ABSTRACT
This paper deals with one of the most critical computing problems which is Cryptography
application, it is one of the problem that needs high computing power resources.
This paper introduces Symmetric Key Cryptography using DES (Data Encryption Standard)
algorithm and employs a computing Grid for dealing with this problem. It presents a Grid for
solving this problem that has been implemented by Alchemi which is an open source project
developed at the University of Melbourne, which provides middleware for creating an
enterprise grid computing environment by harnessing windows machines. The grid has been
tested and results have been analyzed, there was an increase in performance over the single
processor, but the performance improvement is limited by the I/O and communication
overhead.