New Attack Against RSA

· Bruce Schneier · Sept. 28, 2026, 11:05 a.m.
Summary
The blog post discusses a new implementation of a forgery attack against RSA, pointing out that while the attack may seem novel, it is based on research from 2007 and has practical limitations such as working only on signature formats without padding. The author highlights the attack’s subexponential speed compared to traditional factoring methods, but notes that it requires significant computing resources to execute.
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