import org.apache.commons.codec.binary.Base64;

import java.security.KeyPair;

import java.security.KeyPairGenerator;

import java.security.PrivateKey;

import java.security.PublicKey;

/**

* @author 程英华

* @description 基于RSA非对称加密算法生成公私钥

* @date 2019-05-17

**/

public class Main {

public static void main(String[] args) {

try {

KeyPairGenerator keyPairGen = KeyPairGenerator.getInstance("RSA");

            keyPairGen.initialize(2048); // 指定位数

            KeyPair keyPair = keyPairGen.generateKeyPair();

            PublicKey publicKey = keyPair.getPublic();

            PrivateKey privateKey = keyPair.getPrivate();

            System.out.println(Base64.encodeBase64String(publicKey.getEncoded()));

            System.out.println();

            System.out.println(Base64.encodeBase64String(privateKey.getEncoded()));

        }catch (Exception e) {

e.printStackTrace();

        }

}

}