/*

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

 *

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 * 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.

 *

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 */

/*

 * @test

 * @bug 8214096

 * @summary Make sure SignatureUtil can accept null algorithm parameters

 * @modules java.base/sun.security.util

 */

import java.security.*;

import java.security.spec.AlgorithmParameterSpec;

import sun.security.util.SignatureUtil;

public class SetNullSigParams {

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

        Signature sig = new SpecialSigImpl();

        SignatureUtil.specialSetParameter(sig, (byte[]) null);

        SignatureUtil.specialSetParameter(sig, (AlgorithmParameters) null);

    }

    // Sample Signature impl class which simulates 3rd party provider behavior

    // and throws NPE when given null algorithm parameters

    // For max backward-compatibility, sun.security.util.SignatureUtil class

    // now calls setParameter() only when algorithm parameters is non-null

    private static class SpecialSigImpl extends Signature {

        SpecialSigImpl() {

            super("ANY");

        }

        @Override

        protected void engineInitVerify(PublicKey publicKey)

                throws InvalidKeyException {}

        @Override

        protected void engineInitSign(PrivateKey privateKey)

                throws InvalidKeyException {}

        @Override

        protected void engineUpdate(byte b) throws SignatureException {}

        @Override

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

                throws SignatureException {}

        @Override

        protected byte[] engineSign() throws SignatureException { return null; }

        @Override

        protected boolean engineVerify(byte[] sigBytes)

                throws SignatureException { return false; }

        @Override

        protected void engineSetParameter(String param, Object value)

                throws InvalidParameterException {}

        @Override

        protected void engineSetParameter(AlgorithmParameterSpec params)

                throws InvalidAlgorithmParameterException {

            if (params == null) throw new NullPointerException("Test Failed");

        }

        @Override

        protected Object engineGetParameter(String param)

                throws InvalidParameterException { return null; }

    }

}