NDLI: Improvement of a Convertible Undeniable Partially Blind Signature Scheme

Content Provider	IEEE Xplore Digital Library
Author	Song Han Chang, E. Dillon, T. Jie Wang
Copyright Year	2006
Description	Author affiliation: Sch. of Inf. Syst., Curtin Univ. of Technol., Perth, WA (Song Han; Chang, E.)
Abstract	Undeniable signatures are the digital signatures that should be verified with the help of the signer. A signer may disavow a genuine document, if the signature is only verifiable with the aid of the signer under the condition that the signer is not honest. Undeniable signatures solve this problem by adding a new feature called the disavowal protocol in addition to the normal components of signature and verification. Disavowal protocol is able to prevent a dishonest signer from disavowing a valid signature. In some situations, an undeniable signature should be converted into a normal digital signature in order that the signature can be universally verified. Blind signatures the digital signatures that help a user to get a signature on a message without revealing the content of the message to a signer. For the blind signatures, if the signer is able to make an agreement with the user, then the underlying signer may include some common information that is known to the user, then such signatures are partially blind signatures. Convertible undeniable partially blind signatures are of the features of undeniable signatures, blind signatures, convertible undeniable signatures, and partially blind signatures. Recently, a convertible undeniable partially blind signature scheme was presented. In this paper, we first analyze a security flaw of the convertible undeniable partially blind signature scheme. To address the security flaw, we present an improvement on the disavowal protocol. The improved scheme can prevent the signer from either proving that a given valid signature as invalid, or cheating the verifier
Starting Page	875
Ending Page	882
File Size	204431
Page Count	8
File Format	PDF
ISBN	0769524664
ISSN	1550445X
DOI	10.1109/AINA.2006.198
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2006-04-18
Publisher Place	Austria
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Protocols Australia Digital signatures Security Voting Information systems Embedded software Information technology Protection Convertible undeniable signature. Partially blind signature Undeniable signature Blind signature Security protocol
Content Type	Text
Resource Type	Article

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