ABSTRACT
Cloud Computing is a new technology which is directly connected with the internet which provide on demand self
service internet infrastructure where a customer can pay and use only what is needed. Cloud Computing all services
are managed by third party cloud service provider. Nowadays majority using static password to login into the system
or access the online accounts in cloud but never change the password which is not secure . Since Cloud computing is a
quite new subject, most of the cloud providers have not yet tighten up their security and still use insecure or
complicated login method. Static password thoroughly investigated and found out that it is not completing the cloud
computing security requirement. Proposed solution is One Time Password and One Day Password, OTP will get
expire after two minutes, if user again login will request and receive new password via email and ODP will get expire
after 24 hours and on request receive new password via email for new login session. OTP/ODP used with AES
encryption. This paper focuses the authentication and transmission encryption in cloud computing services.
Keywords: - Authentication, OTP/ODP, AES.