Welcome to the resource topic for 2020/749
Title:
Insecurity of the Public Key Encryption with Filtered Equality Test Proposed by Huang et al.
Authors: Hyung Tae Lee, San Ling, Jae Hong Seo, Huaxiong Wang
Abstract:Recently, Huang et al. proposed a concept of public key encryption with filtered equality test (PKE-FET) that allows a tester who has a warrant for the selected message set to check equality of messages in ciphertexts that belong to that set (Journal of Computer and System Sciences, 2017). They also presented an instantiation of the PKE-FET that was asserted to achieve the indistinguishability against adaptive chosen ciphertext attacks (IND-CCA2) in the standard model. In this note, we show that Huang et al.’s instantiation does not achieve the IND-CCA2 security by presenting a simple adaptive chosen ciphertext attack.
ePrint: https://eprint.iacr.org/2020/749
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