ISSN 2348-1196 (print) International Journal of Computer Science and Information Technology Research ISSN 2348-120X (online) Vol. 8, Issue 1, pp: (38-43), Month: January - March 2020, Available at: www.researchpublish.com
DEPLOYMENT OF HYBRID SYMMETRIC ENCRYPTION ALGORITHM IN CLOUD DATA SECURITY AND PRIVACY 1
Dawson john kwao, 2Dr. Thomas Yeboah, 3Michael Osei Boakye 1
Kwadaso College of Agriculture, Kumasi, Ghana 2 Christ Apostolic University, 3 NJUST
Kwaodawson1@yahoo.com, thomyebs24@gmail.com, Michael.ob@njust.edu.cn
Abstract: In this paper, a hybrid algorithm has been proposed, which is based on RSA algorithm and Delta encoding technique with the aim of improving security issues and also bring about a total reduction in execution time in message encryption and decryption in cloud computing environment. Security was enhanced by increasing the level of encryption and decryption of messages stored in the cloud at two levels thus making it heterogeneous. The reduction in the total execution time was observed after comparing Key generation time, Encryption time and the Decryption time of the traditional RSA algorithm and the proposed hybrid algorithm based on different exponent sizes of 256, 512, 1024 and 2048. Also, common attacks of the traditional RSA algorithm have been considered to find out the resistance of the proposed hybrid algorithm against these possible attacks. Keywords: RSA, Delta Encoding, Heterogeneous.
I.
INTRODUCTION
Cloud computing as used in information technology environment refers to the delivering of services which has been hosted over internet. This system enables clients from their offices to access services such as Software-as-a-Service (SaaS), Infrastructure-as-a-service (IaaS) and Platform-as-a-service (PaaS) (Rouse, 2016). With the introduction of cloud computing, issues of security and data privacy has become more important due to the sharing vulnerabilities associated with the documents involved by attackers both from the inside and outside of organizations. In cloud computing environment, security should be provided for both known and unexpected intrusion that can corrupt and delete essential data by employing appropriate cryptographic technologies. RSA encryption technology is one of many popularly used public-key cryptosystem schemes which utilizes integer factorization problem in the encryption and decryption process. RSA is an asymmetric cryptosystem, which implies that the scheme is made up of double arithmetical transformations: an encryption function E, and a decryption function D (Rivest et al, 1983). The study has expanded the level of encryption to two, thus making the encryption process heterogeneous.
II.
RELATED LITERATURE
As per Dharini (2014), cloud computing is a rising innovation which utilizes shared data, assets, programming and facilities to client on a pay as you utilize base. For secure communication over public network to have the capacity to secure information a strategy for encryption is required. As a result the proposed encryption strategy for securing information transmission is by joining RSA and Magic Square to give an extra security to the cryptosystem. According to Sudhansu (2014), the most appropriate approach to encrypting the cloud, is through the combination of RSA algorithm and MD5 hashing. In this mechanism RSA algorithm is used to secure communication (Kaliski, 2003), data scramble and unscrambling purposes while MD5 algorithm is aimed at providing digital signature as well as for protecting data that are in tabular forms against illegitimate clients (Rivest , 1992).
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