/*

 * Copyright (c) 2004, 2019, 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

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 */

/*

 */

package sun.security.krb5.internal.crypto;

/**

 * Key usages used for key derivation in Kerberos.

 */

public class KeyUsage {

    private KeyUsage() {

    }

    public static final int KU_UNKNOWN = 0;                     // Cannot be 0

    // Defined in draft-yu-krb-wg-kerberos-extensions-00.txt, Appendix A

    public static final int KU_PA_ENC_TS = 1;                   // KrbAsReq

    public static final int KU_TICKET = 2;                      // KrbApReq (ticket)

    public static final int KU_ENC_AS_REP_PART = 3;             // KrbAsRep

    public static final int KU_TGS_REQ_AUTH_DATA_SESSKEY= 4;    // KrbTgsReq

    public static final int KU_TGS_REQ_AUTH_DATA_SUBKEY = 5;    // KrbTgsReq

    public static final int KU_PA_TGS_REQ_CKSUM = 6;            // KrbTgsReq

    public static final int KU_PA_TGS_REQ_AUTHENTICATOR = 7;    // KrbApReq

    public static final int KU_ENC_TGS_REP_PART_SESSKEY = 8;    // KrbTgsRep

    public static final int KU_ENC_TGS_REP_PART_SUBKEY = 9;     // KrbTgsRep

    public static final int KU_AUTHENTICATOR_CKSUM = 10;

    public static final int KU_AP_REQ_AUTHENTICATOR = 11;       // KrbApReq

    public static final int KU_ENC_AP_REP_PART = 12;            // KrbApRep

    public static final int KU_ENC_KRB_PRIV_PART = 13;          // KrbPriv

    public static final int KU_ENC_KRB_CRED_PART = 14;          // KrbCred

    public static final int KU_KRB_SAFE_CKSUM = 15;             // KrbSafe

    public static final int KU_PA_FOR_USER_ENC_CKSUM = 17;      // S4U2user

    public static final int KU_AD_KDC_ISSUED_CKSUM = 19;

    public static final int KU_AS_REQ = 56;

    public static final boolean isValid(int usage) {

        return usage >= 0;

    }

}