Yafang Yang;Lei Zhang;Yunlei Zhao;Kim-Kwang Raymond Choo;Yan Zhang
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Rebuttal to “On the Unforgeability of ‘Privacy-Preserving Aggregation-Authentication Scheme for Safety Warning System in Fog-Cloud Based VANET”’
Lin recently claimed that the privacy-preserving aggregation authentication scheme (PPAAS) based on a certificateless aggregation signcryption scheme (CASS) proposed in our paper (IEEE Transactions on Information Forensics and Security, vol.17, pp.317-331, Jan.2022) suffers from a forgery attack from type II adversary. In this paper, we show that this attack is not valid since the adversary outputs a trivial forged ciphertext. Specifically, the adversary has the master secret key and randomly selects the secret values of all users.
期刊介绍:
The IEEE Transactions on Information Forensics and Security covers the sciences, technologies, and applications relating to information forensics, information security, biometrics, surveillance and systems applications that incorporate these features