August 2025
Intermediate to advanced
372 pages
8h 31m
English
Content preview from Node.js Projects
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Chapter 4. Build a Secure Local Password Manager
This chapter covers the following:
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Data hashing concepts
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Working with Bcrypt
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Saving data to a MongoDB collection
Building applications on the server provides immediate benefits over building on the client. One of those benefits is enhanced control over data security.
The server engineer is typically responsible for protecting data in the database, determining what data the client can view, and who can see it. For this reason, there are a multitude of hashing packages on the npm registry to use with Node to hide sensitive data from everyone other than the data’s original owner.
Note
Although it is commonly expanded as “Node Package Manager,” npm is not officially an acronym. The creators of npm have stated that it originally stood for “npm is not an acronym.”
In this chapter, you will build a password manager using the bcrypt hashing package and mongodb for persistent storage. You’ll start by understanding what happens under the hood with hashing and how you can use this mechanism to build an effective productivity tool. Later, you’ll introduce document storage with MongoDB to keep your hashed data for future access.
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O’Reilly covers everything we've got, with content to help us build a world-class technology community, upgrade the capabilities and competencies of our teams, and improve overall team performance as well as their engagement.Julian F.
I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.Addison B.
I’ve been on the O’Reilly platform for more than eight years. I use a couple of learning platforms, but I'm on O'Reilly more than anybody else. When you're there, you start learning. I'm never disappointed.Amir M.
I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.