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並列摘要


A proxy signature scheme, introduced by Mambo, Usuda and Okamoto, allows a designated person to sign on behalf of an original signer. Blind signatures, introduced by D. Chaum allow a user to get a signature from a signer without revealing any information about message or its signature. A proxy blind signatures, first time introduced by Tan et al in 2002, combines all the security properties of both proxy signatures and of blind signatures. In this paper we have proposed a proxy blind signature scheme using conjugacy search problem over braid groups. Our proxy blind signature scheme is partial protected proxy signature.

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