How long is phone number token lifespan when we use asp net core identity

Introduction

When a web application using ASP.NET Core Identity, it is important to understand the lifespan of the phone number token. The phone number token is used for verifying and confirming phone during the registration or reset process. In this article, we will explore how long the phone number token lasts and how it can be customized.

Default Phone Number Token Lifespan

By default, the phone number token lifespan in ASP.NET Core Identity is set to 1 day. This means that once a phone number token is generated, it will expire after 24 hours. After the token , it cannot be used for verification or confirmation purposes.

Customizing Phone Number Token Lifespan

If you want to change the default phone number token lifespan, you can do so by modifying the IdentityOptions in the ConfigureServices method of the Startup .


 void ConfigureServices(IServiceCollection services)
{
    services.AddIdentity(options =>
    {
        options.Tokens.PhoneNumberTokenProviderOptions.TokenLifespan = TimeSpan.FromMinutes(30);
    })
    .AddEntityFrameworkStores()
    .AddDefaultTokenProviders();
}

In the above code snippet, we are the phone number token lifespan to 30 . You can customize it according to your application's requirements by the TimeSpan value.

Using the Phone Number Token

Once the phone number token is generated, it can be used for verification or confirmation purposes. Here is an example of how to use the phone number token in a registration process:


public  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)
        {
            var phoneNumberToken = await _userManager.GenerateChangePhoneNumberTokenAsync(user, model.PhoneNumber);
            
            // Send the phoneNumberToken to the user's phone for verification
            
            return RedirectToAction("VerifyPhoneNumber", new { phoneNumberToken });
        }
    }

    return View(model);
}

In the above code snippet, we are generating a phone number token using the GenerateChangePhoneNumberTokenAsync method. This token can then be sent to the user's phone for verification.

Conclusion

The phone number token lifespan in ASP.NET Core Identity is set to 1 day by default. However, it can be customized according to your application's requirements. By understanding and customizing the phone number token lifespan, you can ensure a secure and efficient registration or password reset process in your ASP.NET Core web application.

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