NDLI: Protection against covert storage and timing channels

Content Provider	IEEE Xplore Digital Library
Author	Melliar-Smith, P.M. Moser, L.E.
Copyright Year	1991
Description	Author affiliation: Dept. of Electr. & Comput. Eng., California Univ., Santa Barbara, CA, USA (Melliar-Smith, P.M.; Moser, L.E.)
Abstract	Existing technology is quite successful at preventing direct unauthorized communication in multilevel secure computer systems, but is almost completely ineffective at protecting such systems against covert storage and timing channels. In a covert channel, one process transmits secret information by modulating its rate of use of a shared resource, while another program detects that modulation by monitoring the responsiveness of the resource. The proposed protection technique involves screening all programs in a system by a data dependency analysis procedure that determines whether the results of those programs depend on the relative timing of operations within the system. Programs containing such timing dependencies are denied access to the system until certified by other means. The approach is reasonably inexpensive and completely rigorous and, when strictly applied, precludes all communication over covert storage and timing channels.<>
Starting Page	209
Ending Page	214
File Size	410367
Page Count	6
File Format	PDF
ISBN	0818622156
DOI	10.1109/CSFW.1991.151588
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	1991-06-18
Publisher Place	USA
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Protection Timing Secure storage Buffer storage Computer security Information security Modulation coding Communication system security Computerized monitoring Delay
Content Type	Text
Resource Type	Article

Sl.	Authority	Responsibilities	Communication Details
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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