Identity Based Threshold Proxy Signcryption Scheme

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Identity Based Threshold Proxy Signcryption Scheme
An identity based cryptosystem is a novel type of public cryptographic scheme in which the public keys of the users are their identities or strings derived from their identities. In a ( nt, ) proxy signature scheme, the original signer can delegate his/her signing capability to n proxy signers such that any t or more proxy signers can sign messages on behalf of the former, but 1−t or less of them cannot do the same thing. However, in many situations we want to enjoy confidentiality, authenticity and non-repudiation of message simultaneously. In this paper we propose an identity based threshold proxy signcryption scheme using bilinear pairings. The security of the scheme is also analyzed.
Meng Wang, Zhijing Liu
Added 25 Jun 2010
Updated 25 Jun 2010
Type Conference
Year 2005
Authors Meng Wang, Zhijing Liu
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