ISSN : 1796-203X
Volume : 1    Issue : 2    Date : May 2006

Improved Double Auction Protocol based on a Hybrid Trust Model
JungHoon Ha, Jianying Zhou and SangJae Moon
Page(s): 33-41
Full Text:
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Recently, Wang et al. proposed a set of double auction protocols with full privacy protection based
ondistributed ElGamal encryption. Unfortunately, their protocols are expensive in computation, and
are not robust in dealing with system malfunction or user misbehavior. In this paper, we propose a
secure and practical double auction protocols based on a hybrid trust model, where computation
load is distributed to buyers and sellers while a semi-trusted manager handles the registration
phase. A prominent feature of the proposed protocol is its high robustness, achieved by using a
publicly verifiable secret sharing scheme with threshold access structure.

Index Terms
Double auction, security, trust model