Paper 2026/1019
On the Security of Public Key Authenticated Encryption with Keyword Search with Sender-independent Search Complexity
, Kanazawa University, National Institute of Advanced Industrial Science and TechnologyAbstract
Li et al. (IEEE Transactions on Dependable and Secure Computing 2026) proposed proxy-free public key authenticated encryption with ciphertext update and keyword search (proxy-free PAUKS). In this short note, we demonstrate that keyword information is leaked from updated ciphertexts. We also demonstrate that our attack is effective against the PAUKS scheme proposed by Li et al. (IEEE Transactions on Information Forensics and Security 2023).
Note: The main content of this paper appears IEICE transactions on fundamentals of electronics communications and computer sciences, with the title: Security Analysis on "Proxy-Free Public-Key Authenticated Updatable and Searchable Encryption for Cloud Storage''.
Metadata
- Available format(s)
-
PDF
- Category
- Cryptographic protocols
- Publication info
- Published elsewhere. Minor revision. IEICE Transactions on Fundamentals of Electronics, Communications and Computer Sciences
- Keywords
- Searchable EncryptionSecurity Analysis
- Contact author(s)
- k-emura @ se kanazawa-u ac jp
- History
- 2026-08-31: revised
- 2026-05-21: received
- See all versions
- Short URL
- https://ia.cr/2026/1019
- License
-
CC BY
BibTeX
@misc{cryptoeprint:2026/1019,
author = {Takeshi Yoshida and Keita Emura},
title = {On the Security of Public Key Authenticated Encryption with Keyword Search with Sender-independent Search Complexity},
howpublished = {Cryptology {ePrint} Archive, Paper 2026/1019},
year = {2026},
url = {https://eprint.iacr.org/2026/1019}
}
