Linkability of some blind signature schemes

Heng, Swee-Huay and Yap, Wun-She and Khoo, Khoongming (2007) Linkability of some blind signature schemes. In: Information Security Theory and Practices. Smart Cards, Mobile and Ubiquitous Computing Systems. Lecture Notes in Computer Science (4462). Springer Berlin Heidelberg, pp. 80-89. ISBN 978-3-540-72353-0

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Unforgeability and blindness are two important properties of blind signature. The latter means that after interacting with various users, the signer is unable to link a valid message-signature pair. In ICCSA 2006, Zhang et al. showed that a signer in an identity-based blind signature scheme proposed by Huang et al. is able to link a valid messagesignature pair obtained by some-user. They also presented an improved scheme to overcome this flaw. In ICICIC 2006, Zhang and Zou showed that the identity-based blind signature scheme proposed by Zhang and Kim also suffered from the similar linkability attack. In this paper, we first show that the so-called linkability can be shown for Zhang et al. scheme as well. We then point out that the linkability attack against the Huang et al. scheme and the Zhang-Kim scheme is invalid.

Item Type: Book Section
Subjects: T Technology > T Technology (General)
Q Science > QA Mathematics > QA75.5-76.95 Electronic computers. Computer science
Divisions: Faculty of Engineering and Technology (FET)
Depositing User: Ms Suzilawati Abu Samah
Date Deposited: 04 Oct 2011 00:48
Last Modified: 15 Nov 2013 07:52

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