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An Encryption Algorithm for Region of Interest in Medical DICOM Based on One-Dimensional e-cos-cot Map.

Xin Meng^1,2, Jinqing Li^1,2, Xiaoqiang Di^1,2,3

¹School of Computer Science and Technology, Changchun University of Science and Technology, Changchun 130022, China.

Entropy (Basel, Switzerland)

|July 27, 2022

Summary

This summary is machine-generated.

This study introduces a new chaotic system for region of interest (ROI) encryption of medical images. The proposed method enhances image security and encryption efficiency using a novel chaotic algorithm and DICOM data.

Keywords:

1D eλ-cos-cot map chaotic performance medical image encryption region of interest selective image encryption

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Area of Science:

Computer Science
Cryptography
Medical Imaging

Background:

The increasing use of the internet necessitates enhanced image security.
Traditional encryption methods may lack efficiency for complex medical images.

Purpose of the Study:

To propose a novel region of interest (ROI) encryption algorithm for medical images.
To improve both the security and efficiency of medical image encryption.

Main Methods:

A new 1D eλ-cos-cot (1D-ECC) chaotic system was developed for superior chaotic performance.
A plaintext-related keystream was generated using DICOM file label information.
Medical images were segmented using an adaptive threshold, with the ROI undergoing encryption.
Encryption involved a two-stage process: scrambling (helical scanning and index scrambling) and two-dimensional bi-directional diffusion.

Main Results:

The proposed 1D-ECC chaotic system demonstrated better performance than traditional systems.
The algorithm achieved effective encryption of the region of interest in medical images.
Simulation results and security analysis indicated good encryption speed and security performance.

Conclusions:

The novel ROI encryption algorithm effectively enhances medical image security.
The proposed method offers a promising solution for efficient and secure medical image encryption.