jdk/src/java.base/share/classes/sun/security/internal/spec/TlsKeyMaterialSpec.java

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 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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 * published by the Free Software Foundation.  Oracle designates this
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 * 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
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 * accompanied this code).
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package sun.security.internal.spec;

import java.security.spec.KeySpec;

import javax.crypto.SecretKey;
import javax.crypto.spec.IvParameterSpec;

/**
 * KeySpec class for SSL/TLS key material.
 *
 * <p>Instances of this class are returned by the <code>generateKey()</code>
 * method of KeyGenerators of the type "TlsKeyMaterial".
 * Instances of this class are immutable.
 *
 * @since   1.6
 * @author  Andreas Sterbenz
 * @deprecated Sun JDK internal use only --- WILL BE REMOVED in a future
 * release.
 */
@Deprecated
public class TlsKeyMaterialSpec implements KeySpec, SecretKey {

    @java.io.Serial
    static final long serialVersionUID = 812912859129525028L;

    private final SecretKey clientMacKey, serverMacKey;
    private final SecretKey clientCipherKey, serverCipherKey;

    @SuppressWarnings("serial") // Not statically typed as Serializable
    private final IvParameterSpec clientIv;
    @SuppressWarnings("serial") // Not statically typed as Serializable
    private final IvParameterSpec serverIv;

    /**
     * Constructs a new TlsKeymaterialSpec from the client and server MAC
     * keys.
     * This call is equivalent to
     * <code>new TlsKeymaterialSpec(clientMacKey, serverMacKey,
     * null, null, null, null)</code>.
     *
     * @param clientMacKey the client MAC key (or null)
     * @param serverMacKey the server MAC key (or null)
     */
    public TlsKeyMaterialSpec(SecretKey clientMacKey, SecretKey serverMacKey) {
        this(clientMacKey, serverMacKey, null, null, null, null);
    }

    /**
     * Constructs a new TlsKeymaterialSpec from the client and server MAC
     * keys and client and server cipher keys.
     * This call is equivalent to
     * <code>new TlsKeymaterialSpec(clientMacKey, serverMacKey,
     * clientCipherKey, serverCipherKey, null, null)</code>.
     *
     * @param clientMacKey the client MAC key (or null)
     * @param serverMacKey the server MAC key (or null)
     * @param clientCipherKey the client cipher key (or null)
     * @param serverCipherKey the server cipher key (or null)
     */
    public TlsKeyMaterialSpec(SecretKey clientMacKey, SecretKey serverMacKey,
            SecretKey clientCipherKey, SecretKey serverCipherKey) {
        this(clientMacKey, serverMacKey, clientCipherKey, null,
            serverCipherKey, null);
    }

    /**
     * Constructs a new TlsKeymaterialSpec from the client and server MAC
     * keys, client and server cipher keys, and client and server
     * initialization vectors.
     *
     * @param clientMacKey the client MAC key (or null)
     * @param serverMacKey the server MAC key (or null)
     * @param clientCipherKey the client cipher key (or null)
     * @param clientIv the client initialization vector (or null)
     * @param serverCipherKey the server cipher key (or null)
     * @param serverIv the server initialization vector (or null)
     */
    public TlsKeyMaterialSpec(SecretKey clientMacKey, SecretKey serverMacKey,
            SecretKey clientCipherKey, IvParameterSpec clientIv,
            SecretKey serverCipherKey, IvParameterSpec serverIv) {

        this.clientMacKey = clientMacKey;
        this.serverMacKey = serverMacKey;
        this.clientCipherKey = clientCipherKey;
        this.serverCipherKey = serverCipherKey;
        this.clientIv = clientIv;
        this.serverIv = serverIv;
    }

    /**
     * Returns <code>TlsKeyMaterial</code>.
     *
     * @return <code>TlsKeyMaterial</code>.
     */
    public String getAlgorithm() {
        return "TlsKeyMaterial";
    }

    /**
     * Returns <code>null</code> because keys of this type have no encoding.
     *
     * @return <code>null</code> because keys of this type have no encoding.
     */
    public String getFormat() {
        return null;
    }

    /**
     * Returns <code>null</code> because keys of this type have no encoding.
     *
     * @return <code>null</code> because keys of this type have no encoding.
     */
    public byte[] getEncoded() {
        return null;
    }

    /**
     * Returns the client MAC key.
     *
     * @return the client MAC key (or null).
     */
    public SecretKey getClientMacKey() {
        return clientMacKey;
    }

    /**
     * Return the server MAC key.
     *
     * @return the server MAC key (or null).
     */
    public SecretKey getServerMacKey() {
        return serverMacKey;
    }

    /**
     * Return the client cipher key (or null).
     *
     * @return the client cipher key (or null).
     */
    public SecretKey getClientCipherKey() {
        return clientCipherKey;
    }

    /**
     * Return the client initialization vector (or null).
     *
     * @return the client initialization vector (or null).
     */
    public IvParameterSpec getClientIv() {
        return clientIv;
    }

    /**
     * Return the server cipher key (or null).
     *
     * @return the server cipher key (or null).
     */
    public SecretKey getServerCipherKey() {
        return serverCipherKey;
    }

    /**
     * Return the server initialization vector (or null).
     *
     * @return the server initialization vector (or null).
     */
    public IvParameterSpec getServerIv() {
        return serverIv;
    }

}