Cryptography28 September 2026
RSA Forgery Attack: Faster Than Factoring, But Not Against Padded Signatures
A newly implemented attack on RSA signatures is making headlines as a way to 'break RSA' without factoring. The underlying idea dates from 2007, and it only threatens unpadded signatures, which is not how RSA is deployed in practice.
rsacryptographydigital-signatures
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Cryptography & PKI30 June 2026
Short-Sleeve RSA: How Zero-Block Prime Structure Exposed 603 Private Keys in the Wild
Trail of Bits and the badkeys project have uncovered a new class of factorable RSA key — one defined by evenly spaced zero-bit blocks in its prime factors — and found hundreds already deployed in real TLS, SSH, and PGP infrastructure.
rsacryptographypki
4 min readRead