diff --git a/src/Elektrifikatsiya/Elektrifikatsiya/Database/UserDatabaseContext.cs b/src/Elektrifikatsiya/Elektrifikatsiya/Database/UserDatabaseContext.cs
new file mode 100644
index 0000000..917764f
--- /dev/null
+++ b/src/Elektrifikatsiya/Elektrifikatsiya/Database/UserDatabaseContext.cs
@@ -0,0 +1,10 @@
+using Elektrifikatsiya.Models;
+
+using Microsoft.EntityFrameworkCore;
+
+namespace Elektrifikatsiya.Database;
+
+public class UserDatabaseContext : DbContext
+{
+    public DbSet<User> Users { get; set; }
+}
\ No newline at end of file
diff --git a/src/Elektrifikatsiya/Elektrifikatsiya/Elektrifikatsiya.csproj b/src/Elektrifikatsiya/Elektrifikatsiya/Elektrifikatsiya.csproj
index 6b1a00c..e04bc06 100644
--- a/src/Elektrifikatsiya/Elektrifikatsiya/Elektrifikatsiya.csproj
+++ b/src/Elektrifikatsiya/Elektrifikatsiya/Elektrifikatsiya.csproj
@@ -20,7 +20,13 @@
 		<PackageReference Include="Blazorise" Version="1.1.*" />
 		<PackageReference Include="Blazorise.Material" Version="1.1.*" />
 		<PackageReference Include="Blazorise.Icons.Material" Version="1.1.*" />
+		<PackageReference Include="Microsoft.EntityFrameworkCore" Version="7.0.2" />
+		<PackageReference Include="Microsoft.EntityFrameworkCore.Sqlite" Version="7.0.2" />
 		<PackageReference Include="Microsoft.VisualStudio.Azure.Containers.Tools.Targets" Version="1.17.0" />
 	</ItemGroup>
 
+	<ItemGroup>
+	  <Folder Include="Middleware\" />
+	</ItemGroup>
+
 </Project>
diff --git a/src/Elektrifikatsiya/Elektrifikatsiya/Models/Role.cs b/src/Elektrifikatsiya/Elektrifikatsiya/Models/Role.cs
new file mode 100644
index 0000000..f2afd89
--- /dev/null
+++ b/src/Elektrifikatsiya/Elektrifikatsiya/Models/Role.cs
@@ -0,0 +1,7 @@
+namespace Elektrifikatsiya.Models;
+
+public enum Role
+{
+    Admin,
+    User
+}
\ No newline at end of file
diff --git a/src/Elektrifikatsiya/Elektrifikatsiya/Models/User.cs b/src/Elektrifikatsiya/Elektrifikatsiya/Models/User.cs
new file mode 100644
index 0000000..99fc256
--- /dev/null
+++ b/src/Elektrifikatsiya/Elektrifikatsiya/Models/User.cs
@@ -0,0 +1,22 @@
+using System.ComponentModel.DataAnnotations;
+using System.ComponentModel.DataAnnotations.Schema;
+
+namespace Elektrifikatsiya.Models;
+
+public class User
+{
+    [DatabaseGenerated(DatabaseGeneratedOption.Identity)]
+    [Key]
+    public int Id { get; private set; }
+
+    public string Name { get; private set; }
+    public string PasswordHash { get; private set; }
+    public string? SessionToken { get; set; }
+    public DateTime LastLoginDate { get; set; }
+
+    public User(string name, string passwordHash)
+    {
+        Name = name;
+        PasswordHash = passwordHash;
+    }
+}
\ No newline at end of file
diff --git a/src/Elektrifikatsiya/Elektrifikatsiya/Program.cs b/src/Elektrifikatsiya/Elektrifikatsiya/Program.cs
index 44ecc11..d9004c1 100644
--- a/src/Elektrifikatsiya/Elektrifikatsiya/Program.cs
+++ b/src/Elektrifikatsiya/Elektrifikatsiya/Program.cs
@@ -25,12 +25,8 @@ app.UseHttpsRedirection();
 app.UseStaticFiles();
 
 app.UseRouting();
-
-app.UseEndpoints(endpoints =>
-{
-    _ = endpoints.MapBlazorHub();
-    _ = endpoints.MapFallbackToPage("/_Host");
-});
+app.MapBlazorHub();
+app.MapFallbackToPage("/_Host");
 
 app.Run();
 
diff --git a/src/Elektrifikatsiya/Elektrifikatsiya/Services/IAuthenticationService.cs b/src/Elektrifikatsiya/Elektrifikatsiya/Services/IAuthenticationService.cs
new file mode 100644
index 0000000..ac34b36
--- /dev/null
+++ b/src/Elektrifikatsiya/Elektrifikatsiya/Services/IAuthenticationService.cs
@@ -0,0 +1,53 @@
+using Elektrifikatsiya.Models;
+
+namespace Elektrifikatsiya.Services;
+
+public interface IAuthenticationService
+{
+    /// <summary>
+    /// Gets the current user.
+    /// </summary>
+    /// <returns> <see cref="Task"/> to <see langword="await"/> and the currently authenticated user.</returns>
+    Task<User?> GetUserAsync();
+
+    /// <summary>
+    /// Registers a new user.
+    /// </summary>
+    /// <param name="email">The E-mail address of the user.</param>
+    /// <returns>A <see cref="Task"/> to <see langword="await"/>.</returns>
+
+    Task RegisterUserAsync(string name, string password);
+
+    /// <summary>
+    /// Logs a user in.
+    /// </summary>
+    /// <param name="name">The E-mail address of the user.</param>
+    /// <returns>A <see cref="Task"/> to <see langword="await"/>.</returns>
+    Task<(bool Success, string? Message)> LoginUserAsync(string name, string password);
+
+    /// <summary>
+    /// Logs the user out.
+    /// </summary>
+    /// <returns>A <see cref="Task"/> to <see langword="await"/>.</returns>
+    Task LogoutUserAsync();
+
+    /// <summary>
+    /// Deletes the current user.
+    /// </summary>
+    /// <param name="deletionToken">The deletion token.</param>
+    /// <returns>A <see cref="Task"/> to <see langword="await"/> and a <see cref="bool"/> that indicates if the operation was successful.</returns>
+    Task<bool> DeleteUserAsync(string deletionToken);
+
+    /// <summary>
+    /// Checks if a user exists.
+    /// </summary>
+    /// <param name="name">The E-mail address of the user.</param>
+    /// <returns>A <see cref="Task"/> to <see langword="await"/> and a <see cref="bool"/> that indicates if the user exists.</returns>
+    Task<bool> UserExistsAsync(string name);
+
+    /// <summary>
+    /// Check if the current user is authenticated.
+    /// </summary>
+    /// <returns>A <see cref="Task"/> to <see langword="await"/> and a <see cref="bool"/> that indicates if the user is authenticated.</returns>
+    Task<bool> IsAuthenticated();
+}
\ No newline at end of file
diff --git a/src/Elektrifikatsiya/Elektrifikatsiya/Services/IAuthorizationService.cs b/src/Elektrifikatsiya/Elektrifikatsiya/Services/IAuthorizationService.cs
new file mode 100644
index 0000000..223d9c8
--- /dev/null
+++ b/src/Elektrifikatsiya/Elektrifikatsiya/Services/IAuthorizationService.cs
@@ -0,0 +1,13 @@
+using Elektrifikatsiya.Models;
+
+namespace Elektrifikatsiya.Services;
+
+public interface IAuthorizationService
+{
+    /// <summary>
+    /// Check if the current user is authorized.
+    /// </summary>
+    /// <param name="requiredRole">The minimum required role.</param>
+    /// <returns>A <see cref="Task"/> to <see langword="await"/> and a <see cref="bool"/> that indicates if the user is authorized.</returns>
+    Task<bool> IsAuthorized(Role requiredRole);
+}
\ No newline at end of file