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Abstract
Cloud-based services are increasingly becoming extensively adopted by healthcare organizations. The past year alone has seen a rush of attention concerning the prospective of cloud computing with many vendors set to start moving healthcare-related applications across to cloud platforms. Healthcare clouds put forward new possibilities, such as straightforward and everywhere access to medical data, and opportunities for new business models. Still, they also put up with new risks and elevate challenges with respect to security and privacy. Traditional way is to provide security to PHR is Authentication to the data stored in the database. To make more secure, various Authentication techniques are used. In existing system two factors Authentication is performed based on the OTP which is randomly generated and sent through mobile phones as a Short Message Service (SMS). The proposed model describes about a Multifactor Authentication which includes Color Scheme, Graphical Password and One Time Password (OTP) is generated.