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INDOCRYPT
2004
Springer

New ID-Based Threshold Signature Scheme from Bilinear Pairings

12 years 5 months ago
New ID-Based Threshold Signature Scheme from Bilinear Pairings
ID-based public key systems allow the user to use his/her identity as the public key, which can simplify key management procedure compared with CA-based public key systems. However, there is an inherent disadvantage in such systems: the problem of private key escrow, i.e., the “trusted” Private Key Generator (PKG) can easily impersonate any user at any time without being detected. Although the problem of escrowing the private key may be reduced by distributing the trust onto multiple centers, it will decrease the efficiency of the systems. Chen et al. first proposed a novel ID-based signature scheme without trusted PKG from bilinear pairings [10], i.e., there is only one PKG who is not assumed to be honest in their scheme. However, the signature scheme cannot be extended to a threshold one. In this paper we propose another ID-based signature scheme without trusted PKG from bilinear pairings. Moreover, we propose an ID-based threshold signature scheme without trusted PKG, which sim...
Xiaofeng Chen, Fangguo Zhang, Divyan M. Konidala,
Added 02 Jul 2010
Updated 02 Jul 2010
Type Conference
Year 2004
Where INDOCRYPT
Authors Xiaofeng Chen, Fangguo Zhang, Divyan M. Konidala, Kwangjo Kim
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