Double mapping method for on-chain representation and off-chain security edge storage of medical image

Abstract

The invention provides a medical image on-chain representation and under-chain secure edge storage method based on a block chain technology, a trusted computing technology and a compressed sensing encryption and decryption image technology. Generating a first hash chain and a second hash chain according to the initial key by using an image encryption method based on hash chain compressed sensing; and obtaining a measurement matrix and an encryption matrix according to the first hash chain and the second hash chain, obtaining a measurement result matrix through the original image and the measurement matrix, and obtaining an encryption image matrix through the measurement result matrix and the encryption matrix. And hashing the measurement matrix again to obtain a hash value of the measurement matrix, and storing the medical image related information, the hash value of the measurement matrix and the node signature into the block chain. And storing the encrypted image matrix in a node local space. In the whole process, existence proof, namely on-chain representation of the medical image, of the medical image is achieved, the image is safely stored in a node local space, namely under-chain safe edge storage is achieved, and bidirectional mapping of the medical image and the under-chain safe edge storage is achieved through uniquely-identified medical data information and the hash value of an image measurement matrix.

Description

Technical field [0001] The present invention relates to medical image information encryption and secure storage, sharing technology, in particular to an on-chain representation of medical images and off-chain secure edge storage methods. Background [0002] Due to the impact of network, security and stability reasons, hospitals generally establish image storage and transmission systems to archive, store and communicate hospital image data. However, with the continuous improvement of the accuracy of digital diagnostic equipment and the increasing number of patients, there are obviously many problems and deficiencies in the use of traditional image storage and transmission systems. [0003] (1) The operating systems, databases and storage devices used by major image storage and transmission system software manufacturers are not the same, which makes each set of image storage and transmission systems not only completely heterogeneous in software and hardware, but also lack interope...

AI Technical Summary

Problems solved by technology

This makes the image storage and transmission systems of most hospitals need to be expanded once in a few years. However, the expansion work is not only a huge investment, but also difficult to expand each time, and the performance is getting lower and lower.

[0005] (3) Since the image storage and transmission system storage platform of each hospital is not uniform enough, and the storage interface is also chaotic, it is difficult to realize the sharing of image storage and transmission system information between hospitals

In order to realize the area sharing of the image storage and transmission system, data sharing must be carried out from the medical digital imaging and communication interface, which will lead to a large number of changes in the application of the image storage and transmission system.

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