TaggartMar 3

As of 2026-03-02, the state of the art in quantum decryption has cracked a:

  • 22-bit RSA key
  • 6-bit elliptic curve key

https://forklog.com/en/quantum-computer-cracks-tiny-cryptographic-key

The IBM QC that cracked the 6-bit key uses 133 qubits.

Some new research suggests that RSA-2048 could be cracked with as "few" as 100,000 qubits.

https://www.newscientist.com/article/2516404-breaking-encryption-with-a-quantum-computer-just-got-10-times-easier/

(Paywall-free)

Such a machine...is not feasible to build any time soon.

So when your CISO or a vendor starts going off about "post-quantum" security, feel free to use this to remind them that we still have SMB1 in some places and Telnet in others. Plenty of work to do around the house.

Quantum Computer Cracks ‘Tiny’ Cryptographic Key | ForkLog

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Show threadd@nny disc@ mc²
@mttaggart the claim does not appear to be backed by IBM or printed in any form besides that link to x so i would even further question the success of the 6-bit claim. afaiu the number 25 remains too large to factor. this is of course to bolster the claim that post-quantum lattice methods are poorly justified particularly if they require accepting reductions in e.g. resistance to adversarial randomness.
Mar 25 at 5:22pmWeb