Two-Round Symmetric Cryptography for Medical Image Infosecurity Against-Hacker Attacks in a Picture Archiving and Communication System

Jian-Xing Wu,Chao-Lin Kuo,Pi-Yun Chen,Yu-Chi Pu,Chih-Hsien Li,Neng-Sheng Pai,Chia-Hung Lin

doi:10.1109/access.2020.3028077

Abstract

Digitalizing medical images, such as images in ultrasonography or mammography, or magnetic resonance imaging, can be applied for telemedicine applications in telediagnosis and telesurgery, and can be stored in a cloud database via computer networking transmission or wireless communications. Besides, these images contain the patient privacy information. Thus, their reliability and availability should be protected to ensure medical image infosecurity in public channels or open spaces. Medical images can also be hacked by unauthorized people. Therefore, in the picture archiving and communication system (PACS), this study proposes against-hacker attacks with two-round symmetric cryptography models for medical image infosecurity. Hash transformation with multi secret keys is performed to change the pixel values and produce dynamic errors for the two-round encryption processes. In image decryption, two-round decryption processes are employed to estimate the possible hacker attacks at the routing path and to determine the decryption key parameter by using an optimization-based controller. For a case study of mammographic images consisting of 50 benign tumors and 50 malignant tumors, the peak signal-to-noise ratio (PSNR) is employed to evaluate the decryption quality between the plain and decrypted images.

Highlights

Network security attacks are unauthorized actions used to crack private and corporate resources, data, and applications, which intercept the transit of information to modify, steal, and copy the content of messages, such as plain words, plain texts, and plain images
A two-round symmetric cryptography method against-hacker attack had been proposed for digital X-ray images in this study
Multisecret keys were generated by chirp function

Summary

Introduction

Network security attacks are unauthorized actions used to crack private and corporate resources, data, and applications, which intercept the transit of information to modify, steal, and copy the content of messages, such as plain words, plain texts, and plain images. In Taiwan, the Health Bureau public health information system was hacked These events were the most serious data breach incidents in recent years. Ensuring that these digital data will not be stolen, tampered with, damaged, nor lost after transfer by unauthorized people has become a major concern in computer network communication, especially with regard to medical images

Methods

Results

Conclusion