using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Security.Cryptography;
using WMS.Util;

namespace WMS.BZServices
{
    public class SysSecurityHelp
    {
        const string AES256IV = "C686096CDBB34A77";
        const string AES256Key = "C628CE01C4F84037BEA124C90B3EE1FC";
        public static string Aes256Encrypt(string EncryptText)
        {
            try
            {
                return SecurityUtil.AesEncrypt(EncryptText, AES256Key, AES256IV);
            }
            catch (Exception ex)
            {
                throw ex;
            }
        }
        public static string Aes256Decrypt(string DecryptText)
        {
            try
            {
                return SecurityUtil.AesDecrypt(DecryptText, AES256Key, AES256IV);
            }
            catch (Exception ex)
            {
                throw ex;
            }
        }

        public static string Aes256Encrypt(string EncryptText, string AES256Key)
        {
            try
            {
                return SecurityUtil.AesEncrypt(EncryptText, AES256Key, AES256IV);
            }
            catch (Exception ex)
            {
                throw ex;
            }
        }
        public static string Aes256Decrypt(string DecryptText, string AES256Key)
        {
            try
            {
                return SecurityUtil.AesDecrypt(DecryptText, AES256Key, AES256IV);
            }
            catch (Exception ex)
            {
                throw ex;
            }
        }


        #region "MD5加密"
        /// <summary>
        /// MD5加密
        /// </summary>
        /// <param name="str">加密字符</param>
        /// <param name="code">加密位数16/32</param>
        /// <returns></returns>
        public static string Encrypt(string str, int code)
        {
            string strEncrypt = string.Empty;
            if (code == 16)
            {
                strEncrypt = Hash(str).Substring(8, 16);
            }

            if (code == 32)
            {
                strEncrypt = Hash(str);
            }
            return strEncrypt;
        }
        /// <summary>
        /// 32位MD5加密（小写）
        /// </summary>
        /// <param name="input">输入字段</param>
        /// <returns></returns>
        public static string Hash(string input)
        {
            var md5Hasher = MD5.Create();
            byte[] data = md5Hasher.ComputeHash(Encoding.Default.GetBytes(input));
            StringBuilder sBuilder = new StringBuilder();
            for (int i = 0; i < data.Length; i++)
            {
                sBuilder.Append(data[i].ToString("x2"));
            }
            return sBuilder.ToString();
        }
        #endregion
    }
}