Journal on Communications

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Attribute-based authenticated key agreement protocol supporting revocation

  

  • Online:2014-05-25 Published:2014-05-15

Abstract: Revocation is a crucial issue for the practical use of attribute-based authenticated key agreement (ABAKA) protocols. A new ABAKA protocol supporting revocation was proposed. The protocol based on Waters’ ciphertext-policy attribute-based encryption and Boneh-Gentry-Waters’ broadcast encryption was constructed. In the protocol, revocation can be done immediately without affecting any non-revoked users and does not require users to update keys periodically by interacting with the key authority. Compared with the existing ABAKA protocols, the protocol is more efficient in communication complexity. The protocol is provably secure in the standard model and modified ABCK model. The protocol can also provide weak perfect forward secrecy and key compromise impersonation resilience.

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