1. Fuzzy identity based encryption;Sahai,2005
2. Attribute-based encryption for fine-grained access control of encrypted data;Goyal,2006
3. Attribute-based encryption with non- monotonic access structures;Ostrovsky,2007
4. Ciphertext-policy attribute-based encryption;Bethencourt,2007
5. Decentralizing attribute-based encryption;Lewko,2011