Cryptanalysis of a certificateless multi-proxy signature scheme

Authors:
Lei Zhang
Affiliations:
Software Engineering Institute, East China Normal University, Shanghai, China
Venue:
ICDCN'12 Proceedings of the 13th international conference on Distributed Computing and Networking
Year:
2012

Citing 3
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Proxy signatures for delegating signing operation

CCS '96 Proceedings of the 3rd ACM conference on Computer and communications security
A new certificateless aggregate signature scheme

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Certificateless multi-proxy signature

Computer Communications

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Abstract

Proxy signatures allow a proxy signer to sign messages on behalf of an original signer within a given context. They are widely used in distributed systems, grid computing, mobile agent applications, distributed shared object systems, global distribution networks, and mobile communications. Multi-proxy signature is a variation of the proxy signature primitive. In such a scheme, an original signer delegates his signing power to a group of proxy signers, and then only the cooperation of all the proxy signers can generate valid proxy signatures, referred to as multi-proxy signatures, on behalf of the original signer. Recently, a multi-proxy signature scheme is presented in certificateless public key cryptosystem. We show this scheme is insecure.