GenerateKeyPair.java

/**
 * This file only serves as an example on how to get keys in the right encoding. 
 * This outputs the keys in the PKCS8 format for the private key and the X509 format for the publickey
 * 
 * DO NOT USE THEM IN PRODUCTION UNLESS THE KEYSPECS ARE OK FOR YOU
 */
import java.io.FileOutputStream;
import java.io.IOException;
import java.security.Key;
import java.security.KeyPair;
import java.security.KeyPairGenerator;
import java.security.NoSuchAlgorithmException;
import java.security.PrivateKey;
import java.security.PublicKey;
import java.util.Base64;

import java.security.Security;

public class GenerateKeyPair{
    public static void main(String[] args) throws Exception {
		Security.setProperty("crypto.policy", "unlimited");
		KeyPairGenerator generator =  KeyPairGenerator.getInstance("RSA");
		KeyPair pair = generator.genKeyPair();
		PrivateKey privateKey = pair.getPrivate();
		PublicKey publicKey = pair.getPublic();
		FileOutputStream outputStream = new FileOutputStream("generated_pub.pem");
		outputStream.write(Base64.getEncoder().encode(publicKey.getEncoded()));
        outputStream.close();
        
        outputStream = new FileOutputStream("generated_private.pem");
		outputStream.write(Base64.getEncoder().encode(privateKey.getEncoded()));
		outputStream.close();
    }
}