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

Encriptação com Bouncy Castle

1 Resposta

ddso 11 de jan. de 2010

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

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();
        }
    }
}

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