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Please use this identifier to cite or link to this item: http://ntour.ntou.edu.tw:8080/ir/handle/987654321/27889

Title: Threshold multi-proxy multi-signature scheme based on bilinear pairings
Authors: Tzong-Sun Wu;Han-Yu Lin;Ming-Je Shiu
Contributors: NTOU:Department of Computer Science and Engineering
Keywords: digital signature;threshold signature;proxy signature;bilinear pairings;elliptic curve
Date: 2007-10
Issue Date: 2011-10-21T02:34:21Z
Publisher: WSEAS Transactions on Information Science and Applications
Abstract: Abstract:In a conventional proxy signature scheme, a delegated person called the proxy signer can sign a document on behalf of the original signer such that any verifier can validate the proxy signature. When applied to group oriented operations, proxy signature schemes can be categorized into several forms according to the predefined signing policies. Consider the flexibility of delegation; threshold multi-proxy multi-signature (TMPMS) schemes might be the best solution. In a (t1/n1-t2/n2) TMPMS scheme, any t1 out of n1 original signers can authorize n2 members as the proxy signers, such that any t2 out of n2 proxy signers can produce a valid proxy signature on behalf of the original group. The security of previously proposed schemes is primarily based on the hardness of inverting either the discrete logarithms or the factorization. Based on bilinear pairings, a new TMPMS scheme is proposed in this paper. The proposed scheme has the merit that it does not require the trusted third party to distribute the secret. Further, it also preserves the anonymity of the actual original and the proxy signers, i.e., only the original and the proxy groups are identified.
Relation: 4(11), pp.1393-1399
URI: http://ntour.ntou.edu.tw/handle/987654321/27889
Appears in Collections:[資訊工程學系] 期刊論文

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