This project presents a novel Multi-message Ciphertext Policy Attribute-Based Encryption (MCP-ABE) technique, and employs the MCP-ABE to design an access control scheme for sharing scalable media based on data consumers’ attributes

(e.g., age, nationality, or gender) rather than an explicit list of the

consumers’ names. The scheme is efficient and flexible because

MCP-ABE allows a content provider to specify an access policy

and encrypt multiple messages within one ciphertext such that

only the users whose attributes satisfy the access policy can decrypt

the ciphertext. Moreover, the paper shows how to support

resource-limited mobile devices by offloading computational

intensive operations to cloud servers while without compromising

data privacy