基于二维码和混沌加密技术的指纹识别研究  

Research on fingerprint identification based on two⁃dimensional code and chaotic encryption technology

作　　者：王洪亮[1] 许荣彪 WANG Hongliang;XU Rongbiao(Faculty of Electric Power Engineering,Kunming University of Science and Technology,Kunming 650000,China)

机构地区：[1]昆明理工大学电力工程学院,云南昆明650000

出　　处：《现代电子技术》2022年第11期62-67,共6页Modern Electronics Technique

基　　金：中国博士后科学基金资助项目(2019M653496)。

摘　　要：针对传统的指纹识别存在安全隐患,指纹信息容易被窃取,将二维码技术、混沌加密技术和指纹识别技术相结合,利用改进的特征提取算法和图像加密算法,将采集的指纹图像经过指纹预处理后利用4×4的模板搜索提取法对指纹进行特征提取;然后利用基于Logistic映射和Sine⁃sine映射的图像加密算法对图像加密,生成二维码;识别时先扫描二维码,再进行图像解密,最后对比指纹完成指纹识别。此研究通过Matlab仿真实验验证了改进的特征提取算法和图像加密算法的实用性和可行性。将指纹识别技术、二维码技术和图像加密技术相结合,经过混沌加密后的指纹信息不容易被破解,有效提高了指纹信息的隐密性,保证了指纹信息的安全性。The traditional fingerprint identification has security risks,and the fingerprint information is vulnerable to theft.Therefore,the two⁃dimensional code technology,chaotic encryption technology and fingerprint identification technology are combined,the improved feature extraction algorithm and image encryption algorithm are used to preprocess the collected fingerprint images,and the fingerprint features are extracted by 4×4 template search extraction method.And then,the image encryption algorithm based on Logistic map and Sine⁃sine map is used to encrypt the image to generate the two⁃dimensional code.When identifying,the two⁃dimensional code is scanned first,and then the image is decrypted.Finally,the fingerprints are contrasted to complete fingerprint identification.The practicability and feasibility of the improved feature extraction algorithm and image encryption algorithm are verified by a simulation experiment with Matlab.The fingerprint identification technology,two⁃dimensional code technology and image encryption technology are combined in this paper,and the fingerprint information is invulnerable after chaotic encryption,which effectively improves the confidentiality of fingerprint information and ensures the security of fingerprint information.

关 键 词：指纹识别 二维码 混沌加密 指纹预处理 特征提取 图像加密 信息隐藏 

分 类 号：TN918.4-34[电子电信—通信与信息系统]