aes工具类如下:
package com.*; import java.net.URLEncoder; import sun.misc.BASE64Decoder; import sun.misc.BASE64Encoder; import javax.crypto.Cipher; import javax.crypto.spec.IvParameterSpec; import javax.crypto.spec.SecretKeySpec; public class AesUtil { private static BASE64Encoder base64Encoder; private static BASE64Decoder base64Decoder; private static IvParameterSpec iv; private static String CipherType = "AES/CBC/PKCS5Padding"; //"算法/模式/补码方式 static { base64Decoder = new BASE64Decoder(); base64Encoder = new BASE64Encoder(); iv = new IvParameterSpec("0102030405060708".getBytes());//使用CBC模式,需要一个向量iv,可增加加密算法的强度 } // 加密 public static String Encrypt(String sSrc,String sKey) throws Exception { if (sKey == null) { System.out.print("Key为空null"); return null; } // 判断Key是否为16位 if (sKey.length() != 16) { System.out.print("Key长度不是16位"); return null; } byte[] raw = sKey.getBytes("UTF-8"); SecretKeySpec skeySpec = new SecretKeySpec(raw, "AES"); Cipher cipher = Cipher.getInstance(CipherType); cipher.init(Cipher.ENCRYPT_MODE, skeySpec, iv); byte[] encrypted = cipher.doFinal(sSrc.getBytes("UTF-8")); return base64Encoder.encode(encrypted);//此处使用BASE64做转码功能,同时能起到2次加密的作用。 } // 解密 public static String Decrypt(String sSrc,String sKey) throws Exception { /*sSrc = new String(sSrc.getBytes(),"UTF-8");*/ try { // 判断Key是否正确 if (sKey == null) { System.out.print("Key为空null"); return null; } // 判断Key是否为16位 if (sKey.length() != 16) { System.out.print("Key长度不是16位"); return null; } byte[] raw = sKey.getBytes("UTF-8"); SecretKeySpec skeySpec = new SecretKeySpec(raw, "AES"); Cipher cipher = Cipher.getInstance(CipherType); cipher.init(Cipher.DECRYPT_MODE, skeySpec, iv); byte[] encrypted1 = base64Decoder.decodeBuffer(sSrc);//先用base64解密 try { byte[] original = cipher.doFinal(encrypted1); return new String(original,"UTF-8"); } catch (Exception e) { System.out.println(e.toString()); return null; } } catch (Exception ex) { System.out.println(ex.toString()); return null; } } public static void main(String[] args) throws Exception { System.out.println(Encrypt("hello,word","11asd11111111111")); System.out.println(Decrypt(String.valueOf("qmesIijZCkQ8YL6GN1YEiQ=="),"11asd11111111111")); } }