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cloudflare / circl

CIRCL: Cloudflare Interoperable Reusable Cryptographic Library
http://blog.cloudflare.com/introducing-circl
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does KyberSlash affect this verison of Kyber? #472

Closed david415 closed 5 months ago

david415 commented 5 months ago

i know your Kyber is NIST round 3 but is it vulnerable to kyberslash1 and kyberslash2?

http://kyberslash.cr.yp.to/ http://kyberslash.cr.yp.to/faq.html http://kyberslash.cr.yp.to/libraries.html

https://www.bleepingcomputer.com/news/security/kyberslash-attacks-put-quantum-encryption-projects-at-risk/

bwesterb commented 5 months ago

Circl ≤1.3.6 was vulnerable to Kyberslash2, but not to Kyberslash1. It's patched in 1.3.7. We'll have a security advisory out soon. It's good to note that Kyberslash does not impact ephemeral use, such as in TLS.

david415 commented 5 months ago

@bwesterb thank you for the timely reply!

bwesterb commented 5 months ago

The advisory is out.