eclipse JAVA实现AES的加密和解密算法

 1 import javax.crypto.Cipher;
 2 import javax.crypto.spec.IvParameterSpec;
 3 import javax.crypto.spec.SecretKeySpec;
 4 
 5 import sun.misc.BASE64Decoder;
 6 import sun.misc.BASE64Encoder;
 7 
 8 /**AES 是一种可逆加密算法,对用户的敏感信息加密处理
 9 * 对原始数据进行AES加密后,在进行Base64编码转化;
10 */
11 public class AESOperator {
12 /*
13 * 加密用的Key 可以用26个字母和数字组成
14 * 此处使用AES-128-CBC加密模式,key需要为16位。
15 */
16 private String sKey=”0123456789abcdef”;
17 private String ivParameter=”0123456789abcdef”;
18 private static AESOperator instance=null;
19 private AESOperator(){
20 
21 }
22 public static AESOperator getInstance(){
23 if (instance==null)
24 instance= new AESOperator();
25 return instance;
26 }
27 // 加密
28 public String encrypt(String sSrc) throws Exception {
29 Cipher cipher = Cipher.getInstance(“AES/CBC/PKCS5Padding”);
30 byte[] raw = sKey.getBytes();
31 SecretKeySpec skeySpec = new SecretKeySpec(raw, “AES”);
32 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
33 cipher.init(Cipher.ENCRYPT_MODE, skeySpec, iv);
34 byte[] encrypted = cipher.doFinal(sSrc.getBytes(“utf-8″));
35 return new BASE64Encoder().encode(encrypted);//此处使用BASE64做转码。
36 }
37 
38 // 解密
39 public String decrypt(String sSrc) throws Exception {
40 try {
41 byte[] raw = sKey.getBytes(“ASCII”);
42 SecretKeySpec skeySpec = new SecretKeySpec(raw, “AES”);
43 Cipher cipher = Cipher.getInstance(“AES/CBC/PKCS5Padding”);
44 IvParameterSpec iv = new IvParameterSpec(ivParameter.getBytes());
45 cipher.init(Cipher.DECRYPT_MODE, skeySpec, iv);
46 byte[] encrypted1 = new BASE64Decoder().decodeBuffer(sSrc);//先用base64解密
47 byte[] original = cipher.doFinal(encrypted1);
48 String originalString = new String(original,”utf-8″);
49 return originalString;
50 } catch (Exception ex) {
51 return null;
52 }
53 }
54 
55 public static void main(String[] args) throws Exception {
56 // 需要加密的字串
57 String cSrc = “我来自www.wenhq.com”;
58 System.out.println(cSrc);
59 // 加密
60 long lStart = System.currentTimeMillis();
61 String enString = AESOperator.getInstance().encrypt(cSrc);
62 System.out.println(“加密后的字串是:” + enString);
63 
64 long lUseTime = System.currentTimeMillis() – lStart;
65 System.out.println(“加密耗时:” + lUseTime + “毫秒”);
66 // 解密
67 lStart = System.currentTimeMillis();
68 String DeString = AESOperator.getInstance().decrypt(enString);
69 System.out.println(“解密后的字串是:” + DeString);
70 lUseTime = System.currentTimeMillis() – lStart;
71 System.out.println(“解密耗时:” + lUseTime + “毫秒”);
72 }
73 }
74 
75 No related posts.

经过验证,可行。

不过在使用过程中sun.misc.BASE64Encoder找不到jar包的解决方法

解决方案1(推荐): 
只需要在project build path中先移除JRE System Library,再添加库JRE System Library,重新编译后就一切正常了。 
解决方案2: 
Windows -> Preferences -> Java -> Compiler -> Errors/Warnings -> 
Deprecated and trstricted API -> Forbidden reference (access rules): -> change to warning

posted @ 2015-10-30 09:38  cctext  阅读(1759)  评论(0编辑  收藏  举报