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Researchers claim faster forgery of 1024-bit RSA signatures
Original: Forging 1024-bit RSA signatures in nearly SNFS time [pdf]
A new cryptography paper describes a method for forging 1024-bit RSA signatures in time close to the special number field sieve, the fastest known approach for factoring such keys. The work suggests that 1024-bit RSA, long considered too expensive to break in practice, is closer to the reach of well-resourced attackers than previously assumed.
Why now: The paper raises fresh doubts about the security of legacy 1024-bit RSA keys still used in some systems.
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- Forging 1024-bit RSA signatures in nearly SNFS time [pdf] · int0x29 · 70
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