Antoine Joux

Cryptographer, co-author of original 2007 algorithm

Appears in 1 story

Born: May 12, 1967, Amiens

Education: École polytechnique, ENSTA Paris

Last updated Nov 1, 2026

Stories

New RSA attack forges signatures without factoring the key

New Capabilities

As of September 2026: Original algorithm designer; current work validated by 2026 implementation

RSA's security rests on a simple bet: factoring a 1024-bit number takes 500,000 to 1 million CPU core-years. A research team just went around the bet, forging 1024-bit RSA signatures in 1,380 core-years without factoring the key at all.

Updated Sep 26