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IJACT
2008
102views more  IJACT 2008»
13 years 3 months ago
An optimistic fair exchange protocol and its security in the universal composability framework
: 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 optimi...
Yusuke Okada, Yoshifumi Manabe, Tatsuaki Okamoto
ESORICS
2010
Springer
13 years 4 months ago
Optimistic Fair Exchange with Multiple Arbiters
Fair exchange is one of the most fundamental problems in secure distributed computation. Alice has something that Bob wants, and Bob has something that Alice wants. A fair exchang...
Alptekin Küpçü, Anna Lysyanskaya
ASIACRYPT
2008
Springer
13 years 5 months ago
Ambiguous Optimistic Fair Exchange
Optimistic fair exchange (OFE) is a protocol for solving the problem of exchanging items or services in a fair manner between two parties, a signer and a verifier, with the help o...
Qiong Huang, Guomin Yang, Duncan S. Wong, Willy Su...
SSS
2009
Springer
13 years 8 months ago
Optimistic Fair Exchange Using Trusted Devices
Efficiency of optimistic fair exchange using trusted devices is studied. Pfitzmann, Schunter and Waidner (PODC 1998) have shown that four messages in the main sub-protocol is op...
Mohammad Torabi Dashti
PKC
2007
Springer
111views Cryptology» more  PKC 2007»
13 years 9 months ago
Optimistic Fair Exchange in a Multi-user Setting
: This paper addresses the security of optimistic fair exchange in a multi-user setting. While the security of public key encryption and public key signature schemes in a single-us...
Yevgeniy Dodis, Pil Joong Lee, Dae Hyun Yum
CTRSA
2010
Springer
149views Cryptology» more  CTRSA 2010»
13 years 10 months ago
Usable Optimistic Fair Exchange
Fairly exchanging digital content is an everyday problem. It has been shown that fair exchange cannot be done without a trusted third party (called the Arbiter). Yet, even with a ...
Alptekin Küpçü, Anna Lysyanskaya