Posts

Glacierctf 2024 - AES Overdrive

I had the pleasure of providing a challenge for the third iteration of the Glacier 2024 event in the crypto category. It is a symmetric encryption challenge that is split into an easier first stage and a more challenging second stage, which revolves around symmetric cryptanalysis to recover a round key of AES.

Google CTF 2023 - myTLS

During the Google CTF 2023, my college and I encountered a fascinating challenge which was TLS themed. The task at hand involved exploiting files writes, hashes and signatures.

Introduction to Censorship Resistance Systems

I recently had the opportunity to educate myself a bit about Censorship Resistance Systems (CRS) and wanted to share my understanding to make it easier for those who are interested in this topic. In this blog post, I will summarize the SoK: Making Sense of Censorship Resistance Systems paper and the corresponding 15-minute talk at the Privacy Enhancing Technologies Symposium, both of which greatly helped me grasp this subject. I highly recommend reading the paper or watching the talk for a more in-depth understanding.

AngstromCTF 2023 - Royal Society of Arts 2

Challenge description

RSA strikes strikes strikes strikes strikes again again again again again!

Author: JoshDaBosh

Insomni'hack CTF 2023 - Still counting on you

There was only one crypto challenge at the Insomni’hack CTF 2023, and that was this one. Our application runs on a server, and we have a Python file that shows us how it works.