Simon Willison’s Weblog

Schneier on Security: Cryptanalysis of SHA-1. If you want to understand the “breaking” of SHA-1, this is the place to go. Surprisingly accessible.

Posted 19th February 2005 at 3:12 pm

Recent articles

The evolution of OpenAI's mission statement - 13th February 2026
Introducing Showboat and Rodney, so agents can demo what they’ve built - 10th February 2026
How StrongDM's AI team build serious software without even looking at the code - 7th February 2026

bruce-schneier 32 cryptanalysis 1 hashing 12 security 575 sha 2

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