• Dr. G. RamaSubba Reddy
• S. Santha Kumari
• M. Roshini

Cloud computing is the technology for providing the computing services such as servers, storage, database, and networking etc over the internet on pay per use pattern. It is more popular in today’s era as it helps in cost reduction associated with computing. Although it is one of the most prominent technology for such kind of services, the limitation of the technology is the “Data Security and Integrity” in the environment. Cloud computing is one of the latest technology trend of the IT trade for business area. Cloud computing security converged into a demanding topic in the sector of information technology and computer science research programs. Regardless of the fact that cloud computing offers great advantages to the end users, there are several challenging issues that are mandatory to be addressed. It offers an on demand and scalable access to a shared pool of resources hosted in a data centre at providers’ site. The cloud computing is a way to deliver IT services on demand and pay per usage, and it can stores huge amount of data. But until now many companies don’t wish to use cloud computing technology due to concerns about data secrecy and protection. So we need cryptographic algorithms that can provide a highly secure communication, data integrity and authentication, along with the non-repudiation communication and data confidentiality. It reduces the overheads of up-front investments and financial risks for the end-user. In This paper discusses about symmetric key cryptographic algorithms DES,3DES,AES,RC and Asymmetric key cryptographic algorithms RSA,ECC,Diffie-Hellman,DSS.

Cloud computing, confidentiality, cryptographic algorithms, data integrity, DES, AES, RSA, EC.

"CRYPTOGRAPHIC ALGORITHMS ARE USED IN CLOUD COMPUTING FOR SECURITY: A STUDY", International Journal of Emerging Technologies and Innovative Research (www.jetir.org), ISSN:2349-5162, Vol.6, Issue 2, page no.1033-1039, February-2019, Available :http://www.jetir.org/papers/JETIRAB06191.pdf

"CRYPTOGRAPHIC ALGORITHMS ARE USED IN CLOUD COMPUTING FOR SECURITY: A STUDY", International Journal of Emerging Technologies and Innovative Research (www.jetir.org | UGC and issn Approved), ISSN:2349-5162, Vol.6, Issue 2, page no. pp1033-1039, February-2019, Available at : http://www.jetir.org/papers/JETIRAB06191.pdf