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arXiv · 2311.08813

Comments on "Dynamic Consensus Committee-Based for Secure Data Sharing With Authorized Multi-Receiver Searchable Encryption"

Zi-Yuan Liu·Raylin Tso
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Abstract

Recently, Yang et al. introduced an efficient searchable encryption scheme titled "Dynamic Consensus Committee-Based for Secure Data Sharing With Authorized Multi-Receiver Searchable Encryption (DCC-SE)," published in IEEE Transactions on Information Forensics and Security (DOI: 10.1109/TIFS.2023.3305183). According to the authors, DCC-SE meets various security requirements, especially the keyword trapdoor indistinguishability against chosen keyword attacks (KT-IND-CKA). In this letter, however, we reveal a significant vulnerability of DCC-SE: any users involved in the system can execute attacks against KT-IND-CKA security. This flaw potentially results in the unintended disclosure of sensitive keyword information related to the documents. We present a detailed cryptanalysis on DCC-SE. In addition, to address this vulnerability, we discuss the root cause and identify a flaw in the security proof of DCC-SE. Subsequently, we provide a solution that effectively addresses this concern without significantly increasing computational overhead.

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Zi-Yuan Liu, Raylin Tso. 2023-11-15. Comments on "Dynamic Consensus Committee-Based for Secure Data Sharing With Authorized Multi-Receiver Searchable Encryption". https://arxiv.org/abs/2311.08813

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