本文關鍵詞： 數字簽名 代理盲簽名 雙線性映射 無證書公鑰密碼體制　出處：《信陽師范學院》2014年碩士論文　論文類型：學位論文

【摘要】：隨著計算機網絡技術和通信技術的飛速發(fā)展,社會的信息化程度越來越高.政治、軍事、外交、商業(yè)、金融等領域,特別是電子貿易、電子支票、電子購物、電子出版以及知識產權保護等方面都與信息安全息息相關. 信息安全事關國家安全、社會穩(wěn)定和人民福祉；信息安全與軍事、外交、政治、經濟、金融,甚至老百姓的日常生活關系越來越密切,信息安全的重要性亦與日俱增. 目前,密碼學技術己成為解決信息安全問題的一個核心技術,不僅用于對數據進行加密而抵御敵手的竊密行為等傳統(tǒng)領域,而且還用于個人和企業(yè)對數字信息的真實性認證、產品防偽等各種與信息安全相關的領域. 數字簽名作為信息安全諸多應用領域的核心技術之一,在現(xiàn)代事務處理中逐漸取代了傳統(tǒng)的以書面文件為基礎的手寫簽名,特別是在電子政務、電子商務貿易、銀行金融系統(tǒng)、網絡訂購票系統(tǒng)、電子郵件收發(fā)、電子出版以及知識產權保護等方面有著廣泛用途. 在實際工作和生活中,普通的數字簽名已不能適應各種特殊需求,于是各種具有特殊性質的數字簽名應運而生,例如,代理簽名就是一種既具有基本數字簽名功能,又具有代理功能的特殊數字簽名；另一種盲簽名也是一種具有特殊性質的數字簽名,它能使被簽消息的內容對簽名人保密,并且簽名者無法由簽名追蹤到信息內容,保證被簽消息的安全.代理簽名和盲簽名分別在電子商務和電子選舉中具有舉足輕重的地位. 代理盲簽名集聚了二者的優(yōu)勢,在現(xiàn)代信息社會具有重要的應用價值,一經提出便受到密碼學界的廣泛關注.代理盲簽名方案兼具代理簽名和盲簽名的雙重特性,即代理簽名人不僅可以接受原始簽名人的授權委托代理其完成數字簽名,而且代理簽名人還能在不知道被簽消息內容的情況下完成簽名,進而保證被簽消息的隱蔽性. 本文通過分析一種新的基于身份的代理盲簽名方案的部分安全隱患,提出了一種基于無證書公鑰密碼體制的更安全更高效的代理盲簽名方案.較之干原方案,新方案不存在公鑰證書的管理和密鑰托管的問題,安全性得到了極大提高.
[Abstract]:With the rapid development of computer network technology and communication technology, the information level of society is becoming more and more high. The fields of politics, military affairs, diplomacy, commerce, finance and so on, especially electronic trade, electronic check, electronic shopping. Electronic publishing and intellectual property protection are closely related to information security. Information security concerns national security, social stability and the well-being of the people; Information security is more and more closely related to military, diplomatic, political, economic, financial and even ordinary people's daily life, and the importance of information security is also increasing. At present, cryptography technology has become a core technology to solve the problem of information security. It is not only used to encrypt the data and resist the stolen behavior of the enemy and other traditional fields. It is also used by individuals and enterprises to authenticate the authenticity of digital information, product security and other fields related to information security. Digital signature, as one of the core technologies in many application fields of information security, has gradually replaced the traditional handwritten signature based on written document in modern transaction processing, especially in e-government. E-commerce, banking and finance systems, online booking systems, e-mail sending and receiving, e-publishing and intellectual property protection are widely used. In the actual work and life, the ordinary digital signature can no longer adapt to various special needs, so a variety of digital signatures with special properties came into being, such as. Proxy signature is a special digital signature with both basic digital signature function and proxy function. Another kind of blind signature is also a digital signature with special properties, which can make the content of the signed message confidential to the signer, and the signer can not trace the information content by the signature. Proxy signature and blind signature play an important role in electronic commerce and electronic election respectively. Proxy blind signature has the advantages of both and has important application value in modern information society. The proxy blind signature scheme has the dual characteristics of proxy signature and blind signature. That is the proxy signer can not only accept the authorization of the original signer to delegate the proxy to complete the digital signature but also the proxy signer can complete the signature without knowing the content of the signed message. In turn, to ensure that the message is signed in the concealment. This paper presents a more secure and efficient proxy blind signature scheme based on certificate-free public key cryptosystem by analyzing some security risks of a new identity-based proxy blind signature scheme. The new scheme does not have the problems of public key certificate management and key escrow, and the security is greatly improved.
【學位授予單位】：信陽師范學院
【學位級別】：碩士
【學位授予年份】：2014
【分類號】：TN918.91

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本文編號：1450947