de.rub.nds.tlsattacker.attacks.pkcs1.BleichenbacherAttackPlaintextTest.java Source code

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Here is the source code for de.rub.nds.tlsattacker.attacks.pkcs1.BleichenbacherAttackPlaintextTest.java

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/**
 * TLS-Attacker - A Modular Penetration Testing Framework for TLS.
 *
 * Copyright (C) 2015 Chair for Network and Data Security,
 *                    Ruhr University Bochum
 *                    (juraj.somorovsky@rub.de)
 *
 * 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 de.rub.nds.tlsattacker.attacks.pkcs1;

import de.rub.nds.tlsattacker.attacks.pkcs1.oracles.Pkcs1Oracle;
import de.rub.nds.tlsattacker.attacks.pkcs1.oracles.TestPkcs1Oracle;
import de.rub.nds.tlsattacker.attacks.pkcs1.oracles.StdPlainPkcs1Oracle;
import java.math.BigInteger;
import java.security.KeyPair;
import java.security.KeyPairGenerator;
import java.security.SecureRandom;
import java.security.Security;
import javax.crypto.Cipher;
import org.apache.logging.log4j.LogManager;
import org.bouncycastle.jce.provider.BouncyCastleProvider;
import org.junit.Assert;
import org.junit.Test;

/**
 * 
 * @author Juraj Somorovsky - juraj.somorovsky@rub.de
 */
public class BleichenbacherAttackPlaintextTest {

    private static final int PREMASTER_SECRET_LENGTH = 48;

    @Test
    public final void testBleichenbacherAttack() throws Exception {

        Security.addProvider(new BouncyCastleProvider());
        KeyPairGenerator keyPairGenerator = KeyPairGenerator.getInstance("RSA");
        keyPairGenerator.initialize(2048);
        KeyPair keyPair = keyPairGenerator.genKeyPair();

        SecureRandom sr = new SecureRandom();
        byte[] plainBytes = new byte[PREMASTER_SECRET_LENGTH];
        sr.nextBytes(plainBytes);
        byte[] cipherBytes;

        Cipher cipher = Cipher.getInstance("RSA/None/PKCS1Padding");
        cipher.init(Cipher.ENCRYPT_MODE, keyPair.getPublic());
        cipherBytes = cipher.doFinal(plainBytes);

        cipher = Cipher.getInstance("RSA/None/NoPadding");
        cipher.init(Cipher.DECRYPT_MODE, keyPair.getPrivate());
        byte[] message = cipher.doFinal(cipherBytes);

        Pkcs1Oracle oracle = new StdPlainPkcs1Oracle(keyPair.getPublic(), TestPkcs1Oracle.OracleType.TTT,
                cipher.getBlockSize());

        Bleichenbacher attacker = new Bleichenbacher(message, oracle, true);
        attacker.attack();
        BigInteger solution = attacker.getSolution();

        Assert.assertArrayEquals("The computed solution for Bleichenbacher must be equal to the original message",
                message, solution.toByteArray());
    }
}