Information encryption method of power system information communication network

Abstract

The invention discloses an information encryption method for an information communication network of a power system, belongs to the technical field of information communication, and aims to solve the problems of unreasonable encryption mode and poor encryption effect of a communication information encryption secure transmission method of an existing power system. The method comprises the following steps: constructing a communication channel model by adopting a channel equalization method, and carrying out noise reduction processing on the communication channel model by adopting a filtering suppression method; introducing an improved AES communication algorithm into the established communication channel model, and carrying out confusion encryption processing on transmission information; and carrying out encryption processing on the transmission information after the confusion encryption processing by adopting a secret key. The method is used for performing security protection on the communication network of the power system.

Description

Technical Field

[0001] The invention relates to an information encryption method for an electric power system information communication network, belonging to the technical field of information communication. Background Art

[0002] The information communication network of the power system is the infrastructure for realizing the command and control of the power system, and can be used to obtain, transmit and store various information. Realizing information security encryption of the power system communication network plays an important role in protecting sensitive information in the power system information communication network, preventing information leakage and improving communication security.

[0003] The method of secure transmission of communication information encryption is an effective means to prevent unauthorized access and data leakage. The basic idea is to convert plaintext information into ciphertext through encryption algorithm to protect the confidentiality and integrity of information. Only with the correct key can the attacker crack the ciphertext and obtain the original information. At present, the most common communication information encryption algorithm is the AES (Advanced Encryption standard) algorithm, which has been widely used in various communication fields. However, with the improvement of computing power and the diversification of attack methods, the AES algorithm has the problem of unreasonable encryption processing and poor encryption effect in the information communication network security of power systems. Summary of the invention

[0004] The purpose of the present invention is to solve the problems that the encryption method is not reasonable and the encryption effect is poor in the existing method for securely transmitting communication information encrypted in the power system, and to provide an information encryption method for the information communication network of the power system.

[0005] The present invention provides an information encryption method for an electric power system information communication network, which comprises:

[0006] S1. Use the channel equalization method to build a communication channel model, and use the filtering suppression method to perform noise reduction on the communication channel model;

[0007] S2. Introduce the improved AES communication algorithm into the established communication channel model to perform obfuscated encryption on the transmitted information;

[0008] S3. Use a key to encrypt the transmission information after the obfuscated encryption process.

[0009] Preferably, the specific method of constructing the communication channel model in S1 includes:

[0010] Communication channel model U:

[0011] U=(K,KC,ER) T ;

[0012] Among them, K represents the channel coding link distribution set of the communication network, KC represents the number of array element signal shifts, and ER represents the minimum number of bits.

[0013] Preferably, the specific method of introducing the improved AES communication algorithm into the established communication channel model in S2 to encrypt the transmission information includes:

[0014] Divide the transmission information into a plurality of sequence segments to be encrypted, and perform encryption processing on each sequence segment to be encrypted respectively;

[0015] The encryption process for each sequence segment to be encrypted includes:

[0016] The encrypted sequence segments are subjected to data row confusion transformation and data column confusion transformation in sequence.

[0017] Preferably, the specific method of using a key to encrypt the transmission information after obfuscated encryption processing in S3 includes:

[0018] Set the key Y of an arbitrary sequence:

[0019] Y = h(ξ+ζ)×i;

[0020] Among them, ξ represents the control parameter of the sequence segment to be encrypted, ζ represents the control parameter of the remaining sequence segments, i represents the number of encryption times, and h represents an arbitrary sequence;

[0021] Perform shift calculation on ξ and ζ to obtain the extended key Y';

[0022] The extended key Y' is used to encrypt the transmission information after the obfuscated encryption process.

[0023] Advantages of the present invention: The present invention proposes an information encryption method for an electric power system information communication network, which can safely and effectively encrypt information of the electric power system information communication network, reduce the leakage of privacy information, avoid the leakage of data transmitted during data sharing, and improve the security and stability of the electric power system communication network. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a flowchart of the information encryption method of the power system information communication network described in the present invention. DETAILED DESCRIPTION

[0025] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0026] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features in the embodiments may be combined with each other.

[0027] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments, but they are not intended to limit the present invention.

[0028] Embodiment 1:

[0029] Combine the following Figure 1 This embodiment describes an information encryption method for an electric power system information communication network, which includes:

[0030] S1. Use the channel equalization method to build a communication channel model, and use the filtering suppression method to perform noise reduction on the communication channel model;

[0031] S2. Introduce the improved AES communication algorithm into the established communication channel model to perform obfuscated encryption on the transmitted information;

[0032] S3. Use a key to encrypt the transmission information after the obfuscated encryption process.

[0033] Furthermore, the specific method of constructing the communication channel model in S1 includes:

[0034] Communication channel model U:

[0035] U=(K,KC,ER) T ;

[0036] Among them, K represents the channel coding link distribution set of the communication network, KC represents the number of array element signal shifts, and ER represents the minimum number of bits.

[0037] Furthermore, the specific method of introducing the improved AES communication algorithm into the established communication channel model in S2 to encrypt the transmitted information includes:

[0038] Divide the transmission information into a plurality of sequence segments to be encrypted, and perform encryption processing on each sequence segment to be encrypted respectively;

[0039] The encryption process for each sequence segment to be encrypted includes:

[0040] The encrypted sequence segments are subjected to data row confusion transformation and data column confusion transformation in sequence.

[0041] Furthermore, the specific method of using a key to encrypt the transmission information after the obfuscated encryption process in S3 includes:

[0042] Set the key Y of an arbitrary sequence:

[0043] Y = h(ξ+ζ)×i;

[0044] Among them, ξ represents the control parameter of the sequence segment to be encrypted, ζ represents the control parameter of the remaining sequence segments, i represents the number of encryption times, and h represents an arbitrary sequence;

[0045] Perform shift calculation on ξ and ζ to obtain the extended key Y';

[0046] The extended key Y' is used to encrypt the transmission information after the obfuscated encryption process.

[0047] Although the present invention is described herein with reference to specific embodiments, it should be understood that these embodiments are merely examples of the principles and applications of the present invention. It should therefore be understood that many modifications may be made to the exemplary embodiments and that other arrangements may be devised without departing from the spirit and scope of the present invention as defined by the appended claims. It should be understood that the various dependent claims and features described herein may be combined in a manner different from that described in the original claims. It should also be understood that features described in conjunction with individual embodiments may be used in other described embodiments.

Claims

1. A method for encrypting information in an electric power system information communication network, characterized in that: It includes: S1. Use the channel equalization method to build a communication channel model, and use the filtering suppression method to perform noise reduction on the communication channel model; S2. Introduce the improved AES communication algorithm into the established communication channel model to perform obfuscated encryption on the transmitted information; S3. Use a key to encrypt the transmission information after the obfuscated encryption process.

2. The information encryption method of the power system information communication network according to claim 1 is characterized in that: The specific method of constructing the communication channel model described in S1 includes: Communication channel model U: U=(K,KC,ER) T ; Among them, K represents the channel coding link distribution set of the communication network, KC represents the number of array element signal shifts, and ER represents the minimum number of bits.

3. The information encryption method of the power system information communication network according to claim 1 is characterized in that: S2 introduces the improved AES communication algorithm into the established communication channel model, and the specific method for encrypting the transmission information includes: Divide the transmission information into a plurality of sequence segments to be encrypted, and perform encryption processing on each sequence segment to be encrypted respectively; The encryption process for each sequence segment to be encrypted includes: The encrypted sequence segments are subjected to data row confusion transformation and data column confusion transformation in sequence.

4. The information encryption method of the power system information communication network according to claim 1 is characterized in that: The specific method of using a key to encrypt the transmission information after obfuscated encryption processing in S3 includes: Set the key Y of an arbitrary sequence: Y=h(ξ+ζ)×i; Among them, ξ represents the control parameter of the sequence segment to be encrypted, ζ represents the control parameter of the remaining sequence segments, i represents the number of encryption times, and h represents an arbitrary sequence; Perform shift calculation on ξ and ζ to obtain the extended key Y'; The extended key Y' is used to encrypt the transmission information after the obfuscated encryption process.

Images