Bas Westerbaan
@bwesterb
Software-engineering mathematician. Post-quantum cryptography @cloudflare
ID:23593
https://bas.westerbaan.name 26-11-2006 21:43:49
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Since the release of Chrome 124 on April 17, we've been tracking post-quantum encrypted requests as a share of Cloudflare global HTTPS request traffic. Now you can too, in the new Post-Quantum Encryption Adoption graph in the Adoption & Usage section of CloudflareRadar.
Halfway through the return journey and I have something concrete to say about it: sam-jaques.appspot.com/static/files/5…
I didn't make it past step 4, but I tried to give some intuition on complex gaussians and Karst waves
(ICYMI others discovered a critical flaw; see the updated eprint)
Tracking down some TIMECOP alerts led to a 2021 gcc patch from ARM (gcc.gnu.org/git/?p=gcc.git…) turning (-x)>>31 into a bool, often breaking constant-time code. Can often work around with (-x)>>30, and asm is safer anyway, but for portable fallbacks we need security-aware compilers.