On the Soundness of Restricted Universal Designated Verifier Signatures and Dedicated Signatures
On the Soundness of Restricted Universal Designated Verifier Signatures and Dedicated Signatures
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DOI：
10.1007/978-3-540-75496-1_12
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发表时间：
2007-10
期刊：
影响因子：
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通讯作者：
Fabien Laguillaumie;Damien Vergnaud
中科院分区：
文献类型：
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作者：
Fabien Laguillaumie;Damien Vergnaud
In 2006, Huang, Susilo, Mu and Zhang proposed the concept ofrestricted universal designated verifier signatureswhile Klonowski, Kubiak, Kutylowski and Lauks proposed independently thedualprimitive ofdedicated signatures. In both notions, a signature holder can convince one or more verifiers of his knowledge of a digital signature, but cannot exploit this knowledge without beingpunishedfor that. In this paper, we state that a signature holder may generically provide a proof that it has a certain signature without being punished and that consequently both primitives cannot fulfill their alleged security goals. To demonstrate the feasibility of this claim, we propose the first non-interactive universal designated verifier proof of the possession of an Elgamal or a DSA signature in the random oracle model. This construction may be of independent interest.
