Multiplex Contract Signing Protocol
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    Abstract:

    Utilizing the Cha-Cheon’s identity-based signature scheme, a provably secure identity-based verifiably encrypted signature (VES) scheme is proposed. Utilizing the proposed scheme and identity-based proxy verifiably encrypted signature (PVES) scheme, a novel multiplex contract signing protocol is also proposed. The original signer or proxy signer uses VES or PVES to realize the interaction and certification of the commitment message in the information exchange process. The proposed scheme does not need the zero-knowledge proof and excessive computation. An optimized trusted third party who participates in the protocol extracts the formal signature from the VES or PVES only when problem occurs. The performance analysis results show that the scheme satisfies non-repudiation, timeliness and fairness.

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孙艳宾,谷利泽,卿斯汉,郑世慧,杨义先.多元合同签署协议.软件学报,2012,23(4):928-940

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History
  • Received:August 13,2010
  • Revised:March 21,2011
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  • Online: March 28,2012
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