From Collisions to Chosen-Prefix Collisions - Application to Full SHA-1

Paper 2019/459 From Collisions to Chosen-Prefix Collisions - Application to Full SHA-1 Gaëtan Leurent and Thomas Peyrin Abstract A chosen-prefix collision attack is a stronger variant of a collision attack, where an arbitrary pair of challenge prefixes are turned into a collision. Chosen-prefix collisions are usually significantly harder to produce than (identical-prefix) collisions, but the pract

[jovi0608]

あーぁ、SHA-1のChosen-Prefix衝突攻撃がおよそ1000万円以下程度のコストで可能になったとの論文。これでSHA-1証明書は完全に終わりです。