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Quantum encryption and authentication protocols.

機譯：量子加密和認(rèn)證協(xié)議。

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摘要

The demands for secure communication systems have been growing rapidly as technologies in computer networks advance. However, classical cryptography employed in network systems is only secure when malicious users do not have enough computational power to break the security in a practical amount of time. Quantum cryptography provides theoretically unbreakable security since its security relies on quantum mechanical properties. This dissertation resolves the weakness of classical cryptography in computer networks by developing novel cryptographic schemes. First, a new encryption scheme, quantum commutative encryption (QCE), has been developed by utilizing quantum superposition states. The analysis of possible attacks to the developed encryption scheme, the advantages of the developed scheme, and the requirements to utilize the developed scheme in a communication system are presented. Also, an example of realization with current technologies is shown.; Considering all the characteristics of the developed encryption scheme, a key distribution protocol, two authentication protocols, secret sharing scheme, and the possible practical application of the secret sharing scheme are designed by making use of the developed encryption scheme. This dissertation also discusses the security analysis for each developed scheme. All developed quantum cryptographic schemes are theoretically unbreakable and can be realized with current technologies.; The main contributions of this dissertation are not only the proposal of novel schemes, but also a demonstration of how quantum mechanical properties can be utilized in computer engineering/science.
機譯：隨著計算機網(wǎng)絡(luò)技術(shù)的發(fā)展，對安全通信系統(tǒng)的需求已迅速增長。但是，僅當(dāng)惡意用戶沒有足夠的計算能力在實際時間內(nèi)破壞安全性時，網(wǎng)絡(luò)系統(tǒng)中使用的傳統(tǒng)加密技術(shù)才是安全的。量子密碼學(xué)在理論上提供了堅不可摧的安全性，因為其安全性依賴于量子力學(xué)特性。本文通過開發(fā)新穎的密碼方案，解決了計算機網(wǎng)絡(luò)中經(jīng)典密碼技術(shù)的弱點。首先，通過利用量子疊加態(tài)，開發(fā)了一種新的加密方案，量子交換加密（QCE）。提出了對已開發(fā)的加密方案的可能攻擊的分析，已開發(fā)方案的優(yōu)點以及在通信系統(tǒng)中利用已開發(fā)方案的要求。此外，顯示了使用當(dāng)前技術(shù)實現(xiàn)的示例?？紤]到所開發(fā)的加密方案的所有特征，利用所開發(fā)的加密方案來設(shè)計密鑰分發(fā)協(xié)議，兩個認(rèn)證協(xié)議，秘密共享方案以及秘密共享方案的可能實際應(yīng)用。本文還討論了每種已開發(fā)方案的安全性分析。從理論上講，所有已開發(fā)的量子密碼方案都是堅不可摧的，并且可以用當(dāng)前技術(shù)來實現(xiàn)。本文的主要貢獻不僅在于提出新穎的方案，而且還證明了如何在計算機工程/科學(xué)中利用量子力學(xué)特性。

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  • 作者

    Kanamori, Yoshito.;

  • 作者單位

    The University of Alabama in Huntsville.;

  • 授予單位 The University of Alabama in Huntsville.;
  • 學(xué)科 Computer Science.
  • 學(xué)位 Ph.D.
  • 年度 2006
  • 頁碼 105 p.
  • 總頁數(shù) 105
  • 原文格式 PDF
  • 正文語種 eng
  • 中圖分類 自動化技術(shù)、計算機技術(shù);
  • 關(guān)鍵詞

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