NDLI: Synthesis of opacity-enforcing insertion functions that can be publicly known

Content Provider	IEEE Xplore Digital Library
Author	Wu, Yi-Chin Lafortune, Stephane
Copyright Year	2015
Description	Author affiliation: Department of EECS at the University of Michigan, USA (Wu, Yi-Chin; Lafortune, Stephane)
Abstract	Our prior work has studied the enforcement of opacity, a security property, using insertion functions that insert fictitious events at the output of the system, thereby preventing an intruder from inferring the given system's secret. The insertion functions previously considered enforce opacity under the assumption that the intruder does not know about the implementation of the insertion function. In this paper, we relax that assumption and consider a stronger class of insertion functions that enforce opacity whether or not the intruder knows the insertion function. This property is formally characterized as public-and-private enforceability, or PP-enforceability for short. A PP-enforcing insertion function is guaranteed to output only behaviors consistent with the non-secret behaviors of the system and thus it enforces opacity when the intruder has no knowledge of the insertion function (private case). Moreover, a PP-enforcing insertion function guarantees that the intruder can never infer the occurrence of the secret, even when the intruder knows the exact implementation of the insertion function (public case). We characterize the property of PP-enforceability and present an algorithm that provably synthesizes a PP-enforcing insertion function.
Starting Page	3506
Ending Page	3513
File Size	817983
Page Count	8
File Format	PDF
e-ISBN	9781479978861
DOI	10.1109/CDC.2015.7402762
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2015-12-15
Publisher Place	Japan
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Automata Observers Safety Computational modeling Standards Context Conferences
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
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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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