CN110601854A - Authorization client, power distribution terminal equipment and authorization method thereof - Google Patents
Authorization client, power distribution terminal equipment and authorization method thereof Download PDFInfo
- Publication number
- CN110601854A CN110601854A CN201910889169.XA CN201910889169A CN110601854A CN 110601854 A CN110601854 A CN 110601854A CN 201910889169 A CN201910889169 A CN 201910889169A CN 110601854 A CN110601854 A CN 110601854A
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- Prior art keywords
- authorization
- distribution terminal
- power distribution
- code
- authorized
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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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- Engineering & Computer Science (AREA)
- Computer Security & Cryptography (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Remote Monitoring And Control Of Power-Distribution Networks (AREA)
Abstract
The invention relates to an authorization client, a power distribution terminal device and an authorization method thereof, wherein the authorization client 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 power distribution terminal equipment to be authorized acquires an equipment fingerprint by using a PUF (physical unclonable function) technology according to preset equipment excitation, generates a machine code according to the equipment fingerprint and returns the machine code 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 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 PUF technology is adopted to obtain the device fingerprint, so that the method has the advantages of low cost, high reliability, tamper resistance and the like, the safety of the identity identification of the power distribution terminal device is improved, and the potential safety operation hazard that the power distribution terminal device is connected into the Internet of things is eliminated.
Description
Technical Field
The invention relates to a power distribution terminal authorization method, in particular to an authorization client, power distribution terminal equipment and an authorization method thereof.
Background
With the rapid advance of the energy internet strategy, the intelligent power terminal with the characteristics of intellectualization, ubiquitous interconnection and frequent control instruction interaction is widely applied to all links of a power system and becomes a key infrastructure of the power system. At present, the number of terminal devices accessed by a national power grid system exceeds 5 hundred million, the number is also increased along with the construction of an electric power internet of things, the problems of terminal access management and the like are inevitably brought, and the risks of data leakage, terminal counterfeiting and version leakage exist.
Before the power distribution terminal equipment leaves a factory, the equipment must be registered and authorized to realize equipment identity authentication, the equipment which passes the authorization authentication is legal and can be put into normal use on site, otherwise, the function of the equipment cannot be used, and the registration and authorization before the equipment leaves the factory is a first line of defense line for the safe operation of the field equipment. The existing power distribution terminal equipment generally uses a preset chip ID or equipment ID as an identity authentication certificate, and the preset identity identification has the possibility of being stolen, deceived, replayed, cloned and physically cracked, thereby bringing hidden troubles to the safe operation of the ubiquitous power internet of things.
Disclosure of Invention
The invention aims to provide an authorization client, power distribution terminal equipment and an authorization method thereof, which are used for solving the problem that the identity of the existing power distribution terminal equipment is unsafe.
In order to solve the technical problem, 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 power distribution terminal equipment to be authorized acquires an equipment fingerprint by using a PUF (physical unclonable function) technology according to preset equipment excitation, generates a machine code according to the equipment fingerprint and returns the machine code 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 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 beneficial effects that: according to preset equipment excitation, the PUF technology is used for obtaining the equipment fingerprint, and the authorization code is finally obtained according to the equipment fingerprint, so that the authorization of the power distribution terminal equipment is completed, and the equipment identity identification is realized. The PUF technology is adopted to obtain the device fingerprint, so that the method has the advantages of low cost, high reliability, tamper resistance and the like, the security of the identity identification of the power distribution terminal device is improved, and the potential safety operation hazard that the power distribution terminal device is connected into the Internet of things is eliminated.
As a further improvement of the method, in order to further improve the security of the power distribution terminal device identification, the machine code is obtained by combining the device fingerprint with a device type identifier corresponding to a preset device type.
As a further improvement of the method, in order to verify whether the authorization is successful, the method 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 generated authorization code is the same as the received authorization code, indicates that the power distribution terminal equipment to be authorized is successfully authorized.
As a further improvement of the method, for convenience of follow-up query and management, after the authorized power distribution terminal equipment is successfully authorized, the authorized state is returned to the authorized client, and the authorized client stores the corresponding authorized code and the engineering information of the power distribution terminal equipment.
In order to solve the above technical problem, the present invention further provides a power distribution terminal device, where 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 (physical unclonable function) technology according to preset device excitation, generating a machine code according to the device fingerprint, and returning the machine code to the authorization client;
and authorizing according to the received authorization code.
The invention has the beneficial effects that: according to preset equipment excitation, the PUF technology is used for obtaining the equipment fingerprint, and the authorization code is finally obtained according to the equipment fingerprint, so that the authorization of the power distribution terminal equipment is completed, and the equipment identity identification is realized. The PUF technology is adopted to obtain the device fingerprint, so that the method has the advantages of low cost, high reliability, tamper resistance and the like, the security of the identity identification of the power distribution terminal device is improved, and the potential safety operation hazard that the power distribution terminal device is connected into the Internet of things is eliminated.
As a further improvement of the equipment, in order to further improve the security of the identity of the power 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 device, in order to verify whether the authorization is successful, the power distribution terminal device 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 is the same as the received authorization code, indicating that the power distribution terminal equipment to be authorized is authorized successfully.
As a further improvement of the device, in order to facilitate subsequent inquiry and management, the power distribution terminal device is further used for: and after the authorization is successful, returning the authorization state to the authorization client.
In order to solve the above technical problem, the present invention further provides an authorization client, where the authorization client is configured to:
sending an authorization request to 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 authorization code to the power distribution terminal equipment to be authorized.
The invention has the beneficial effects that: and finally obtaining an authorization code according to the received machine code, thereby completing the authorization of the power distribution terminal equipment and realizing the equipment identity identification. Because the PUF technology is adopted for obtaining the machine code, the method has the advantages of low cost, high reliability, tamper resistance and the like, thereby improving the safety of the identity identification of the power distribution terminal equipment and eliminating the potential safety operation hazard that the power distribution terminal equipment is accessed into the Internet of things.
As a further improvement of the client, in order to facilitate subsequent query and management, the authorization client is further configured to: 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 described in further detail with reference to the accompanying drawings and specific embodiments.
The embodiment of the authorization method of the power distribution terminal equipment comprises the following steps:
the embodiment provides an authorization method of power distribution terminal equipment, and an authorization process is shown in fig. 1. According to the method, the FUF technology is combined with the authorization method, the indecipherability, the copying and the tampering of the distribution terminal equipment identifier 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 authorization of the power distribution terminal device, it is necessary to 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 sends an authorization request to a service program of the power distribution terminal device to be authorized through an authorization program.
(2) And after receiving the authorization request, the power distribution terminal equipment to be authorized acquires the equipment fingerprint by using the PUF technology according to the preset equipment excitation, generates a machine code according to the equipment fingerprint and returns the machine code to the authorization client.
The machine code is obtained by combining the device fingerprint with a device type identification code corresponding to a preset device type. The preset equipment excitation and the equipment type are fixed in a service program of the equipment by default, aiming at massive Internet of things power distribution terminal equipment, the equipment type can be quickly identified through the unique identification code sent by the device, and background identification, authorization and management are facilitated. A chip based on PUF technology is arranged in the power distribution terminal equipment to be authorized, and an identity identification code (also called equipment fingerprint) of equipment hardware is generated by using uncontrollable random process deviation of an integrated circuit in the manufacturing process. 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 the PUF technology, and the chip outputs a response, so that an equipment fingerprint is obtained and sent to the service program. And the service program appends a preset device type identification code corresponding to the device type behind the device fingerprint, namely appends the device type identification code behind the device fingerprint according to the preset device type, combines the device type identification codes together to be used as a machine code of the terminal device to be authorized, and returns the machine code to the authorization program of the authorization client.
Of course, as another embodiment, when generating the machine code, a device type identification code may be added in front of the device fingerprint according to a preset device type, and the device type identification codes are combined together to be the machine code of the terminal device to be authorized, or the obtained device fingerprint is directly used as the machine code. The machine code can be extracted at any time according to requirements and is not stored after being used, so that the risks of copying and tampering the machine code are 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 authorization code to the power distribution terminal equipment to be authorized.
The authorization algorithm is added with the option of the device type, and hash operation is performed, so that the security of the machine code is further improved. In this embodiment, the authorization algorithm used is the authorization code obtained by taking the device machine code and the device type as input and calculating through the MD5, and the MD5 is a hash algorithm widely used in the field of computer security, and since the specific calculation process of the MD5 belongs to the prior art, it is not described here any more.
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 and SHA-2, are adopted, and an authorization code of a fixed length is generated as required (the authorization code in this embodiment is only an example). The safety of the equipment is further enhanced due to the irreversible characteristic of the hash algorithm.
(4) And the power distribution terminal equipment to be authorized performs authorization according to the received authorization code.
And if the machine code and the authorization code are completely the same, authorizing the equipment and storing the authorization code. After the power distribution terminal equipment is successfully authorized, the authorization state is returned to the authorization client, the authorization client adds the authorization code and the engineering information (such as the engineering project name, the equipment name, the contract number, the equipment number and the like) of the power distribution terminal equipment, a complete engineering and authorization information record is generated and stored in the database, and the query and the management of the power distribution terminal equipment are facilitated.
In this embodiment, the device excitation preset by the service program of the power distribution terminal device to be authorized is FTU-1234, a response (device fingerprint) 1234ABCD is generated by using the difference between different RO oscillation frequencies through the ROPUF technology, the preset device type is FTU-XY, and the preset device type FTU-XY and the device fingerprint are combined to generate a unique machine code 1234ABCD-FTU-XY and returned to the authorization client. And the authorization client generates a corresponding authorization code 1QAZ2WSX3EDC4RFV according to the machine code and sends the authorization code to the power distribution terminal to be authorized, and the power distribution terminal equipment performs authorization authentication to complete equipment identity identification. In this example
It should be noted that the authorization flow of the authorization method for the power distribution terminal device is an authorization flow before new power distribution terminal devices leave a factory, only authorized legal devices can be sent to a field for use, the devices can also perform authorization authentication every time the operated devices are restarted or an authorization state needs to be detected, and if an illegal exception occurs, the devices immediately stop working.
Distribution terminal equipment 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 for a power distribution terminal device, details are not described here.
Authorization client embodiment:
the present embodiment provides an authorization client, and since the working process of the authorization client has been described in detail in the foregoing embodiment of the authorization method for power distribution terminal equipment, details of the working process are not described here.
The invention realizes the uniqueness of the equipment identity identification on the basis of the legal authorization of the equipment, once the equipment is maliciously tampered, cloned, replaced and the like, the fingerprint of the equipment is inevitably changed due to the adoption of the PUF physical unclonable technology, so that the authorization of the equipment is changed into an illegal state, the equipment gives an alarm, the operation is stopped, and the introduction of the carried safety risk into the whole network is avoided. The invention solves the problem that the identity of the power distribution terminal equipment is stolen, deceived, replayed, cloned and physically cracked, and greatly improves the communication security of the internet of things power distribution terminal equipment.
Finally, it should be noted that the above embodiments are only used for illustrating the technical solutions of the present invention and not for limiting the protection scope thereof, and although the present application is described in detail with reference to the above embodiments, those skilled in the art should understand that after reading the present application, various changes, modifications or equivalents of the embodiments of the present application can be made, and these changes, modifications or equivalents are within the protection scope of the claims of the present invention.
Claims (10)
1. An authorization method for power distribution terminal equipment is characterized by 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 power distribution terminal equipment to be authorized acquires an equipment fingerprint by using a PUF (physical unclonable function) technology according to preset equipment excitation, generates a machine code according to the equipment fingerprint and returns the machine code 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 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.
2. The authorization method for distribution terminal equipment according to claim 1, characterized in that the machine code is obtained by combining a device fingerprint with a device type identifier corresponding to a preset device type.
3. The method for authorizing a power distribution terminal device of claim 1 or 2, further comprising: 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 generated authorization code is the same as the received authorization code, indicates that the power distribution terminal equipment to be authorized is successfully authorized.
4. The authorization method of the power distribution terminal device according to claim 3, characterized in that after the power distribution terminal device is successfully authorized, the authorization status is returned to the authorization client, and the authorization client stores the corresponding authorization code and the engineering information of the power distribution terminal device.
5. An electrical distribution terminal device, characterized in that the electrical distribution terminal device is configured to:
after receiving an authorization request sent by an authorization client, acquiring a device fingerprint by using a PUF (physical unclonable function) technology according to preset device excitation, generating a machine code according to the device fingerprint, and returning the machine code to the authorization client;
and authorizing according to the received authorization code.
6. The power distribution terminal device of claim 5, wherein the machine code is derived from a combination of a device fingerprint and a device type identifier corresponding to a predetermined device type.
7. The electrical distribution terminal device of claim 5 or 6, 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 is the same as the received authorization code, indicating that the power distribution terminal equipment to be authorized is authorized successfully.
8. The electrical distribution terminal device of claim 7, further configured to: and after the authorization is successful, returning the authorization state to the authorization client.
9. An authorization client, wherein the authorization client is configured to:
sending an authorization request to 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 authorization code to the power distribution terminal equipment to be authorized.
10. The authorization client of claim 9, wherein the authorization client is further configured to: and after receiving the authorization state, storing the corresponding authorization code and the engineering information of the power distribution terminal equipment.
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| CN201910889169.XA CN110601854B (en) | 2019-09-19 | 2019-09-19 | Authorization client, power distribution terminal equipment and authorization method thereof |
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| CN201910889169.XA CN110601854B (en) | 2019-09-19 | 2019-09-19 | Authorization client, power distribution terminal equipment and authorization method thereof |
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| CN110601854A true CN110601854A (en) | 2019-12-20 |
| CN110601854B CN110601854B (en) | 2023-07-14 |
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| CN113066557A (en) * | 2021-03-24 | 2021-07-02 | 上海力声特医学科技有限公司 | Method and system for safe implementation of nerve stimulation device |
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| CN113066557A (en) * | 2021-03-24 | 2021-07-02 | 上海力声特医学科技有限公司 | Method and system for safe implementation of nerve stimulation device |
| 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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| Publication number | Publication date |
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| CN110601854B (en) | 2023-07-14 |
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