Lukusa, John Mulopwe <br/><br/>
PERFORMANCE ANALYSIS OF A HYBRID SECURITY  ALGORITHM FOR SECURE CLOUD ENVIRONMENT / 
JOHN MULOPWE LUKUSA; SUPERVISOR: ASST. PROF. DR. FATMA TANSU HOCANIN 
 - ix, 83 sheets;  31 cm.  1 CD-ROM 
<br/><br/>Thesis (MSc) - Cyprus International University. Institute of Graduate Studies and Research Information Technologies Department 
<br/><br/>Includes bibliography (sheets 60-61) 
<br/><br/> ABSTRACT<br/>In today's rapidly growing internet and network applications, encryption algorithms <br/>play a critical role in ensuring information security. Encryption algorithms serve a key <br/>role in guaranteeing information security in such applications. An internet-based <br/>dynamic application and storage method, known as cloud computing, needs high <br/>reliability, scalability and autonomy to support accessibility everywhere. With the <br/>widespread use of cloud computing in our daily routines, protecting data has become <br/>a major concern, particularly for non-technical users. The effectiveness of two <br/>standard symmetric key encryption algorithms, AES and Blowfish, analyzed and <br/>compared in terms of their throughput, power consumption, and encryption speed. The <br/>simulation results show that AES outperforms Blowfish when considering security <br/>flaws, however, it requires more processing resources. Hence, an efficient hybrid <br/>security algorithm is proposed in order to secure the data in a cloud environment by <br/>taking the advantageous of both approach in an encryption system for better utilization.<br/>The performance analysis shows that the proposed hybrid approach ends up as an ideal <br/>approach to encrypt and decode files with a large block size with longer keys and to<br/>defend against Man in the Middle (MitM) attacks.<br/>Keywords: AES, Algorithm, Encryption, BLOWFISH, Performance Analysis, <br/> 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Algorithms --Dissertations, Academic<br/>Performance--Dissertations, Academic