CN114124160A - one-table-one-PSK (phase Shift keying) adaptation method suitable for PLC (programmable logic controller) carrier safety - Google Patents
one-table-one-PSK (phase Shift keying) adaptation method suitable for PLC (programmable logic controller) carrier safety Download PDFInfo
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- CN114124160A CN114124160A CN202111269021.XA CN202111269021A CN114124160A CN 114124160 A CN114124160 A CN 114124160A CN 202111269021 A CN202111269021 A CN 202111269021A CN 114124160 A CN114124160 A CN 114124160A
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- psk
- information
- concentrator
- electric meter
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B3/00—Line transmission systems
- H04B3/54—Systems for transmission via power distribution lines
- H04B3/544—Setting up communications; Call and signalling arrangements
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L63/00—Network architectures or network communication protocols for network security
- H04L63/08—Network architectures or network communication protocols for network security for authentication of entities
- H04L63/0876—Network architectures or network communication protocols for network security for authentication of entities based on the identity of the terminal or configuration, e.g. MAC address, hardware or software configuration or device fingerprint
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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
Abstract
The invention relates to a one-meter one-PSK adaptation method applicable to PLC carrier safety, which comprises S1, sending a request data packet to a concentrator by an electric meter, reporting the request data packet to a master station system by the concentrator, replying the concentrator by a master station system according to received information, establishing normal connection between the concentrator and a current electric meter, finishing authentication registration by the current electric meter, wherein the request data packet comprises an MAC address of the current electric meter; s2, the master station system generates new { Mi _ PSK _ id, Mi _ PSK } information and sends the new { Mi _ PSK _ id, Mi _ PSK } information and PSK Valid time PSK _ Valid _ time corresponding to the electric meter to the current electric meter; s3, the master station system sends the new { Mi _ PSK _ id, Mi _ PSK } information, PSK Valid time PSK _ Valid _ time corresponding to the ammeter and the MAC address to the concentrator; and S4, after the PSK Valid time PSK _ Valid _ time received by the current ammeter and the concentrator respectively takes effect, operating with new { Mi _ PSK _ id, Mi _ PSK } information respectively to complete one-table-one-PSK adaptation. The method improves the safety of the smart power grid.
Description
Technical Field
The invention relates to the technical field of electric meters, in particular to a one-meter one-PSK adaptation method suitable for PLC carrier safety.
Background
With the rapid development of the smart power grid, a plurality of electric meters can be centrally managed under one power grid area, the plurality of electric meters form a network through power lines, once the network is subjected to security attack, not only can huge loss on information and economy be caused, but also personal and social security can be threatened, and therefore the security problem of power line communication is concerned.
At present, the international application of the wider G3-Prime carrier technical scheme is that all devices in one network are equipped with the same PSK, once the PSK is breached, the whole network is safe and breached, and the risk of being attacked is very high.
Disclosure of Invention
In view of the above problems, an object of the present invention is to provide a one-table-one PSK adaptation scheme suitable for PLC carrier security, which can improve security of an intelligent network.
In order to achieve the purpose, the technical scheme of the invention is as follows: a one-table-one PSK adaptation method suitable for PLC carrier security is characterized in that: the method comprises the following steps of,
s1, the electric meter sends a request data packet to the concentrator, the concentrator reports to the master station system, the main station system replies to the concentrator according to the received information, the concentrator establishes normal connection with the current electric meter, the current electric meter completes authentication registration, and the request data packet comprises the MAC address of the current electric meter;
s2, the master station system generates new { Mi _ PSK _ id, Mi _ PSK } information and sends the new { Mi _ PSK _ id, Mi _ PSK } information and PSK Valid time PSK _ Valid _ time corresponding to the electric meter to the current electric meter;
s3, the master station system sends the new { Mi _ PSK _ id, Mi _ PSK } information, PSK Valid time PSK _ Valid _ time corresponding to the ammeter and the MAC address to the concentrator;
and S4, after the PSK Valid time PSK _ Valid _ time received by the current ammeter and the concentrator respectively takes effect, operating with new { Mi _ PSK _ id, Mi _ PSK } information respectively to complete one-table-one-PSK adaptation.
Further, the electric meter in S1 sends a request data packet to the concentrator, the concentrator reports to the master station system, the master station system replies to the concentrator according to the received information, the concentrator establishes normal connection with the current electric meter, and the current electric meter completes authentication registration,
s11, the STA module of the electric meter requests parameters for the electric meter to obtain { Mi _ PSK _ id, Mi _ PSK } information, and the STA module reports the MAC address of the electric meter to the concentrator;
s12, the concentrator inquires whether the information is originally loaded with { Mi _ PSK _ id, Mi _ PSK } information, and when the information is not inquired, the concentrator sends request information to the main station system so as to acquire the { Mi _ PSK _ id, Mi _ PSK } information;
and S13, the master station system replies the { Mi _ PSK _ id, Mi _ PSK } information to the concentrator, the concentrator receives the information and replies the information and the MAC address to the STA module, normal connection is established between the STA module and the current electric meter, and registration authentication of the current electric meter is completed.
Further, when inquiring whether the concentrator in S12 initially contains { Mi _ PSK _ id, Mi _ PSK } information, when inquiring that the concentrator itself has { Mi _ PSK _ id, Mi _ PSK } information, replying the { Mi _ PSK _ id, Mi _ PSK } information together with the MAC address to the STA module, and establishing a normal connection with the current electric meter to complete registration authentication of the current electric meter.
Further, the concentrator in S12 queries { Mi _ PSK _ id, Mi _ PSK } information through the MAC address reported by the STA module.
Further, after receiving the request information of the concentrator, the master station system in S13 queries, according to a shift file carried by the master station system, a table number of the current electric meter and { Mi _ PSK _ id, Mi _ PSK } information through the MAC address.
Further, the master station system in S2 generates, through the key management system, new { Mi _ PSK _ id, Mi _ PSK } information corresponding to the current table number one to one according to the table number of the current electric meter.
Further, the adaptation method further comprises the steps that before the operation of S1 is carried out, the electric meter needs to be installed and powered on, after the operation of S4 is completed, the STA module in the electric meter is disconnected from the network, and the operation of S1 is carried out.
Further, the method further includes that after the registration authentication is successful, the electric meter completes the installation operation before executing S2.
Further, the Mi _ PSK _ id is 32 bytes, and the Mi _ PSK is 15 bytes.
Further, the value of the PSK _ Valid _ time is 5 min.
Compared with the prior art, the invention has the advantages that:
the mode that STA sends MAC addresses is adopted, so that the concentrator confirms whether PSK information matched with the electric meter is contained or not by inquiring the MAC addresses, normal connection is established, after the normal connection is established, the current electric meter number is found by the master station through the MAC addresses, corresponding new PSK information is generated according to the current electric meter number and is sent to the current electric meter and the concentrator, one-meter-one PSK is achieved, and the safety of the intelligent network is improved.
Drawings
Fig. 1 is a flowchart illustrating an adaptation method according to the present application.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the accompanying drawings are illustrative only for the purpose of explaining the present invention, and are not to be construed as limiting the present invention.
Fig. 1 is a flow chart illustrating an embodiment of a method for PSK adaptation for PLC carrier security according to the present application, as shown in the figure, the method includes,
s1, the electric meter sends a request data packet to the concentrator, the concentrator reports to the master station system, the main station system replies to the concentrator according to the received information, the concentrator establishes normal connection with the current electric meter, the current electric meter completes authentication registration, and the request data packet comprises the MAC address of the current electric meter;
s2, the master station system generates new { Mi _ PSK _ id, Mi _ PSK } information and sends the new { Mi _ PSK _ id, Mi _ PSK } information and PSK Valid time PSK _ Valid _ time corresponding to the electric meter to the current electric meter;
s3, the master station system sends the new { Mi _ PSK _ id, Mi _ PSK } information, PSK Valid time PSK _ Valid _ time corresponding to the ammeter and the MAC address to the concentrator;
and S4, after the PSK Valid time PSK _ Valid _ time received by the current ammeter and the concentrator respectively takes effect, operating with new { Mi _ PSK _ id, Mi _ PSK } information respectively to complete one-table-one-PSK adaptation.
Specifically, the electric meter in S1 sends a request packet to the concentrator, the concentrator reports the request packet to the master station system, the master station system replies to the concentrator according to the received information, the concentrator establishes a normal connection with the current electric meter, and the current electric meter completes authentication registration,
s11, the STA module of the electric meter requests parameters for the electric meter to obtain { Mi _ PSK _ id, Mi _ PSK } information, and the STA module reports the MAC address of the electric meter to the concentrator;
s12, the concentrator inquires whether the information is originally loaded with { Mi _ PSK _ id, Mi _ PSK } information, and when the information is not inquired, the concentrator sends request information to the main station system so as to acquire the { Mi _ PSK _ id, Mi _ PSK } information;
and S13, the master station system replies the { Mi _ PSK _ id, Mi _ PSK } information to the concentrator, the concentrator receives the information and replies the information and the MAC address to the STA module, normal connection is established between the STA module and the current electric meter, and registration authentication of the current electric meter is completed.
Namely, after the electric meter is installed and powered on, the STA module requests parameters from the electric meter to obtain { Mi _ PSK _ id, Mi _ PSK } information. Under the condition that the DCU/GW is installed and powered on, on the PLC network, the STA module starts a registration process and reports the MAC address of the electric meter to the DCU/GW, namely to the concentrator.
And when the concentrator is initially installed without { Mi _ PSK _ id, Mi _ PSK } information, requesting a master station system, inquiring the table number of the electric meter and the { Mi _ PSK _ id, Mi _ PSK } information by the master station system through the MAC address according to the shift file, sending the table number and the { Mi _ PSK _ id, Mi _ PSK } information to the concentrator, and after the authentication is successful, establishing normal connection between the electric meter and the concentrator to finish authentication and registration.
When the concentrator inquires that the concentrator has { Mi _ PSK _ id, Mi _ PSK } information, the concentrator replies to the STA module with the { Mi _ PSK _ id, Mi _ PSK } information and the MAC address, and establishes normal connection with the current electric meter to complete registration authentication of the current electric meter. In the process of executing S12, the concentrator queries { Mi _ PSK _ id, Mi _ PSK } information through the MAC address reported by the STA module.
After the registration authentication is completed, the electric meter completes the installation operation, which belongs to the application layer protocol interaction flow of the electric meter and is common technical knowledge known to those skilled in the art, and thus, the detailed description is not provided herein.
And the master station system generates new { Mi _ PSK _ id, Mi _ PSK } information according to the table number through a KMS (key management system), and after the state of the electric meter is in an installation state, the master station system sends the new { Mi _ PSK _ id, Mi _ PSK } information and PSK Valid time PSK _ Valid _ time corresponding to the electric meter to the current electric meter.
Meanwhile, the master station issues { Mi _ new _ PSK _ id, Mi _ new _ PSK, PSK _ Valid _ time } to the concentrator, and updates PSK in the concentrator.
When the new PSK Valid time PSK _ Valid _ time is Valid, the concentrator and the electric meter operate by { Mi _ new _ PSK _ id, Mi _ new _ PSK } information. Thereafter, the STA leaves the network, and proceeds to S1 to perform a table-PSK adaptation operation on the remaining meters.
The method configures unique PSK for each table, improves the security of the intelligent network, and ensures the security of the equipment because all PSK management is in the master station system.
Preferably, the Mi _ PSK _ id and the Mi _ new _ PSK _ id in the application are both 32 bytes, the Mi _ PSK and the Mi _ new _ PSK are both 15 bytes, and the PSK _ Valid _ time value is 5 min.
The invention adopts the mode that STA sends MAC address to ensure that the concentrator confirms whether PSK information matched with the electric meter is contained or not by inquiring the MAC address so as to establish normal connection, and after the normal connection is established, the master station finds the current electric meter number through the MAC address, generates corresponding new PSK information according to the current electric meter number and sends the PSK information to the current electric meter and the concentrator, thereby realizing one-meter one-PSK and improving the safety of the intelligent network.
While embodiments of the invention have been shown and described, it will be understood by those skilled in the art that: various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.
Claims (10)
1. A one-table-one PSK adaptation method suitable for PLC carrier security is characterized in that: the method comprises the following steps of,
s1, the electric meter sends a request data packet to the concentrator, the concentrator reports to the master station system, the main station system replies to the concentrator according to the received information, the concentrator establishes normal connection with the current electric meter, the current electric meter completes authentication registration, and the request data packet comprises the MAC address of the current electric meter;
s2, the master station system generates new { Mi _ PSK _ id, Mi _ PSK } information and sends the new { Mi _ PSK _ id, Mi _ PSK } information and PSK Valid time PSK _ Valid _ time corresponding to the electric meter to the current electric meter;
s3, the master station system sends the new { Mi _ PSK _ id, Mi _ PSK } information, PSK Valid time PSK _ Valid _ time corresponding to the ammeter and the MAC address to the concentrator;
and S4, after the PSK Valid time PSK _ Valid _ time received by the current ammeter and the concentrator respectively takes effect, operating with new { Mi _ PSK _ id, Mi _ PSK } information respectively to complete one-table-one-PSK adaptation.
2. The method of claim 1 for one-table-one-PSK adaptation for PLC carrier security, characterized by:
the electric meter in the S1 sends a request data packet to the concentrator, the concentrator reports to the master station system, the master station system replies to the concentrator according to the received information, the concentrator establishes normal connection with the current electric meter, the current electric meter completes authentication registration, specifically including,
s11, the STA module of the electric meter requests parameters for the electric meter to obtain { Mi _ PSK _ id, Mi _ PSK } information, and the STA module reports the MAC address of the electric meter to the concentrator;
s12, the concentrator inquires whether the information is originally loaded with { Mi _ PSK _ id, Mi _ PSK } information, and when the information is not inquired, the concentrator sends request information to the main station system so as to acquire the { Mi _ PSK _ id, Mi _ PSK } information;
and S13, the master station system replies the { Mi _ PSK _ id, Mi _ PSK } information to the concentrator, the concentrator receives the information and replies the information and the MAC address to the STA module, normal connection is established between the STA module and the current electric meter, and registration authentication of the current electric meter is completed.
3. The method of claim 2 for one-table-one-PSK adaptation for PLC carrier security, characterized by:
when inquiring whether the concentrator in the S12 initially contains { Mi _ PSK _ id, Mi _ PSK } information, when inquiring that the concentrator itself has { Mi _ PSK _ id, Mi _ PSK } information, replying the { Mi _ PSK _ id, Mi _ PSK } information together with the MAC address to the STA module, establishing a normal connection with the current electric meter, and completing registration authentication of the current electric meter.
4. The method of claim 3, wherein the method comprises:
the concentrator in S12 queries { Mi _ PSK _ id, Mi _ PSK } information through the MAC address reported by the STA module.
5. The method of claim 4, wherein the method comprises:
after receiving the request information of the concentrator, the master station system in S13 queries the table number and { Mi _ PSK _ id, Mi _ PSK } information of the current electric meter through the MAC address according to the shift file carried by the master station system.
6. The method of claim 1 for one-table-one-PSK adaptation for PLC carrier security, characterized by:
and the master station system in S2 generates, through the key management system, new { Mi _ PSK _ id, Mi _ PSK } information corresponding to the current table number one to one according to the table number of the current electric meter.
7. The method of claim 1 for one-table-one-PSK adaptation for PLC carrier security, characterized by:
the adaptation method further comprises the steps that the electric meter needs to be installed and powered up before the operation of S1 is carried out, after the operation of S4 is completed, the STA module in the electric meter is disconnected from the network, and the operation of S1 is carried out.
8. The method of claim 1 for one-table-one-PSK adaptation for PLC carrier security, characterized by:
the method further comprises that after the registration authentication is successful, the electric meter completes the installation operation before the step S2 is executed.
9. The method of claim 3, wherein the method comprises:
the Mi _ PSK _ id is 32 bytes, and the Mi _ PSK is 15 bytes.
10. The method of claim 3, wherein the method comprises:
the PSK _ Valid _ time is 5 min.
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