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:

20160 Hash-Based Signatures Part I: One-Time Signatures (OTS)
08537 The Strobe Protocol Framework
04237 Database Encryption
15039 Common x509 certificate validation/creation pitfalls
02408 Bits and Bytes ordering in 5 minutes
03825 Problems that UDP and only UDP has
06009 Speed and Cryptography

Here are the latest links posted:

19 Aug Homomorphic Encryption Standard
17 Aug How We Avoided A Second Dual-Ec-Drbg Fiasco
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

You can also suggest a link.

Smart Contract Security @ IT Camp posted June 2018

Today Software Magazine interviewed me at IT Camp about smart contract security.

Yours truly.

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