using System;
using System.Collections.Generic;
using System.Linq;
using System.Security.Cryptography;
using System.Text;

namespace SAL_OUTSTOCK.Utils
{
    internal static class AESHepler
    {
        /// <summary>
        /// AES 算法加密(ECB模式) 将明文加密，加密后进行base64编码，返回密文
        /// </summary>
        /// <param name="EncryptStr">明文</param>
        /// <param name="Key">密钥</param>
        /// <returns>加密后base64编码的密文</returns>
        public static string AesEncryptorBase64(string EncryptStr, string Key)
        {
            try
            {
                //byte[] keyArray = Encoding.UTF8.GetBytes(Key);
                byte[] toEncryptArray = Encoding.UTF8.GetBytes(EncryptStr);

                RijndaelManaged rDel = new RijndaelManaged();
                //rDel.Key = keyArray; 
                rDel.Key = Encoding.UTF8.GetBytes(Key);
                rDel.Mode = CipherMode.ECB;
                rDel.Padding = PaddingMode.PKCS7;

                ICryptoTransform cTransform = rDel.CreateEncryptor();
                byte[] resultArray = cTransform.TransformFinalBlock(toEncryptArray, 0, toEncryptArray.Length);

                return Convert.ToBase64String(resultArray, 0, resultArray.Length);
            }
            catch (Exception ex)
            {
                return ex.Message;
            }
        }
        
        /// <summary>
         /// 
         /// </summary>
         /// <param name="s"></param>
         /// <returns></returns>
        private static byte[] hexStringToByteArray(string strHex)
        {
            strHex = strHex.Replace(" ", "");
            byte[] buffer = new byte[strHex.Length / 2];
            for (int i = 0; i < strHex.Length; i += 2)
            {
                buffer[i / 2] = (byte)Convert.ToByte(strHex.Substring(i, 2), 16);
            }
            return buffer;
        }
    }
}