Wrappers – A Mechanism to Support State-Based Authorization in Web Applications

  • Martin S Olivier
  • Ehud Gudes
Part of the IFIP International Federation for Information Processing book series (IFIPAICT, volume 73)


The first premise of this paper is that security should ultimately be associated with an application because application semantics have a direct influence on proper protection. The second premise is that applications are generally too complex to be trusted to implement security as specified by the given security policy. These problems are aggravated if the application operates over normal time and space constraints: The best example of such applications is workflow systems where various actors — possibly from multiple organisations — interact on long transactions to complete a given task.

The solution presented in this paper is an approach referred to as wrappers: a wrapper is a simple program that has enough knowledge about a specific application’s potential states and the actions that are permissible in each state. Using this knowledge, it is able to filter requests that should not reach an application at a given point. It is important to note that wrappers are not intended to subsume the security functionality of an application, but serve as an additional check.

The paper presents its concepts in a World-wide Web environment that renders it immediately useful.


Security Policy Authentication Server Application Security Login Request Database Security 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.


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Copyright information

© Kluwer Academic Publishers 2002

Authors and Affiliations

  • Martin S Olivier
    • 1
  • Ehud Gudes
    • 2
  1. 1.Computer ScienceRand Afrikaans UniversityAuckland ParkSouth Africa
  2. 2.Mathematics and Computer ScienceBen-Gurion UniversityBeer-ShevaIsrael

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