The leaves are falling and the air is crisper, which means it’s time to get cozy and learn a little about ciphers through challenges.  This month, schr0ding3r is presenting:

HTB CTF Crypto Challenge Walkthrough (or – Exploiting Nonce Reuse in ECDSA Signatures)
An interactive walkthrough of a cryptography challenge (credit to Hack the Box for hosting it for their Defcon CTF this year). I will show what the challenge is, what indicated a vulnerability, a brief intro to elliptic curve algorithms, and then how I crafted an exploit to harvest private keys.

We look forward to seeing you in-person.  If you can’t make it, we will also attempt a google meet session.

Meeting info:
ECPI University
November 9, 2023 @ 6:00PM
5234 Airport Rd NW #200, Roanoke, VA 24012
https://maps.app.goo.gl/usS5mLFdqBFQaM5M6

Speaker Bio:
schr0ding3r has a B.S. in physics and a minor in mathematics; additionally, he is currently pursuing a B.S. in Cybersecurity. He dabbles in everything [but am a master of nothing], including hacking, programming, philosophy, dancing, theater, and ancient Hebrew. Whatever the topic, schr0ding3r seeks to probe the very depths of it.

Hope to see you there!