Dual scrambling image encryption method based on AFD adaptive decomposition

Abstract

The invention relates to a pixel position and bit dual scrambling image encryption method based on AFD adaptive decomposition, which comprises the following steps: firstly, performing adaptive decomposition on a source image through an AFD method to generate two groups of key streams, and then performing pixel position scrambling and pixel bit scrambling operations on a plaintext image. The source image adopted by the method can be any image on the network or a newly generated image, the size of the source image is kept consistent with that of a plaintext image, the obtained encrypted image can efficiently resist selected plaintext attack, selected ciphertext attack and statistical attack, meanwhile, the invention has high robustness to noise attack and shearing attack. The method can indirectly realize the one-time pad encryption effect, further improves the security and robustness of the encrypted image, and can be applied to the fields of image security and image secret communication.

Description

technical field [0001] The present invention relates to the image encryption technology in the field of communication, more specifically, relates to a double reset scrambled image encryption method based on AFD adaptive decomposition. Background technique [0002] With the rapid development of Internet communication technology and social media networks, more and more images and videos with private and confidential information are generated, exchanged and stored on public networks and cloud platforms. The dramatic growth of images and videos has made people pay more and more attention to how to ensure their confidentiality and integrity and how to prevent them from leaking information and conducting various security analysis. Therefore, the privacy protection of images and videos has attracted extensive attention of cryptographers in the past few decades. [0003] Different from traditional text messages, digital images have the characteristics of large data capacity, strong...

AI Technical Summary

Problems solved by technology

Although this increases the security of the image, it increases the amount of data transmitted by the key

[0004] In order to design an image encryption method with strong security, it is difficult to further improve the security and reliability of the algorithm if the image is encrypted based on the traditional key stream generation method.

Images