Volume 7 Number 12 (Dec. 2012)
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JCP 2012 Vol.7(12): 2899-2905 ISSN: 1796-203X
doi: 10.4304/jcp.7.12.2899-2905

Secure Attribute-based Threshold Signature without a Trusted Central Authority

Sun Changxia1, 2, Ma Wenping1
1Key Laboratory of Network and Information of Education, Xidian University, Xi’an, China
2Information and Management Sciences School, Henan Agricultural University, Zhengzhou, China


Abstract—Currently, in most attribute-based cryptosystem, the central authority that distributes private keys for attributes assigned to the user must be trusted unconditionally otherwise the systems will soon be collapsed. To solve the problem we propose a new attribute- based threshold signature scheme without a trusted central authority. When the number of user’s attributes reaches the threshold he can sign validly. Additionally, the central authority can be distrusted. We prove that the scheme is existentially unforgeable under selective attributes and adaptive chosen-message attack and is secure against collusion attack.

Index Terms—Identity-based, Attribute-based, central authority ,CDH problem, collusion attack.

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Cite: Sun Changxia, Ma Wenping, "Secure Attribute-based Threshold Signature without a Trusted Central Authority," Journal of Computers vol. 7, no. 12, pp. 2899-2905, 2012.

General Information

ISSN: 1796-203X
Abbreviated Title: J.Comput.
Frequency: Bimonthly
Editor-in-Chief: Prof. Liansheng Tan
Executive Editor: Ms. Nina Lee
Abstracting/ Indexing: DBLP, EBSCO,  ProQuest, INSPEC, ULRICH's Periodicals Directory, WorldCat, CNKI,etc
E-mail: jcp@iap.org
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