Sign-In and Sign-Up logic for an Authentication System in Nestjs

One of the most important parts of building an authentication system is having an effective login and sign-up logic that covers important edge cases to prevent data breaches or security concerns. In this write-up, I’ll walk you through how I implemented a basic login and sign-up logic in the Auth Service for an application in Nestjs to cyber attacks such as rainbow table attack. We will cover the logic for password encryption using salt and hashes in the most …

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