package com.lib.auth;

import javax.crypto.Cipher;

import javax.crypto.spec.IvParameterSpec;

import javax.crypto.spec.SecretKeySpec;

import android.util.Base64;

public class Cryption {

public static String Encrypt(String text)

throws Exception {

return Encrypt(text, GetKey());

}

public static String Encrypt(String text, String key)

throws Exception {

byte[] keyBytes= new byte[16];

byte[] b= key.getBytes("UTF-8");

int len= b.length;

if (len > keyBytes.length) len = keyBytes.length;

System.arraycopy(b, 0, keyBytes, 0, len);

SecretKeySpec keySpec = new SecretKeySpec(keyBytes, "AES");

IvParameterSpec ivSpec = new IvParameterSpec(keyBytes);

Cipher cipher = Cipher.getInstance("AES/CBC/PKCS5Padding");

cipher.init(Cipher.ENCRYPT_MODE,keySpec,ivSpec);

byte[] results = cipher.doFinal(text.getBytes("UTF-8"));

String result = Base64.encodeToString(results, Base64.DEFAULT);

return result;

}

public static String GetKey()

{

String key = "LKINKDESF8_UqjpyNh?5ZJWjKDaSTp59413700K0Kf@0cQUv34E3FXP5lkRmA7KLYJPh>8;D53N8fdhhoiRu80CA<F<3EE<F;2=E56:48A:0CDC";

return key;

}

public static String Decrypt(String text)

throws Exception {

return Decrypt(text, GetKey());

}

public static String Decrypt(String text, String key)

throws Exception {

byte[] keyBytes= new byte[16];

byte[] b= key.getBytes("UTF-8");

int len= b.length;

if (len > keyBytes.length) len = keyBytes.length;

System.arraycopy(b, 0, keyBytes, 0, len);

SecretKeySpec keySpec = new SecretKeySpec(keyBytes, "AES");

IvParameterSpec ivSpec = new IvParameterSpec(keyBytes);

Cipher cipher = Cipher.getInstance("AES/CBC/PKCS5Padding");

cipher.init(Cipher.DECRYPT_MODE,keySpec,ivSpec);

byte[] textBytes = Base64.decode(text, Base64.DEFAULT);

byte[] results = cipher.doFinal(textBytes);

String result = new String(results);

return result;

}

}