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2006•Journal of Xidian UniversityRequires access

An efficient ID-based threshold signature

Xiaojun Lu

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Abstract

A new ID-based threshold signature scheme is proposed from bilinear pairings,based on our improved ID-based signautre scheme.In our ID-based threshold signature scheme,the dishonest Private Key Generator(PKG) can not impersonate any user at any time.We show that it is secure against existential forgeable on adaptively chosen message and ID attack under the random oracle.Compared with the previous scheme,it is shorter and more efficient with the same security.

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What this paper is about

A new ID-based threshold signature scheme is proposed from bilinear pairings,based on our improved ID-based signautre scheme.In our ID-based threshold signature scheme,the dishonest Private Key Generator(PKG) can not impersonate any user at any time.We show that it is secure against existential forgeable on adaptively chosen message and ID attack under the random oracle.Compared with the previous scheme,it is shorter and more efficient with the same security.

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Available abstract

A new ID-based threshold signature scheme is proposed from bilinear pairings,based on our improved ID-based signautre scheme.In our ID-based threshold signature scheme,the dishonest Private Key Generator(PKG) can not impersonate any user at any time.We show that it is secure against existential forgeable on adaptively chosen message and ID attack under the random oracle.Compared with the previous scheme,it is shorter and more efficient with the same security.

Key concepts: Random oracle, Computer science, Signature (topology), Scheme (mathematics), Schnorr signature, Bilinear interpolation, Merkle signature scheme, Public-key cryptography

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