Source Codes > Network Security Algorithms > DES Using packages
import java.security.*;
import java.util.logging.*;
import javax.crypto.*;
import java.util.Scanner;
public class NewDES {
public static void main(String[] args) {
try {
KeyGenerator k=KeyGenerator.getInstance("DES");
SecretKey sk=k.generateKey();
Cipher c=Cipher.getInstance("DES");
System.out.print("Enter message: ");
Scanner sc=new Scanner(System.in);
String s=sc.nextLine();
byte [] m=s.getBytes();
c.init(Cipher.ENCRYPT_MODE,sk);
byte [] em=c.doFinal(m);
c.init(Cipher.DECRYPT_MODE, sk);
byte [] dm=c.doFinal(em);
System.out.println("Plain Text: "+ new String(m));
System.out.println("Enc Text: "+ new String(em));
System.out.println("D Text: "+ new String(dm));
} catch (Exception ex) {
}
}
}
import java.util.logging.*;
import javax.crypto.*;
import java.util.Scanner;
public class NewDES {
public static void main(String[] args) {
try {
KeyGenerator k=KeyGenerator.getInstance("DES");
SecretKey sk=k.generateKey();
Cipher c=Cipher.getInstance("DES");
System.out.print("Enter message: ");
Scanner sc=new Scanner(System.in);
String s=sc.nextLine();
byte [] m=s.getBytes();
c.init(Cipher.ENCRYPT_MODE,sk);
byte [] em=c.doFinal(m);
c.init(Cipher.DECRYPT_MODE, sk);
byte [] dm=c.doFinal(em);
System.out.println("Plain Text: "+ new String(m));
System.out.println("Enc Text: "+ new String(em));
System.out.println("D Text: "+ new String(dm));
} catch (Exception ex) {
}
}
}