diff --git a/BlazorPolicyAuth/BlazorPolicyAuth.csproj b/BlazorPolicyAuth/BlazorPolicyAuth.csproj
index b82a96e..1b2989d 100644
--- a/BlazorPolicyAuth/BlazorPolicyAuth.csproj
+++ b/BlazorPolicyAuth/BlazorPolicyAuth.csproj
@@ -19,6 +19,7 @@
 
   <ItemGroup>
     <Folder Include="Migrations\" />
+    <Folder Include="Services\" />
   </ItemGroup>
   
 </Project>
diff --git a/BlazorPolicyAuth/Models/Entities/UserAccount.cs b/BlazorPolicyAuth/Models/Entities/UserAccount.cs
index 584701f..8504e39 100644
--- a/BlazorPolicyAuth/Models/Entities/UserAccount.cs
+++ b/BlazorPolicyAuth/Models/Entities/UserAccount.cs
@@ -18,4 +18,9 @@ public class UserAccount
     [Column("password")]
     [MaxLength(100)]
     public string? Password { get; set; }
+
+	public byte[] PasswordHash { get; set; }
+	public byte[] PasswordSalt { get; set; }
+	public DateTime DateCreated { get; set; } = DateTime.Now;
+	public string Role { get; set; } = "User";
 }
\ No newline at end of file
diff --git a/BlazorPolicyAuth/Models/ViewModels/LoginViewModel.cs b/BlazorPolicyAuth/Models/ViewModels/LoginViewModel.cs
deleted file mode 100644
index 24bce9d..0000000
--- a/BlazorPolicyAuth/Models/ViewModels/LoginViewModel.cs
+++ /dev/null
@@ -1,7 +0,0 @@
-namespace BlazorPolicyAuth.Models.ViewModels;
-
-public class LoginViewModel
-{
-    public string? UserName { get; set; }
-    public string? Password { get; set; }
-}
\ No newline at end of file
diff --git a/BlazorPolicyAuth/Models/ViewModels/ServiceResponse.cs b/BlazorPolicyAuth/Models/ViewModels/ServiceResponse.cs
new file mode 100644
index 0000000..bb171d3
--- /dev/null
+++ b/BlazorPolicyAuth/Models/ViewModels/ServiceResponse.cs
@@ -0,0 +1,9 @@
+namespace BlazorPolicyAuth.Models.ViewModels
+{
+    public class ServiceResponse<T>
+    {
+        public T? Data { get; set; }
+        public bool Success { get; set; } = true;
+        public string Message { get; set; } = string.Empty;
+    }
+}
diff --git a/BlazorPolicyAuth/Models/ViewModels/UserChangePassword.cs b/BlazorPolicyAuth/Models/ViewModels/UserChangePassword.cs
new file mode 100644
index 0000000..f32f5ec
--- /dev/null
+++ b/BlazorPolicyAuth/Models/ViewModels/UserChangePassword.cs
@@ -0,0 +1,12 @@
+using System.ComponentModel.DataAnnotations;
+
+namespace BlazorPolicyAuth.Models.ViewModels
+{
+	public class UserChangePassword
+	{
+		[Required, StringLength(100, MinimumLength = 5)]
+		public string Password { get; set; } = string.Empty;
+		[Compare("Password", ErrorMessage = "The password do not match")]
+		public string ConfirmPassword { get; set; } = string.Empty;
+	}
+}
diff --git a/BlazorPolicyAuth/Models/ViewModels/UserLogin.cs b/BlazorPolicyAuth/Models/ViewModels/UserLogin.cs
new file mode 100644
index 0000000..6c20e0a
--- /dev/null
+++ b/BlazorPolicyAuth/Models/ViewModels/UserLogin.cs
@@ -0,0 +1,11 @@
+using System.ComponentModel.DataAnnotations;
+
+namespace BlazorPolicyAuth.Models.ViewModels;
+
+public class UserLogin
+{
+	[Required, EmailAddress]
+	public string UserName { get; set; } = string.Empty;
+	[Required]
+	public string Password { get; set; }
+}
\ No newline at end of file
diff --git a/BlazorPolicyAuth/Models/ViewModels/UserRegister.cs b/BlazorPolicyAuth/Models/ViewModels/UserRegister.cs
new file mode 100644
index 0000000..ec3dd3f
--- /dev/null
+++ b/BlazorPolicyAuth/Models/ViewModels/UserRegister.cs
@@ -0,0 +1,14 @@
+using System.ComponentModel.DataAnnotations;
+
+namespace BlazorPolicyAuth.Models.ViewModels
+{
+	public class UserRegister
+	{
+		[Required, EmailAddress]
+		public string Email { get; set; } = string.Empty;
+		[Required, StringLength(100, MinimumLength = 5)]
+		public string Password { get; set; } = string.Empty;
+		[Compare("Password", ErrorMessage = "The password do not match.")]
+		public string ConfirmPassword { get; set; } = string.Empty;
+	}
+}
diff --git a/BlazorPolicyAuth/Services/AuthService/AuthService.cs b/BlazorPolicyAuth/Services/AuthService/AuthService.cs
new file mode 100644
index 0000000..6237c9e
--- /dev/null
+++ b/BlazorPolicyAuth/Services/AuthService/AuthService.cs
@@ -0,0 +1,140 @@
+
+using BlazorPolicyAuth.Data;
+using BlazorPolicyAuth.Models.Entities;
+using BlazorPolicyAuth.Models.ViewModels;
+using BlazorPolicyAuth.Services.AuthService;
+using Microsoft.EntityFrameworkCore;
+using Microsoft.IdentityModel.Tokens;
+using System.IdentityModel.Tokens.Jwt;
+using System.Security.Claims;
+using System.Security.Cryptography;
+using System.Text;
+
+namespace BlazorAuth.Server.Services.AuthService;
+
+public class AuthService : IAuthService
+{
+	private readonly AppDbContext _context;
+	private readonly IConfiguration _configuration;
+	private readonly IHttpContextAccessor _httpContextAccessor;
+
+	public AuthService(AppDbContext context, IConfiguration configuration, IHttpContextAccessor httpContextAccessor)
+	{
+		_context = context;
+		_configuration = configuration;
+		_httpContextAccessor = httpContextAccessor;
+	}
+
+	public async Task<ServiceResponse<int>> Register(UserAccount user, string password)
+	{
+		if (await UserExists(user.UserName))
+		{
+			return new ServiceResponse<int> { Success = false, Message = "User already exist." };
+		}
+
+		CreatePasswordHash(password, out byte[] passwordHash, out byte[] passwordSalt);
+
+		user.PasswordHash = passwordHash;
+		user.PasswordSalt = passwordSalt;
+
+		_context.UserAccounts.Add(user);
+		await _context.SaveChangesAsync();
+
+		return new ServiceResponse<int> { Data = user.Id, Message = "Registration successful" };
+	}
+
+	public async Task<bool> UserExists(string email)
+	{
+		if (await _context.UserAccounts.AnyAsync(user => user.UserName.ToLower().Equals(email.ToLower())))
+		{
+			return true;
+		}
+		return false;
+	}
+
+	public async Task<ServiceResponse<string>> Login(string email, string password)
+	{
+		var response = new ServiceResponse<string>();
+		var user = await _context.UserAccounts.FirstOrDefaultAsync(u => u.UserName.ToLower().Equals(email.ToLower()));
+		if (user == null)
+		{
+			response.Success = false;
+			response.Message = "User not found.";
+		}
+		else if (!VeriyPasswordHash(password, user.PasswordHash, user.PasswordSalt))
+		{
+			response.Success = false;
+			response.Message = "Wrong password.";
+		}
+		else
+		{
+			response.Data = CreateToken(user);
+		}
+
+		return response;
+	}
+
+	public async Task<ServiceResponse<bool>> ChangePassword(int userId, string newPassword)
+	{
+		var user = await _context.UserAccounts.FindAsync(userId);
+		if (user == null)
+		{
+			return new ServiceResponse<bool> { Success = false, Message = "User not found." };
+		}
+
+		CreatePasswordHash(newPassword, out byte[] passwordHash, out byte[] passwordSalt);
+
+		user.PasswordHash = passwordHash;
+		user.PasswordSalt = passwordSalt;
+
+		await _context.SaveChangesAsync();
+
+		return new ServiceResponse<bool> { Data = true, Message = "Password has been changed." };
+	}
+
+	public int GetUserId() => int.Parse(_httpContextAccessor.HttpContext.User.FindFirstValue(ClaimTypes.NameIdentifier));
+
+	public string GetUserEmail() => _httpContextAccessor.HttpContext.User.FindFirstValue(ClaimTypes.Name);
+
+	public async Task<UserAccount> GetUserByEmail(string email)
+	{
+		return await _context.UserAccounts.FirstOrDefaultAsync(u => u.UserName.Equals(email));
+	}
+
+	private static void CreatePasswordHash(string password, out byte[] passwordHash, out byte[] passwordSalt)
+	{
+		using var hmac = new HMACSHA512();
+		passwordSalt = hmac.Key;
+		passwordHash = hmac.ComputeHash(Encoding.UTF8.GetBytes(password));
+	}
+
+	private static bool VeriyPasswordHash(string password, byte[] passwordHash, byte[] passwordSalt)
+	{
+		using var hmac = new HMACSHA512(passwordSalt);
+		var computedHash = hmac.ComputeHash(Encoding.UTF8.GetBytes(password));
+		return computedHash.SequenceEqual(passwordHash);
+	}
+
+	private string CreateToken(UserAccount user)
+	{
+		var claims = new List<Claim>
+		{
+			new(ClaimTypes.NameIdentifier, user.Id.ToString()),
+			new(ClaimTypes.Name, user.UserName),
+			new(ClaimTypes.Role, user.Role)
+		};
+
+		var key = new SymmetricSecurityKey(Encoding.UTF8.GetBytes(_configuration.GetSection("AppSettings:Token").Value));
+
+		var creds = new SigningCredentials(key, SecurityAlgorithms.HmacSha512Signature);
+
+		var token = new JwtSecurityToken(
+			claims: claims,
+			expires: DateTime.Now.AddDays(1),
+			signingCredentials: creds);
+
+		var jwt = new JwtSecurityTokenHandler().WriteToken(token);
+
+		return jwt;
+	}
+}
\ No newline at end of file
diff --git a/BlazorPolicyAuth/Services/AuthService/IAuthService.cs b/BlazorPolicyAuth/Services/AuthService/IAuthService.cs
new file mode 100644
index 0000000..ce36661
--- /dev/null
+++ b/BlazorPolicyAuth/Services/AuthService/IAuthService.cs
@@ -0,0 +1,15 @@
+using BlazorPolicyAuth.Models.Entities;
+using BlazorPolicyAuth.Models.ViewModels;
+
+namespace BlazorPolicyAuth.Services.AuthService;
+
+public interface IAuthService
+{
+    Task<ServiceResponse<int>> Register(UserAccount user, string password);
+    Task<bool> UserExists(string email);
+    Task<ServiceResponse<string>> Login(string email, string password);
+    Task<ServiceResponse<bool>> ChangePassword(int userId, string newPassword);
+    int GetUserId();
+    string GetUserEmail();
+    Task<UserAccount> GetUserByEmail(string email);
+}
\ No newline at end of file