Paper 2017/1100

IR-CP-ABE: Identity Revocable Ciphertext-Policy Attribute-Based Encryption for Flexible Secure Group-Based Communication

Weijia Wang, Zhijie Wang, Bing Li, Qiuxiang Dong, and Dijiang Huang


Ciphertext-Policy Attribute-Based Encryp- tion (CP-ABE) is an access control mechanism over encrypted data and well suited for secure group-based communication. However, it also suffers from the fol- lowing problem, i.e., it is impossible to build all de- sired groups. For example, if two group members have exactly the same attributes, how to construct a group including only one of the two members? Obviously, at- tributes alone cannot distinguish these two members, therefore existing CP-ABE solutions do not work. To address this issue, in this paper, we present a new CP-ABE scheme (called IR-CP-ABE) that incorporates an Identity-based Revocation capability. With IR-CP-ABE, an access policy will be constructed by not only group members’ attributes but also their identities. To build a group, first, build a candidate group based on all de- sired group members’ attributes; second, remove unde- sired members by revoking their identities. By evaluat- ing the security and efficiency of a proposed construc- tion, we show that the IR-CP-ABE scheme is secure and efficient for practical applications.

Available format(s)
Public-key cryptography
Publication info
Preprint. MINOR revision.
Group-based Secure CommunicationID RevocationSecurityEfficiency
Contact author(s)
qiuxiang dong @ asu edu
2017-11-29: revised
2017-11-15: received
See all versions
Short URL
Creative Commons Attribution


      author = {Weijia Wang and Zhijie Wang and Bing Li and Qiuxiang Dong and Dijiang Huang},
      title = {IR-CP-ABE: Identity Revocable Ciphertext-Policy Attribute-Based Encryption for Flexible Secure Group-Based Communication},
      howpublished = {Cryptology ePrint Archive, Paper 2017/1100},
      year = {2017},
      note = {\url{}},
      url = {}
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