Curriculum
ASP.NET Core Identity is Microsoft’s complete membership and authentication system for ASP.NET Core applications. ASP.NET Core Identity provides user registration, login, logout, password management, role management, email confirmation, account lockout, multi-factor authentication, and security features required by modern web applications.
Understanding ASP.NET Core Identity is essential because most enterprise applications need secure user management. Instead of building authentication and user management from scratch, developers can use ASP.NET Core Identity to implement industry-standard security practices quickly and efficiently.
ASP.NET Core Identity is a framework that provides:
User Management
Authentication
Authorization
Role Management
Password Security
Account SecurityIt is built into ASP.NET Core and integrates with Entity Framework Core.
Without Identity:
Build Login System
Build Registration System
Build Role Management
Build Password Security
Build Account RecoveryWith Identity:
Ready-Made Security Features
Built-In Authentication
Built-In Authorization
Enterprise SecurityIdentity saves development time and improves security.
ASP.NET Core Identity provides:
User Registration
User Login
User Logout
Password Hashing
Role Management
Account Lockout
Email Confirmation
Multi-Factor AuthenticationThese features cover most authentication requirements.
User
↓
Identity System
↓
Database
↓
Authentication
↓
AuthorizationIdentity manages users and security operations.
Identity handles:
Password Storage
User Verification
Role Assignment
Account Security
Session ManagementDevelopers do not need to implement these manually.
Main components:
IdentityUser
IdentityRole
UserManager
RoleManager
SignInManagerEach component has a specific responsibility.
IdentityUser represents an application user.
Example:
public class
ApplicationUser :
IdentityUser
{
}IdentityUser includes built-in user properties.
Examples:
Id
UserName
Email
PhoneNumber
PasswordHashThese properties are automatically managed by Identity.
Example:
public class
ApplicationUser :
IdentityUser
{
public string
Department
{
get;
set;
}
public string
City
{
get;
set;
}
}Custom fields can be added easily.
IdentityRole represents application roles.
Examples:
Admin
Teacher
Student
Manager
EmployeeRoles help manage permissions.
UserManager manages user operations.
Responsibilities:
Create Users
Update Users
Delete Users
Change Passwords
Find UsersUserManager is one of the most important Identity services.
Example:
private readonly
UserManager<
ApplicationUser>
userManager;Dependency Injection provides the service automatically.
SignInManager manages authentication operations.
Responsibilities:
Login
Logout
Authentication ValidationSignInManager handles user sign-in workflows.
RoleManager manages application roles.
Responsibilities:
Create Roles
Update Roles
Delete Roles
Role ValidationRole management becomes simple with RoleManager.
ASP.NET Core templates often include Identity.
Required Package:
Microsoft
.AspNetCore.IdentityIdentity is tightly integrated with ASP.NET Core.
Program.cs:
builder.Services
.AddIdentity<
ApplicationUser,
IdentityRole>()
.AddEntityFrameworkStores<
ApplicationDbContext>();This registers Identity services.
ASP.NET Core Identity creates tables automatically.
Examples:
AspNetUsers
AspNetRoles
AspNetUserRoles
AspNetUserClaims
AspNetRoleClaimsThese tables store user and security data.
Stores:
User Information
Email
Password Hash
Phone NumberThis is the primary user table.
Stores:
Role Names
Role InformationExamples:
Admin
Teacher
StudentRoles are managed automatically.
Registration Process:
User Enters Information
↓
Identity Creates User
↓
Password Hashed
↓
Data StoredIdentity manages registration securely.
Example:
var result =
await userManager
.CreateAsync(
user,
password);Identity automatically hashes the password.
Never store:
Plain Text PasswordsInstead:
Password HashBenefits:
Improved Security
Protection Against Data BreachesIdentity performs hashing automatically.
Example:
var result =
await signInManager
.PasswordSignInAsync(
username,
password,
true,
false);Identity validates credentials securely.
Enter Credentials
↓
Identity Validation
↓
Authentication Success
↓
Cookie Created
↓
Dashboard AccessThis is a typical login process.
Example:
await signInManager
.SignOutAsync();Result:
User Logged OutAuthentication data is removed.
Example:
await roleManager
.CreateAsync(
new IdentityRole(
"Admin"));A new role is created.
Example:
await userManager
.AddToRoleAsync(
user,
"Admin");The user receives administrator privileges.
Example:
await userManager
.IsInRoleAsync(
user,
"Admin");Output:
True
FalseRole membership can be verified easily.
Identity supports:
Email VerificationBenefits:
Valid User Accounts
Reduced Spam
Improved SecurityEmail confirmation is recommended.
Identity supports:
Forgot Password
Password Recovery
Reset LinksUsers can recover accounts securely.
Identity can lock accounts after failed login attempts.
Example:
5 Failed Attempts
↓
Account LockedProtects against brute-force attacks.
Identity supports:
Password
+
OTPBenefits:
Additional Security
Reduced RiskMFA is highly recommended.
Identity integrates directly with authorization.
Example:
[Authorize(
Roles="Admin")]Identity manages user roles automatically.
School Management System:
Users:
Admin
Teacher
Student
ParentIdentity handles:
Registration
Login
Roles
Password RecoveryAll security operations are centralized.
Identity Features:
Secure Login
MFA
Account Lockout
Password Policies
Role ManagementThese features help protect financial data.
Provides industry-standard authentication.
Reduces development effort.
Simplifies authorization.
Automatic hashing and validation.
Supports custom user properties.
These advantages make Identity the preferred authentication system.
Always use Identity hashing.
Use Identity whenever possible.
Reduces security.
Creates vulnerabilities.
Complicates authorization.
ASP.NET Core Identity is a framework for authentication and user management.
IdentityUser represents an application user.
UserManager handles user operations such as creation and management.
SignInManager manages authentication and login operations.
RoleManager manages application roles.
It provides secure authentication, authorization, and user management features.
ASP.NET Core Identity is Microsoft’s authentication and user management framework for ASP.NET Core applications.
IdentityUser is the built-in class that represents users.
UserManager is a service used to manage users.
SignInManager handles authentication operations.
Yes, ASP.NET Core Identity includes built-in role management.
It provides secure, scalable, and enterprise-ready authentication and authorization features.