Security on “a lightweight authentication scheme with user untraceability”

Abstract

Many smart cards based authentication schemes need been recommended in the writing. Recently, Yeh suggested a lightweight authentication scheme with user untraceability and claimed that his/her scheme is able to combat several attacks. Though, in this paper, we substantiate that Yeh’s scheme will be still defenseless on different malicious attacks and also will be likewise unabated on give acceptable a few necessary security objectives.