Скачать или смотреть Resolving Sign In Issues with Custom SignInManager in .NET 5 Using LibSodium

Discover how to successfully maintain sign-in sessions with a custom SignInManager in `.NET 5` that utilizes `LibSodium` for password verification.
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Resolving Sign In Issues with Custom SignInManager in .NET 5 Using LibSodium

Signing into applications seamlessly can often be a challenge, especially when dealing with custom authentication mechanisms. In this guide, we'll address a specific issue encountered with a custom SignInManager in a .NET 5 application that uses LibSodium for password hashing.

The Problem

After implementing a custom SignInManager, users were receiving a SignInResult.Success response, but the sign-in state wasn't being maintained. Notably, the absence of a set-cookie header in the response indicated that the authentication cookie wasn't being created, leaving the user signed out upon navigating to subsequent pages.

Understanding the Custom SignInManager

Here’s a quick overview of how the custom SignInManager is structured:

We have an existing database, and passwords are securely stored leveraging LibSodium.

A bespoke version of SignInManager (CustomSignInManager) is utilized to extend functionality.

The sign-in process verifies user credentials against the stored encrypted passwords.

Here's a relevant excerpt of the PasswordSignInAsync method in our CustomSignInManager:

[[See Video to Reveal this Text or Code Snippet]]

Transition to Native .NET Hasher

As part of the implementation plan, the aim is to move from LibSodium to a native .NET password hasher after users have successfully signed in.

Solution: How to Maintain Sign-In State

The ultimate cause of the issue was rooted in missing a critical step after validating the user's password. The solution is straightforward:

Call await SignInAsync(user, isPersistent); after verifying the password.

This method is responsible for establishing the necessary sessions and creating the authentication cookie.

Here's the updated portion of the code:

[[See Video to Reveal this Text or Code Snippet]]

Using SignInOrTwoFactorAsync

Additionally, for scenarios involving two-factor authentication (TFA), consider using SignInOrTwoFactorAsync which provides an integrated solution for handling additional authentication steps.

Implementing the Changes

Example of Sign-In Call

[[See Video to Reveal this Text or Code Snippet]]

Configuring Services

Ensure your Startup.ConfigureServices method properly registers the custom SignInManager:

[[See Video to Reveal this Text or Code Snippet]]

Conclusion

Maintaining sign-in sessions is critical for providing a smooth user experience. By identifying the missing SignInAsync call after validating user credentials, the application can effectively manage authentication cookies and maintain user sessions.

If you're facing similar issues in your .NET 5 applications, consider revisiting the implementation of your sign-in mechanisms. With the proper adjustments, like invoking SignInAsync, you can ensure that your custom authentication system works flawlessly. Happy coding!