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dc.contributor.advisorIrvine, Cynthia E.
dc.contributor.authorAgacayak, Cihan.
dc.date.accessioned2013-05-08T20:44:01Z
dc.date.available2013-05-08T20:44:01Z
dc.date.issued2000-03
dc.identifier.urihttp://hdl.handle.net/10945/32946
dc.description.abstractThis study contributes to the realization of a high assurance Multilevel Secure Local Area Network. The system consists of a Trusted Computing Base (TCB) that acts as a server base. Clients are COTS workstations and software, augmented with a hardware-based TCB Extension (TCBE). This work concentrates on object reuse control on the client, which is one of the security services to be provided by the TCBE. Object reuse mechanisms are designed to assure that sensitive information does not persist across sessions or session level changes. We analyzed 29 chips on the PC motherboard. We proposed and evaluated possible solutions for object reuse control of four storage areas: main memory, AGP memory, cache and Real Time Clock (RTC) memory. The feasibility of one proposed solution was demonstrated. We found that main memory can be cleared by slowing its refresh rate. It was determined that AGP memory cannot be read out by devices on the PCI and ISA bus. The Intel INVD command can be used to clear cache. RTC memory can be accessed and its integrity checked by TCBE software. This study establishes a foundation for object reuse control efforts targeting COTS PC products manufactured by various vendors.en_US
dc.description.urihttp://archive.org/details/analysisofmechan1094532946
dc.format.extentxiv, 113 p.;28 cm.en_US
dc.language.isoen_US
dc.publisherMonterey, California. Naval Postgraduate Schoolen_US
dc.subject.lcshNAen_US
dc.titleAnalysis of mechanisms for TCBE control of object reuse in clientsen_US
dc.title.alternativeNAen_US
dc.typeThesisen_US
dc.contributor.secondreaderNA
dc.contributor.departmentElectrical Engineering
dc.subject.authorNAen_US
dc.description.funderNAen_US
dc.description.recognitionNAen_US
dc.description.serviceTurkish Navy author.en_US
etd.thesisdegree.nameM.S. in Electrical Engineeringen_US
etd.thesisdegree.levelMastersen_US
etd.thesisdegree.disciplineElectrical Engineeringen_US
etd.thesisdegree.grantorNaval Postgraduate Schoolen_US
dc.description.distributionstatementApproved for public release; distribution is unlimited.


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