unity字符串Rijndael加密

static string key = "12348578902223367877723456789012";
/// 

/// 字符串加密
/// 
private static string Encrypt (string toE)
{
	byte[] keyArray = UTF8Encoding.UTF8.GetBytes (key);
	
	RijndaelManaged rDel = new RijndaelManaged ();
	rDel.Key = keyArray;
	rDel.Mode = CipherMode.ECB;
	rDel.Padding = PaddingMode.PKCS7;
	ICryptoTransform cTransform = rDel.CreateEncryptor ();
	
	byte[] toEncryptArray = UTF8Encoding.UTF8.GetBytes (toE);
	byte[] resultArray = cTransform.TransformFinalBlock (toEncryptArray, 0, toEncryptArray.Length);
	
	return Convert.ToBase64String (resultArray, 0, resultArray.Length);
}
/// 

/// 字符串解密
/// 
private static string Decrypt (string toD)
{
	byte[] keyArray = UTF8Encoding.UTF8.GetBytes (key);
	
	RijndaelManaged rDel = new RijndaelManaged ();
	rDel.Key = keyArray;
	rDel.Mode = CipherMode.ECB;
	rDel.Padding = PaddingMode.PKCS7;
	ICryptoTransform cTransform = rDel.CreateDecryptor ();
	
	byte[] toEncryptArray = Convert.FromBase64String (toD);
	byte[] resultArray = cTransform.TransformFinalBlock (toEncryptArray, 0, toEncryptArray.Length);
	
	return UTF8Encoding.UTF8.GetString (resultArray);
}