How do I define the password rules for identity in asp net 5 mvc 6 vnext

Defining Password Rules for Identity in ASP.NET 5 MVC 6

When working with ASP.NET 5 MVC 6 VNext, it is important to define password rules for identity to ensure the security of user accounts. In this article, we will explore how to define password rules using the Identity framework.

Step 1: Configuring Password Options

The step is to configure the password options in the Startup.cs file. This file is located in the root of your ASP.NET project. Open the file and locate the ConfigureServices method.

public void ConfigureServices(IServiceCollection services)
    // Other ...

    services.Configure(options =>
        // Configure password requirements
        options.Password.RequireDigit = true;
        options.Password.RequiredLength = 8;
        options.Password.RequireNonAlphanumeric = true;
        options.Password.RequireUppercase = true;
        options.Password.RequireLowercase = true;
        options.Password.RequiredUniqueChars = 6;

    // Other configurations...

In the above code, we are configuring the password options using the IdentityOptions class. Here, we have set various properties to define the password rules. Let's go through each property:

  • RequireDigit: Specifies a digit is required in the password.
  • RequiredLength: Specifies the minimum length of the password.
  • RequireNonAlphanumeric: Specifies whether a non-alphanumeric character is required in the password.
  • RequireUppercase: Specifies whether an uppercase letter is required in the password.
  • RequireLowercase: Specifies whether a lowercase letter is required in the password.
  • RequiredUniqueChars: Specifies the minimum of unique characters required in the password.

Step 2: Applying Password Rules to Identity

Once the password options are configured, the next step is to apply these rules to the Identity framework. Open the Startup.cs file again and locate the Configure method.

public void Configure( app, IWebHostEnvironment env)
    // Other configurations...


    // Other configurations...

In the above code, we need to add the following line before the app.UseAuthorization() line:


This line adds the Identity middleware to the request pipeline, which applies the password rules to the authentication process.

Step 3: Testing the Password Rules

Now that we have defined the password rules, let's test them by creating a new user account. In your ASP.NET project, navigate to the AccountController.cs file located in the Controllers folder.

Locate the action method and add the following code at the beginning:

public async Task Register(RegisterViewModel model)
    if (ModelState.IsValid)
        var user = new ApplicationUser { UserName = model.Email, Email = model.Email };
        var result = await _userManager.CreateAsync(user, model.Password);

        if (result.Succeeded)
            // User account created successfully
            return RedirectToAction("Index", "Home");

        foreach (var error in result.Errors)
            ModelState.AddModelError(string.Empty, error.Description);

    // Invalid model state, return to registration page
    return View(model);

In the above code, we are using the CreateAsync method of the UserManager class to create a new user account. The model.Password parameter the password entered by the user.

When the password does not meet the defined rules, the CreateAsync method will return a result object with the Succeeded property set to false. In this case, we are adding the error descriptions to the model state, which will be displayed to the user.

Now, when a user tries to register with a password that does not meet the defined rules, they will receive an error message indicating the password requirements.


In this article, we have learned how to define password rules for identity in ASP.NET 5 MVC 6 VNext. By configuring the password options and applying them to the Identity framework, we can ensure the security of user accounts. to always choose strong password rules to protect user data.

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