From e6518e3918da5e3cc955f6ffdcb3d6dc9f32a91c Mon Sep 17 00:00:00 2001
From: Tim Young <tim.young@lightsys.org>
Date: Wed, 9 Aug 2017 16:52:54 -0500
Subject: [PATCH] Get encryption / decryption working for users.

---
 EduNetworkBuilder/NetworkBuilder.cs | 19 ++++++++++++++++++-
 EduNetworkBuilder/PersonClass.cs    | 20 ++++++++++++++++----
 2 files changed, 34 insertions(+), 5 deletions(-)

diff --git a/EduNetworkBuilder/NetworkBuilder.cs b/EduNetworkBuilder/NetworkBuilder.cs
index c4eb6ca..7d9c490 100644
--- a/EduNetworkBuilder/NetworkBuilder.cs
+++ b/EduNetworkBuilder/NetworkBuilder.cs
@@ -1743,7 +1743,24 @@ namespace EduNetworkBuilder
                 }
                 else if (extension == ".enbu")
                 {
-                    CurrentUser = new PersonClass(filename);
+                    int counter = 0;
+                    PersonClass tUser = null;
+                    while (counter < 3)
+                    {
+                        string tPass = NB.TextPromptBox("Enter a password", Properties.Resources.NBIco, true);
+                        string tUserName = Path.GetFileNameWithoutExtension(filename);
+                        string PasToUse = tUserName + tPass;
+                        tUser = PersonClass.TryLoad(filename, PasToUse);
+                        if (tUser != null) break;
+                        counter++;
+                    }
+                    if(tUser == null)
+                    {
+                        //failed to load.
+                        MessageBox.Show("Too many password failures.  Exiting.");
+                        return;
+                    }
+                    CurrentUser = tUser;
                     CurrentUser.filepath = Path.GetDirectoryName(filename); //store the directory
                     OurSettings = NB.GetSettings(); //Grab the new settings from the user
                     UpdateMenu();
diff --git a/EduNetworkBuilder/PersonClass.cs b/EduNetworkBuilder/PersonClass.cs
index 88b11a7..d5ef087 100644
--- a/EduNetworkBuilder/PersonClass.cs
+++ b/EduNetworkBuilder/PersonClass.cs
@@ -44,9 +44,8 @@ namespace EduNetworkBuilder
         /// Used to determine if the user we are working with is the admin account.
         /// </summary>
         public bool isAdmin { get; protected set; }
-        /// <summary>
-        /// EverCompletedPuzzles is a list of puzzles that they have completed once.
-        /// </summary>
+
+        public string EncryptionPassword { get { return UserName + Password; } }
 
         public List<SchoolworkClass> Projects = new List<SchoolworkClass>();
 
@@ -79,7 +78,20 @@ namespace EduNetworkBuilder
         {
             Load(reader);
         }
-
+        /// <summary>
+        /// Try to load the specified filename. Return a new person record if it succeeds.
+        /// Return null if it fails to load.  (bad password, bad file, etc)
+        /// </summary>
+        /// <param name="Filename">The filename to load</param>
+        /// <param name="password">The password to try</param>
+        /// <returns></returns>
+        public static PersonClass TryLoad(string Filename, string password)
+        {
+            PersonClass pc = new PersonClass();
+            if (pc.Load(Filename, password))
+                return pc;
+            return null;
+        }
 
         public void ChangePassword(string NewPassword)
         {