New Forgery Attack on Chang et al.'s signature scheme
Li Kou, Ming Jin · 2013
Chang proposed one new digital signature scheme with message recovery and claimed the scheme is secure without using one-way hash function and message recovery.Two forgery attacks have been proposed to show that attackers who have a valid signature can forge signatures that can be verified validly on any uncontrolled messages by Fu.This paper proposes one new forgery attack scheme, which means that Chang et al.'s signature scheme is not secure.