Medical data encryption and decryption method based on data segmentation

Abstract

The invention discloses a medical data encryption and decryption method based on data segmentation, and belongs to the technical field of cryptography and information security, and the encryption and decryption method comprises the following specific steps: (1) carrying out Hash calculation; (2) performing data segmentation; (3) respectively encrypting; (4) generating a medical data ciphertext; (5) carrying out ciphertext segmentation and data element stream transmission and storage; (6) analyzing the data element flow; (7) decrypting and verifying; the invention provides a medical data encryption and decryption method based on data segmentation according to the characteristics of medical data in combination with cryptography and data streams in allusion to the security defects and urgent medical data protection requirements of a single encryption mode at present. The encryption and decryption dynamic library for medical treatment and medical files is generated according to the method, can be used for encryption and decryption of medical data files and can also be used for encryption and decryption in a medical data flow mode, and safe transmission and storage of medical data are achieved.

Description

technical field [0001] The invention relates to the technical fields of cryptography and information security, in particular to a method for encrypting and decrypting medical data based on data segmentation. Background technique [0002] After retrieval, Chinese Patent No. CN104967665A discloses a compression and encryption transmission system of medical image file information. Although the inventive method speeds up the transmission speed and saves a lot of memory space, it is easy to be cracked; the safe transmission and storage of medical data has always been an important aspect of medical technology. It is an important research topic; with the rapid development of computer application technology, especially the large-scale new application of cloud storage and cloud computing, which is oriented to regional health, medical and health service centers and other applications, the amount of medical and health data is increasing rapidly. Data has become a hot treasure. How to p...

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Problems solved by technology

[0002] After retrieval, Chinese Patent No. CN104967665A discloses a compression and encryption transmission system of medical image file information. Although the inventive method speeds up the transmission speed and saves a lot of memory space, it is easy to be cracked; the safe transmission and storage of medical data has always been an important aspect of medical technology. It is an important research topic; with the rapid development of computer application technology, especially the large-scale new application of cloud storage and cloud computing, which is oriented to regional health, medical and health service centers and other applications, the amount of medical and health data is increasing rapidly. Data has become a hot treasure. How to protect the personal privacy involved in medical and health data without affecting the mining and application has become a current research hotspot; the development of cryptography technology, electronic technology, microcomputer technology and Internet technology has prompted continuous research in the field of medical encryption and decryption. New encryption methods or methods have emerged, and two encryption modes have basically formed, namely hardware encryption and software encryption; although traditional hardware systems have the characteristics of fast encryption and decryption and simple hardware implementation, there are also difficulties in expanding capacity and changing encoding methods. However, the existing medical software encryption with a single encryption mode still has problems such as being easy to be cracked; therefore, It is particularly important to invent medical data encryption and decryption methods based on data segmentation;

[0003] Most of the existing medical data encryption and decryption methods adopt the traditional hardware encryption mode or the traditional software encryption mode. The shortcomings of large information transmission volume or anti-information attack, but the single encryption mode of traditional software encryption mode is easy to be cracked; for this reason, we propose a medical data encryption and decryption method based on data segmentation

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