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Mechanisms for Accelerating Online/Offline Signature Verification

Author: ZhangYiLian
Tutor: ChenZhiDe
School: Fujian Normal University
Course: Computer applications and technology
Keywords: Online / offline verification Batch verifying Short signature Chameleon hash
CLC: TN918.1
Type: Master's thesis
Year: 2011
Downloads: 14
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Abstract


Even, Goldreich and Micali in 1989 , the first online / offline signature scheme concept as the main features of a special class of digital signatures , online / offline signature : the signature is divided into two phases, the first offline stage : of the information to be checked has not yet been identified , the signer do some preprocessing , the second stage is the online phase : Once the information is determined to be signed , the signature by using the offline stage pretreatment results generated within a very short time , signature. Online / Offline Signature biggest benefit is to reduce the overhead of signature , because there is no need to do complex modular exponentiation , just do a simple XOR or plus multiplication . Boneh, Lynn and Shacham in 2001 to take advantage of the bilinear design a short signature scheme . Since then, a number based the bilinear pairings digital signature scheme is proposed. These signatures based on bilinear with a safe , efficient and practical features, but these programs need overhead bilinear validation phase of the operator , so that greatly increased the overhead of the validation phase . In this paper , we extend the short signature scheme based on bilinear research , in order to improve the efficiency of the verification of the signature scheme . We propose a batch of online / offline signature verification scheme , the verifier can be a one-time validation the n signature and verify the amount of computation to be far lower than the calculation of the amount of n signatures were verified ; we propose a separable online / offline signature scheme ; we also proposed an online / offline verification signature scheme , so the certifier online stage do not need to do overhead bilinear operations to improve verification efficiency .

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