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The Security and Scalability aware Key based Encryption Scheme (SS-KES) is proposed in this research effort to provide efficient security for healthcare and environmental data while also allowing for great scalability. This approach encrypts health data and medical prescriptions and is used by patients and health-care institutions. Encrypting data is accomplished by the use of a double encryption mechanism, as well as cypher text ids or classes. The primary key, known as the master key, is held by the key holder and is used to extract secret keys for each class. The extracted key is a merged key that is used as a single key during the decryption process. It is determined by the amount of data and the cypher employed.