From cdd4dceb0a08f89f347d8491781ea771b8a02f1d Mon Sep 17 00:00:00 2001
From: Hui Lan <lanhui@zjnu.edu.cn>
Date: Wed, 18 Mar 2020 22:16:00 +0800
Subject: [PATCH] Script.php: we create  for backward compatibility. -Hui

---
 Script.php | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/Script.php b/Script.php
index 93ae150..5a84f98 100644
--- a/Script.php
+++ b/Script.php
@@ -158,7 +158,7 @@ header("Location: index.php");
  { 
      while($row = mysqli_fetch_assoc($result)) {
        //  verify the hashed password and unhashed password
-       $sha512pass = hash('sha512', $password);
+       $sha512pass = hash('sha512', $password); // for backward compatibility.  Old passwords were hashed using SHA512 algorithm.
        if(password_verify($password, $row["Password"]) or $sha512pass == $row["HashPassword"] or $password == $row["Password"]){
       $_SESSION['user_id']=$row['User_ID'];
      $_SESSION['user_email']=$row['Email'];