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:

19982 Hash-Based Signatures Part I: One-Time Signatures (OTS)
16009 Fault attacks on RSA's signatures
54352 Let's Encrypt Overview
03075 A New Public-Key Cryptosystem via Mersenne Numbers
11536 Zero'ing memory, compiler optimizations and memset_s
05958 Speed and Cryptography
07785 How to Backdoor Diffie-Hellman: quick explanation

Here are the latest links posted:

16 Aug Knob Attack: Key Negotiation Of Bluetooth Attack: Breaking Bluetooth Security
04 Aug Sony's Ecdsa Code
04 Aug Standardise Noise Handshake For Libp2P
04 Aug Capital One: A Format-Preserving Encryption Implementation In Go
04 Aug Pwnie For Best Cryptographic Attack

You can also suggest a link.

The Real World Cryptography book is on sale posted last month

Hello there,

It look like my new book Real World Crypto, available on pre-access here, is the current best seller on Mannings.

best seller real world cryptography

What this means for you is that you can read the first chapters there for free (or purchase the book, you know :P) and tell me what you liked and didn't like.

What this mean for me is that I now have more pressure to finish the book.

Well done! You've reached the end of my post. Now you can leave me a comment :)