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Research On Blind Signature And Ring Signature

Posted on:2011-12-21Degree:MasterType:Thesis
Country:ChinaCandidate:G CaoFull Text:PDF
GTID:2218330332470147Subject:Basic mathematics
Abstract/Summary:PDF Full Text Request
Digital signature technology to ensure information integrity and identity as an important tool for certification has become an important mechanism for information security.In real applications, to meet the needs of different environments, result in a number of special signature scheme. such as: group signature, ring signature, blind signature, proxy signature, threshold signatures. Blind signature, due to its ability to protect the anonymity of those who sign up for them, electronic cash and electronic elections have broad application prospects. The ring signature on the signer to solve completely anonymous in nature, also has been made a wide range of applications.In this paper, knowledge of cryptography has a brief introduction, including: the basic knowledge of digital signatures , the research background of blind signatures and ring signatures , development status and practical significance. In addition, describes the relevant knowledge of cryptography and elementary number theory.Secondly, the author read a large number domestic and foreign literature . In the blind signature and ring signature has done some useful explorations and attempts to achieve the following key findings:1,Give a completely blind signature scheme. This program is based on blind signature system ELGmanl.2,Combinating proxy signature with blind signature , give a proxy blind signature schemes.3,Give a blind ring signature scheme on blind signature and ring signature combination.4,Through introducing forward security and master key mechanism into ring signature,a forward security ring signature was obtained.5,Introduced the e-commerce knowledge, and blind signature schemes are specifically applicable to electronic cash. A digital signature based on the failure --- off-line electronic systems and a fully blind and prior security features of e-cash System program were given.Finally, a brief introduction of the ring signature applications and ring signature research.
Keywords/Search Tags:digital signature, blind signature, ring signature, forward security, electronic cash
PDF Full Text Request
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