Face privacy protection scheme by security-enhanced encryption structure and nonlinear dynamics
Zhiyu Xie,
Yiting Lin,
Tengyu Liu,
Heping Wen
Affiliations
Zhiyu Xie
University of Electronic Science and Technology of China, Zhongshan Institute, Zhongshan 528402, China; School of Information and Communication Engineering, University of Electronic Science and Technology of China, Chengdu 611731, China
Yiting Lin
University of Electronic Science and Technology of China, Zhongshan Institute, Zhongshan 528402, China; School of Information and Communication Engineering, University of Electronic Science and Technology of China, Chengdu 611731, China
Tengyu Liu
University of Electronic Science and Technology of China, Zhongshan Institute, Zhongshan 528402, China; School of Information and Communication Engineering, University of Electronic Science and Technology of China, Chengdu 611731, China
Heping Wen
University of Electronic Science and Technology of China, Zhongshan Institute, Zhongshan 528402, China; School of Information and Communication Engineering, University of Electronic Science and Technology of China, Chengdu 611731, China; Corresponding author
Summary: This article proposes a secure communication enhancement scheme based on face detection and chaotic partition permutation. The scheme uses edge detection technology to detect facial information, which is then used as an encryption object. The hash value of the plaintext image is extracted as the secret key to the chaotic sequence generated by the chaotic system. Then a series of encryption operations are performed on the face image to obtain the final ciphertext image. In this article, two chaotic systems are used to generate pseudo-random chaotic sequences for different encryption steps. The initial key is computed by combining the hash function of the image and external parameters. The experimental results and security analysis show that the algorithm has excellent encryption effectiveness and security performance against various typical attacks.
