euphoricair7

Fingerprint Driver Driving

Wed, 03 Jun 2026 00:00:00 +0000

The FT9201 fingerprint scanner has essentially no Linux support.

What looked like a cheap USB fingerprint reader turned into a months-long reverse engineering rabbit hole involving USB traces, stripped Windows drivers, vendor protocols, firmware state machines, and a surprising amount of yelling at a device that refused to wake up.

This post documents the first half of that journey: figuring out how the scanner actually talks.

When Performance Stops Being a Number

Mon, 29 Dec 2025 00:00:00 +0000

Curiosity & GO

Glyph

Mon, 22 Dec 2025 00:00:00 +0000

glyph glyph glyph

Garbled Circuits

Wed, 08 Oct 2025 00:00:00 +0000

Garbled….Circuits? Might sound like two unrelated terms clucked together with no context but as we go by, we present you a concept which is niche and inspired by some money problems XD I will start with what happened last week with my friends, Alice and Bob. Alice and Bob walk into a restaurant. The food was great, but the bill was… let’s just say it was as big as their egos.

Crypto Summer School

Sun, 22 Jun 2025 00:00:00 +0000

“NERD” That’s what I got called by one of my long-time friends when I told them that I was going to this Summer School on Cryptography organized by ACM India in collaboration with Trust Lab, IIT Bombay. “Where is it?” “IIT Bombay” “Aye, you’re going to Bombay!” Fast forward Day 1 I was expecting to meet cryptography nerds who only had conversations in protocols. Whom did I meet? A diverse crowd, more diverse than I expected.

FPGA Stuff

Thu, 17 Apr 2025 00:00:00 +0000

Learning to make a custom CPU

Me

Sun, 01 Oct 2023 00:00:00 +0000

Hello, I’m Shailja! Enjoying things along the way, love for Cryptography, Math, Ancient India, Cats and Rain. That’s me in short. My Background Currently an undergrad in Computer Science and Engineering and hence by the virtue of my degree and my self interest I am enjoying life. What I Do I thoroughly enjoy math and cryptography In addition to above, I am also into cloud, FPGAs and enjoy understanding how computers work at the lowest level