Antoine Joux

Cryptographer, co-author of original 2007 algorithm

Appears in 1 story

Stories

New RSA attack forges signatures without factoring the key

New Capabilities

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 2 hours ago