[Resource Topic] 2016/1147: Cryptanalysis of a certificateless aggregate signature scheme

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Cryptanalysis of a certificateless aggregate signature scheme

Authors: Nasrollah Pakniat, Mahnaz Noroozi


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.

ePrint: https://eprint.iacr.org/2016/1147

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