【摘要】：由香農(nóng)的信息論可知,G.Vernam的一次一密方案可以保證通信的絕對(duì)安全,在該方案中密鑰只使用一次即被丟棄,因此需要足夠的密鑰用于數(shù)據(jù)的加密或解密。而量子密鑰分發(fā)(Quantum Key Distribution, QKD)系統(tǒng)可以實(shí)現(xiàn)大量密鑰的安全有效的分發(fā),進(jìn)而在一次一密的基礎(chǔ)上保障了數(shù)據(jù)傳輸?shù)陌踩院退矫苄�。本文主要�?duì)與量子密鑰分發(fā)有密切關(guān)系的數(shù)據(jù)協(xié)調(diào)和系統(tǒng)軟件進(jìn)行了相關(guān)的研究,以有助于量子密鑰分發(fā)進(jìn)一步的實(shí)用化,進(jìn)而使得數(shù)據(jù)傳輸?shù)陌踩杂羞M(jìn)一步的保證。首先,本文介紹了二分法、級(jí)聯(lián)糾錯(cuò)和漢明編碼這三種經(jīng)典的數(shù)據(jù)協(xié)調(diào)算法的基本步驟,并對(duì)二分法進(jìn)行了性能仿真,以驗(yàn)證二分法對(duì)不同誤碼率分組的協(xié)調(diào)效率：當(dāng)誤碼率較低時(shí),協(xié)調(diào)效率較高；當(dāng)誤碼率較高時(shí),則由于密鑰的遞歸分組并比較,使得通信量和數(shù)據(jù)的舍棄增加,進(jìn)而協(xié)調(diào)效率下降。其次,在經(jīng)典數(shù)據(jù)協(xié)調(diào)算法的基礎(chǔ)上,本文介紹了效率更高和糾錯(cuò)性能更好的基于低密度檢驗(yàn)(Low-density Parity-Check, LDPC)碼的數(shù)據(jù)協(xié)調(diào)算法。對(duì)于基于LDPC碼的數(shù)據(jù)協(xié)調(diào)算法,重點(diǎn)研究了利用其進(jìn)行數(shù)據(jù)協(xié)調(diào)的基本步驟和該算法中的R-U編碼。然后,在實(shí)現(xiàn)了基于LDPC碼的數(shù)據(jù)協(xié)調(diào)軟件模塊的基礎(chǔ)上對(duì)其進(jìn)行了仿真,從仿真結(jié)果可看出該算法是可行的,可有效地糾正密鑰中的錯(cuò)誤位,并且優(yōu)于二分法數(shù)據(jù)協(xié)調(diào)算法,進(jìn)而為以后的數(shù)據(jù)安全傳輸提供了保證。第三,本文對(duì)量子密鑰分發(fā)系統(tǒng)軟件部分進(jìn)行新的模塊化設(shè)計(jì)。量子密鑰分發(fā)系統(tǒng)主要由管理模塊、應(yīng)用模塊和QKD模塊三個(gè)模塊組成,其中管理模塊主要對(duì)密鑰池、QKD模塊和應(yīng)用模塊進(jìn)行相關(guān)的調(diào)度,并作為整個(gè)系統(tǒng)的接口與量子網(wǎng)絡(luò)服務(wù)器進(jìn)行信息的交互。本文設(shè)計(jì)了各模塊的工作流程以及相互間信息傳遞的機(jī)制,根據(jù)相互間信息的傳遞情況對(duì)各自的流程進(jìn)行了設(shè)計(jì),并根據(jù)相互間傳遞信息的多少以及消息的傳輸方向給出了該系統(tǒng)各進(jìn)程間通信的相關(guān)描述。最后,對(duì)全文進(jìn)行總結(jié),在此基礎(chǔ)上,結(jié)合量子密鑰分發(fā)系統(tǒng)的發(fā)展方向,對(duì)下一步的工作進(jìn)行了展望。
[Abstract]:According to Shannon's information theory, G.Vernam 's one-to-one secret scheme can guarantee the absolute security of communication. In this scheme, the key is discarded only once, so we need enough key to encrypt or decrypt the data. The quantum key distribution (Quantum Key Distribution, QKD) system can realize the secure and efficient distribution of a large number of keys, and then guarantee the security and privacy of the data transmission on the basis of one secret at a time. In this paper, data coordination and system software, which are closely related to quantum key distribution, are studied in order to contribute to the further practicality of quantum key distribution and further guarantee the security of data transmission. Firstly, this paper introduces the basic steps of three classical data coordination algorithms: dichotomy, concatenated error correction and hamming coding, and simulates the performance of dichotomy. In order to verify the coordination efficiency of dichotomy for different BER packets: when the bit error rate is low, the coordination efficiency is higher; When the bit error rate is high, because of the recursive grouping and comparison of the keys, the traffic and data abandonment will be increased, and the coordination efficiency will then decrease. Secondly, on the basis of the classical data coordination algorithm, this paper introduces a data coordination algorithm based on low density test (Low-density Parity-Check, LDPC) codes, which is more efficient and has better error correction performance. For the data coordination algorithm based on LDPC codes, the basic steps of data coordination based on LDPC codes and the RXU coding in this algorithm are studied in detail. Then, based on the realization of LDPC code-based data coordination software module, the simulation results show that the algorithm is feasible, can effectively correct the error bits in the key, and is superior to the dichotomy data coordination algorithm. Furthermore, it provides a guarantee for the secure transmission of data in the future. Thirdly, this paper makes a new modular design for the software part of quantum key distribution system. Quantum key distribution system mainly consists of three modules: management module, application module and QKD module. The management module mainly dispatches the key pool, QKD module and application module. And acts as the interface of the whole system and carries on the information interaction with the quantum network server. In this paper, the workflow of each module and the mechanism of information transmission between each other are designed, and their respective processes are designed according to the transmission of information between each other. According to the number of information transmitted between each other and the transmission direction of the message, the related description of the communication among the processes of the system is given. Finally, the whole paper is summarized, and the future work is prospected according to the development direction of quantum key distribution system.
【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)】：O413;TN918.4

【相似文獻(xiàn)】

相關(guān)期刊論文 前2條

1 李霽;麻土華;;基于W函數(shù)的數(shù)據(jù)分組方法的算法實(shí)現(xiàn)[J];科技通報(bào);2012年05期

2 ;[J];;年期

相關(guān)重要報(bào)紙文章 前1條

1 本報(bào)記者 趙姍;大數(shù)據(jù)時(shí)代來臨，，中國(guó)準(zhǔn)備好了嗎？[N];中國(guó)經(jīng)濟(jì)時(shí)報(bào);2013年

相關(guān)博士學(xué)位論文 前2條

1 劉海青;大規(guī)模VANET數(shù)據(jù)傳輸策略的研究[D];山東大學(xué);2015年

2 劉琴;多用戶共享云計(jì)算服務(wù)環(huán)境下安全問題研究[D];中南大學(xué);2012年

相關(guān)碩士學(xué)位論文 前10條

1 張忠賀;Modbus/TCP協(xié)議在WIFI應(yīng)用通訊下的實(shí)現(xiàn)[D];內(nèi)蒙古大學(xué);2015年

2 喬新生;量子密鑰分發(fā)系統(tǒng)中數(shù)據(jù)協(xié)調(diào)算法及軟件設(shè)計(jì)[D];西安電子科技大學(xué);2014年

3 劉娟;橋梁健康監(jiān)測(cè)系統(tǒng)的設(shè)計(jì)與實(shí)現(xiàn)[D];電子科技大學(xué);2011年

4 陳娜;基于Hadoop平臺(tái)的海量數(shù)據(jù)處理應(yīng)用[D];吉林大學(xué);2012年

5 蔣杰;基于GPRS的嵌入式系統(tǒng)安全無堵塞通信研究與設(shè)計(jì)[D];哈爾濱工程大學(xué);2013年

6 蔣穎;面向卷煙制絲線的SPC系統(tǒng)的應(yīng)用研究與實(shí)現(xiàn)[D];湖南大學(xué);2012年

7 羅恩澤;面向大規(guī)模工程機(jī)械遠(yuǎn)程智能監(jiān)控的無線通信協(xié)議[D];湖南大學(xué);2011年

8 付金光;電力系統(tǒng)不良數(shù)據(jù)辨識(shí)的實(shí)用軟件開發(fā)[D];鄭州大學(xué);2011年

9 張迪;基于Android煤礦安全生產(chǎn)移動(dòng)監(jiān)測(cè)系統(tǒng)設(shè)計(jì)與實(shí)現(xiàn)[D];西安科技大學(xué);2013年

10 劉建歡;基于SMS、WAP的移動(dòng)信息技術(shù)在制造企業(yè)中的應(yīng)用研究[D];大連交通大學(xué);2008年

本文編號(hào)：2464652