happy Mom ——php mysqli DES加密

Posted 2020-10-05 ZzUuOo666

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　　未来女：喜欢电影，喜欢读书，有个小梦想是做个导演，导一部自己喜欢的片子。吃素多一点，好吃的肉也挺能吃，最喜欢的菜是糖醋排骨，可乐鸡翅喜欢甜食。不喜欢吃外卖，喜欢家的感觉。喜欢波特曼和让雷诺。

　　难道她是上天派来的？OMG

　　看完《爱你就像爱生命》这本书，真的看出小波哥很有才，跟小波哥比起来，我唯一拿的出手的可能就是我比他的颜值了。想起一句话，人不是因为美丽而可爱,而是因为可爱而美丽。所以我对我的要求是，继续修炼吧。

　　今天被php的mysqli数据库连接和查询，弄的头好头疼。有个查询$conn->query($sql);返回总是false。额，我命名用过这种查询一模一样，那个就好使。看来又被针对了。等解决了放上来。

　　分享这个java可加密可解密的程序，亲自用过，不能用默认的jdk，否则有报错。

 1 import java.io.IOException;  
 2 import java.security.SecureRandom;  
 3 import javax.crypto.Cipher;  
 4 import javax.crypto.SecretKey;  
 5 import javax.crypto.SecretKeyFactory;  
 6 import javax.crypto.spec.DESKeySpec;  
 7 import sun.misc.BASE64Decoder;  
 8 import sun.misc.BASE64Encoder;  
 9 public class Des {  
10   
11     private byte[] desKey;  
12   
13     public Des(String desKey) {  
14         this.desKey = desKey.getBytes();  
15     }  
16   
17     public byte[] desEncrypt(byte[] plainText) throws Exception {  
18         SecureRandom sr = new SecureRandom();  
19         byte rawKeyData[] = desKey;  
20         DESKeySpec dks = new DESKeySpec(rawKeyData);  
21         SecretKeyFactory keyFactory = SecretKeyFactory.getInstance("DES");  
22         SecretKey key = keyFactory.generateSecret(dks);  
23         Cipher cipher = Cipher.getInstance("DES");  
24         cipher.init(Cipher.ENCRYPT_MODE, key, sr);  
25         byte data[] = plainText;  
26         byte encryptedData[] = cipher.doFinal(data);  
27         return encryptedData;  
28     }  
29   
30     public byte[] desDecrypt(byte[] encryptText) throws Exception {  
31         SecureRandom sr = new SecureRandom();  
32         byte rawKeyData[] = desKey;  
33         DESKeySpec dks = new DESKeySpec(rawKeyData);  
34         SecretKeyFactory keyFactory = SecretKeyFactory.getInstance("DES");  
35         SecretKey key = keyFactory.generateSecret(dks);  
36         Cipher cipher = Cipher.getInstance("DES");  
37         cipher.init(Cipher.DECRYPT_MODE, key, sr);  
38         byte encryptedData[] = encryptText;  
39         byte decryptedData[] = cipher.doFinal(encryptedData);  
40         return decryptedData;  
41     }  
42   
43     public String encrypt(String input) throws Exception {  
44         return base64Encode(desEncrypt(input.getBytes()));  
45     }  
46   
47     public String decrypt(String input) throws Exception {  
48         byte[] result = base64Decode(input);  
49         return new String(desDecrypt(result));  
50     }  
51   
52     public static String base64Encode(byte[] s) {  
53         if (s == null)  
54             return null;  
55         BASE64Encoder b = new sun.misc.BASE64Encoder();  
56         return b.encode(s);  
57     }  
58   
59     public static byte[] base64Decode(String s) throws IOException {  
60         if (s == null)  
61             return null;  
62         BASE64Decoder decoder = new BASE64Decoder();  
63         byte[] b = decoder.decodeBuffer(s);  
64         return b;  
65     }  
66   
67     public static void main(String[] args) throws Exception {  
68         String key = "abcdefgh";  
69         String input = "a";  
70         Des crypt = new Des(key);  
71         System.out.println("Encode:" + crypt.encrypt(input));  
72         System.out.println("Decode:" + crypt.decrypt(crypt.encrypt(input)));  
73     }  
74 }