1 files changed, 57 insertions, 0 deletions
diff --git a/Assets/Scripts/FileUtil.cs b/Assets/Scripts/FileUtil.cs
new file mode 100644
index 0000000..b0e9b8c
--- /dev/null
+++ b/Assets/Scripts/FileUtil.cs
@@ -0,0 +1,57 @@
+using System.Collections;
+using System.Collections.Generic;
+using System.Security.Cryptography;
+using System.IO;
+using System;
+using UnityEngine;
+
+public class FileUtil {
+
+  public static string GetMD5Hash(byte[] data)
+  {
+    string strHash = "";
+    using (MD5CryptoServiceProvider md5 = new MD5CryptoServiceProvider())
+    {
+      byte[] bytesHash = md5.ComputeHash(data);
+      strHash = BitConverter.ToString(bytesHash);
+      strHash = strHash.Replace("-", "");
+    }
+    return strHash.ToLower();
+  }
+
+  public static string GetMD5Hash(string pathName)
+  {
+    if (!File.Exists(pathName))
+    {
+      Debug.LogError("GetMD5Hash Error, file not exist: " + pathName);
+      return "";
+    }
+    string strResult = "";
+    string strHash = "";
+
+    byte[] bytesHash;
+
+    FileStream fs = null;
+    using (MD5CryptoServiceProvider md5 = new MD5CryptoServiceProvider())
+    {
+      try
+      {
+        fs = new FileStream(pathName, FileMode.Open, FileAccess.Read, FileShare.ReadWrite);
+
+        bytesHash = md5.ComputeHash(fs);
+        fs.Close();
+        strHash = BitConverter.ToString(bytesHash);
+        strHash = strHash.Replace("-", "");
+
+        strResult = strHash;
+      }
+      catch (System.Exception ex)
+      {
+        Debug.LogError("read md5 file error :" + pathName + " e: " + ex.ToString());
+      }
+    }
+
+    return strResult.ToLower();
+  }
+
+}