Author : K. S. Wagh, Swapnil Chaudhari, Anita Deshmukh and Prajakta Khandave

Cloud computing is a utilization of computer resources that are available on demand and accessed via a network. A cloud can be a private cloud or a public cloud. A public cloud mainly sells services to anyone on the Internet. A private cloud is actually a proprietary network or a data center that supplies hosted services to a limited number of people. There is a growing trend of using cloud environments for ever growing storage and data processing needs. But still, adopting a cloud computing paradigm may have positive as well as negative effect on data security. Thus we focus on unique feature of the cloud which poses many new security challenges that need to be clearly understood and resolved. So this paper will explore data security of public cloud in cloud computing by implementing digital signature and encryption with public key cryptography.

Keywords: Cryptography, Encryption, Decryption, Digital Signature, Message Digest.

Article published in International Journal of Current  Engineering  and Technology, Vol.4,No.3 (June- 2014)