/*

 * Copyright (c) 1996, 2018, Oracle and/or its affiliates. All rights reserved.

 * 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.  Oracle designates this

 * particular file as subject to the "Classpath" exception as provided

 * by Oracle in the LICENSE file that accompanied this code.

 *

 * 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.

 *

 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA

 * or visit www.oracle.com if you need additional information or have any

 * questions.

 */

package sun.security.ssl;

/**

 * DTLS record

 */

interface DTLSRecord extends Record {

    static final int    headerSize = 13;            // DTLS record header

    static final int    handshakeHeaderSize = 12;   // DTLS handshake header

    /*

     * The size of the header plus the max IV length

     */

    static final int    headerPlusMaxIVSize =

                                      headerSize        // header

                                    + maxIVLength;      // iv

    /*

     * The maximum size that may be increased when translating plaintext to

     * ciphertext fragment.

     */

    static final int    maxPlaintextPlusSize =

                                      headerSize        // header

                                    + maxIVLength       // iv

                                    + maxMacSize        // MAC or AEAD tag

                                    + maxPadding;       // block cipher padding

    /*

     * the maximum record size

     */

    static final int    maxRecordSize =

                                      headerPlusMaxIVSize   // header + iv

                                    + maxDataSize           // data

                                    + maxPadding            // padding

                                    + maxMacSize;           // MAC or AEAD tag

    /*

     * Minimum record size of Certificate handshake message.

     * Client sends a certificate message containing no certificates if no

     * suitable certificate is available.  That is, the certificate_list

     * structure has a length of zero.

     *

     *   struct {

     *       ASN.1Cert certificate_list<0..2^24-1>;

     *   } Certificate;

     */

    static final int    minCertPlaintextSize =

                                      headerSize            // record header

                                    + handshakeHeaderSize   // handshake header

                                    + 3;                    // cert list length

}