Soft Computing

, Volume 21, Issue 20, pp 6191–6200 | Cite as

Adaptable key-policy attribute-based encryption with time interval

Methodologies and Application

Abstract

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.

Keywords

Adaptable key-policy attribute-based encryption Time specific Adaptability 

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Copyright information

© Springer-Verlag Berlin Heidelberg 2016

Authors and Affiliations

  • Siqi Ma
    • 1
  • Junzuo Lai
    • 2
  • Robert H. Deng
    • 1
  • Xuhua Ding
    • 1
  1. 1.Singapore Management UniversitySingaporeSingapore
  2. 2.Jinan UniversityGuangzhouChina

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