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Category Archives: Jesting
“A jest’s prosperity lies in the ear of him that hears it, never in the tongue of him that makes it.”
Writeups – Basics, Beginner (Google CTF 2020)
Last weekend, I spent a little bit of time on Google CTF. I solved 2 challenges – just goes to show how out of practice I am, use it or lose it! – and I’ll present the writeups below, for … Continue reading →
Side-Channel Analysis of Keeloq
Over the past few days, I have spent some time reviewing side-channel analysis of the Keeloq cipher. This post documents the results of this review. Background This work is not “new” per se: various forms of side-channel attack against Keeloq … Continue reading →
Observations on Trace De-noising
Over the last few days, I’ve been trying different approaches to improve my side channel analysis technique against smartcards. This post serves as some notes on the sources of noise impacting a power trace, and some observations of easily implemented … Continue reading →
Tooling Improvements! Hooray!
Over the past month, while staying the fuck at home, I’ve been steadily chipping away at improving my tooling. These are below, for reference (and partly self-motivation). Doxastica First conceived years ago when I wanted to cheat in Underrail, this … Continue reading →
Writeup – Old Crypto Server (AeroCTF)
This weekend, I spent a little bit of time doing AeroCTF, but couldn’t maintain focus due to the sheer number of other active projects. I solved one challenge in the time allocated, a fairly straightforward AES padding game that you … Continue reading →