考虑隐私信息安全性的极少样本条件指纹图像细节加密算法  

A few sample condition fingerprint image detail encryption algorithm considering privacy information security

作　　者：刘展鹏[1] 马振超[1] LIU Zhan-peng;MA Zhen-chao(National Security Academy,Chinese People's Public Security University,Beijing 100038,China)

机构地区：[1]中国人民公安大学国家安全学院,北京100038

出　　处：《吉林大学学报(工学版)》2025年第2期687-692,共6页Journal of Jilin University:Engineering and Technology Edition

基　　金：国家社会科学基金重大项目(22ZDZA122)。

摘　　要：为保证指纹信息的安全性和隐私性,提出了一种考虑隐私信息安全性的极少样本条件指纹图像细节加密算法。在极少数样本条件下,通过四方定理的分块原则,将指纹明文图像分为多个正方形图像块,以组建置乱所需的幻方矩阵。将各矩阵展开置乱处理后,再展开拼接和转置等操作,充分扩散全部像素,使其还原为原始指纹图像大小,经过多次置乱得到预加密后的指纹图像。将明文图像组成指纹图像立方体,通过明文图像的哈希值和外部参数形成初始密钥,将其代入混沌系统形成所需序列。利用混沌序列形成掩膜和规则矩阵,对掩膜矩阵和置乱结果展开动态DNA编码。同时通过规则矩阵对编码后的图像立方体和掩膜矩阵展开DNA运算,经过DNA动态解码即可获取最终的指纹图像细节加密图像。实验结果表明:本文算法可以更加高效地保证在极少样本条件下指纹图像的隐私信息安全性。To ensure the security and privacy of fingerprint information,a very few sample conditionalfingerprint image detail encryption algorithm considering privacy information security is proposed.Underextremely few sample conditions,the fingerprint plaintext image is divided into multiple square imageblocks using the block principle of the square theorem to construct the magic square matrix required forscrambling.After unfolding and scrambling each matrix,operations such as stitching and transposing arecarried out to fully diffuse all pixels and restore them to the original fingerprint image size.After multiplescrambling operations,the pre encrypted fingerprint image is obtained.Compose a fingerprint image cubefrom plaintext images,form an initial key through the hash value and external parameters of the plaintextimage,and substitute it into a chaotic system to form the desired sequence.Using chaotic sequences toform masks and rule matrices,dynamic DNA encoding is performed on the mask matrix and scramblingresults.At the same time,DNA operations are performed on the encoded image cube and mask matrixthrough a rule matrix,and the final encrypted fingerprint image details can be obtained through DNAdynamic decoding.The experimental results show that the proposed algorithm can more efficiently ensurethe privacy information security of fingerprint images under very few sample conditions.

关 键 词：考虑隐私信息安全性 极少样本条件 指纹图像 细节加密 

分 类 号：TP309[自动化与计算机技术—计算机系统结构]