blob: ad2a58d8dc32ce2316f3087d6a0447e860c2c08b (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
|
package com.example.fp;
import java.math.BigInteger;
import java.security.MessageDigest;
import java.security.NoSuchAlgorithmException;
import java.util.List;
import com.example.fp.dao.UserDAO;
public class UserManagerImpl implements UserManager {
private UserDAO userDAO;
public void setUserDAO(UserDAO userDAO) {
this.userDAO = userDAO;
}
@Override
public void create(User user) {
user.setPassword(calculatePasswordHash(user.getPassword()));
userDAO.create(user);
}
@Override
public User find(int uid) {
return userDAO.find(uid);
}
@Override
public List<User> findAll() {
return userDAO.findAll();
}
@Override
public void delete(int uid) {
userDAO.delete(uid);
}
@Override
public void update(User user) {
userDAO.update(user);
}
@Override
public void setPassword(int uid, String plainTextPassword) {
User user = userDAO.find(uid);
user.setPassword(calculatePasswordHash(plainTextPassword));
userDAO.update(user);
}
public static String calculatePasswordHash(String plainText) {
try {
// Static getInstance method is called with hashing MD5
MessageDigest md = MessageDigest.getInstance("MD5");
// digest() method is called to calculate message digest
// of an input digest() return array of byte
byte[] messageDigest = md.digest(plainText.getBytes());
// Convert byte array into signum representation
BigInteger no = new BigInteger(1, messageDigest);
// Convert message digest into hex value
String hashtext = no.toString(16);
while (hashtext.length() < 32) {
hashtext = "0" + hashtext;
}
return hashtext;
} catch (NoSuchAlgorithmException e) {
// For specifying wrong message digest algorithms
throw new RuntimeException(e);
}
}
}
|
