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Attribute-based optimistic fair exchange: how to restrict brokers with policies

Journal Article


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Abstract


  • Optimistic fair exchange (OFE) is a kind of protocols for solving the fair

    exchange problem between two participants with the help of an arbitrator

    that only needs to be involved when dispute occurs. As far as we are concerned,

    all previous work on OFE does not take into account user's attributes

    such as nationality and age. We identify that in some applications, the attributes

    could play an important role in the exchange to take place, and OFE

    may not be suitable to these scenarios. We introduce a new notion named

    attribute-based optimistic fair exchange (ABOFE) to solve the fair exchange

    problem in the attribute-based setting. We formalize the notion of ABOFE

    and present a security model in the multi-user setting under the chosen-key

    attack. We also present a generic construction of ABOFE from existing cryptographic

    primitives and prove that our proposal is secure with respect to

    our denition in the standard model. An instantiation in the standard model

    is discussed.

UOW Authors


  •   Wang, Yang (external author)
  •   Au, Man Ho Allen (external author)
  •   Susilo, Willy

Publication Date


  • 2014

Citation


  • Wang, Y., Au, M. & Susilo, W. (2014). Attribute-based optimistic fair exchange: how to restrict brokers with policies. Theoretical Computer Science, 527 83-96.

Scopus Eid


  • 2-s2.0-84895921832

Ro Full-text Url


  • http://ro.uow.edu.au/cgi/viewcontent.cgi?article=3265&context=eispapers

Ro Metadata Url


  • http://ro.uow.edu.au/eispapers/2256

Number Of Pages


  • 13

Start Page


  • 83

End Page


  • 96

Volume


  • 527

Abstract


  • Optimistic fair exchange (OFE) is a kind of protocols for solving the fair

    exchange problem between two participants with the help of an arbitrator

    that only needs to be involved when dispute occurs. As far as we are concerned,

    all previous work on OFE does not take into account user's attributes

    such as nationality and age. We identify that in some applications, the attributes

    could play an important role in the exchange to take place, and OFE

    may not be suitable to these scenarios. We introduce a new notion named

    attribute-based optimistic fair exchange (ABOFE) to solve the fair exchange

    problem in the attribute-based setting. We formalize the notion of ABOFE

    and present a security model in the multi-user setting under the chosen-key

    attack. We also present a generic construction of ABOFE from existing cryptographic

    primitives and prove that our proposal is secure with respect to

    our denition in the standard model. An instantiation in the standard model

    is discussed.

UOW Authors


  •   Wang, Yang (external author)
  •   Au, Man Ho Allen (external author)
  •   Susilo, Willy

Publication Date


  • 2014

Citation


  • Wang, Y., Au, M. & Susilo, W. (2014). Attribute-based optimistic fair exchange: how to restrict brokers with policies. Theoretical Computer Science, 527 83-96.

Scopus Eid


  • 2-s2.0-84895921832

Ro Full-text Url


  • http://ro.uow.edu.au/cgi/viewcontent.cgi?article=3265&context=eispapers

Ro Metadata Url


  • http://ro.uow.edu.au/eispapers/2256

Number Of Pages


  • 13

Start Page


  • 83

End Page


  • 96

Volume


  • 527