• Cost-Effective Authentic and Anonymous Data Sharing with Forward Security

• Journal: IEEE Transactions on Computers

• Authors: Xinyi Huang, J. K. Liu, Shaohua Tang, Yang Xiang, Kaitai Liang, Li Xu and Jianying Zhou

• DOI information:10.1109/TC.2014.2315619

• Date to publish online: April 3th,2014

• Paper Published Online; Early Access PDF download; Export BIB citation;

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Data sharing has never been easier with the advances of cloud computing, and an accurate analysis on the shared data provides an array of benefits to both the society and individuals. Data sharing with a large number of participants must take into account several issues, including efficiency, data integrity and privacy of data owner. Ring signature is a promising candidate to construct an anonymous and authentic data sharing system. It allows a data owner to anonymously authenticate his data which can be put into the cloud for storage or analysis purpose. Yet the costly certificate verification in the traditional public key infrastructure (PKI) setting becomes a bottleneck for this solution to be scalable. Identity-based (ID-based) ring signature, which eliminates the process of certificate verification, can be used instead. In this paper, we further enhance the security of ID-based ring signature by providing forward security: If a secret key of any user has been compromised, all previous generated signatures that include this user still remain valid. This property is especially important to any large scale data sharing system, as it is impossible to ask all data owners to reauthenticate their data even if a secret key of one single user has been compromised. We provide a concrete and efficient instantiation of our scheme, prove its security and provide an implementation to show its practicality.

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Published in:Computers, IEEE Transactions on  (Volume:PP ,  Issue: 99 )

Page(s):1ISSN :0018-9340

Digital Object Identifier :10.1109/TC.2014.2315619

Date of Publication :03 四月 2014

Sponsored by :IEEE Computer Society

Publisher:IEEE

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Paper published online: http://ieeexplore.ieee.org/xpl/articleDetails.jsp?arnumber=6782632 

Download the PDF file of this paper: http://ieeexplore.ieee.org/stamp/stamp.jsp?tp=&arnumber=6782632 

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