Paper 2020/749 Original: eprint.iacr.org/2020/749 ↗
Insecurity of the Public Key Encryption with Filtered Equality Test Proposed by Huang et al.
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.
Metadata
- Available format(s)
PDF- Category
- Public-key cryptography
- Publication info
- Preprint.
- History
- 2020-06-21: last updated
- 2020-06-21: published
- Short URL
- https://ia.cr/2020/749
- License
- https://creativecommons.org/licenses/by/4.0/
BibTeX
@misc{cryptoeprint:2020/749,
author = {Hyung Tae Lee and San Ling and Jae Hong Seo and Huaxiong Wang},
title = {Insecurity of the Public Key Encryption with Filtered Equality Test Proposed by Huang et al.},
howpublished = {Cryptology {ePrint} Archive, Paper 2020/749},
year = {2020},
url = {https://eprint.iacr.org/2020/749}
}