Cryptology ePrint Archive: Report 2012/125

Short and Efficient Expressive Attribute-Based Signature in the Standard Model

Aijun Ge and Cheng Chen and Chuangui Ma and Zhenfeng Zhang

Abstract: Attribute-based signature allows the signer to announce his endorsement using a signing policy without revealing the identity, and only the signer whose attributes satisfy the signing policy can generate a valid signature. Attribute-based signature can provide flexible access control policy and has many application in real scenarios requiring both privacy and authentication. In this paper, we present a new construction of efficient attribute-based signature schemes based on Waters' ciphertext-policy attribute-based encryption schemes. Our scheme is existentially unforgeable in the standard model for the selective adversary and can achieve perfect privacy. Compared with other attribute-based signature schemes supporting the general access structure, our scheme has the shortest signature size and the best computation efficiency.

Category / Keywords: public-key cryptography / attribute-based signature, ciphertext policy, existential unforgeability, general access structure

Date: received 6 Mar 2012, withdrawn 20 Jun 2012

Contact author: geaijun2011 at gmail com

Available format(s): (-- withdrawn --)

Version: 20120620:233240 (All versions of this report)

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