znzKCJdL

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