NDLI: Efficient Chosen Ciphertext Secure Threshold Public-Key Encryption with Forward Security

Content Provider	IEEE Xplore Digital Library
Author	Xiujie Zhang Chunxiang Xu Wenzheng Zhang
Copyright Year	2013
Description	Author affiliation: Sch. of Comput. Sci. & Eng., Univ. of Electron. Sci. & Technol. of China, Chengdu, China (Xiujie Zhang; Chunxiang Xu) \|\| 30th Res. Inst., Sci. & Technol. on Commun. Security Lab., China Electron. Technol. Group Corp., Chengdu, China (Wenzheng Zhang)
Abstract	Threshold Public Key Encryption allows a set of servers to decrypt a cipher text if a given threshold of authorized servers cooperate. Forward security allows one to mitigate the damage caused by exposure of secret keys. Forward-secure public encryptions are used to the threshold setting, this model guarantees that even if an adversary have broken into more than t distinct servers(for some i), messages encrypted during all time periods prior to i remain secret. In this paper, we present the first probably secure (non-interactive) forward-secure threshold public-key encryption scheme against chosen-cipher text attacks in the random oracle model. The encryption and update operations are very efficient when compared with the scheme presented by Libert et al. A formal definition, as well as a detailed analysis of the security performance of this scheme, is presented. The security of this scheme is based on the Computational Bilinear Diffie Hellman assumption, which leads to a unique approach to prove security in the random oracle model. Furthermore, in our model, the servers update their keys individually and asynchronously, without any communication between them.
Starting Page	407
Ending Page	413
File Size	218428
Page Count	7
File Format	PDF
e-ISBN	9781479921416
DOI	10.1109/EIDWT.2013.76
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2013-09-09
Publisher Place	China
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Computational modeling Public key Chosen Ciphertext Security Games Forward Security Threshold Public-Key Encryption Encryption Servers Provable Secure Random Oracle Model
Content Type	Text
Resource Type	Article

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1	Ministry of Education (GoI), Department of Higher Education	Sanctioning Authority	https://www.education.gov.in/ict-initiatives
2	Indian Institute of Technology Kharagpur	Host Institute of the Project: The host institute of the project is responsible for providing infrastructure support and hosting the project	https://www.iitkgp.ac.in
3	National Digital Library of India Office, Indian Institute of Technology Kharagpur	The administrative and infrastructural headquarters of the project	Dr. B. Sutradhar bsutra@ndl.gov.in
4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
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