luni/src/test/java/libcore/javax/crypto/spec/KeyFactoryTestRSA.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 libcore.javax.crypto.spec;

import java.security.KeyFactory;
import java.security.KeyPair;
import java.security.PrivateKey;
import java.security.PublicKey;
import java.security.spec.PKCS8EncodedKeySpec;
import java.security.spec.RSAPrivateKeySpec;
import java.security.spec.RSAPublicKeySpec;
import java.security.spec.X509EncodedKeySpec;
import tests.security.CipherAsymmetricCryptHelper;
import tests.security.DefaultKeys;
import tests.security.KeyFactoryTest;

public class KeyFactoryTestRSA extends
        KeyFactoryTest<RSAPublicKeySpec, RSAPrivateKeySpec> {

    @SuppressWarnings("unchecked")
    public KeyFactoryTestRSA() {
        super("RSA", RSAPublicKeySpec.class, RSAPrivateKeySpec.class);
    }

    @Override
    protected void check(KeyPair keyPair) throws Exception {
        new CipherAsymmetricCryptHelper("RSA").test(keyPair);
    }

    public void testExtraBufferSpace() throws Exception {
        PrivateKey privateKey = DefaultKeys.getPrivateKey("RSA");
        byte[] encoded = privateKey.getEncoded();
        byte[] longBuffer = new byte[encoded.length + 147];
        System.arraycopy(encoded, 0, longBuffer, 0, encoded.length);
        KeyFactory.getInstance("RSA").generatePrivate(new PKCS8EncodedKeySpec(longBuffer));

        PublicKey publicKey = DefaultKeys.getPublicKey("RSA");
        encoded = publicKey.getEncoded();
        longBuffer = new byte[encoded.length + 147];
        System.arraycopy(encoded, 0, longBuffer, 0, encoded.length);
        KeyFactory.getInstance("RSA").generatePublic(new X509EncodedKeySpec(longBuffer));
    }
}