Cryptography/Cryptography.java at main · KAMYAVERMA/Cryptography · 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
import java.io.*;
import java.util.*;

class Cryptography{


  static boolean encrypt(String src, String trgt){
    try{
      KeyGenerator kgen = new KeyGenerator(1234);
      ArmstrongCryptograph ac = new ArmstrongCryptograph(kgen.getKey());
      ColorCryptograph  cc = new ColorCryptograph(kgen.getKey());


      FileInputStream fin = new FileInputStream(src);
      FileOutputStream fout = new FileOutputStream(trgt);

      int x, y, z;
      while((x = fin.read()) != -1){

        y = ac.encrypt(x);
        z = cc.encrypt(y);
        fout.write(z);

      }//while
      System.out.println("C");
      fin.close();
      fout.close();
      System.out.println("D");
      return true;
    }catch(Exception ex){
      System.out.println("Error in encrypt: " + ex.getMessage());
      //ex.printStackTrace();
      return false;
    }

  }//encrypt

  static boolean decrypt(String src, String trgt){
    try{

      KeyGenerator kgen = new KeyGenerator(1234);
      ArmstrongCryptograph ac = new ArmstrongCryptograph(kgen.getKey());
      ColorCryptograph  cc = new ColorCryptograph(kgen.getKey());

      FileInputStream fin = new FileInputStream(src);
      FileOutputStream fout = new FileOutputStream(trgt);

      int x, y,z;
      while((z = fin.read()) != -1){
        y = cc.decrypt(z);
        x = ac.decrypt(y);
        fout.write(x);

      }//while

      fin.close();
      fout.close();
      return true;

    }catch(Exception ex){
      System.out.println("Error in decrypt: " + ex.getMessage());
      return false;
    }

  }//decrypt


  public static void main(String args[]){
    try{

      String srcFile, trgtFile;
      Scanner scn = new Scanner(System.in);
      int ch;

      while(true){

        System.out.println("1. Encrypt ");
        System.out.println("2. Decrypt ");
        System.out.println("3. Exit");

        ch = scn.nextInt();

        if(ch == 1){

          System.out.println("Enter the absolute path of file to encrypt");
          srcFile = scn.next();
          System.out.println("Enter the absolute path of target file");
          //scn.next();
          trgtFile = scn.next();


          if(encrypt(srcFile, trgtFile))
             System.out.println("Encryption Successfull");
          else
             System.out.println("Encryption Failed");

        }else if(ch == 2){

          System.out.println("Enter the absolute path of file to decrypt");
          srcFile = scn.next();
          System.out.println("Enter the absolute path of target file");
          trgtFile = scn.next();

          if(decrypt(srcFile, trgtFile))
             System.out.println("Decryption Successfull");
          else
             System.out.println("Decryption Failed");


        }else if(ch == 3){

          break;

        }else{

          System.out.println("Wrong Choice");

        }

      }//while

    }catch(Exception ex){
      System.out.println("Error in decrypt: " + ex.getMessage());
    }

  }//main
}