There's a new way to break RSA that's faster than anything we've seen before (arstechnica.com)

submitted 5 days ago by schnurrito@discuss.tchncs.de to c/cybersecurity@sh.itjust.works

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[-] Telorand@reddthat.com 4 points 5 days ago

“If this result holds up under peer review, it would indeed be a conceptual break-through,” Karsten Nohl, a cryptography expert and the head of innovation at Allurity, said in an interview.

Emphasis mine. It's also only problematic for blind-signature types.

The attack works only against blind-signature implementations of RSA. The overwhelming majority of RSA in use today provides PKCS or PSS padding, a format that adds data to the plaintext before it’s encrypted.

So even if it passes peer review, it's only an issue for older implementations.

this post was submitted on 25 Sep 2026

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