Hey! I'm David, a security engineer at the Blockchain team of Facebook, previously a security consultant for the Cryptography Services of NCC Group. This is my blog about cryptography and security and other related topics that I find interesting.

If you don't know where to start, you might want to check these popular articles:

13655 Common x509 certificate validation/creation pitfalls
02929 A New Public-Key Cryptosystem via Mersenne Numbers
04064 What is the BLS signature scheme?
50087 Let's Encrypt Overview
03496 Problems that UDP and only UDP has
23227 Developers Are Not Idiots
10796 Zero'ing memory, compiler optimizations and memset_s

Here are the latest links posted:

17 Jul What’S The Matter With Pgp? (2014)
17 Jul Gpg And Me (2015)
17 Jul The Pgp Problem
16 Jul New Face Of The Bank Of England's £50 Note Is Revealed As Alan Turing
15 Jul Algorithmic Aspects Of Elliptic Bases In Finite Field Discrete Logarithm Algorithms

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