1. Fuzzy identity-based encryption;Sahai,2005
2. Attribute-based encryption for fine-grained access control of encrypted data;Goyal,2006
3. Ciphertext-policy attribute-based encryption;Bethencourt,2007
4. Attribute-based encryption with non-monotonic access structures;Ostrovsky,2007
5. Bounded ciphertext policy attribute based encryption;Goyal,2008