com.licel.jcardsim.crypto.RSACipherTest.java Source code

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Here is the source code for com.licel.jcardsim.crypto.RSACipherTest.java

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/*
 * Copyright 2013 Licel LLC.
 *
 * 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 com.licel.jcardsim.crypto;

import javacard.security.KeyBuilder;
import javacard.security.RandomData;
import javacard.security.RSAPrivateKey;
import javacard.security.RSAPublicKey;
import javacardx.crypto.Cipher;
import junit.framework.TestCase;
import org.bouncycastle.util.Arrays;

/**
 * Test for <code>AsymmetricCipherImpl</code> and <code>ByteContainer.getBigInteger()</code> method.
 */
public class RSACipherTest extends TestCase {

    // RSA keypair data
    private static final byte[] rsaPrivateKeyModulus = { (byte) 0xbe, (byte) 0xdf, (byte) 0xd3, (byte) 0x7a,
            (byte) 0x08, (byte) 0xe2, (byte) 0x9a, (byte) 0x58, (byte) 0x27, (byte) 0x54, (byte) 0x2a, (byte) 0x49,
            (byte) 0x18, (byte) 0xce, (byte) 0xe4, (byte) 0x1a, (byte) 0x60, (byte) 0xdc, (byte) 0x62, (byte) 0x75,
            (byte) 0xbd, (byte) 0xb0, (byte) 0x8d, (byte) 0x15, (byte) 0xa3, (byte) 0x65, (byte) 0xe6, (byte) 0x7b,
            (byte) 0xa9, (byte) 0xdc, (byte) 0x09, (byte) 0x11, (byte) 0x5f, (byte) 0x9f, (byte) 0xbf, (byte) 0x29,
            (byte) 0xe6, (byte) 0xc2, (byte) 0x82, (byte) 0xc8, (byte) 0x35, (byte) 0x6b, (byte) 0x0f, (byte) 0x10,
            (byte) 0x9b, (byte) 0x19, (byte) 0x62, (byte) 0xfd, (byte) 0xbd, (byte) 0x96, (byte) 0x49, (byte) 0x21,
            (byte) 0xe4, (byte) 0x22, (byte) 0x08, (byte) 0x08, (byte) 0x80, (byte) 0x6c, (byte) 0xd1, (byte) 0xde,
            (byte) 0xa6, (byte) 0xd3, (byte) 0xc3, (byte) 0x8f };

    private static final byte[] rsaPrivateKeyExponent = { (byte) 0x84, (byte) 0x21, (byte) 0xfe, (byte) 0x0b,
            (byte) 0xa4, (byte) 0xca, (byte) 0xf9, (byte) 0x7d, (byte) 0xbc, (byte) 0xfc, (byte) 0x0e, (byte) 0xa9,
            (byte) 0xbb, (byte) 0x7a, (byte) 0xbd, (byte) 0x7d, (byte) 0x65, (byte) 0x40, (byte) 0x2b, (byte) 0x08,
            (byte) 0xc6, (byte) 0xdf, (byte) 0xc9, (byte) 0x4b, (byte) 0x09, (byte) 0x6a, (byte) 0x29, (byte) 0x3b,
            (byte) 0xc2, (byte) 0x42, (byte) 0x88, (byte) 0x23, (byte) 0x44, (byte) 0xaf, (byte) 0x08, (byte) 0x82,
            (byte) 0x4c, (byte) 0xff, (byte) 0x42, (byte) 0xa4, (byte) 0xb8, (byte) 0xd2, (byte) 0xda, (byte) 0xcc,
            (byte) 0xee, (byte) 0xc5, (byte) 0x34, (byte) 0xed, (byte) 0x71, (byte) 0x01, (byte) 0xab, (byte) 0x3b,
            (byte) 0x76, (byte) 0xde, (byte) 0x6c, (byte) 0xa2, (byte) 0xcb, (byte) 0x7c, (byte) 0x38, (byte) 0xb6,
            (byte) 0x9a, (byte) 0x4b, (byte) 0x28, (byte) 0x01 };

    private static final byte[] rsaPublicKeyExponent = { (byte) 0x01, (byte) 0x00, (byte) 0x01 };

    public RSACipherTest(String testName) {
        super(testName);
    }

    protected void setUp() throws Exception {
        super.setUp();
    }

    protected void tearDown() throws Exception {
        super.tearDown();
    }

    /**
     * SelfTest of RSA Encryption/Decryption, of class AsymmetricCipherImpl and ByteContainer.getBigInteger() method.
     */
    public void testSelfRSA() {
        Cipher cipher = Cipher.getInstance(Cipher.ALG_RSA_NOPAD, false);

        RSAPrivateKey privateKey = (RSAPrivateKey) KeyBuilder.buildKey(KeyBuilder.TYPE_RSA_PRIVATE,
                KeyBuilder.LENGTH_RSA_512, false);
        RSAPublicKey publicKey = (RSAPublicKey) KeyBuilder.buildKey(KeyBuilder.TYPE_RSA_PUBLIC,
                KeyBuilder.LENGTH_RSA_512, false);

        privateKey.setExponent(rsaPrivateKeyExponent, (short) 0, (short) rsaPrivateKeyExponent.length);
        privateKey.setModulus(rsaPrivateKeyModulus, (short) 0, (short) rsaPrivateKeyModulus.length);
        publicKey.setExponent(rsaPublicKeyExponent, (short) 0, (short) rsaPublicKeyExponent.length);
        publicKey.setModulus(rsaPrivateKeyModulus, (short) 0, (short) rsaPrivateKeyModulus.length);

        cipher.init(publicKey, Cipher.MODE_ENCRYPT);
        byte[] msg = new byte[63];
        byte[] encryptedMsg = new byte[64];
        RandomData rnd = RandomData.getInstance(RandomData.ALG_PSEUDO_RANDOM);
        rnd.generateData(msg, (short) 0, (short) msg.length);
        cipher.doFinal(msg, (short) 0, (short) msg.length, encryptedMsg, (short) 0);

        cipher.init(privateKey, Cipher.MODE_DECRYPT);
        byte[] decryptedMsg = new byte[msg.length];
        cipher.doFinal(encryptedMsg, (short) 0, (short) encryptedMsg.length, decryptedMsg, (short) 0);

        assertEquals(true, Arrays.areEqual(msg, decryptedMsg));
    }
}