1 /*

     2  * Copyright (c) 2013, Oracle and/or its affiliates. All rights reserved.

     3  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.

     4  *

     5  * This code is free software; you can redistribute it and/or modify it

     6  * under the terms of the GNU General Public License version 2 only, as

     7  * published by the Free Software Foundation.

     8  *

     9  * This code is distributed in the hope that it will be useful, but WITHOUT

    10  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or

    11  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License

    12  * version 2 for more details (a copy is included in the LICENSE file that

    13  * accompanied this code).

    14  *

    15  * You should have received a copy of the GNU General Public License version

    16  * 2 along with this work; if not, write to the Free Software Foundation,

    17  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.

    18  *

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

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

    21  * questions.

    22  */

    23 

    24 /*

    25  * Portions Copyright (c) 2013 IBM Corporation

    26  */

    27 

    28 /*

    29  * @test

    30  * @bug 8014620

    31  * @summary Signature.getAlgorithm return null in special case

    32  * @run main/othervm SignatureGetAlgorithm

    33  * @author youdwei

    34  */

    35 import java.security.*;

    36 

    37 public class SignatureGetAlgorithm {

    38 

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

    40         Provider testProvider = new TestProvider();

    41         Security.addProvider(testProvider);

    42         Signature sig = Signature.getInstance("MySignatureAlg");

    43         String algorithm = sig.getAlgorithm();

    44         System.out.println("Algorithm Name: " + algorithm);

    45         if (algorithm == null) {

    46             throw new Exception("algorithm name should be 'MySignatureAlg'");

    47         }

    48     }

    49 

    50     public static class TestProvider extends Provider {

    51         TestProvider() {

    52             super("test", 1.0, "test");

    53             put("Signature.MySignatureAlg",

    54                 "SignatureGetAlgorithm$MySignatureAlg");

    55         }

    56     }

    57 

    58     public static class MySignatureAlg extends Signature {

    59 

    60         public MySignatureAlg() {

    61             super(null);

    62         }

    63 

    64         MySignatureAlg(String s) {

    65             super(s);

    66         }

    67 

    68         @Override

    69         protected void engineInitVerify(PublicKey publicKey)

    70                 throws InvalidKeyException {

    71         }

    72 

    73         @Override

    74         protected void engineInitSign(PrivateKey privateKey)

    75                 throws InvalidKeyException {

    76         }

    77 

    78         @Override

    79         protected void engineUpdate(byte b) throws SignatureException {

    80         }

    81 

    82         @Override

    83         protected void engineUpdate(byte[] b, int off, int len)

    84                 throws SignatureException {

    85         }

    86 

    87         @Override

    88         protected byte[] engineSign()

    89                 throws SignatureException {

    90             return new byte[0];

    91         }

    92 

    93         @Override

    94         protected boolean engineVerify(byte[] sigBytes)

    95                 throws SignatureException {

    96             return false;

    97         }

    98 

    99         @Override

   100         @Deprecated

   101         protected void engineSetParameter(String param, Object value)

   102                 throws InvalidParameterException {

   103         }

   104 

   105         @Override

   106         @Deprecated

   107         protected Object engineGetParameter(String param)

   108                 throws InvalidParameterException {

   109             return null;

   110         }

   111     }

   112 }