SNFS

A new cryptography paper describes forging 1024-bit RSA signatures in time close to the special number field sieve, a faster attack method previously thought impractical at this key size. The result, published on the IACR eprint archive, suggests 1024-bit RSA keys offer less security margin than assumed, and readers are debating whether older systems still relying on them need urgent upgrades to 2048-bit or larger keys.