RSAKeygen.java

/*
 * Copyright (C) 2011 Vex Software LLC
 * This file is part of Votifier.
 * 
 * Votifier 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 3 of the License, or
 * (at your option) any later version.
 * 
 * Votifier 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 Votifier.  If not, see <http://www.gnu.org/licenses/>.
 */

package com.vexsoftware.votifier.crypto;

import java.security.KeyPair;
import java.security.KeyPairGenerator;
import java.security.spec.RSAKeyGenParameterSpec;
import java.util.logging.Logger;

/**
 * An RSA key pair generator.
 * 
 * @author Blake Beaupain
 */
public class RSAKeygen {

	/** The logger instance. */
	private static final Logger LOG = Logger.getLogger("Votifier");

	/**
	 * Generates an RSA key pair.
	 * 
	 * @param bits
	 *            The amount of bits
	 * @return The key pair
	 */
	public static KeyPair generate(int bits) throws Exception {
		LOG.info("Votifier is generating an RSA key pair...");
		KeyPairGenerator keygen = KeyPairGenerator.getInstance("RSA");
		RSAKeyGenParameterSpec spec = new RSAKeyGenParameterSpec(bits,
				RSAKeyGenParameterSpec.F4);
		keygen.initialize(spec);
		return keygen.generateKeyPair();
	}

}