Designing and implementation of a new security model

S. H. Von Solms, N. G. Edwards

Research output: Contribution to journalArticlepeer-review

2 Citations (Scopus)


The original protection graph rewriting grammar used to simulate the different operations of the Take/Grant model is reviewed. The productions of the PGR-grammar is then expanded, by adding a new context which is based on the different security classes found in the Bell and LaPadula model.

Original languageEnglish
Pages (from-to)139-149
Number of pages11
JournalInternational Journal of Computer Mathematics
Issue number2-4
Publication statusPublished - Jan 1989


  • Bell and LaPadula model
  • Take/Grant model
  • contexts
  • protection graph
  • security classes

ASJC Scopus subject areas

  • Computer Science Applications
  • Computational Theory and Mathematics
  • Applied Mathematics


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