CN110601854B - Authorization client, power distribution terminal equipment and authorization method thereof - Google Patents
Authorization client, power distribution terminal equipment and authorization method thereof Download PDFInfo
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- CN110601854B CN110601854B CN201910889169.XA CN201910889169A CN110601854B CN 110601854 B CN110601854 B CN 110601854B CN 201910889169 A CN201910889169 A CN 201910889169A CN 110601854 B CN110601854 B CN 110601854B
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L9/00—Cryptographic mechanisms or cryptographic arrangements for secret or secure communications; Network security protocols
- H04L9/08—Key distribution or management, e.g. generation, sharing or updating, of cryptographic keys or passwords
- H04L9/0861—Generation of secret information including derivation or calculation of cryptographic keys or passwords
- H04L9/0866—Generation of secret information including derivation or calculation of cryptographic keys or passwords involving user or device identifiers, e.g. serial number, physical or biometrical information, DNA, hand-signature or measurable physical characteristics
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L9/00—Cryptographic mechanisms or cryptographic arrangements for secret or secure communications; Network security protocols
- H04L9/32—Cryptographic mechanisms or cryptographic arrangements for secret or secure communications; Network security protocols including means for verifying the identity or authority of a user of the system or for message authentication, e.g. authorization, entity authentication, data integrity or data verification, non-repudiation, key authentication or verification of credentials
- H04L9/3271—Cryptographic mechanisms or cryptographic arrangements for secret or secure communications; Network security protocols including means for verifying the identity or authority of a user of the system or for message authentication, e.g. authorization, entity authentication, data integrity or data verification, non-repudiation, key authentication or verification of credentials using challenge-response
- H04L9/3278—Cryptographic mechanisms or cryptographic arrangements for secret or secure communications; Network security protocols including means for verifying the identity or authority of a user of the system or for message authentication, e.g. authorization, entity authentication, data integrity or data verification, non-repudiation, key authentication or verification of credentials using challenge-response using physically unclonable functions [PUF]
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Abstract
The invention relates to an authorization client, a power distribution terminal device and an authorization method thereof, comprising the following steps: the authorization client sends an authorization request to the power distribution terminal equipment to be authorized; after receiving the authorization request, the authorized power distribution terminal equipment acquires equipment fingerprints by using a PUF technology according to preset equipment excitation, generates machine codes according to the equipment fingerprints, and returns the machine codes to the authorization client; the authorization client generates a corresponding authorization code by using a set authorization algorithm according to the received machine code and sends the corresponding authorization code to the power distribution terminal equipment to be authorized; and the power distribution terminal equipment to be authorized performs authorization according to the received authorization code. The invention has the advantages of low cost, high reliability, tamper resistance and the like due to the fact that the PUF technology is adopted to obtain the equipment fingerprint, so that the safety of the identity mark of the power distribution terminal equipment is improved, and the potential safety operation hazard of the access of the power distribution terminal equipment to the internet of things is eliminated.
Description
Technical Field
The present invention relates to a power distribution terminal authorization method, and in particular, to an authorization client, a power distribution terminal device, and an authorization method thereof.
Background
Along with the rapid promotion of energy Internet strategy, an electric intelligent terminal with the characteristics of intelligence, ubiquitous interconnection and frequent control instruction interaction is widely applied to each link of an electric power system, and becomes a key infrastructure of the electric power system. At present, the number of terminal equipment accessed by a national power grid system exceeds 5 hundred million, the number is also increased rapidly along with the construction of the electric power Internet of things, the problems of terminal access management and the like are necessarily brought, and the risks of data leakage, terminal counterfeiting and version leakage also exist.
Before leaving the factory, the power distribution terminal equipment must register and authorize the equipment to realize equipment identity authentication, and only equipment passing the authentication is legal, the equipment can be put into normal use on site, otherwise, the equipment function can not be used, and the registration and authorization before leaving the factory of the equipment is the first defense line for safe operation of the on-site equipment. The existing power distribution terminal equipment generally uses a preset chip ID or equipment ID as an identity authentication credential, and the preset identity identification has the possibility of being stolen, deceptively played, cloned and physically cracked, so that hidden danger is brought to the safe operation of the ubiquitous power Internet of things.
Disclosure of Invention
The invention aims to provide an authorized client, a power distribution terminal device and an authorization method thereof, which are used for solving the problem that the identity of the existing power distribution terminal device is unsafe.
In order to solve the technical problems, the invention provides an authorization method of power distribution terminal equipment, which comprises the following steps:
the authorization client sends an authorization request to the power distribution terminal equipment to be authorized;
after receiving the authorization request, the authorized power distribution terminal equipment acquires equipment fingerprints by using a PUF technology according to preset equipment excitation, generates machine codes according to the equipment fingerprints, and returns the machine codes to the authorization client;
the authorization client generates a corresponding authorization code by using a set authorization algorithm according to the received machine code and sends the corresponding authorization code to the power distribution terminal equipment to be authorized;
and the power distribution terminal equipment to be authorized performs authorization according to the received authorization code.
The beneficial effects of the invention are as follows: according to preset equipment excitation, equipment fingerprints are obtained by using a PUF technology, and authorization codes are finally obtained according to the equipment fingerprints, so that the authorization of the power distribution terminal equipment is completed, and the equipment identity identification is realized. Because the PUF technology is adopted to obtain the equipment fingerprint, the advantages of low cost, high reliability, tamper resistance and the like are achieved, so that the safety of the identity identification of the power distribution terminal equipment is improved, and the potential safety operation hazard of the access of the power distribution terminal equipment to the internet of things is eliminated.
As a further improvement of the method, in order to further improve the security of the identity of the distribution terminal equipment, the machine code is obtained by combining the equipment fingerprint with an equipment type identification code corresponding to a preset equipment type.
As a further improvement of the method, in order to verify whether the authorization is successful, it further comprises: and the power distribution terminal equipment to be authorized generates an authorization code according to the machine code and the set authorization algorithm, compares the generated authorization code with the received authorization code, and if the authorization code and the received authorization code are the same, the power distribution terminal equipment to be authorized is successfully authorized.
In order to facilitate subsequent inquiry and management, after the power distribution terminal equipment is successfully authorized, the authorization state is returned to the authorization client, and the authorization client stores the corresponding authorization code and engineering information of the power distribution terminal equipment.
In order to solve the technical problem, the invention also provides a power distribution terminal device, which is used for:
after receiving an authorization request sent by an authorization client, acquiring a device fingerprint by using a PUF technology according to preset device excitation, generating a machine code according to the device fingerprint, and returning to the authorization client;
and authorizing according to the received authorization code.
The beneficial effects of the invention are as follows: according to preset equipment excitation, equipment fingerprints are obtained by using a PUF technology, and authorization codes are finally obtained according to the equipment fingerprints, so that the authorization of the power distribution terminal equipment is completed, and the equipment identity identification is realized. Because the PUF technology is adopted to obtain the equipment fingerprint, the advantages of low cost, high reliability, tamper resistance and the like are achieved, so that the safety of the identity identification of the power distribution terminal equipment is improved, and the potential safety operation hazard of the access of the power distribution terminal equipment to the internet of things is eliminated.
As a further improvement of the equipment, in order to further improve the safety of the identity of the distribution terminal equipment, the machine code is obtained by combining equipment fingerprints with equipment type identification codes corresponding to preset equipment types.
As a further improvement of the apparatus, in order to verify whether the authorization is successful, the power distribution terminal apparatus is further configured to: and generating an authorization code according to the machine code and the set authorization algorithm, comparing the generated authorization code with the received authorization code, and if the generated authorization code and the received authorization code are the same, indicating that the power distribution terminal equipment to be authorized is successfully authorized.
As a further improvement of the apparatus, the power distribution terminal apparatus is also for facilitating subsequent inquiry and management: and after the authorization is successful, returning the authorization state to the authorization client.
In order to solve the technical problem, the present invention further provides an authorization client, where the authorization client is configured to:
sending an authorization request to the power distribution terminal equipment to be authorized;
and receiving the machine code returned by the power distribution terminal equipment to be authorized, generating a corresponding authorization code by using a set authorization algorithm according to the received machine code, and sending the corresponding authorization code to the power distribution terminal equipment to be authorized.
The beneficial effects of the invention are as follows: and finally obtaining an authorization code according to the received machine code, thereby completing the authorization of the power distribution terminal equipment and realizing equipment identity identification. Because the machine code is obtained by adopting a PUF technology, the method has the advantages of low cost, high reliability, tamper resistance and the like, thereby improving the safety of the identity of the distribution terminal equipment and eliminating the potential safety hazard of the distribution terminal equipment accessing to the Internet of things.
As a further improvement of the client, the authorization client is also used for facilitating subsequent querying and management: and after receiving the authorization state, storing the corresponding authorization code and the engineering information of the power distribution terminal equipment.
Drawings
Fig. 1 is a process diagram of an authorization method of a power distribution terminal device of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be further described in detail with reference to the accompanying drawings and specific embodiments.
Authorization method embodiment of power distribution terminal equipment:
the embodiment provides an authorization method of power distribution terminal equipment, and the authorization process is shown in fig. 1. According to the method, FUF technology is combined with an authorization method, so that the indestructible, uncopyable and untrustable, unrepeatable and untrustable identification of the distribution terminal equipment of the Internet of things are realized, and the identity safety of the distribution terminal equipment of the Internet of things is improved. Specifically, the authorization method of the power distribution terminal equipment comprises the following steps:
(1) And the authorization client sends an authorization request to the power distribution terminal equipment to be authorized.
In order to realize the authorization of the power distribution terminal device, the authorization client must ensure that the authorization client can be reliably connected with the power distribution terminal device to be authorized in a communication manner so as to realize normal communication. As shown in fig. 1, under normal communication conditions, the authorization client transmits an authorization request to a service program of the power distribution terminal device to be authorized through an authorization program.
(2) After the authorized power distribution terminal equipment receives the authorization request, equipment fingerprints are acquired by using a PUF technology according to preset equipment excitation, machine codes are generated according to the equipment fingerprints, and the machine codes are returned to the authorized client.
The machine code is obtained by combining the equipment fingerprint with an equipment type identification code corresponding to a preset equipment type. The preset equipment excitation and equipment types are fixed in the service program of the equipment by default, and aiming at massive power distribution terminal equipment of the Internet of things, the equipment types can be rapidly identified through unique identification codes sent by the device, so that the identification, authorization and management of the background are facilitated. The power distribution terminal equipment to be authorized is internally provided with a chip based on PUF technology, and an identification code (also called equipment fingerprint) of equipment hardware is generated by utilizing random process deviation which is uncontrollable in the manufacturing process of an integrated circuit. In this embodiment, the chip may implement a dynamically configurable multi-output ROPUF technique.
After receiving an authorization request sent by an authorization client, a service program of the power distribution terminal equipment to be authorized inputs preset equipment excitation into a chip based on PUF technology, and the chip outputs a response, so that equipment fingerprints are obtained and sent to the service program. The service program adds a device type identification code corresponding to the preset device type behind the device fingerprint, namely adds the device type identification code behind the device fingerprint according to the preset device type, combines the device type identification codes together to serve as a machine code of the terminal device to be authorized, and returns the machine code to an authorization program of the authorization client.
Of course, as other embodiments, when the machine code is generated, the device type identification code may be added in front of the device fingerprint according to the preset device type, and the device type identification codes may be combined together to be used as the machine code of the terminal device to be authorized, or the acquired device fingerprint may be directly used as the machine code. The machine code can be extracted at any time according to the requirements and is not stored after the use is completed, so that the risk of copying and tampering of the machine code is avoided.
(3) And the authorization client generates a corresponding authorization code by using a set authorization algorithm according to the received machine code, and sends the corresponding authorization code to the power distribution terminal equipment to be authorized.
The authorization algorithm adds the option of the equipment type, and carries out hash operation, so that the security of the machine code is further improved. In this embodiment, the authorization algorithm is a hash algorithm that is obtained by taking a machine code and a device type of a device as input and performing MD5 calculation, where MD5 is widely used in the field of computer security, and the specific calculation process of MD5 belongs to the prior art and is not described herein.
Of course, as other authorization algorithms, other information of the device may be added as input information, or other widely used hash algorithms, such as SHA-1, SHA-2, etc., may be used to generate the authorization code of a fixed length as required (the authorization code in the present embodiment is merely an example). Since the hash algorithm has irreversible characteristics, the safety of the device is further enhanced.
(4) And the power distribution terminal equipment to be authorized performs authorization according to the received authorization code.
The service program of the power distribution terminal equipment to be authorized generates an authorization code according to the machine code and an authorization algorithm which is the same as that of the authorization client, compares the generated authorization code with the received authorization code, and authorizes the equipment and stores the authorization code if the authorization code and the received authorization code are identical. After the power distribution terminal equipment is successfully authorized, the authorization state is returned to the authorization client, and the authorization client adds the authorization code and engineering information (such as engineering project name, equipment name, contract number, equipment number and the like) of the power distribution terminal equipment to generate a complete engineering and authorization information record which is stored in a database, so that the query and management of the power distribution terminal equipment are facilitated.
In this embodiment, the equipment excitation preset by the service program of the power distribution terminal equipment to be authorized is FTU-1234, the ROPUF technology is adopted to generate response (equipment fingerprint) 1234ABCD by utilizing the difference of different RO oscillation frequencies, the preset equipment type is FTU-XY, the preset equipment type FTU-XY and the equipment fingerprint are combined to generate unique machine code 1234ABCD-FTU-XY, and the unique machine code 1234ABCD-FTU-XY is returned to the authorized client. The authorization client generates a corresponding authorization code 1QAZ WSX3EDC4RFV according to the machine code, sends the corresponding authorization code 1QAZ WSX3EDC4RFV to the power distribution terminal to be authorized, and the power distribution terminal equipment performs authorization authentication to complete equipment identity identification. In the present embodiment
It should be noted that, the authorization process of the authorization method of the power distribution terminal device is an authorization process before the new power distribution terminal device leaves the factory, only authorized legal devices can be sent to the site for use, and when the commissioned devices are restarted each time or the authorized states need to be detected, the devices can also perform authorization authentication, and if illegal anomalies occur, the devices immediately stop working.
Distribution terminal device embodiment:
the present embodiment provides a power distribution terminal device, and since the working process of the power distribution terminal device has been described in detail in the foregoing embodiment of the authorization method of the power distribution terminal device, the description thereof will not be repeated here.
Authorization client embodiment:
the embodiment provides an authorization client, and the working process of the authorization client is described in detail in the foregoing embodiment of the authorization method of the power distribution terminal device, which is not described herein again.
The invention realizes the uniqueness of equipment identity recognition based on legal authorization of equipment, once equipment is maliciously tampered, cloned, replaced and the like, the equipment fingerprint is inevitably changed due to the adoption of a PUF physical unclonable technology, so that the equipment authorization is changed into an illegal state, the equipment alarms, and the work is stopped, thereby avoiding the security risk carried by the equipment from being introduced into the whole network. The invention solves the problem that the identity of the distribution terminal equipment is possibly stolen, deception, replay, cloning and physical cracking, and greatly improves the communication safety of the distribution terminal equipment of the Internet of things.
Finally, it should be noted that the foregoing embodiments are merely for illustrating the technical solution of the present invention and not for limiting the scope of protection thereof, and although the present application has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that various changes, modifications or equivalents may be made to the specific embodiments of the application after reading the present application, and these changes, modifications or equivalents are within the scope of protection of the claims of the present invention.
Claims (6)
1. The authorization method of the power distribution terminal equipment is characterized by comprising the following steps before a new power distribution terminal equipment leaves a factory:
the authorization client sends an authorization request to the power distribution terminal equipment to be authorized;
after receiving the authorization request, the authorized power distribution terminal equipment acquires equipment fingerprints by using a PUF technology according to preset equipment excitation, generates machine codes according to the equipment fingerprints, and returns the machine codes to the authorization client; the machine code is not stored after the use is completed;
the authorization client generates a corresponding authorization code by using a set authorization algorithm according to the received machine code and sends the corresponding authorization code to the power distribution terminal equipment to be authorized;
and comparing the generated authorization code with the received authorization code by the power distribution terminal equipment to be authorized, and if the generated authorization code and the received authorization code are the same, indicating that the power distribution terminal equipment to be authorized is successfully authorized.
2. The method for authorizing a power distribution terminal device of claim 1, wherein the machine code is a combination of a device fingerprint and a device type identification code corresponding to a preset device type.
3. The method for authorizing the power distribution terminal equipment according to claim 1 or 2, wherein after the power distribution terminal equipment is successfully authorized, an authorization state is returned to the authorization client, and the authorization client stores the corresponding authorization code and engineering information of the power distribution terminal equipment.
4. A power distribution terminal device, characterized in that the power distribution terminal device is configured to:
after receiving an authorization request sent by an authorization client, acquiring a device fingerprint by using a PUF technology according to preset device excitation, generating a machine code according to the device fingerprint, and returning to the authorization client; the power distribution terminal device is further configured to: and generating an authorization code according to the machine code and an authorization algorithm which is the same as that of the authorization client, comparing the generated authorization code with the received authorization code, and if the generated authorization code and the received authorization code are the same, successfully authorizing.
5. The power distribution terminal device of claim 4, wherein the machine code is a combination of a device fingerprint and a device type identification code corresponding to a predetermined device type.
6. The power distribution terminal apparatus of claim 4 or 5, further characterized by: and after the authorization is successful, returning the authorization state to the authorization client.
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| CN111046367B (en) * | 2019-12-24 | 2022-05-03 | 思必驰科技股份有限公司 | Voice equipment authentication method and system |
| CN113066557B (en) * | 2021-03-24 | 2024-03-26 | 上海力声特医学科技有限公司 | Method and system for secure implementation of nerve stimulation device |
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