Security Analysis of Liu-Zhang-Deng Digital Signature Scheme

https://doi.org/10.1016/j.procs.2014.05.451Get rights and content
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Abstract

In 2010, Liu et al. 1 proposed an improvement of Liu-Li digital signature scheme without one-way hash function and messageredundancy. In this paper, we demonstrate that Liu et al.’s scheme exist ℓ-wDH problem. Using Baby-Step Giant Step, we cancompute

(mod p − 1) in o
polynomial time, it is therefore insecure and can not against forgery attack.

Keywords

ℓ-wDH problem
Algebraic structure defects
Forgery attack ;

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