Cloud computing provides a wide range of platform for storage of data by the servers. Data sharing has become more significant to provide productive benefits. Confidentiality is one of the major causes for not storing the medical data in the untrusted cloud. The health records that been stored in cloud may have access towards third party users. In the existing system, any users can access others medical data in a group without other users permission, it may leads to illegal activity. In order to assure the controlled access to the medical records, a cryptographic Attribute Based Encryption technique for Encryption and MASS (Mobile Authentic Secure Sum Up) protocol is established, where unique key will be generated for all the owners. To upload/download the data, each user (doctors and patients) needs to use their unique key which will be sent to their mail. By this proposed scheme, a high degree of patient’s privacy is guaranteed. © 2016, International Journal of Pharmacy and Technology. All rights reserved.