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Mobile Information Systems
Volume 8, Issue 3, Pages 255-274
http://dx.doi.org/10.3233/MIS-2012-0142

Flexible Multi-Authority Attribute-Based Signature Schemes for Expressive Policy

Dan Cao, Baokang Zhao, Xiaofeng Wang, and Jinshu Su

School of Computer, National University of Defense Technology, Changsha, Hunan, China

Received 18 June 2012; Accepted 18 June 2012

Copyright © 2012 Hindawi Publishing Corporation. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

Attribute-based signature (ABS) is a new cryptographic primitive, in which a signer can sign a message with his attributes, and the verifier can only known whether the signer owns attributes satisfying his policy. Moreover, the signature cannot be forged by any user not having attributes satisfying the policy. ABS has many applications, such as anonymous authentication, and attribute-based messaging systems. But many applications may require a user obtaining attributes from different authorities, which calls for multi-authority ABS schemes.