Encriptação com Bouncy Castle

Mobile
#1

Olá, caros. Alguém teria uma implementação/exemplo de encriptação utilizando a API Bouncy Castle? Pretendo utilizar o método DES

#2

Caros, encontrei esse exemplo, mas gostaria de saber onde eu insiro a chave para criptografar…

[code]
import javax.crypto.Cipher;
import javax.crypto.KeyGenerator;
import javax.crypto.NoSuchPaddingException;
import javax.crypto.IllegalBlockSizeException;
import javax.crypto.BadPaddingException;
import java.security.Key;
import java.security.Security;
import java.security.NoSuchAlgorithmException;
import java.security.InvalidKeyException;

public class DESCryptoTest {

public static void main(String[] args) {
    Security.addProvider(new com.sun.crypto.provider.SunJCE());
    try {
        KeyGenerator kg = KeyGenerator.getInstance("DES");
        Key key = kg.generateKey();
        Cipher cipher = Cipher.getInstance("DES");
        byte[] data = "Hello World!".getBytes();
        System.out.println("Original data : " + new String(data));
        cipher.init(Cipher.ENCRYPT_MODE, key);
        byte[] result = cipher.doFinal(data);
        System.out.println("Encrypted data: " + new String(result));
        cipher.init(Cipher.DECRYPT_MODE, key);
        byte[] original = cipher.doFinal(result);
        System.out.println("Decrypted data: " + new String(original));
    } catch (NoSuchAlgorithmException e) {
        e.printStackTrace();
    } catch (NoSuchPaddingException e) {
        e.printStackTrace();
    } catch (InvalidKeyException e) {
        e.printStackTrace();
    } catch (IllegalStateException e) {
        e.printStackTrace();
    } catch (IllegalBlockSizeException e) {
        e.printStackTrace();
    } catch (BadPaddingException e) {
        e.printStackTrace();
    }
}

}[/code]

#3