DES with ECB mode example in Java
DESECB.java
import bsr.*;
import java.security.*;
import javax.crypto.*;
import javax.crypto.spec.*;
/*A code from www.bipinrupadiya.com*/
class DESECB
{
public KeyGenerator keygenerator;
public SecretKey myDesKey;
Cipher c;
public DESECB() throws Exception
{
// Genrate the Key
keygenerator = KeyGenerator.getInstance("DES");
myDesKey = keygenerator.generateKey();
// Create the cipher
c = Cipher.getInstance("DES/ECB/PKCS5Padding");
}
public byte[] doEncryption(String s) throws Exception
{
// Initialize the cipher for encryption
c.init(Cipher.ENCRYPT_MODE, myDesKey);
//sensitive information
byte[] text = s.getBytes();
// Encrypt the text
byte[] textEncrypted = c.doFinal(text);
return(textEncrypted);
}
public String doDecryption(byte[] s)throws Exception
{
// Initialize the same cipher for decryption
c.init(Cipher.DECRYPT_MODE, myDesKey);
// Decrypt the text
byte[] textDecrypted = c.doFinal(s);
return(new String(textDecrypted));
}
}
import java.security.*;
import javax.crypto.*;
import javax.crypto.spec.*;
/*A code from www.bipinrupadiya.com*/
class DESECB
{
public KeyGenerator keygenerator;
public SecretKey myDesKey;
Cipher c;
public DESECB() throws Exception
{
// Genrate the Key
keygenerator = KeyGenerator.getInstance("DES");
myDesKey = keygenerator.generateKey();
// Create the cipher
c = Cipher.getInstance("DES/ECB/PKCS5Padding");
}
public byte[] doEncryption(String s) throws Exception
{
// Initialize the cipher for encryption
c.init(Cipher.ENCRYPT_MODE, myDesKey);
//sensitive information
byte[] text = s.getBytes();
// Encrypt the text
byte[] textEncrypted = c.doFinal(text);
return(textEncrypted);
}
public String doDecryption(byte[] s)throws Exception
{
// Initialize the same cipher for decryption
c.init(Cipher.DECRYPT_MODE, myDesKey);
// Decrypt the text
byte[] textDecrypted = c.doFinal(s);
return(new String(textDecrypted));
}
}
DES.java
import bsr.*;
/*A code from www.bipinrupadiya.com*/
public class DES
{
public static void main(String[] argv) throws Exception
{
DESECB d=new DESECB();
byte[] str=d.doEncryption("BipinRupadiya");
System.out.println("Encrypted String : "+str);
System.out.println("Encrypted String : "+d.doDecryption(str));
}
}
/*A code from www.bipinrupadiya.com*/
public class DES
{
public static void main(String[] argv) throws Exception
{
DESECB d=new DESECB();
byte[] str=d.doEncryption("BipinRupadiya");
System.out.println("Encrypted String : "+str);
System.out.println("Encrypted String : "+d.doDecryption(str));
}
}
To execute this code
- open two command prompt
- compile bsr package
- compile DES.java
- execute DES.java
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3 comments:
Greetings. Where can I get the bsr package?
Greetings, where can I get the bsr package?
sir,where can i get the bsr package ?
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