Security model of proxy-multi signature schemes

Authors:
Feng Cao;Zhenfu Cao
Affiliations:
Department of Computer Science and Engineering, Shanghai Jiao Tong University, Shanghai, P.R. China;Department of Computer Science and Engineering, Shanghai Jiao Tong University, Shanghai, P.R. China
Venue:
CANS'06 Proceedings of the 5th international conference on Cryptology and Network Security
Year:
2006

Citing 4
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Abstract

In a proxy multi-signature scheme, a designated proxy signer can generate the signature on behalf of a group of original signers. Although some work has been done in proxy-multi signature schemes, until now there is no formalized definition and security model for them. In this paper, we will give the formal definition and a security model of proxy-multi signature scheme. We also constructed a proxy-multi signature scheme based on the BLS short signature scheme and proved its security in our security model.