環(huán)形振蕩器物理不可克隆函數(shù)的比較策略及可重構(gòu)研究
[Abstract]:With the further development of information technology, people pay more and more attention to the problem of information security. As a new encryption component, physical non-clone function (Physical Unclonable Function,PUF) is paid more and more attention to by researchers. The principle of PUF is to extract the random differences caused by the inconsistency of manufacturing process in integrated circuits. To realize the generation of encryption information (response). Because PUF has the characteristics of non-cloning and unpredictability, it has a broad application prospect in the field of information security such as IP core protection and key generation of device authorization / authentication. This paper begins with the realization principle, classification, property and structure of PUF, and systematically combs the concept of PUF. The next part of the paper revolves around the classical PUF structure-ring oscillator (Ring Oscillator,RO). In this paper, the differences between two types of RO PUF systems (Challenge/Response Pairs,CRPs and CRPs) and the function and design of each module in the system are analyzed. In addition, in order to ensure that RO PUF has good PUF characteristics each RO in RO array needs the same structure and similar physical position. In this paper, the Hard Macro technology provided by Xilinx FPGA tools is adopted and implemented by adding constraints. Secondly, through the statistical analysis of the RO oscillation frequency in 193 FPGA blocks, three kinds of RO frequency distribution characteristics are found and summarized in the RO array. According to these three characteristics, three new RO comparison strategies are proposed, and five different comparison strategies are quantitatively evaluated from the point of view of the entropy density of response information. The results show that the new symmetric comparison strategy has the best response quality. It also shows that the characteristics of RO frequency distribution have important guiding significance for RO comparison strategy design and security improvement of RO PUF. Finally, a new PUF architecture, reconfigurable RO (Reconfigurable RO,RRO) PUF, is proposed in this paper, which is designed to improve the efficiency of RO PUF hardware and the uniqueness of its response. In this paper, the basic structure, working principle, system design and hardware resource consumption analysis of RRO PUF are discussed. According to the principle of RRO PUF, a new strategy of response extraction is designed. In addition, this paper also analyzes the circuit structure characteristics of RRO in Xilinx Spartan-6FPGA and the adjustment and optimization needed in the process of realization in FPGA. The experimental results show that compared with RO PUF,RRO PUF, it not only has higher hardware efficiency, but also has better response uniqueness and randomness.
【學(xué)位授予單位】:南京航空航天大學(xué)
【學(xué)位級別】:碩士
【學(xué)位授予年份】:2014
【分類號】:TN918.4;TN752
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