University Publications

Cloud computing environment is a platform gives users in the field of information technology the opportunity for sharing data, information, resources, and services. Sensitive data on cloud needs to be protected from unauthorized users, for this reason security for cloud computing is very important to create secure communications, there are many methods used to protect data, one of them is Data Encryption Standard and Advanced Encryption Standard algorithms. In this paper, a comprehensive investigation on the performance has been compare between parallel computing of Advanced Encryption Standard and Data Encryption Standard and comparison between conventional and parallel computing environment as well as the number of workers (2, 3, and 4 workers). The encryption and decryption time were investigated for different text files sizes using MATLAB platform. The objective of this paper is to enhanced and developed modified encryption algorithm to achieve high level of security for the text files database for the examination office, reduced encryption and decryption time, and speed up the device processor. The obtained results show that the encryption and decryption time of parallel computing of Advanced Encryption Standard is less than the parallel computing of Data Encryption Standard by 52% and 58% respectively, when 4 workers were used for 581 bytes file size, and speed up by 3 times for parallel computing of Advanced Encryption Standard algorithm.