Open Access
ARTICLE
A Trust Value Sharing Scheme in Heterogeneous Identity Federation Topologies
Ning Liu1, Fan Yang1, *, Xi Xiong1, 2, Yan Chang1, Shibin Zhang1
1 School of Cybersecurity, Chengdu University of Information Technology, Chengdu, China.
2 The School of Computer Science and Engineering, Nanyang Technological University, Singapore.
* Corresponding Author: Yang Fan. Email: .
Computers, Materials & Continua 2020, 65(2), 1559-1570. https://doi.org/10.32604/cmc.2020.010562
Received 10 March 2020; Accepted 09 June 2020; Issue published 20 August 2020
Abstract
Recent developments in heterogeneous identity federation systems have
heightened the need for the related trust management system. The trust management
system evaluates, manages, and shares users’ trust values. The service provider (SP)
members of the federation system rely on users’ trust values to determine which type and
quality of service will be provided to the users. While identity federation systems have
the potential to help federated users save time and energy and improve service experience,
the benefits also come with significant privacy risks. So far, there has been little
discussion about the privacy protection of users in heterogeneous identity federation
systems. In this paper, we propose a trust value sharing scheme based on a proxy ring
signature for the trust management system in heterogeneous identity federation
topologies. The ring signature schemes can ensure the validity of the data and hide the
original signer, thereby protecting privacy. Moreover, no group manager participating in
the ring signature, which naturally matches with our decentralized heterogeneous identity
federation topologies. The proxy signature can reduce the workload of the private key
owner. The proposed scheme shortens the calculation time for verifying the signature and
then reduces the overall time consumption in the process of trust sharing. Our studies
prove that the proposed scheme is privacy-preserving, efficient, and effective.
Keywords
Cite This Article
N. Liu, F. Yang, X. Xiong, Y. Chang and S. Zhang, "A trust value sharing scheme in heterogeneous identity federation topologies,"
Computers, Materials & Continua, vol. 65, no.2, pp. 1559–1570, 2020. https://doi.org/10.32604/cmc.2020.010562