Department of Computer and Information Sciences Towson University Towson MD 21252 USA Authors Hamdan Alabsi Ramesh K Karne Alexander Wijesinha Rasha Almajed Bharat Rawal ID: 807765
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Presented by Dr. Ramesh K. Karne Department of Computer and Information Sciences Towson UniversityTowson, MD 21252, USA(Authors: Hamdan Alabsi, Ramesh K. Karne, Alexander Wijesinha, Rasha Almajed, Bharat Rawal, Faris Almansour)rkarne@towson.eduhttp://www.baremachinecomputing.com
A Novel SQLite-based Bare PC Email Server
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Started in 2001 Motivated by complexity and obsolescence Frustrated by too many environments Initially funded by NSF grants Over 50 publications and 16 doctoral dissertations Started from scratch and built all BMC code and over a dozen complex applications History
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ExokernelBare Metal LinuxNano and Micro Kernels Lean kernels Sandboxing Palacio and KittenIO-Lite BMC is at the extreme end of the OS spectrumRelated Work
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A computer application(s) run on a bare computing device (such as a PC) The computing device consists of CPU, Memory, User interfaces such as (Keyboard, Mouse, Monitor, Network card) Application(s) are self contained, self managed The box containing the computing device is known as a bare machine The concept is applicable to any computing deviceIt is two paradigms, Bare Machine and BMC programming What is a Bare Machine Computing Paradigm (BMC)?
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A Bare Machine is: OwnerlessValueless, no valuable resources in the bare box Uses detachable or network storage Bootable, loadable and controllable by user application(s) Application(s) are stored on a detachable storage device such as a flash drive There is nothing to damage in the bare machine, other than physical vandalism Super secure, ultimate security for application(s) A bare machine can be placed at any place, accessed by anyone without ownership A bare machine application is stable, not prone to obsolescence, contains code that does not depend on other computing environments A bare machine application(s) are totally user controlled and closed systems.BMC Characteristics
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It is a closed email system (restricted BMC users)Implemented using a SQLite database Limited number of users or for a special enterprise Only bare PC authorized users can use the system Unsolicited emails are ignored A Webserver centric approach Super secure or Ultimate Security for emails Accessible through the Web No TLS at this point What is a bare PC Email System?
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Fig 1. System Architecture
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Fig 2a. Task interface
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Fig 2b. Task-based SQLite query processing
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Fig 3a. TCP flow
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Fig 3b. Mail operations.
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Fig 4. Functions, file names and operations.
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Fig 5. Inserting results in the PHP file.
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Fig. 6. Menu screen
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Fig 7. Compose mail page.
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Fig 8. Query results page.
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Fig 9. Query entry page.
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Broad knowledge for a programmer Device driver knowledge System and application programming Writing BMC code Debugging bare code (with experience) Integrating different componentsIntegrating with existing bare PC applications Design Challenges
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Further Research Add TLS Develop a pilot program for BMC users Add robust error control and reliability
Test for security vulnerabilities
Compare security with other email systems
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Questions?