JS-RSA加密解密

　　在上一篇文章《Java使用RSA加密解密签名及校验》中，用java实现加密解密，但是在实际应用中，如前端页面用户输入的密码传输给后台服务前，需加密，也就是公钥加密，私钥解密。

　　首先把《Java使用RSA加密解密签名及校验》中稍加修改，把公私钥写在代码中来，如下所示：

package com.bijian.study;

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

public class MainTest {
 
	public static void main(String[] args) throws Exception {
		
		System.out.println("--------------公钥加密私钥解密过程-------------------");
		String plainText="ihep_公钥加密私钥解密";
		//公钥加密过程
//		byte[] cipherData=RSAEncrypt.encrypt(RSAEncrypt.loadPublicKeyByStr(RSAEncrypt.loadPublicKeyByFile(filepath)), plainText.getBytes());
		String pubKey = "MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEA3SBa9KmzRVhdysc6gzSouxaH+mGl5xhIVu8APu+O3bkY4wlinlc6O4ZDGHS0kJHY1/Kn9D1xjzpnk7pjLORPvpgZmcuYF5BJdQLtrAxILwbpy42dnRoPs7QRSiG2sKcjsnKoRSszRIr70lFOF05R9Utumay5HFOWFiQaqhHtwp3SfvT250bRo8NKB5JtCbsKQDFsWNPcV7cyq/CKXibGjeelxTdWR7XBIeBhjMTWYO8XBhzlJA8MdGvDw+Eb+TiF/74YqhoDAriUKh36iqObPKFkgZ4uOcfvoe15NxJi6+JFahtR3FwvxukYWBlTgPghOaYaI7YX3VTAvBoRzUM92wIDAQAB";
		byte[] cipherData=RSAEncrypt.encrypt(RSAEncrypt.loadPublicKeyByStr(pubKey), plainText.getBytes());
		
		String cipher=Base64.encodeBase64String(cipherData);
		//私钥解密过程
//		byte[] res=RSAEncrypt.decrypt(RSAEncrypt.loadPrivateKeyByStr(RSAEncrypt.loadPrivateKeyByFile(filepath)), Base64.decodeBase64(cipher));
		
		String priKey = "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";
		byte[] res=RSAEncrypt.decrypt(RSAEncrypt.loadPrivateKeyByStr(priKey), Base64.decodeBase64(cipher));
		String restr=new String(res);
		System.out.println("原文："+plainText);
		System.out.println("加密："+cipher);
		System.out.println("解密："+restr);
		System.out.println();
	}
}

　　运行结果如下所示：

--------------公钥加密私钥解密过程-------------------
原文：ihep_公钥加密私钥解密
加密：R7HZzg6aOwuGEITA4P8s7HE/RZq/W1tik4CT/5Nf+GqwuJJC7n2CJxgL72TNwXrTDr0Jku9AyRZ2GoD5mwn7DLhAANVv0O0SMAGGRX+3rg4owv3AdyjjZhV1GjQdeClHrLq/MdTbCsvBCNo4vf6sjwEpuSlqTHqr+ioP+mIqz/r3dQwT86tu4mDJ61h5M51c74M25Q648Eh2O8AzvHgVn5SHaQgjVUZqZJl5zG4WdiPwuTKZEkEnp+4ie/uW1uyv/4IkfmF9B2rEP5KJOdbIXEw5lxZeGs1nGZeUqdh5Is6wVWUHnNDOwpRk6BDqcjxH7cye3PhqpgtyO7BwLm7RIg==
解密：ihep_公钥加密私钥解密

　　我从网上找到JS-RSA的代码地址：https://github.com/openstack/xstatic-jsencrypt/blob/master/xstatic/pkg/jsencrypt/data/jsencrypt.js，使用方法如下：

首先引入jsencrypt.js，然后获取RSA的公钥和私钥。
var encrypt=new JSEncrypt();
encrypt.setPublicKey(RSA的公钥);
encrypt.encrypt(加密的内容);
这样加密就成功了,然后解密也很简单。
encrypt.setPrivateKey(RSA的私钥);
encrypt.decrypt(解密的内容);

　　将jsencrypt.js拷贝下来，然后F12在浏览器中运行如下：

　　当然，我想进一步验证JS-RSA用公钥加密得到加密串，用java来解密，看是否OK，于是把上面JS-RSA生成密文拷贝到java代码中，如下所示：

package com.bijian.study;

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

public class MainTest {
 
	public static void main(String[] args) throws Exception {
		String cipher = "sx2Rwuokxwm6UnnsEjMBUCAee5Lc7lg8K9XU1EYzXmEuBvhyyNxxBwsl25dFridOeYhxuVuMbxIqK1xhroyzb0d+tdFrAalQ6DK+OMaUIHjKfP1v3JIVJyTVE8BdLoTd+982PwPbe0TeKfCq5HYSjqb+5AWv5dYyVyFha4v373+HmWQxG+nTFN2lnlnPBbG0cWO+ykdmtfKRtAyhxJ5uYnWYhFzbbDfExmTMi4rwkJOWH5YmuxRRb6v1o6x32+Fr+WgtCXq6Nkq58epSzz80GPGn4BfOd4mj9wxs62GWj8O6sHm+yBgfNOB+rPE82PGcNKkL7eHoXpHGlY51KTKE2A==";
		
		String priKey = "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";
		byte[] res=RSAEncrypt.decrypt(RSAEncrypt.loadPrivateKeyByStr(priKey), Base64.decodeBase64(cipher));
		String restr=new String(res);
		System.out.println("解密："+restr);
		System.out.println();
	}
}

　　运行结果如下所示：

　　这说明JS-RSA用公钥加密得到加密串，用java来解密，完全是OK的。

 

参考文章：https://www.cnblogs.com/zaxxm/p/5144267.html