||X-flow - A secure workflow system
||Jensen, Martin Strandbygaard
||Sharp, Robin (Department of Informatics and Mathematical Modeling, Technical University of Denmark, DTU, DK-2800 Kgs. Lyngby, Denmark)
||Technical University of Denmark, DTU, DK-2800 Kgs. Lyngby, Denmark
||This masters thesis describes a model and prototype implementation for a secure workflow system, that facilitates creation of documents according to a workflow description, where the result of each activity is digitally signed.
The requirements of a document workflow is analyzed in the context of a workflow with 10100 participants, and the security aspects of document creation as part of a workflow are investigated.
The practical barriers and opportunities of using digital signatures as a replacement of handwritten signatures, thereby allowing workflow support of processes with formal requirements for documentation, are also analyzed.
Based on the security and workflow requirements of such a system a supporting data model is developed. The model is implemented as an XML Schema specification and makes use of the XML Schema language to allow model checking to be performed in an XML parser.
Finally, a prototype application supporting this data model is implemented according to the specified model requirements.
||Department of Informatics and Mathematical Modeling, Technical University of Denmark, DTU : DK-2800 Kgs. Lyngby, Denmark
Creation date: 2006-10-06
Update date: 2012-12-18