[ExI] On reducing the cost of breaking RSA-2048 to 100, 000 physical qubits

John Clark johnkclark at gmail.com
Tue Feb 17 20:11:11 UTC 2026


*Reducing the cost of breaking RSA-2048 to 100,000 physical qubits
<https://scottaaronson.blog/>*

*"Somewhat ironically, elliptic curve crypto [the type that bitcoin uses]
is likely to fall to quantum computers a bit before RSA and Diffie-Hellman
will fall, because ECC’s “better security” (against classical attacks, that
is) led people to use 256-bit keys rather than 2,048-bit keys, and Shor’s
algorithm mostly just cares about the key size."*

*John K Clark    See what's on my new list at  Extropolis
<https://groups.google.com/g/extropolis>*
';,
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