using COMMON;
using System;
using System.Collections.Generic;
using System.IO;
using System.Linq;
using System.Security.Cryptography;
using System.Text;
using System.Threading.Tasks;

namespace SERVER
{
    /// <summary>
    /// MD5校验
    /// </summary>
    public static class MD5Verify
    {
        public static string getMD5Hash(Stream oFileStream)
        {
            string strResult = "";
            string strHashData = "";
            byte[] arrbytHashValue;
            //System.IO.FileStream oFileStream = null;
            System.Security.Cryptography.MD5CryptoServiceProvider oMD5Hasher = new System.Security.Cryptography.MD5CryptoServiceProvider();
            try
            {
                //oFileStream = new System.IO.FileStream(pathName, System.IO.FileMode.Open, System.IO.FileAccess.Read, System.IO.FileShare.ReadWrite);

                arrbytHashValue = oMD5Hasher.ComputeHash(oFileStream);//计算指定Stream 对象的哈希值

                oFileStream.Close();

                //由以连字符分隔的十六进制对构成的String，其中每一对表示value 中对应的元素；例如“F-2C-4A”

                strHashData = System.BitConverter.ToString(arrbytHashValue);
                //替换-
                strHashData = strHashData.Replace("-", "");

                strResult = strHashData;
            }
            catch (System.Exception ex)
            {
                LogHelp.Error("MD5校验失败"+ex.ToString());
            }
            return strResult;
        }
    }
}