本文選題：可視密碼 + 身份認(rèn)證�。� 參考：《西安電子科技大學(xué)》2014年碩士論文

【摘要】：隨著網(wǎng)絡(luò)和高科技技術(shù)的日漸普及,越來越多的人利用網(wǎng)絡(luò)進(jìn)行各種活動(dòng),保證信息的安全就變得尤為重要。身份認(rèn)證作為信息安全理論重要的組成部分,是使系統(tǒng)避免遭受安全威脅的第一道關(guān)卡。身份認(rèn)證是指驗(yàn)證者通過驗(yàn)證被認(rèn)證對(duì)象的屬性(例如,口令、數(shù)字簽名、數(shù)學(xué)證明過程、指紋等生理特征),達(dá)到確認(rèn)被認(rèn)證對(duì)象是否有效和屬實(shí)的目的的一個(gè)過程,實(shí)際上就是驗(yàn)證某些秘密信息的過程。可視密碼是近十余年才慢慢發(fā)展起來的新型密碼學(xué)分支,它與處理數(shù)字信息的傳統(tǒng)密碼學(xué)不同,它是針對(duì)圖像進(jìn)行加解密的。而且,利用可視密碼加解密不需要進(jìn)行大量復(fù)雜的運(yùn)算,只需將多幅分享圖像進(jìn)行簡(jiǎn)單的疊加,然后利用人的視覺系統(tǒng)進(jìn)行解密。對(duì)于現(xiàn)在必須進(jìn)行大量復(fù)雜運(yùn)算的各種密碼學(xué)技術(shù)來說,可視密碼無疑是一個(gè)新奇有趣,值得深入研究的領(lǐng)域。本文在初步了解了幾種主要的身份認(rèn)證技術(shù)的前提下,挑選了簡(jiǎn)單易行的口令認(rèn)證和應(yīng)用廣泛的零知識(shí)證明身份認(rèn)證進(jìn)行了深入了解。分析了口令認(rèn)證和零知識(shí)證明身份認(rèn)證的優(yōu)缺點(diǎn),將可視密碼與其相結(jié)合,提出了基于可視密碼的智能卡口令認(rèn)證方案和基于可視密碼的零知識(shí)證明身份認(rèn)證方案,并進(jìn)行了仿真,對(duì)方案的性能和安全性進(jìn)行了分析。本文提出的方案與原方案相比,計(jì)算復(fù)雜度低,安全性高。
[Abstract]:With the increasing popularity of the network and high-tech technology, more and more people use the network to carry out various activities, ensuring the security of information becomes particularly important. As an important part of information security theory, identity authentication is the first level to prevent the system from being threatened by security. Identity authentication is a process that verifies the validity and authenticity of the authenticated object by verifying the attributes of the authenticated object (for example, password, digital signature, mathematical proof process, fingerprint and so on). In fact, it is the process of verifying some secret information. Visual cryptography is a new branch of cryptography which has developed slowly in the past ten years. It is different from the traditional cryptography in dealing with digital information. It is aimed at the encryption and decryption of images. Moreover, the use of visual encryption and decryption does not require a large number of complex operations, only need to share a number of images for a simple superposition, and then use the human visual system to decrypt. Visual cryptography is undoubtedly a novel and interesting field for various cryptographic techniques which must carry out a large number of complex operations. Based on the understanding of several main authentication technologies, this paper selects a simple and easy password authentication and a widely used zero-knowledge proof authentication for in-depth understanding. This paper analyzes the advantages and disadvantages of password authentication and zero-knowledge proof identity authentication, combines visual cipher with it, proposes a password authentication scheme based on visual cipher for smart card and a zero-knowledge proof identity authentication scheme based on visual cipher. The performance and security of the scheme are analyzed by simulation. Compared with the original scheme, the proposed scheme has lower computational complexity and higher security.
【學(xué)位授予單位】：西安電子科技大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2014
【分類號(hào)】：TN918.1

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