RSACryptoTests.java

/**
 * Copyright (C) 2011 Adriano Monteiro Marques
 *
 * Author:  Zubair Nabi <zn.zubairnabi@gmail.com>
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 2 of the License, or
 * (at your option) any later version.
 *
 * This program 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 for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
 * USA
 */

package org.umit.icm.mobile.test.utils;


import java.security.KeyFactory;
import java.security.KeyPair;
import java.security.spec.RSAPrivateKeySpec;
import java.security.spec.RSAPublicKeySpec;

import org.apache.commons.codec.binary.Base64;
import org.umit.icm.mobile.utils.RSACrypto;

import junit.framework.Assert;
import android.test.AndroidTestCase;


public class RSACryptoTests extends AndroidTestCase {
	private KeyPair keyPair;
	
    public void testPublicEncryptDecrypt() throws Throwable {
    	keyPair = RSACrypto.generateKey();
    	String cipherText = RSACrypto.encryptPublic(keyPair.getPublic(), "This is a test string");
        Assert.assertEquals("This is a test string", RSACrypto.decryptPrivate(keyPair.getPrivate(), cipherText));
    }
    
    public void testPrivateEncryptDecrypt() throws Throwable {
    	keyPair = RSACrypto.generateKey();
    	String cipherText = RSACrypto.encryptPrivate(keyPair.getPrivate(), "This is a test string");
        Assert.assertEquals("This is a test string", RSACrypto.decryptPublic(keyPair.getPublic(), cipherText));
    }
     
    public void testPublicReadWrite() throws Throwable {
    	keyPair = RSACrypto.generateKey();
    	KeyFactory keyFactory = KeyFactory.getInstance("RSA");
    	RSAPublicKeySpec publicKeySpec = keyFactory.getKeySpec(keyPair.getPublic()
    			, RSAPublicKeySpec.class);
    	RSACrypto.saveKey("rsaKey.pub", publicKeySpec.getModulus()
    			, publicKeySpec.getPublicExponent());
        Assert.assertEquals(RSACrypto.readPublicKey("rsaKey.pub") 
        		,keyPair.getPublic());
    }
    
    public void testPrivateReadWrite() throws Throwable {
    	keyPair = RSACrypto.generateKey();
    	KeyFactory keyFactory = KeyFactory.getInstance("RSA");
    	RSAPrivateKeySpec privateKeySpec = keyFactory.getKeySpec(keyPair.getPrivate()
    			, RSAPrivateKeySpec.class);
    	RSACrypto.saveKey("rsaKey.priv", privateKeySpec.getModulus()
    			, privateKeySpec.getPrivateExponent());
        Assert.assertEquals(RSACrypto.readPrivateKey("rsaKey.priv")
        		, keyPair.getPrivate());
    }
    
    public void testPublicStringConversion() throws Throwable {
    	keyPair = RSACrypto.generateKey();
    	String publicKey 
    	= new String(Base64.encodeBase64(keyPair.getPublic().getEncoded()));    	
        Assert.assertEquals(RSACrypto.stringToPublicKey(publicKey)
        		,keyPair.getPublic());
    }
    
    public void testPrivateStringConversion() throws Throwable {
    	keyPair = RSACrypto.generateKey();    	
    	String privateKey 
    	= new String(Base64.encodeBase64(keyPair.getPrivate().getEncoded()));    	
        Assert.assertEquals(RSACrypto.stringToPrivateKey(privateKey)
        		,keyPair.getPrivate());
    }

}