java生成RSA公私鑰字符串，簡單易懂

 

解決方法：

1.下載bcprov-jdk16-140.jar包，參考：http://www.yayihouse.com/yayishuwu/chapter/1537

2.java代碼

KeyPairGenerator keyPairGenerator = KeyPairGenerator

                   .getInstance("RSA");

           keyPairGenerator.initialize(2048);

           KeyPair keyPair = keyPairGenerator.generateKeyPair();

           RSAPublicKey publicKey = (RSAPublicKey) keyPair.getPublic();

           RSAPrivateKey privateKey = (RSAPrivateKey) keyPair.getPrivate();

           System.out.println("公鑰："+new BASE64Encoder().encodeBuffer(publicKey.getEncoded()));

           System.out.println("私鑰："+new BASE64Encoder().encodeBuffer(privateKey.getEncoded()));