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Research on Certificate-Based Undeniable Signature

Author: WangZuoJuan
Tutor: HuangZhenJie
School: Zhangzhou Normal University
Course: Applied Computer Technology
Keywords: Certificate-based public key cryptography system Digital Signature Undeniable Signature Provable security Designated verifier signature
CLC: TN918.1
Type: Master's thesis
Year: 2010
Downloads: 34
Quote: 0
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Abstract


Learn the concept of certificate-based public key cryptography Gentry in Eurocrypt 2003 first proposed , it has overcome the problem of certificate management in the traditional public key system , based on key escrow problem in identity public key system , and no certificate public key system of trusted third - party trust level lower . undeniable signature concept first proposed in 1989 by Chaum and van Antwerpen undeniable signature verification requires the signer to participate to complete , but the signer can not deceive the verifier involved verification , the signer is neither verifier can accept an invalid signature , nor can verify who believe that a valid signature is invalid . Firstly construct an efficient provably secure certificate-based signature scheme , the program signature algorithm does not require any bilinear pairing operation on a bilinear operator in the signature verification algorithm efficiency superior to the existing certificate-based digital signature scheme given certificate-based designated verifier the general definition of the signature and security requirements, propose a signature scheme and a brief analysis of its security . Finally, given the undeniable signature certificate-based formal definition and security model , based on the above specified based the certificate signature schemes and certificate-based verifier signature scheme to construct a certificate-based undeniable signature scheme , and prove that the proposed scheme is secure in the random oracle model .

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CLC: > Industrial Technology > Radio electronics, telecommunications technology > Communicate > Confidentiality of communications and communications security > Theory
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