Electronic medical record hybrid encryption method based on SM2 and SM4

Abstract

The invention discloses an electronic medical record hybrid encryption method based on SM2 and SM4. A plaintext is encrypted by using a secret key generated by an SM4 algorithm, then the secret key ofthe SM4 algorithm is encrypted by using an SM2 algorithm, and the hybrid encryption scheme is applied to electronic medical record encryption, so that the defects of a single encryption algorithm inan actual application scene are overcome, the electronic medical record is encrypted and decrypted quickly, and the security of the electronic medical record is improved; an SM2 algorithm encryption process is realized on the ARM processor; hardware optimization of an SM2 algorithm is achieved through an ARM processor so as to improve the encryption speed, a hardware circuit adopts a layered design method, a core operation layer is a point multiplication circuit, a second layer is a point addition and point multiplication operation circuit, a third layer is a modular operation circuit, and therefore multiplexing of circuit functions and hardware resources of all layers is achieved.

Description

technical field [0001] The invention relates to the technical field of encryption of electronic medical records, in particular to a mixed encryption method for electronic medical records based on SM2 and SM4. Background technique [0002] With the rapid development of electronic information, electronic medical records have gradually become the core of hospital digital management. It enables hospitals to know the current situation of patients in a timely manner and make corresponding treatment plans. It is an important resource for clinical research. However, as the carrier of electronic medical records, a large amount of data needs to be stored and transmitted in the hospital information system. During the entire life cycle of electronic medical records, including the process of generation, transmission, storage, and reuse, accidental or malicious reasons may cause data damage. , reveal, lose or change, so it is very important to establish a secure electronic medical record ...

AI Technical Summary

Problems solved by technology

These information security encryption schemes in the medical field usually use a single cryptographic algorithm for encryption, which is difficult to comprehensively consider the speed and security of encryption, and the implementation of the algorithm is usually done on software, which is relatively slow and cannot better protect the security of electronic medical records. the goal of

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