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سند علمی

Generic Construction of Privacy-Preserving Optimistic Fair Exchange Protocols

Qingwen Guo, Yuzhao Cui, Xiaomeng Zou, Qiong Huang

چکیده

Privacy-preserving optimistic fair exchange (POFE) is a kind of protocols which aim to solve the fairness problem in the exchange of digital signatures between two parties and in the meanwhile protect their privacy. In POFE, no one else including the semi-trusted third party in charge of arbitration can confirm an exchange even after resolving a dispute. In this paper we present a black-box construction of POFE based on a tag-based public key encryption scheme and a standard digital signature scheme. Our construction follows the ‘sign-then-encrypt’ paradigm, and is secure in the standard model. Our construction is generic and admits more instantiations of POFE.

اسناد مشابه

  • POFE: Privacy-Preserving Optimistic Fair Exchange of Digital Signatures

    سند علمی۲۰۱۳Qiong Huang, Duncan S. Wong, Willy Susilo

    How to sign an electronic contract online between two parties (say Alice and Bob) in a fair manner is an interesting problem, and has been studied for a long time. Optimistic Fair Exchange (OFE) is an efficient solution to this problem, in which a semi-trusted third party named a

  • P2OFE: Privacy-Preserving Optimistic Fair Exchange of Digital Signatures

    سند علمی۲۰۱۴CT-RSAQiong Huang, Duncan S. Wong, Willy Susilo

    How to sign an electronic contract online between two parties (say Alice and Bob) in a fair manner is an interesting problem, and has been studied for a long time. Optimistic Fair Exchange (OFE) is an efficient solution to this problem, in which a semi-trusted third party named a

  • A Generic Framework for Accountable Optimistic Fair Exchange Protocol

    مقاله‌ی دسترسی آزاد۲۰۱۹SymmetryJia-Ch’ngLoh, Swee-HuayHeng, Syh-YuanTan

  • Constructing Optimistic Fair Exchange Protocols from Committed Signatures

    سند علمی۲۰۰۳IACR Cryptology ePrint ArchiveHuafei Zhu

    In PODC 2003, Park et al. [32] first introduce a connection between fair exchange and sequential two-party multi-signature scheme and provide a novel method of constructing fair exchange protocol by distributing the computation of RSA signature. This approach avoids the design of

  • An optimistic fair exchange protocol and its security in the universal composability framework

    سند علمی۲۰۰۸IJACTYusuke Okada, Yoshifumi Manabe, Tatsuaki Okamoto

    Fair exchange protocols allow both or neither of two parties to obtain the other’s items, and this property is essential in e-commerce. In this paper, we construct an optimistic fair exchange protocol that is applicable to any digital signature by prescribing three forms of signa

  • Further Observations on Optimistic Fair Exchange Protocols in the Multi-user Setting

    سند علمی۲۰۱۰Public Key CryptographyXinyi Huang, Yi Mu, Willy Susilo, Wei Wu

    Recent research has shown that the single-user security of optimistic fair exchange cannot guarantee the multi-user security. This paper investigates the conditions under which the security of optimistic fair exchange in the single-user setting is preserved in the multi-user sett