An Algorithm of (n, t)-Threshold Proxy Signature with an Arbitrator

Modelirovanie i Analiz Informacionnyh Sistem

E. A. Tolyupa¹ 

[1] P.G. Demidov Yaroslavl State University;

关键词: proxy signature;    threshold proxy signature;    secret sharing;   

DOI  :  10.18255/1818-1015-2013-4-55-70

来源: DOAJ

【 摘 要 】

The paper presents an (n, t)-threshold proxy signature scheme with an Arbitrator which enables an original signer to delegate the signature authority to sign a message on behalf of the original signer to proxy group P of n members. The original signer distributes the proxy key among the proxy group members in such a way that not less then t proxy signers and the Arbitrator can cooperatively sign messages on behalf of the original signer. Thus, for signing the document it is necessary to have agreements of not less then t members. The Arbitrator is a trusted third party. It receives the information from the t members and completes the calculation of the digital signature. A verifier can identify the original signer and the members of the proxy group P. The main feature is that n members of the proxy group can not calculate the proxy key and the original signer’s secret key.

【 授权许可】

Unknown