A Data Collector Encryption Method Based on Improved National Secret SM2 Encryption Algorithm

Abstract

The invention provides an encryption method for a data collector based on an improved national secret SM2 encryption algorithm. The national secret SM2 algorithm includes elliptic curve encryption algorithm, digital signature algorithm, etc. The improved national secret SM2 encryption algorithm completes the data encryption of the collector by the fusion algorithm of elliptic curve encryption algorithm and MD5withRSA digital signature. The specific steps are as follows: Step 1: Select the relevant public key parameters; Step 2: Calculate the signature parameters of the message sender; Step 3: Generate ciphertext; Step 4: Verify the legitimacy of the message when it is decrypted; Step 5: To restore the message, a specific improvement scheme for improving the national secret SM2 encryption algorithm and a specific encryption process for the improved encryption algorithm are proposed, so that the improved encryption algorithm has the functions of message encryption and digital signature at the same time. Moreover, the improved national secret SM2 encryption algorithm has the advantages of rapid generation and easy implementation, which greatly meets the needs of engineering projects. Finally, the proposal of the patent of the present invention can meet the security requirements of the data collector in the IAS.

Description

technical field [0001] The invention relates to the field of information encryption of an electric power collection system, in particular to an encryption method for a data collector based on an improved national secret SM2 encryption algorithm. Background technique [0002] In the smart grid, the intelligent acquisition system (intelligent acquisition system, IAS) data collector is a key communication message transmission device, which undertakes the two-way communication task between the national grid metering center and users. In the IAS, the data collector adopts an embedded system, and the loopholes in the computer network system also exist in the data collector. It is necessary to ensure the security of the communication message, including that the message is not deliberately tampered with, leaked, etc. Otherwise, it will pose a serious threat to the user's safety, reliable electricity demand and the safe and stable operation of the power system, and may even cause cat...

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Problems solved by technology

[0005] The purpose of the present invention is to propose a data collector encryption method based on the improved national secret SM2 encryption algorithm, aiming at one-stop solution to the problems that will be faced when using the ECC encryption algorithm in the data collector, so as to meet the security requirements of the data collector communication message and improve the information security level of IAS

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