PasswordCracker/PasswordCracker.java at master · avacadoadam/PasswordCracker · GitHub

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
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
import java.io.UnsupportedEncodingException;
import java.util.ArrayList;

public class PasswordCracker {


    public void createDatabase(ArrayList<String> commonPasswords, DatabaseInterface db1) {


        //Creates database with all password variants
        for (int i = 0; i < commonPasswords.size(); i++) {
            String pass = commonPasswords.get(i);
            //Normal
            try {
                String hash = Sha1.hash(pass);
                db1.save(pass, hash);
            } catch (UnsupportedEncodingException e) {
                System.out.println("Couldn't hash String");
            }
            //Cap first letter
            try {
                String cap = CapFirstLetter(pass);
                db1.save(cap, Sha1.hash(cap));
            } catch (UnsupportedEncodingException e) {
                System.out.println("Couldn't hash String");
            }
            //Concat Year
            try {
                String year = ConcatYear(pass);
                db1.save(year, Sha1.hash(year));
            } catch (UnsupportedEncodingException e) {
                System.out.println("Couldn't hash String");
            }
            //Replace A
            try {
                String A = ReplaceA(pass);
                db1.save(A, Sha1.hash(A));
            } catch (UnsupportedEncodingException e) {
                e.printStackTrace();
                System.out.println("Couldn't hash String");
            }
            //Replace E
            try {
                String E = ReplaceE(pass);
                db1.save(E, Sha1.hash(E));
            } catch (UnsupportedEncodingException e) {
                e.printStackTrace();
                System.out.println("Couldn't hash String");
            }
            //Replace I
            try {
                String I = ReplaceI(pass);
                db1.save(I, Sha1.hash(I));
            } catch (UnsupportedEncodingException e) {
                e.printStackTrace();
                System.out.println("Couldn't hash String");
            }
            try {
                String I = ReplaceE(pass);
                I = ReplaceA(I);
                I = CapFirstLetter(I);
                I = ReplaceI(I);
                I = ConcatYear(I);
                db1.save(I, Sha1.hash(I));
            } catch (UnsupportedEncodingException e) {
                e.printStackTrace();
                System.out.println("Couldn't hash String");
            }
            try {
                String I = ReplaceE(pass);
                I = ReplaceA(I);
                I = ReplaceI(I);
                db1.save(I, Sha1.hash(I));
            } catch (UnsupportedEncodingException e) {
                e.printStackTrace();
                System.out.println("Couldn't hash String");
            }
            try {
                String I = pass;
                I = ReplaceE(I);
                I = ReplaceI(I);
                I = CapFirstLetter(I);
                db1.save(I, Sha1.hash(I));
            } catch (UnsupportedEncodingException e) {
                e.printStackTrace();
                System.out.println("Couldn't hash String");
            }
            try {
                String I = pass;
//                I = ReplaceE(I);
                I = ReplaceA(I);
//                I = ReplaceI(I);
                I = CapFirstLetter(I);
//                I = ConcatYear(I);
                db1.save(I, Sha1.hash(I));
            } catch (UnsupportedEncodingException e) {
                e.printStackTrace();
                System.out.println("Couldn't hash String");
            }

        }


    }


    //Class to augment onto Database
    private String CapFirstLetter(String pass) {
        return pass.substring(0, 1).toUpperCase() + pass.substring(1);
    }

    private String ConcatYear(String pass) {
        return pass.concat("2018");
    }

    private String ReplaceA(String pass) {
        return pass.replace('a', '@');
    }

    private String ReplaceE(String pass) {
        return pass.replace('e', '3');
    }

    private String ReplaceI(String pass) {
        return pass.replace('i', '1');
    }

    public String crackPassword(String cryptic, DatabaseInterface database) {
        return database.decrypt(cryptic);
    }
}