基于数字签名二维码认证技术的研究与实现

发布时间：2018-01-04 00:04

本文关键词：基于数字签名二维码认证技术的研究与实现　出处：《北京印刷学院》2017年硕士论文　论文类型：学位论文

【摘要】：二维码标签作为现在应用最广泛的电子标签,其消息来源的真实性、内容的完整性的认证是当今研究的热点。本文研究了数字签名技术和数字水印技术,并结合这两门技术将二维码信息作为图像处理,实现了二维码图像来源的真实性和消息的完整性的认证,同时增添了二维码标签的不可抵赖性。主要工作为:介绍了对二维码标签进行认证的意义,并分析了结合数字签名技术和数字水印技术对二维码标签进行认证的优势;说明了国内外对数字签名技术和数字水印技术的研究现状;随后对关于数字水印算法和数字签名算法的相关基础进行了说明,并进而对具体的算法和理论进行了研究、改进与实现。对数字签名算法进行研究。研究了经典的RSA数字签名算法,利用大数分解的数学难题,对其原理和性能进行了说明与分析;基于SM2国密标准,研究并实现了SM2数字签名算法,解释了其实现的原理,并就其安全性,计算速度等方面进行了分析,说明了结合SM3消息散列函数,将其应用于图像认证上的可能性;研究并改进了一种基于在格理论的NTRU(Number Theory Research Unit)上寻找最短向量的问题(SVP)而设计的数字签名算法,说明了该算法的实现原理,并对该算法的正确性,安全性和计算速度等性能进行了分析与说明。对数字水印算法进行了研究。研究了一种基于空域的LSB数字水印算法,说明了算法的实现原理并对实验的结果进行了分析;研究了一种基于DCT变换的数字水印算法,说明了算法实现的原理并介绍了水印嵌入及提取的过程,同时也对实验的结果进行了分析。设计了两种将数字签名技术和数字水印技术相结合对二维码标签进行认证的方案。结合SM2数字签名算法和基于LSB的数字水印算法,设计了一种在二维码中嵌入其本身二维码信息和数字签名信息的认证方案,实现了对二维码信息的认证的同时增添了不可抵赖性;结合基于NTRU的数字签名算法和基于DCT的数字水印算法,设计了一种在二维码中嵌入水印信息和数字签名信息的认证方案,实现了二维码图像的认证且增强了第一种方案中的鲁棒性。
[Abstract]:As the most widely used electronic tag, the authentication of the authenticity of information source and the integrity of content is a hot topic. This paper studies digital signature technology and digital watermarking technology. Combined with these two techniques, the two-dimensional code information is taken as the image processing, which realizes the authentication of the authenticity of the source of the two-dimensional code image and the integrity of the message. At the same time, the non-repudiation of the two-dimensional code label is added. The main work is as follows: the significance of the authentication of the two-dimension code tag is introduced. The advantages of using digital signature technology and digital watermarking technology to authenticate the QR tag are analyzed. The research status of digital signature technology and digital watermarking technology at home and abroad is explained. Then it explains the relevant foundation of digital watermarking algorithm and digital signature algorithm, and then studies the specific algorithm and theory. Improvement and implementation. The digital signature algorithm is studied. The classical RSA digital signature algorithm is studied. The principle and performance of the digital signature algorithm are explained and analyzed by using the mathematical problem of large number decomposition. Based on the SM2 national secret standard, the SM2 digital signature algorithm is studied and implemented, the principle of its implementation is explained, and its security, calculation speed and other aspects are analyzed. The possibility of applying SM3 message hash function to image authentication is explained. The problem of finding the shortest vector on NTRU(Number Theory Research unit based on lattice theory is studied and improved. And the digital signature algorithm is designed. The realization principle of the algorithm is explained, and the correctness of the algorithm is discussed. The performance of security and computing speed is analyzed and explained. The digital watermarking algorithm is studied. A spatial domain based LSB digital watermarking algorithm is studied. The realization principle of the algorithm is explained and the experimental results are analyzed. A digital watermarking algorithm based on DCT transform is studied. The principle of the algorithm is explained and the process of watermark embedding and extracting is introduced. At the same time, the results of the experiment are analyzed. Two schemes are designed to combine digital signature technology and digital watermarking technology to authenticate the two-dimension code tag. Combined with the SM2 digital signature algorithm and the number based on LSB. Word watermarking algorithm. In this paper, an authentication scheme is designed to embed its own two dimensional code information and digital signature information in the two dimensional code, which realizes the authentication of the two dimensional code information and adds the non-repudiation. Combining digital signature algorithm based on NTRU and digital watermarking algorithm based on DCT, a authentication scheme of embedding watermark information and digital signature information in two-dimensional code is designed. The authentication of the two-dimensional code image is realized and the robustness of the first scheme is enhanced.
【学位授予单位】：北京印刷学院
【学位级别】：硕士
【学位授予年份】：2017
【分类号】：TN918.91;TP391.44

【相似文献】