android-platform-libcore/support/src/test/java/tests/security/AlgorithmParameterKeyAgreementHelper.java

/*
 * Copyright (C) 2009 The Android Open Source Project
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package tests.security;

import java.security.AlgorithmParameters;
import java.security.InvalidKeyException;
import java.security.KeyPair;
import java.security.KeyPairGenerator;
import java.security.NoSuchAlgorithmException;
import javax.crypto.KeyAgreement;
import junit.framework.Assert;

public class AlgorithmParameterKeyAgreementHelper extends TestHelper<AlgorithmParameters> {

    private final String algorithmName;

    public AlgorithmParameterKeyAgreementHelper(String algorithmName) {
        this.algorithmName = algorithmName;
    }

    @Override
    public void test(AlgorithmParameters parameters) {

        KeyPairGenerator generator = null;
        try {
            generator = KeyPairGenerator.getInstance(algorithmName);
        } catch (NoSuchAlgorithmException e) {
            Assert.fail(e.getMessage());
        }

        generator.initialize(1024);

        KeyPair keyPair = generator.generateKeyPair();

        KeyAgreement keyAgreement = null;
        try {
            keyAgreement = KeyAgreement.getInstance(algorithmName);
        } catch (NoSuchAlgorithmException e) {
            Assert.fail(e.getMessage());
        }

        try {
            keyAgreement.init(keyPair.getPrivate());
        } catch (InvalidKeyException e) {
            Assert.fail(e.getMessage());
        }
        try {
            keyAgreement.doPhase(keyPair.getPublic(), true);
        } catch (InvalidKeyException e) {
            Assert.fail(e.getMessage());
        } catch (IllegalStateException e) {
            Assert.fail(e.getMessage());
        }
        Assert.assertNotNull("generated secret is null", keyAgreement
                .generateSecret());
    }
}