ID-Based Ambiguous Optimistic Fair Exchange in the Standard Model

被引：0

作者：

Qi M. ^{[1
]}

Chen M. ^{[1
]}

机构：

[1] School of Mathematics and Computer Science, Yichun University, Yichun, 336000, Jiangxi

来源：

Tien Tzu Hsueh Pao/Acta Electronica Sinica | 2020年 / 48卷 / 08期

关键词：

Fairness; Identity-based cryptography; Non-interactive witness indistinguishable proof; Optimistic fair exchange; Signature exchange; Signer ambiguity; Standard model;

D O I：

10.3969/j.issn.0372-2112.2020.08.009

中图分类号：

学科分类号：

摘要：

A generic ambiguous optimistic fair exchange(AOFE)scheme, a variant of OFE, is proposed by Huang et al.The AOFE scheme prevents signature verifiers from convincing anybody about the authorship of a partial signature generated by the signer.However, the AOFE scheme cannot be directly applied to an actual user environment.A generic AOFE scheme and an instantiation of the generic construction in an identity-based user environment were proposed in this paper.In the generic construction of identity-based AOFE(ID-AOFE), the tag-based encryption and zero-knowledge proof algorithms in Huang et al.'s AOFE was removed and the non-interactive witness indistinguishable proof algorithms extracting the hided witness via keys was employed.Furthermore, we summarized and redefined the security of the ID-AOFE scheme.Then, an ID-AOFE security model was defined based on the Huang et al.'s AOFE security model and the selective identity security model.Under the selective identity security model of ID-AOFE, the fairness of our scheme is reduced to the securities of several classical cryptographic primitives.In addition, this paper discussed the message interaction model of the ID-AOFE scheme, and analyzed the mechanism of dispute resolution. © 2020, Chinese Institute of Electronics. All right reserved.

引用

页码：1516 / 1527

页数：11

共 30 条

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