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

tl;dr of the sweet32 attack (On the Practical (In-)Security of 64-bit Block Ciphers) posted September 2016

I wrote about that 3-weeks-ago attack on the NCC Group's blog, but I had a bit more to say about it, so I made a tl;dr video =) enjoy!

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