation time
     +     */
    public byte[] getExtendedMasterSecretSessionHash() {
        return extendedMasterSecretSessionHash.clone();
    }
}