I first discovered about Yugioh (遊戯王) on 📺
🎮 It's a card game! No, wait, it is also a series where the story began on a timid boy who solves the Millenium Puzzle causing his body to be a host of a mysterious spirit of which social status is very high.
Watch and Play Yu-Gi-Oh!
I was using Microsoft Authenticator app and got surprised that it was working offline! At this moment, I got curious how time-based OTP works and later found out that the same algorithm works for other authenticator apps such as Google Authenticator and Duo Mobile and more.
Learning the algorithm with Node.js and JavaScript requires you to have at least prior knowledge on the following: Base 32 encoding, Binary Numbers, Bitwise Operators and Node.js Buffer.
Know more about binary numbers and how computers actually works by playing around with numbers and hexadecimal values.
This post will help you realize and understand more about
what is Base 2, Base 10, Base 16 and how to manually compute
and convert each value between binary, and decimal.
Before you proceed, you should have a better understanding about Binary Numbers. See this blog post to learn more.
Bitwise operators is best suited when dealing with binary values and writing algorithms for encoding/encryption.
Using JavaScript/Typescript and Node.js to understand the basics on how Base32 encoding
and decoding works that follows the RFC 4648 standard format.
This may be a good exercise for your programming language when you want to play around with encoding and binary data.
Wander into Node.js built-in class Buffer
and explore the world of binary data, and play around the equivalent conversion between
hexadecimal, decimal, plus other characters at easy level.
💻 01001001 01010101
Deploying static frontend web apps (such as Vanilla, Angular, React, Vue, etc) in GitHub?
It's possible to just add, commit and push your code and automate things like npm run build
to setup Github Pages for your repository.
Always forgetful on the updation to increment your version in package.json
when building Node.js projects?
I found Husky 🐶 can woof and remind you more than it can help you automatically lint commit messages, code and run tests upon commiting or pushing to GitHub.
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