2KaTi0Gg

1// author @Alex Matheakis   
2public static void main(String[] args) throws Exception {
3
4    // file to be encrypted
5    Scanner inputScanner = new Scanner(System.in);  
6    System.out.println("Enter filename");
7    String filename = inputScanner.nextLine();
8
9    FileInputStream inputFile = new FileInputStream("C:\Documents\Encryptor\" + filename + ".txt");
10
11    // encrypted file
12    FileOutputStream outputFile = new FileOutputStream("C:\Documents\Encryptor\encryptedfile.des");
13
14    // password to encrypt the file
15    String passKey = "tkfhkggovubm";
16    byte[] salt = new byte[8];
17    Random r = new Random();    
18    r.nextBytes(salt);
19    PBEKeySpec pbeKeySpec = new PBEKeySpec(passKey.toCharArray());
20    SecretKeyFactory secretKeyFactory = SecretKeyFactory
21            .getInstance("PBEWithSHA1AndDESede");
22    SecretKey secretKey = secretKeyFactory.generateSecret(pbeKeySpec);
23
24
25    PBEParameterSpec pbeParameterSpec = new PBEParameterSpec(salt, 99999);
26    Cipher cipher = Cipher.getInstance("PBEWithSHA1AndDESede");
27    cipher.init(Cipher.ENCRYPT_MODE, secretKey, pbeParameterSpec);
28    outputFile.write(salt);
29
30    byte[] input = new byte[64];
31    int bytesRead;
32    while ((bytesRead = inputFile.read(input)) != -1) {
33        byte[] output = cipher.update(input, 0, bytesRead);
34        if (output != null)
35            outputFile.write(output);
36    }
37
38    byte[] output = cipher.doFinal();
39    if (output != null)
40        outputFile.write(output);
41
42    inputFile.close();
43    outputFile.flush();
44    outputFile.close();
45    inputScanner.close();
46    System.out.println("File has been Encrypted.");
47}