Cryptology ePrint Archive: Report 2016/1147

Cryptanalysis of a certificateless aggregate signature scheme

Nasrollah Pakniat, Mahnaz Noroozi

Abstract: Recently, Nie et al. proposed a certificateless aggregate signature scheme. In the standard security model considered in certificateless cryptography, we are dealing with two types of adversaries. In this paper, we show that Nie et al.'s scheme is insecure against the adversary of the first type. In other words, although they claimed that their proposed scheme is existentially unforgeable against adaptive chosen message attack considering the adversaries in certificateless settings, we prove that such a forgery can be done.

Category / Keywords: public-key cryptography /

Original Publication (with minor differences): 9th National Conference of Command, Control, Communication and Computers & Intelligence (C4I)

Date: received 13 Dec 2016

Contact author: pakniat at irandoc ac ir

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Version: 20161221:151446 (All versions of this report)

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