Secure Data Group Sharing and Dissemination with Attribute and Time Conditions in Public Cloud
Paper Synopsis: Data dissemination: Dissemination takes on the theory of the traditional view of communication, which involves a sender and receiver. The traditional communication view point is broken down into a sender sending information, and receiver collecting the information processing it and sending information back, like a telephone line. Example: Alice (owner, share) รจ Bob (view, share(with policies)) ( disseminator , re-encrypting the ciphertext) Existing system: Attribute-based encryption Attribute-based encryption (ABE) is one of new cryptographic mechanisms used in cloud to reach flexible and fine-grained secure data group sharing [4]. Especially, ciphertext-policy ABE (CP-ABE) allows data owners to encrypt data with an access policy such that only users whose attributes satisfy the access policy can decrypt the data [5]. The proxy re-encryption (PRE) scheme [7] in a manner could achieve effi...
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