package cl.bancoconsorcio.apis.helper;

import javax.crypto.Cipher;
import javax.crypto.spec.SecretKeySpec;

import org.apache.log4j.Logger;

/**
 * Aes
 *
 * @author Camilo Contreras
 *
 */
public class UtilesAes {

	/**
	 * LOGGER
	 */
	private static final Logger log = Logger.getLogger(UtilesAes.class);

	/**
	 * Encriptar
	 *
	 * @param input
	 * @param key
	 * @return
	 */
	public static String encrypt(String input, String key) {

		byte[] crypted = null;
		try {

			SecretKeySpec skey = new SecretKeySpec(key.getBytes(), "AES");

			Cipher cipher = Cipher.getInstance("AES/ECB/PKCS5Padding");
			cipher.init(Cipher.ENCRYPT_MODE, skey);
			crypted = cipher.doFinal(input.getBytes());
		} catch (Exception e) {
			log.error("Error al encriptar, Detalle > ", e);
		}

		java.util.Base64.Encoder encoder = java.util.Base64.getEncoder();
		return new String(encoder.encodeToString(crypted));

	}

	/**
	 * Desencriptar
	 *
	 * @param input
	 * @param key
	 * @return
	 */
	public static String decrypt(String input, String key) {

		byte[] output = null;
		try {
			java.util.Base64.Decoder decoder = java.util.Base64.getDecoder();
			SecretKeySpec skey = new SecretKeySpec(key.getBytes(), "AES");
			Cipher cipher = Cipher.getInstance("AES/ECB/PKCS5Padding");
			cipher.init(Cipher.DECRYPT_MODE, skey);
			output = cipher.doFinal(decoder.decode(input));
			return new String(output);
		} catch (Exception e) {
			log.error("Error al desencriptar, Detalle > ", e);
		}

		return null;
	}

}