Adaptable key-policy attribute-based encryption with time interval
In this paper, we introduce a new cryptographic primitive: adaptable KP-ABE with time interval (KP-TIABE), which is an extension of key-policy attribute-based encryption (KP-ABE). Adaptable KP-TIABE specifies a decryption time interval for every ciphertext such that the ciphertext can only be decrypted within this time interval. To be more flexible, the decryption time interval associated with a ciphertext can be adjusted on demand by a semi-trusted server. We propose a formal model for adaptable KP-TIABE, present a concrete adaptable KP-TIABE scheme and prove its security under the security model.
Adaptability, Adaptable key-policy attribute-based encryption, Time specific
Computer Sciences | Information Security
Springer Verlag (Germany)
MA SIQI, ; LAI, Junzuo; DENG, Robert H.; and DING, Xuhua.
Adaptable key-policy attribute-based encryption with time interval. (2016). Soft Computing. 1-10. Research Collection School Of Information Systems.
Available at: http://ink.library.smu.edu.sg/sis_research/3590