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I am trying to encrypt bytes and then add a second encryption then remove the first without removing the second.... I have my reasons for this I need help with this not an alternative....
the encryption can be alternative so DES + DES or AES + DES or AES + AES or anything thing else but it has to be like this ... here is my code so far .... I have got the encryption layers on ... its just getting them off im struggling with (one page test code)....im getting (given final block is not correctly padded)
import java.security.InvalidKeyException;
import java.security.NoSuchAlgorithmException;
import javax.crypto.BadPaddingException;
import javax.crypto.Cipher;
import javax.crypto.IllegalBlockSizeException;
import javax.crypto.KeyGenerator;
import javax.crypto.NoSuchPaddingException;
import javax.crypto.SecretKey;
public class ObjectCrypter {
public static void main(String[] argv) {
try {
String str = "moo";
byte[] byted = str.getBytes();
Cipher desCipher;
Cipher enCipher;
KeyGenerator keygenerator = KeyGenerator.getInstance("DES");
SecretKey myDesKey = keygenerator.generateKey();
desCipher = Cipher.getInstance("DES/ECB/PKCS5Padding");
desCipher.init(Cipher.ENCRYPT_MODE, myDesKey);
byte[] textEd = desCipher.doFinal(byted);
System.out.println("DES?" + new String(textEd));
byte[] byt = textEd;
KeyGenerator keygenerat = KeyGenerator.getInstance("AES");
SecretKey myD = keygenerat.generateKey();
enCipher = Cipher.getInstance("AES/ECB/PKCS5Padding");
enCipher.init(Cipher.ENCRYPT_MODE, myD);
byte[] tex = enCipher.doFinal(byt);
System.out.println("AES?" + new String(tex));
desCipher.init(Cipher.DECRYPT_MODE, myDesKey);
byte[] textDecrypted = desCipher.doFinal(tex);
System.out.println("it work?" + new String(textDecrypted));
}catch(NoSuchAlgorithmException e){
e.printStackTrace();
}catch(NoSuchPaddingException e){
e.printStackTrace();
}catch(InvalidKeyException e){
e.printStackTrace();
}catch(IllegalBlockSizeException e){
e.printStackTrace();
}catch(BadPaddingException e){
e.printStackTrace();
}
}
}
if you can help it would be great
get it?
