It’s been a busy month with school and all so I don’t have much time for new posts or writeups… I just started on an interesting challenge though, so I would like to share it with you guys.

Check out the Matasano Crypto Challenges.

We’ve built a collection of 48 exercises that demonstrate attacks on real-world crypto.

This is a different way to learn about crypto than taking a class or reading a book. We give you problems to solve. They’re derived from weaknesses in real-world systems and modern cryptographic constructions. We give you enough info to learn about the underlying crypto concepts yourself. When you’re finished, you’ll not only have learned a good deal about how cryptosystems are built, but you’ll also understand how they’re attacked.

I have only got my hands on the first set of 8 challenges and I only have time to complete the first 2 for now. It’s an interesting approach to learning cryptography and I certainly look forward to completing more of the challenges. So for all you wannabe crypto-experts out there, go give this challenge a shot!

tlsenum - A TLS cipher suite enumeration tool

Over the week, I wrote a useful command line tool called [tlsenum.py][github]that attempts to enumerate what TLS cipher suites a server s...… Continue reading

Symmetric Encryption 101

Published on April 27, 2014

Syscan 2014

Published on April 08, 2014