Research note: On the security of fair blind signature scheme using oblivious transfer

Authors:
Narn-Yih Lee;Tzonelih Hwang
Affiliations:
Department of Applied Foreign Language, Nan-Tai Institute of Technology, Tainan, Taiwan;Institute of Information Engineering, National Cheng-Kung University, Tainan, Taiwan
Venue:
Computer Communications
Year:
1999

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Abstract

At EuroCrypt'95, Stadler et al. proposed the concept of fair blind signatures to prevent the misuse of blind signature schemes by the criminals. Two types of fair signature schemes were discussed and three schemes were developed in their paper. This article shall show that the second fair blind signature scheme is in fact unfair under some cases.