UnsupportedKeyType.java

/*
 * Copyright (c) 2014, 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.
 *
 * 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.
 */

/*
 * @test
 * @bug 5006629
 * @summary Kerberos library should only select keys of types that it supports
 */

import javax.security.auth.kerberos.KerberosPrincipal;
import javax.security.auth.kerberos.KeyTab;
import java.io.File;
import java.nio.file.Files;
import java.nio.file.Paths;

public class UnsupportedKeyType {

    // Homemade keytab files:
    //
    // String   KVNO Timestamp      Principal (etype)
    // -------- ---- -------------- -----------------------
    // camellia    4 4/3/14 9:58 AM u1@K1 (25:camellia128-cts-cmac)
    // aes         5 4/3/14 9:58 AM u1@K1 (17:aes128-cts-hmac-sha1-96)

    static String aes =
            "050200000027000100024b310002753100000001533cc04f0500110010e0eab6" +
            "7f31608df2b2f8fffc6b21cc91";
    static String camellia =
            "050200000027000100024b310002753100000001533cc03e0400190010d88678" +
            "14e478b6b7d2d97375163b971e";

    public static void main(String[] args) throws Exception {

        byte[] data = new byte[aes.length()/2];
        KerberosPrincipal kp = new KerberosPrincipal("u1@K1");

        // aes128
        for (int i=0; i<data.length; i++) {
            data[i] = Integer.valueOf(
                    aes.substring(2*i,2*i+2), 16).byteValue();
        }
        Files.write(Paths.get("aes"), data);
        if(KeyTab.getInstance(kp, new File("aes")).getKeys(kp).length == 0) {
            throw new Exception("AES key not read");
        }

        // camellia128
        for (int i=0; i<data.length; i++) {
            data[i] = Integer.valueOf(
                    camellia.substring(2*i,2*i+2), 16).byteValue();
        }
        Files.write(Paths.get("camellia"), data);
        if(KeyTab.getInstance(kp, new File("camellia")).getKeys(kp).length != 0) {
            throw new Exception("Unknown key read");
        }
    }
}