NDLI: An Improved Designated-Verifier Proxy Signature Scheme

Content Provider	IEEE Xplore Digital Library
Author	Jianhong Zhang
Copyright Year	2007
Description	Author affiliation: Coll. of Sci., North China Univ. of Technol., Beijing (Jianhong Zhang)
Abstract	As a special signature, proxy signature allows a entity called original signer to delegate his signing capability to another entity to produce signature on behalf of him. By combining the ideas of proxy signatures and designated-verifier signatures, G.L.Wang et.al. proposed a strong designated-verifier proxy signature scheme (for short DVP) and claimed that the security of their scheme was based on the computational Diffie- Hellman assumption. Unfortunately, in the paper, we give security analysis of Wang et.al's strong designated-verifier proxy signature scheme and show that their scheme is forgeable. Namely, an adversary can forge a DVP signature on arbitrary message m without the knowledge of the proxy secret key $x_{P}$ or the designated verifier's secret key $x_{C}-$ At the same time, we give two attacks on the Strong designated-verifier proxy signature scheme. Finally, we give an improved scheme to overcome the above forgery attacks, and show the scheme to be secure in random oracle model .
Starting Page	77
Ending Page	82
File Size	143930
Page Count	6
File Format	PDF
ISBN	0769529275
DOI	10.1109/NAS.2007.12
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2007-07-29
Publisher Place	China
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	security analysis Laboratories Educational institutions Mobile communication Voltage control Distributed computing designated-verifier proxy signature digital signature Mobile agents Information security Grid computing Forgery Digital signatures
Content Type	Text
Resource Type	Article

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