AhnhAPHi

1import java.io.File;
2import java.io.IOException;
3import java.io.UnsupportedEncodingException;
4import java.nio.file.Files;
5import java.security.InvalidKeyException;
6import java.security.NoSuchAlgorithmException;
7import java.security.spec.InvalidKeySpecException;
8import javax.crypto.BadPaddingException;
9import javax.crypto.Cipher;
10import javax.crypto.IllegalBlockSizeException;
11import javax.crypto.NoSuchPaddingException;
12import javax.crypto.SecretKey;
13import javax.crypto.SecretKeyFactory;
14import javax.crypto.spec.DESKeySpec;
15
16public class DesImplementer {
17
18public static void main(String[] args) throws NoSuchAlgorithmException,UnsupportedEncodingException, InvalidKeyException,
19        InvalidKeySpecException, NoSuchPaddingException, IllegalBlockSizeException, BadPaddingException, IOException {
20
21        String str;
22        SecretKeyFactory myKeyFactory = SecretKeyFactory.getInstance("DES");
23
24        byte[] myPassword = "password".getBytes("UTF8");
25        DESKeySpec mySecureKey = new DESKeySpec(myPassword);
26        SecretKey myDesKey = myKeyFactory.generateSecret(mySecureKey);
27        Cipher myDesCipher = Cipher.getInstance("DES");
28        myDesCipher.init(Cipher.ENCRYPT_MODE, myDesKey);
29        byte[] myPlainText = Files.readAllBytes(new File("C:\FileTesting\PreEncrypt.txt").toPath());      
30        byte[] myCipherText = myDesCipher.doFinal(myPlainText);
31
32        Files.write(new File("C:\FileTesting\Encrypted.txt").toPath(), myCipherText);
33    }
34
35}
36	
37package filetobits;
38
39import java.io.FileNotFoundException;
40import java.io.FileReader; 
41import java.io.FileWriter;
42import java.io.IOException;
43
44public class FileToBits {
45
46    public static void main(String[] args) throws IOException, FileNotFoundException {
47
48            FileReader inputStream = new  FileReader("C:\FileTesting\Encrypted.txt");
49            FileWriter outputStream = new  FileWriter("C:\FileTesting\EncryptedBin.txt");
50
51            int c;
52            while ((c = inputStream.read()) != -1) {
53            outputStream.write(Integer.toBinaryString(c));
54            outputStream.write(System.lineSeparator());            
55        }
56        inputStream.close();
57        outputStream.close();``
58    }
59}