CN113721956B - Method for updating excitation system control program - Google Patents

Abstract

The invention discloses a method for updating an excitation system control program, which includes: obtaining the control program file of the excitation system, obtaining corresponding characteristic data after calculation by an encryption algorithm; combining the characteristic data and the control program file to form encrypted information; Start the update program and load the encrypted information into the update program; extract the characteristic data in the encrypted information in the update program to verify the integrity of the control program file; determine whether the control program file is complete based on the verification results; if so, update the program control file to the excitation system; if not, repeat the loading and verification of encrypted information. The present invention encrypts the update file of the control program of the excitation system to improve the integrity and ease of verification of the control program file used in the update, thereby improving the stability and security of the excitation system.

Description

A method for updating control program of excitation system

Technical field

The invention relates to the technical field of excitation system updating, and is a method for updating an excitation system control program.

Background technique

The excitation system is a general term for the equipment and its ancillary devices that provide excitation current for synchronous generators or synchronous motors. It is generally composed of two main parts: an excitation power unit and an excitation regulating unit. In recent years, due to the emergence and application of new technologies, new processes and new devices, excitation devices have been continuously developed and improved. Especially in terms of excitation regulating units, more and more new digital and highly intelligent regulating units have appeared.

As the degree of digitization of the excitation system adjustment unit increases, the information security issues of the excitation system have attracted more and more attention from the industry. The excitation system adjustment unit generally consists of a control device and a control program, and its main control logic is implemented by the control program. Improving the safety of the control program plays an important role in the overall safety of the excitation system. When the control program of the excitation system is updated, if the control program file used for the update is damaged or maliciously modified, it will seriously affect the working stability and information security of the excitation system. In the prior art, during the update process of the control program of the excitation system, no corresponding measures are taken to protect the excitation system, making the control program files susceptible to malicious modification.

Contents of the invention

In order to overcome the technical defect in the above-mentioned prior art that the control program file of the excitation system is easily modified, the present invention provides a method for updating the control program of the excitation system.

In order to solve the above problems, the present invention is implemented according to the following technical solutions:

The invention discloses a method for updating an excitation system control program, which includes:

Obtain the control program file of the excitation system, and obtain the corresponding characteristic data after calculation with an encryption algorithm;

After combining the characteristic data and the control program file, encrypted information is formed;

Start the update program and load the encrypted information into the update program;

Extract characteristic data from encrypted information in the update program to verify the integrity of the control program file;

Determine whether the control program file is complete based on the verification results;

If so, update the program control file to the excitation system;

If not, repeat the loading and verification of the encrypted information.

As a preferred implementation, the repeated execution of loading and verification of encrypted information specifically includes:

Display update failure information and wait for user operation;

If the user reloads the encrypted information into the update program, the feature data in the encrypted information is extracted and verified again;

If the user does not reload the encrypted information, the update of the control program ends.

As a preferred implementation, the corresponding feature data is obtained after calculation by the encryption algorithm, specifically including:

After calculating the data encryption algorithm in the control program file, several characteristic values uniquely associated with the data in the control program file are obtained to form characteristic data.

As a preferred implementation, when combining the feature data and the control program file, the specific combination method is to insert the feature values in the feature data into the control program file in sequence.

As a preferred implementation, the characteristic values are inserted into the control program file in sequence, specifically including:

Several insertion positions are set in the control program file in advance, and the characteristic values in the characteristic data are sequentially inserted into the insertion positions of the control program file to form encrypted information composed of characteristic data mixed inside the control program file.

As a preferred implementation, after loading the encrypted information into the update program, the following is also executed:

Verification information is loaded into the update program, where the verification information includes feature data and positioning information corresponding to the insertion position of the feature data in the control program file.

As a preferred implementation, the extraction of feature data in encrypted information specifically includes:

The update program analyzes the verification information and obtains the positioning information of the insertion position. Based on the positioning information of the insertion position, feature values are extracted from the encrypted information in sequence, and the feature values are sorted in order to form feature data.

As a preferred implementation, the verification of the integrity of the control program file specifically includes:

After extracting the characteristic values in the encrypted information, obtain the control program file, calculate the control program file based on the encryption algorithm and obtain the corresponding comparison data, compare the comparison data with the characteristic data, and verify the control based on the comparison results. Integrity of program documentation.

Compared with the prior art, the beneficial effects of the present invention are:

The present invention realizes encryption by combining the control program file with the characteristic data, so that the control program file is encrypted before being distributed. When the control program of the excitation system is updated, the integrity of the control program file can be verified to achieve Detect whether the control program file is damaged or maliciously modified, thereby ensuring the integrity of the control program file updated to the excitation system, thereby improving the stability of the excitation system operation.

Description of the drawings

The specific embodiments of the present invention will be described in further detail below with reference to the accompanying drawings, wherein:

Figure 1 is a schematic flowchart of the method for updating the excitation system control program of the present invention.

Detailed ways

The preferred embodiments of the present invention will be described below with reference to the accompanying drawings. It should be understood that the preferred embodiments described here are only used to illustrate and explain the present invention, and are not intended to limit the present invention.

Preferred embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. Although the preferred embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure may be implemented in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the disclosure to those skilled in the art.

As used herein, the term "include" and its variations mean an open inclusion, ie, "including but not limited to." Unless otherwise stated, the term "or" means "and/or". The term "based on" means "based at least in part on." The terms "one example embodiment" and "an embodiment" mean "at least one example embodiment." The term "another embodiment" means "at least one additional embodiment". The terms "first," "second," etc. may refer to different or the same object. Other explicit and implicit definitions may be included below.

As shown in Figure 1, it is a preferred flow chart of the updating method of the excitation system control program according to the present invention.

The invention discloses a method for updating an excitation system control program, which includes the following steps:

Step S1: Obtain the control program file of the excitation system, and obtain the corresponding characteristic data after calculation by the encryption algorithm.

Specifically, the control program file used in the update of the control program in the excitation system is obtained. The control program file is written by the operator. After inputting the data in the control program file into the encryption algorithm for calculation, the control program file is obtained and Characteristic data composed of several characteristic values uniquely associated with the data.

Step S2: Combine the characteristic data and the control program file to form encrypted information.

Specifically, the control program file and the characteristic data are combined with each other to form corresponding encrypted information that has been encrypted by the characteristic data. By adding the characteristic data in a specific order in the control program file, or by splitting the characteristic data, the characteristics are separately Several portions of the data are inserted into the control program file to achieve simple but difficult-to-break encryption.

In this embodiment, preferably, when combining the feature data and the control program file, the specific combination method is to insert the feature values in the feature data into the control program file in sequence. Several insertion positions are set in the control program file in advance, and the characteristic values in the characteristic data are sequentially inserted into the insertion positions of the control program file to form encrypted information composed of the characteristic data mixed inside the control program file.

It should be noted that in addition to inserting feature values in sequence, the feature values can also be randomly shuffled and inserted into the feature data out of order, and the corresponding insertion position is recorded after insertion to facilitate retrieval in subsequent processing.

Step S3: Start the update program and load the encrypted information into the update program.

Specifically, the update program is started. The update program is an update program corresponding to the control program in the excitation system. After the update program loads the control program file, the control program of the excitation system can be updated. In this application, the update program also has analytical information. and the ability to verify the integrity of control program files.

Preferably, it also includes sub-step S31: loading verification information into the update program, where the verification information includes feature data and positioning information corresponding to the insertion position of the feature data in the control program file.

By using the verification information loaded into the update program as a baseline, since the verification information includes the complete data characteristics of the characteristic data, as well as the specific location and insertion sequence of the characteristic data in the control program file, the update program can perform corresponding positioning of the encrypted information. And the extraction of sequential characteristic data realizes the decoding of encrypted information, thereby enabling subsequent verification of the integrity of the control program file.

Step S4: Extract the characteristic data in the encrypted information in the update program and verify the integrity of the control program file.

Specifically, when extracting feature information in encrypted information, after the update program analyzes the verification information, the positioning information of the insertion position is obtained. Based on the positioning information of the insertion position, feature values are extracted in the encrypted information in sequence, and the features are extracted. The values are sorted in order to form feature data.

Then, after extracting the characteristic values in the encrypted information, obtain the control program file, calculate the control program file based on the encryption algorithm to obtain the corresponding comparison data, compare the comparison data with the characteristic data, and based on the comparison results Verify the integrity of the control program files.

Step S5: Determine whether the control program file is complete based on the verification result.

Specifically, after taking out the characteristic data in the encrypted information, the control program file can be obtained, and the obtained control program file can be re-encrypted through the encryption program to obtain new characteristic data, using the new characteristic data and the extracted old characteristics. The data is compared for matching, and the integrity of the control program file is verified based on the comparison results.

Step S51: If yes, update the program control file to the excitation system.

Specifically, if the new characteristic data is exactly the same as the old characteristic data, it means that the encrypted information and control program files are complete and have not been damaged or maliciously modified during the transmission process. The update program can directly execute the control program file to update the control program of the excitation system.

Step S52: If not, repeat the loading and verification of the encrypted information. Thereby re-executing the verification or directly terminating the update of the control program.

As a preferred implementation, the repeated execution of loading and verification of encrypted information specifically includes:

Display update failure information and wait for user operation;

If the user reloads the encrypted information into the update program, the feature data in the encrypted information is extracted and verified again;

If the user chooses not to reload the encrypted information, the update of the control program ends.

The present invention realizes encryption by combining the control program file with the characteristic data, so that the control program file is encrypted before being distributed. When the control program of the excitation system is updated, the integrity of the control program file can be verified to achieve Detect whether the control program file is damaged or maliciously modified, thereby ensuring the integrity of the control program file updated to the excitation system, thereby improving the stability of the excitation system operation.

Other structures of the method for updating the excitation system control program described in this embodiment can be found in the prior art.

The disclosure may be a method, apparatus, system and/or computer program product. A computer program product may include a computer-readable storage medium having thereon computer-readable program instructions for performing various aspects of the present disclosure.

Computer-readable storage media may be tangible devices that can retain and store instructions for use by an instruction execution device. The computer-readable storage medium may be, for example, but not limited to, an electrical storage device, a magnetic storage device, an optical storage device, an electromagnetic storage device, a semiconductor storage device, or any suitable combination of the above. More specific examples (non-exhaustive list) of computer-readable storage media include: portable computer disks, hard disks, random access memory (RAM), read-only memory (ROM), erasable programmable read-only memory (EPROM) or Flash memory), Static Random Access Memory (SRAM), Compact Disk Read Only Memory (CD-ROM), Digital Versatile Disk (DVD), Memory Stick, Floppy Disk, Mechanical Coding Device, such as a printer with instructions stored on it. Protruding structures in hole cards or grooves, and any suitable combination of the above. As used herein, computer-readable storage media are not to be construed as transient signals per se, such as radio waves or other freely propagating electromagnetic waves, electromagnetic waves propagating through waveguides or other transmission media (e.g., light pulses through fiber optic cables), or through electrical wires. transmitted electrical signals.

Computer-readable program instructions described herein may be downloaded from a computer-readable storage medium to various computing/processing devices, or to an external computer or external storage device over a network, such as the Internet, a local area network, a wide area network, and/or a wireless network. The network may include copper transmission cables, fiber optic transmission, wireless transmission, routers, firewalls, switches, gateway computers, and/or edge servers. A network adapter card or network interface in each computing/processing device receives computer-readable program instructions from the network and forwards the computer-readable program instructions for storage on a computer-readable storage medium in the respective computing/processing device .

Computer program instructions for performing operations of the present disclosure may be assembly instructions, instruction set architecture (ISA) instructions, machine instructions, machine-related instructions, microcode, firmware instructions, state setting data, or instructions in one or more programming languages. Source code or object code written in any combination of object-oriented programming languages such as Smalltalk, C++, etc., and conventional procedural programming languages such as "C" or similar programming languages. The computer-readable program instructions may execute entirely on the user's computer, partly on the user's computer, as a stand-alone software package, partly on the user's computer and partly on a remote computer or entirely on the remote computer or server implement. In situations involving remote computers, the remote computer can be connected to the user's computer through any kind of network, including a local area network (LAN) or a wide area network (WAN), or it can be connected to an external computer (such as an Internet service provider through the Internet). connect). In some embodiments, by utilizing state information of computer-readable program instructions to personalize an electronic circuit, such as a programmable logic circuit, a field programmable gate array (FPGA), or a programmable logic array (PLA), the electronic circuit can Computer readable program instructions are executed to implement various aspects of the disclosure.

Aspects of the present disclosure are described herein with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems) and computer program products according to embodiments of the disclosure. It will be understood that each block of the flowchart illustrations and/or block diagrams, and combinations of blocks in the flowchart illustrations and/or block diagrams, can be implemented by computer-readable program instructions.

These computer-readable program instructions may be provided to a processing unit of a general-purpose computer, a special-purpose computer, or other programmable data processing apparatus, thereby producing a machine such that the instructions, when executed by a processing unit of the computer or other programmable data processing apparatus, , resulting in an apparatus that implements the functions/actions specified in one or more blocks in the flowchart and/or block diagram. These computer-readable program instructions can also be stored in a computer-readable storage medium. These instructions cause the computer, programmable data processing device and/or other equipment to work in a specific manner. Therefore, the computer-readable medium storing the instructions includes An article of manufacture that includes instructions that implement aspects of the functions/acts specified in one or more blocks of the flowcharts and/or block diagrams.

Computer-readable program instructions may also be loaded onto a computer, other programmable data processing apparatus, or other equipment, causing a series of operating steps to be performed on the computer, other programmable data processing apparatus, or other equipment to produce a computer-implemented process , thereby causing instructions executed on a computer, other programmable data processing apparatus, or other equipment to implement the functions/actions specified in one or more blocks in the flowcharts and/or block diagrams.

The flowcharts and block diagrams in the figures illustrate the architecture, functionality, and operation of possible implementations of systems, methods, and computer program products according to various embodiments of the present disclosure. In this regard, each block in the flowchart or block diagrams may represent a module, segment, or portion of instructions that contains one or more operable functions for implementing the specified logical functions. Execute instructions. In some alternative implementations, the functions noted in the block may occur out of the order noted in the figures. For example, two consecutive blocks may actually execute substantially in parallel, or they may sometimes execute in the reverse order, depending on the functionality involved. It will also be noted that each block of the block diagram and/or flowchart illustration, and combinations of blocks in the block diagram and/or flowchart illustration, can be implemented by special purpose hardware-based systems that perform the specified functions or acts. , or can be implemented using a combination of specialized hardware and computer instructions.

The various embodiments of the present disclosure have been described above. The above description is illustrative, not exhaustive, and is not limited to the disclosed embodiments. Many modifications and variations will be apparent to those skilled in the art without departing from the scope and spirit of the described embodiments. The terminology used herein is chosen to best explain the principles of the various embodiments, practical applications, or improvements to the technology in the market, or to enable other persons of ordinary skill in the art to understand the various embodiments disclosed herein.

Claims (4)

1. A method for updating the excitation system control program, which is characterized by including: Obtain the control program file of the excitation system, and obtain the corresponding characteristic data after calculation by an encryption algorithm. The characteristic data consists of several characteristic values; Encrypted information is formed after combining the characteristic data and the control program file. The combination is to add the characteristic data in a specific order in the control program file or to insert several parts of the split characteristic data into the control program file respectively. The above characteristic values are inserted into the program file in sequence, which specifically includes: setting several insertion positions in the control program file in advance, inserting the characteristic values in the characteristic data into the insertion positions of the control program file in sequence, forming an internal structure of the control program file. Encrypted information composed of characteristic data; Start the update program, load the encrypted information into the update program, and load the verification information into the update program, where the verification information includes feature data and positioning information corresponding to the insertion position of the feature data in the control program file; The update program analyzes the verification information and obtains the positioning information of the insertion position. Based on the positioning information of the insertion position, the feature values are extracted from the encrypted information in sequence, and the feature values are sorted in sequence to form feature data; After extracting the characteristic values in the encrypted information, obtain the control program file, calculate the control program file based on the encryption algorithm and obtain the corresponding comparison data, compare the comparison data with the characteristic data, and verify the control based on the comparison results. Integrity of program documentation; Determine whether the control program file is complete based on the verification results; If so, update the program control file to the excitation system; If not, repeat the loading and verification of the encrypted information. 2. The method for updating the excitation system control program according to claim 1, characterized in that the repeated execution of loading and verification of encrypted information specifically includes: Display update failure information and wait for user operation; If the user reloads the encrypted information into the update program, the feature data in the encrypted information is extracted and verified again; If the user does not reload the encrypted information, the update of the control program ends. 3. The method for updating the excitation system control program according to claim 1, characterized in that the corresponding characteristic data is obtained after calculation by an encryption algorithm, specifically including: After inputting the data in the control program file into the encryption algorithm for calculation, data composed of several characteristic values uniquely associated with the data in the control program file is obtained. 4. The method for updating the excitation system control program according to claim 3, characterized in that: In the combination of feature data and control program files, the specific combination method is to insert the feature values in the feature data into the control program file in sequence.