diff --git a/MCTG/MCTGLib/IPasswordManager.cs b/MCTG/MCTGLib/IPasswordManager.cs
new file mode 100644
index 0000000..2473a32
--- /dev/null
+++ b/MCTG/MCTGLib/IPasswordManager.cs
@@ -0,0 +1,17 @@
+using MCTGLib;
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace Model
+{
+    public interface IPasswordManager
+    {
+        public void changePassword(User user, string newPassword);
+        public string HashPassword(User user);
+        public bool VerifyPassword(string hashedPassword);
+
+    }
+}
diff --git a/MCTG/MCTGLib/PasswordManager.cs b/MCTG/MCTGLib/PasswordManager.cs
new file mode 100644
index 0000000..2ed6017
--- /dev/null
+++ b/MCTG/MCTGLib/PasswordManager.cs
@@ -0,0 +1,12 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace Model
+{
+    public class PasswordManager : IPasswordManager
+    {
+    }
+}
diff --git a/MCTG/MCTGLib/User.cs b/MCTG/MCTGLib/User.cs
index 4cda05a..27c96f1 100644
--- a/MCTG/MCTGLib/User.cs
+++ b/MCTG/MCTGLib/User.cs
@@ -12,7 +12,7 @@ namespace MCTGLib
     /// A user is an entity with a name, a surname, mail, profilePict and a list of priority.
     /// This user can login with a Id and password
     /// </summary>
-    public class User 
+    public class User : IEquatable<User>
     {
         #region Private Attributes
 
@@ -21,8 +21,7 @@ namespace MCTGLib
         private string mail = "";
         private string picture = "";
         private string password = "";
-        //private bool isAdmin;
-        private string defaultUserSavePath = "";
+        //private string defaultUserSavePath = "";
         private List<Priority> priorities;
         #endregion
 
@@ -70,7 +69,7 @@ namespace MCTGLib
         public string Mail
         {
             get { return mail; }
-            init
+            private init
             {
                 if (string.IsNullOrWhiteSpace(value))
                 {
@@ -79,6 +78,17 @@ namespace MCTGLib
                 mail = value;
             }
         }
+
+        ///<summary>
+        /// Property to initiate password, change it, and 
+        /// </summary>
+        public string Password
+        {
+            get { return password; }
+
+            set { password = value; }
+        }
+       
         /// <summary>
         /// For now, we define the ProfilPict as a string which is "PhotoParDefaut"
         /// when the value is null.
@@ -90,25 +100,6 @@ namespace MCTGLib
           
         }
 
-
-        ///<summary>
-        ///Password property 
-        /// </summary>
-        public string Password
-        {
-            get => password; 
-            private set
-            {
-                string modelPassword =  @"[a-z]*[A-Z]+$" ;
-                if (!string.IsNullOrWhiteSpace(value))
-                {
-                    throw new ArgumentException("Le mot de passe ne doit pas etre vide ");
-                }
-               // if (Regex.IsMatch(value, modelPassword, RegexOptions. )
-            }
-                
-        }
-
         /// <summary>
         /// This is the list of priorities specific tu the user. This list is initiate
         /// by default. User could change it at will.
@@ -120,6 +111,11 @@ namespace MCTGLib
             set=> priorities = value;
         }
 
+        public  bool Equals(User other)
+        {
+            return Name.Equals(other.Name) && Surname.Equals(other.Surname) && Mail.Equals(other.Mail) && ;
+        }
+
 
         #endregion
 
@@ -137,7 +133,6 @@ namespace MCTGLib
             Name = name;
             Surname = surname;
             Mail = mail;
-            Password = password;
             priorities = new List<Priority> {
                 Priority.Gourmet,
                 Priority.Economic,
diff --git a/MCTG/Tests/MCTGLib_UnitTests/MCTGLib_UnitTests.csproj b/MCTG/Tests/MCTGLib_UnitTests/MCTGLib_UnitTests.csproj
index 42ff44d..66ef51e 100644
--- a/MCTG/Tests/MCTGLib_UnitTests/MCTGLib_UnitTests.csproj
+++ b/MCTG/Tests/MCTGLib_UnitTests/MCTGLib_UnitTests.csproj
@@ -22,4 +22,8 @@
     </PackageReference>
   </ItemGroup>
 
+  <ItemGroup>
+    <ProjectReference Include="..\..\MCTGLib\Model.csproj" />
+  </ItemGroup>
+
 </Project>
diff --git a/MCTG/Tests/MCTGLib_UnitTests/UnitTest1.cs b/MCTG/Tests/MCTGLib_UnitTests/UnitTest1.cs
deleted file mode 100644
index 4d22b68..0000000
--- a/MCTG/Tests/MCTGLib_UnitTests/UnitTest1.cs
+++ /dev/null
@@ -1,11 +0,0 @@
-namespace MCTGLib_UnitTests
-{
-    public class UnitTest1
-    {
-        [Fact]
-        public void Test1()
-        {
-
-        }
-    }
-}
\ No newline at end of file
diff --git a/MCTG/Tests/MCTGLib_UnitTests/test_unit_user.cs b/MCTG/Tests/MCTGLib_UnitTests/test_unit_user.cs
new file mode 100644
index 0000000..822e958
--- /dev/null
+++ b/MCTG/Tests/MCTGLib_UnitTests/test_unit_user.cs
@@ -0,0 +1,19 @@
+using MCTGLib;
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace MCTGLib_UnitTests
+{
+    public class test_unit_user
+    {
+        [Fact]
+        public void TestConstructUser()
+        {
+            User user = new User("Bob","Dylan", "bd@gmail.com");
+            Assert.
+        }
+    }
+}