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Please use this identifier to cite or link to this item: http://ntour.ntou.edu.tw:8080/ir/handle/987654321/40287

Title: Certificate-Based Secure Three-Party Signcryption Scheme with Low Costs
Authors: HAN-YU LIN
Contributors: 國立臺灣海洋大學:資訊工程學系
Keywords: public key encryption.
bilinear pairings
Date: 2012
Issue Date: 2017-01-17T03:09:12Z
Abstract: Abstract: A signcryption scheme combining public key encryption and digital signatures can
simultaneously satisfy the security requirements of confidentiality, integrity, authenticity
and non-repudiation. In a three-party communication environment, a message
signcrypted by one party might have to be securely delivered to the other two and they
usually independently decrypt the ciphertext and verify recovered signature.
Consequently, traditional signcryption schemes of single-recipient setting are not
applicable. In this paper, we elaborate on the certificate-based cryptosystem to propose a
provably secure three-party signcryption scheme from bilinear pairings. The security
requirement of confidentiality against indistinguishability under adaptive
chosen-ciphertext attacks (IND-CCA2) and that of unforgeability against existential
forgery under adaptive chosen-message attacks (EF-CMA) are proved in the random
oracle model. Moreover, our scheme enables each recipient to solely reveal the signer’s
original signature for public verification without extra computational efforts when the
case of a later dispute over repudiation occurs. To the best of our knowledge, the
proposed scheme is the first provably secure signcryption considering three-party
communication environments.
Relation: 28(4)
URI: http://ntour.ntou.edu.tw:8080/ir/handle/987654321/40287
Appears in Collections:[資訊工程學系] 期刊論文

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