my.adam.smo.RsaKeyGen.java Source code

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Here is the source code for my.adam.smo.RsaKeyGen.java

Source

package my.adam.smo;

import org.bouncycastle.util.encoders.Base64;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

import java.security.KeyPair;
import java.security.KeyPairGenerator;
import java.security.NoSuchAlgorithmException;
import java.security.spec.PKCS8EncodedKeySpec;
import java.security.spec.X509EncodedKeySpec;

/**
 * The MIT License
 * <p/>
 * Copyright (c) 2013 Adam Smolarek
 * <p/>
 * Permission is hereby granted, free of charge, to any person obtaining a copy
 * of this software and associated documentation files (the "Software"), to deal
 * in the Software without restriction, including without limitation the rights
 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
 * copies of the Software, and to permit persons to whom the Software is
 * furnished to do so, subject to the following conditions:
 * <p/>
 * The above copyright notice and this permission notice shall be included in
 * all copies or substantial portions of the Software.
 * <p/>
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
 * THE SOFTWARE.
 */
public class RsaKeyGen {
    private static Logger logger = LoggerFactory.getLogger(RsaKeyGen.class);

    public static void main(String[] args) {
        KeyPairGenerator keyGen;
        try {
            keyGen = KeyPairGenerator.getInstance("RSA");
        } catch (NoSuchAlgorithmException e) {
            logger.error("fail to get generator");
            return;
        }

        keyGen.initialize(2048);
        KeyPair kp = keyGen.generateKeyPair();

        PKCS8EncodedKeySpec prv = new PKCS8EncodedKeySpec(kp.getPrivate().getEncoded());
        X509EncodedKeySpec pub = new X509EncodedKeySpec(kp.getPublic().getEncoded());

        logger.debug("conf entries as below:");
        logger.debug("prv=" + new String(Base64.encode(prv.getEncoded())), "UTF-8");
        logger.debug("pub=" + new String(Base64.encode(pub.getEncoded())), "UTF-8");
    }
}