/*

 * Copyright (c) 2016, 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 8165751

 * @summary Verify that that a subclass of Signature that does not contain a

 *     provider can be used to verify.

 * @run main/othervm -Djava.security.debug=provider NoProvider

 */

import java.security.*;

public class NoProvider {

    private static class NoProviderPublicKey implements PublicKey {

        public String getAlgorithm() {

            return "NoProvider";

        }

        public String getFormat() {

            return "none";

        }

        public byte[] getEncoded() {

            return new byte[1];

        }

    }

    private static class NoProviderSignature extends Signature {

        public NoProviderSignature() {

            super("NoProvider");

        }

        protected void engineInitVerify(PublicKey publicKey)

            throws InvalidKeyException {

            // do nothing

        }

        protected void engineInitSign(PrivateKey privateKey)

            throws InvalidKeyException {

            // do nothing

        }

        protected void engineUpdate(byte b) throws SignatureException {

            // do nothing

        }

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

            throws SignatureException {

            // do nothing

        }

        protected byte[] engineSign() throws SignatureException {

            return new byte[1];

        }

        protected boolean engineVerify(byte[] sigBytes)

            throws SignatureException {

            return false;

        }

        @Deprecated

        protected void engineSetParameter(String param, Object value)

            throws InvalidParameterException {

            // do nothing

        }

        @Deprecated

        protected Object engineGetParameter(String param)

            throws InvalidParameterException {

            return null;

        }

    }

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

        new NoProviderSignature().initVerify(new NoProviderPublicKey());

    }

}