Strong designated verifier signature in a multi-user setting
Gorantla, Choudary, Boyd, Colin, & Gonzalez Nieto, Juan Manuel (2009) Strong designated verifier signature in a multi-user setting. In Seventh Australasian Information Security Conference (AISC 2009), Jan 20-23, 2009, Wellington, New Zealand.
The security of strong designated verifier (SDV) signature schemes has thus far been analyzed only in a two-user setting. We observe that security in a two-user setting does not necessarily imply the same in a multi-user setting for SDV signatures. Moreover, we show that existing security notions do not adequately model the security of SDV signatures even in a two-user setting. We then propose revised notions of security in a multi-user setting and show that no existing scheme satisfies these notions. A new SDV signature scheme is then presented and proven secure under the revised notions in the standard model. For the purpose of constructing the SDV signature scheme, we propose a one-pass key establishment protocol in the standard model, which is of independent interest in itself.
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|Item Type:||Conference Paper|
|Keywords:||Strong designated verifier signatures, multi-user setting, standard model, one-pass key establishment|
|Subjects:||Australian and New Zealand Standard Research Classification > INFORMATION AND COMPUTING SCIENCES (080000) > DATA FORMAT (080400) > Data Encryption (080402)
Australian and New Zealand Standard Research Classification > INFORMATION AND COMPUTING SCIENCES (080000) > COMPUTER SOFTWARE (080300) > Computer System Security (080303)
|Divisions:||Past > QUT Faculties & Divisions > Faculty of Science and Technology
Past > Institutes > Information Security Institute
|Copyright Owner:||Copyright 2009 Australian Computer Society, Inc.|
|Deposited On:||10 Jul 2009 02:53|
|Last Modified:||26 May 2016 06:37|
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