Maintaining Integrity Within Mobile Self Protecting Objects

  • Wesley Brandi
  • Martin S. Olivier
Part of the IFIP International Federation for Information Processing book series (IFIPAICT, volume 72)


This paper examines the integrity issues involved when a Self Protecting Object (SPO) is moved to a site in a federated database which will eventually disconnect and become unreachable for some time. The SPO model guarantees that the custom security policy of a site participating in a federated database will be implemented and respected when the object it shares is accessed by others in the federated database, regardless of the objects location.

We introduce the Mobile Self Protecting Object (MSPO) and propose an architecture within which it will operate. Having looked at integrity issues which may arise we propose a way in which to maintain integrity within Mobile Self Protecting Objects. In particular, we propose a way in which to deal with mobile transactions which require authorisation. We discuss how MPSOs can be updated whilst in a mobile environment as well as how to ensure an MSPO has maintained its integrity upon reentering the federated database from a mobile site.


Mobile self protecting object federated database integrity security 


  1. [BAD95]
    B. R. Badrinath, Shirish Hemant Phatak, An Architecture for Mobile Databases, Rutgers University, Department of Computer Science, Technical report #DCS-TR-351 1995Google Scholar
  2. [CFM95]
    Silvana Castano, Mariagrazia Fugini, Giancarlo Martella, Pierangela Samarati, Database Security, Addison-Wesley & ACM Press 1995Google Scholar
  3. [CP85]
    Stefano Ceri and Guiseppe Pelagatti, Distributed databases-principles and systems, McGraw-Hill 1985Google Scholar
  4. [OLI96]
    Martin S Olivier, Self-Protecting Objects in a Secure Federated Database, In Spooner, SA Demurjian and JE Dobson (eds), Database Security IX: Status and Prospects, 27–42, Chapman & Hall, 1996Google Scholar
  5. [OLI97]
    Martin S Olivier, Secure Mobile Nodes in Federated Databases-base, South African Computer Journal, 20, 11–17, 1997Google Scholar
  6. [SL90]
    Amit P. Sheth, James A. Larson ACM Computing Surveys, Federated Database Systems for Managing Distributed, Heterogeneous, and Autonomous Databases, Vol. 22, No. 3, September 1990Google Scholar
  7. [TIP00]
    Kimberly Tipton, Fortune 1000 Executives Forecast Dramatic Increase in Need for Mobile Communications, AVT Corporation News Release, 2000

Copyright information

© IFIP International Federation for Information Processing 2001

Authors and Affiliations

  • Wesley Brandi
    • 1
  • Martin S. Olivier
    • 1
  1. 1.Department of Computer ScienceRand Afrikaans UniversityJohannesburgSouth Africa

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