本文实例为大家分享了java实现aes可逆加密算法的具体代码,供大家参考,具体内容如下
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package com.hdu.encode; import javax.crypto.cipher; import javax.crypto.spec.ivparameterspec; import javax.crypto.spec.secretkeyspec; import sun.misc.base64decoder; import sun.misc.base64encoder; /** * aes 是一种可逆加密算法,对用户的敏感信息加密处理 对原始数据进行aes加密后,在进行base64编码转化; */ public class aesoperator { /* * 加密用的key 可以用26个字母和数字组成 此处使用aes-128-cbc加密模式,key需要为16位。 */ // a0b891c2d563e4f7 private string skey = "abcdef0123456789" ; private string ivparameter = "0123456789abcdef" ; private static aesoperator instance = null ; private aesoperator() { } public static aesoperator getinstance() { if (instance == null ) instance = new aesoperator(); return instance; } // 加密 public string encrypt(string ssrc){ string result = "" ; try { cipher cipher; cipher = cipher.getinstance( "aes/cbc/pkcs5padding" ); byte [] raw = skey.getbytes(); secretkeyspec skeyspec = new secretkeyspec(raw, "aes" ); ivparameterspec iv = new ivparameterspec(ivparameter.getbytes()); // 使用cbc模式,需要一个向量iv,可增加加密算法的强度 cipher.init(cipher.encrypt_mode, skeyspec, iv); byte [] encrypted = cipher.dofinal(ssrc.getbytes( "utf-8" )); result = new base64encoder().encode(encrypted); } catch (exception e) { e.printstacktrace(); } // 此处使用base64做转码。 return result; } // 解密 public string decrypt(string ssrc){ try { byte [] raw = skey.getbytes( "ascii" ); secretkeyspec skeyspec = new secretkeyspec(raw, "aes" ); cipher cipher = cipher.getinstance( "aes/cbc/pkcs5padding" ); ivparameterspec iv = new ivparameterspec(ivparameter.getbytes()); cipher.init(cipher.decrypt_mode, skeyspec, iv); byte [] encrypted1 = new base64decoder().decodebuffer(ssrc); // 先用base64解密 byte [] original = cipher.dofinal(encrypted1); string originalstring = new string(original, "utf-8" ); return originalstring; } catch (exception ex) { ex.printstacktrace(); return null ; } } public static void main(string[] args){ // 需要加密的字串 string csrc = "测试" ; system.out.println(csrc + " 长度为" + csrc.length()); // 加密 long lstart = system.currenttimemillis(); string enstring = aesoperator.getinstance().encrypt(csrc); system.out.println( "加密后的字串是:" + enstring + "长度为" + enstring.length()); long lusetime = system.currenttimemillis() - lstart; system.out.println( "加密耗时:" + lusetime + "毫秒" ); // 解密 lstart = system.currenttimemillis(); string destring = aesoperator.getinstance().decrypt(enstring); system.out.println( "解密后的字串是:" + destring); lusetime = system.currenttimemillis() - lstart; system.out.println( "解密耗时:" + lusetime + "毫秒" ); } } |
以上就是本文的全部内容,希望对大家的学习有所帮助,也希望大家多多支持服务器之家。
原文链接:https://blog.csdn.net/u011768325/article/details/40391045