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Title: An efficient strong designated verifier proxy signature scheme for electronic commerce
Authors: HAN-YU LIN
Contributors: 國立臺灣海洋大學:資訊工程學系
Keywords: public key system
designated verifier
digital signature
discrete logarithms
Date: 2012
Issue Date: 2017-01-17T03:14:25Z
Abstract: Abstract: A strong designated verifier signature (SDVS) scheme only allows the designated
verifier to validate the signer’s signature for ensuring the confidentiality. At the same
time, the designated verifier can not transfer the signature to any third party, since he can
also generate another computationally indistinguishable SDVS, which is referred to as
non-transferability. A proxy signature scheme is a special type of digital signature
scheme, which enables an authorized proxy signer to create a valid proxy signature on
behalf of the original one. The resulted proxy signature is publicly verifiable by anyone.
In this paper, we elaborate on the merits of SDVS schemes and proxy signature schemes
to propose an efficient strong designated verifier proxy signature (SDVPS) scheme in
which only the designated verifier can be convinced of the proxy signer’s identity. The
proposed scheme has crucial benefits in the organizational operation and the electronic
commerce. Compared with related schemes, ours has not only shorter signature length,
but also lower computational costs. Moreover, the security requirement of unforgeability
against existential forgery under adaptive chosen-message attacks (EF-CMA) is proved
in the random oracle model.
Relation: 28(4)
Appears in Collections:[Department of Computer Science and Engineering] Periodical Articles

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