CN111404886A - Electric power metering terminal and electric power metering platform - Google Patents
Electric power metering terminal and electric power metering platform Download PDFInfo
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- CN111404886A CN111404886A CN202010143946.9A CN202010143946A CN111404886A CN 111404886 A CN111404886 A CN 111404886A CN 202010143946 A CN202010143946 A CN 202010143946A CN 111404886 A CN111404886 A CN 111404886A
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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
- H04L63/04—Network architectures or network communication protocols for network security for providing a confidential data exchange among entities communicating through data packet networks
- H04L63/0428—Network architectures or network communication protocols for network security for providing a confidential data exchange among entities communicating through data packet networks wherein the data content is protected, e.g. by encrypting or encapsulating the payload
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R22/00—Arrangements for measuring time integral of electric power or current, e.g. electricity meters
- G01R22/06—Arrangements for measuring time integral of electric power or current, e.g. electricity meters by electronic methods
- G01R22/061—Details of electronic electricity meters
- G01R22/063—Details of electronic electricity meters related to remote communication
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L67/00—Network arrangements or protocols for supporting network services or applications
- H04L67/01—Protocols
- H04L67/12—Protocols specially adapted for proprietary or special-purpose networking environments, e.g. medical networks, sensor networks, networks in vehicles or remote metering networks
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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
- H04L9/3247—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 involving digital signatures
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W12/00—Security arrangements; Authentication; Protecting privacy or anonymity
- H04W12/02—Protecting privacy or anonymity, e.g. protecting personally identifiable information [PII]
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- Computer Security & Cryptography (AREA)
- Computer Networks & Wireless Communication (AREA)
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- General Physics & Mathematics (AREA)
- Physics & Mathematics (AREA)
- Computer Hardware Design (AREA)
- Power Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Health & Medical Sciences (AREA)
- General Health & Medical Sciences (AREA)
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Abstract
The embodiment of the invention relates to the technical field of power communication, in particular to a power metering terminal and a power metering platform. The invention provides an electric power metering terminal and an electric power metering platform; the user ID and the secret key are respectively pre-stored in a chip and a platform of the electric power metering terminal; encrypting and decrypting the relevant data of the corresponding user with the stored key; the safety is improved. Through the hardware encryption ability of the safety chip, the safety of remote control and data acquisition of the electric power metering automation terminal is improved. The power metering terminal can also be used for judging the quality of networks of different operators and selecting the operator with good network, thereby improving the network performance.
Description
Technical Field
The embodiment of the invention relates to the technical field of power communication, in particular to a power metering terminal and a power metering platform.
Background
An electric power metering automation terminal (also called a smart meter) belongs to mandatory verification equipment and needs to be replaced when due, and the replacement period is generally 5-8 years. The smart meter will enter a new generation of express way at present, and two-network companies are expected to bid for 5.03 hundred million smart meters in 2016-2020, wherein 4.63 million smart meters are replacement requirements. And therefore is also currently a historical opportunity to improve the network connectivity and network security capabilities of the electricity meter. In the prior art, data transmitted from a remote metering platform to an electric meter or uploaded from an electric meter terminal to the metering platform is easy to intercept and be utilized by hackers to attack the platform or the terminal, or users artificially tamper electricity utilization data for private benefit.
Disclosure of Invention
Therefore, embodiments of the present invention provide an electric power metering terminal and a platform to solve the above problems.
In order to achieve the above object, the embodiments of the present invention provide the following technical solutions:
according to a first aspect of an embodiment of the present invention, an electric power metering terminal includes:
the electric power data acquisition module is used for acquiring electric power data;
the encryption module is used for encrypting the power data by adopting a secret key pre-stored in a chip security domain in the terminal;
the signature module is used for carrying out encryption summary operation on the electric power data to obtain a first electric power data summary;
and the sending module is used for sending the first electric power data abstract and the encrypted electric power data to an electric power metering platform.
The system further comprises a network judgment module, wherein the network judgment module is used for acquiring the network signal intensity of different operators;
determining the network of the operator with the maximum signal intensity;
and selecting the network access of the operator with the maximum signal strength.
Further, the receiving module is further used for receiving a first instruction digest sent by the electric power metering platform and an instruction encrypted by a pre-stored secret key;
the instruction abstract is obtained by the electric power metering platform through encryption abstract operation on the instruction sent to the electric power metering terminal;
the decryption module is used for decrypting the encrypted instruction by adopting a secret key stored in the chip security domain in advance to obtain an instruction;
the verification module is used for carrying out encryption digest operation on the instruction to obtain a second instruction digest;
judging whether the first instruction abstract and the second instruction abstract are the same;
if so, the signature verification is determined to be passed.
Further, the verification module is further configured to determine that the verification fails if the first instruction digest and the second instruction digest are not the same.
According to a second aspect of an embodiment of the present invention, an electricity metering platform includes:
the receiving module is used for receiving a first electric power data abstract sent by the electric power metering terminal and electric power data encrypted by a secret key pre-stored in a chip security domain in the terminal;
the decryption module is used for decrypting the encrypted power data by adopting a prestored secret key to obtain power data;
the verification module is used for carrying out encrypted abstract operation on the electric power data by adopting an encrypted abstract algorithm to obtain a second electric power data abstract;
judging whether the first power data abstract and the second power data abstract are the same;
if not, the verification is different.
Further, the verification module is further configured to:
determining that the verification is passed if the first and second power data digests are the same.
Further, still include:
the encryption module is used for encrypting the instruction sent to the electric power metering terminal by adopting a prestored secret key;
the signature module is used for calculating the instruction sent to the electric power metering terminal by adopting an encrypted abstract algorithm to obtain a first instruction abstract;
and the sending module is used for sending the first instruction abstract and the encrypted instruction to the electric power metering terminal.
Further, the system also comprises an encryption machine;
the key is pre-stored in the encryption engine.
Further, the encryption machine stores the identification of the user in advance; and the corresponding relation between the user identification and the secret key;
the relationship between the user's identity and the key comprises one of:
each user identification corresponds to a key, and the keys of the users are different;
multiple user identifications correspond to the same key.
According to a third aspect of the embodiment of the present invention, an electric power metering system includes the electric power metering terminal described in any one of the above and the electric power metering platform described in any one of the above.
The embodiment of the invention has the following advantages: the electric power metering terminal comprises a signature module and an encryption module; the encryption module is used for encrypting the first power data abstract obtained by the signature module by adopting a secret key pre-stored in a chip security domain in the terminal; the security domain in the chip of the invention is pre-embedded with a key. The data encrypted by the method cannot obtain the key by cracking even if being acquired by a hacker, so that the safety of the data is greatly improved. The encryption machine HSM of the platform is also internally provided with a secret key, data sent to the terminal are encrypted, and a hacker cannot crack the data to obtain the secret key, so that the safety is improved. The chip of the application also comprises an eSIM domain which is used for judging the quality of the networks of different operators and selecting the operator with good network, thereby improving the network performance.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below. It should be apparent that the drawings in the following description are merely exemplary, and that other embodiments can be derived from the drawings provided by those of ordinary skill in the art without inventive effort.
The structures, ratios, sizes, and the like shown in the present specification are only used for matching with the contents disclosed in the specification, so that those skilled in the art can understand and read the present invention, and do not limit the conditions for implementing the present invention, so that the present invention has no technical significance, and any structural modifications, changes in the ratio relationship, or adjustments of the sizes, without affecting the functions and purposes of the present invention, should still fall within the scope of the present invention.
Fig. 1 is a schematic structural diagram of an electric power metering terminal according to an embodiment of the present invention;
fig. 2 is a schematic diagram of a chip of an electric power metering terminal according to an embodiment of the present invention;
fig. 3 is a schematic structural diagram of an electric power metering platform according to an embodiment of the present invention;
fig. 4 is a schematic structural diagram of another power metering platform according to an embodiment of the present invention;
fig. 5 is a schematic flow chart of a method for receiving by a terminal sending platform according to an embodiment of the present invention;
fig. 6 is a flowchart illustrating a method for receiving by a platform sending terminal according to an embodiment of the present invention.
Detailed Description
The present invention is described in terms of particular embodiments, other advantages and features of the invention will become apparent to those skilled in the art from the following disclosure, and it is to be understood that the described embodiments are merely exemplary of the invention and that it is not intended to limit the invention to the particular embodiments disclosed. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Most of the current power metering terminals, namely intelligent electric meters, adopt a 2G communication technology. The 2G communication technology is the standard of the 20 th century in the 90 s, the communication efficiency is low, and the safety mechanism is insufficient. The safety environment on which the communication of the electric meter depends also lacks corresponding hardware protection, the data transmitted from a remote main station or uploaded from a terminal lacks encryption and verification, the communication transmission safety, the metering safety and the like of the intelligent electric meter have greater risks, for example, a user may change the uploaded electricity consumption privately, so that the electricity fee is paid less; a hacker may launch an attack on the user or platform.
Based on this, the present application proposes an electric power metering terminal, refer to a schematic structural diagram of an electric power metering terminal shown in fig. 1, and the terminal includes:
the power data acquisition module 11 is used for acquiring power data;
an encryption module 12, configured to encrypt the power data with a key pre-stored in a chip security domain in the terminal;
the chip is a security chip with a security function and an SIM remote configuration function; it is worth emphasizing that the key is stored in a secure domain in the chip. Others cannot crack to obtain the key.
According to the invention, a plurality of security domains are designed on a security chip, which is shown in a schematic diagram of a chip of an electric power metering terminal shown in fig. 2; the chip includes: an eSIM domain and an application security domain. The eSIM domain conforms to the SIM card remote configuration management specification defined by GSMA SGP.22, and can be used for downloading, inquiring, activating and switching operator card data; the application security domain is mainly used for power communication security, comprises data encryption, signature and verification, and supports symmetric and asymmetric algorithms and national security algorithms.
The signature module 13 is configured to perform encryption digest operation on the power data to obtain a first power data digest;
wherein, the encryption digest operation can be realized by a Hash algorithm; the hash algorithm is also called a digest algorithm; a piece of data can be converted into a string of fixed-length character strings; the string is called the abstract of the data; can be used as a signature for the data;
and the sending module 14 is configured to send the first power data summary and the encrypted power data to the power metering platform.
According to the electric power metering terminal, the secret key is stored in the security domain of the chip in advance, and after the secret key is encrypted, a user cannot crack the secret key, and only a manufacturer of the chip and an electric power management department know the secret key of the chip; the user does not know the key so that the user cannot crack the encrypted data; therefore, the electricity utilization data, especially the electricity consumption, are prevented from being changed by a user due to privacy, the accuracy of electricity utilization statistics of an electric power system department is improved, electricity stealing is prevented, and the possibility that hackers attack an electricity utilization metering platform is reduced.
In one embodiment, the system further comprises a network judging module, wherein the network judging module is used for acquiring network signal strengths of different operators;
determining the network of the operator with the maximum signal intensity;
and selecting the network access of the operator with the maximum signal strength.
The electric power metering terminal is also called as an intelligent electric meter, and a network contact platform of an operator can be used; if the types of the base stations near the electric meter are different, the signal intensity is different; for example, if the moving base station is closer to the electric meter of the present application; the moving signal is stronger; at another location, another meter may be closer to the communicating base station and the communicating signal is stronger. If the actual situation changes, the situation of communicated base station maintenance and the like causes communicated signal difference, and the moving signal is stronger than the communicated signal, the moving signal is automatically connected; therefore, the chip of the application is not fixedly connected with a network belonging to a certain operator; but can be selected according to the actual network strength, thereby improving the network performance of the electric meter.
In one embodiment, the receiving module is further configured to receive a first instruction digest sent by the electric power metering platform and an instruction encrypted by using a pre-stored key;
the instruction abstract is obtained by the electric power metering platform through encryption abstract operation on the instruction sent to the electric power metering terminal;
the decryption module is used for decrypting the encrypted instruction by adopting a secret key stored in the chip security domain in advance to obtain an instruction; the verification module is used for carrying out encryption digest operation on the instruction to obtain a second instruction digest;
judging whether the first instruction abstract and the second instruction abstract are the same;
if so, determining that the signature is verified;
and if the first instruction digest and the second instruction digest are not the same, determining that the verification is not passed.
If the verification is not passed, the instruction sent by the platform is tampered by a hacker; for example, a hacker may change the power-off command into a power-on command; if the hacker's instruction is executed incorrectly, it will cause a significant financial loss of property; so, upon determining that the validation did not pass, the instruction is not executed. The safety is improved.
The application also provides an electric power metering platform, which is shown in a schematic structural diagram of the electric power metering platform shown in the attached figure 3; the platform includes:
the receiving module 31 is used for receiving a first power data digest sent by the power metering terminal and power data encrypted by a secret key stored in a chip security domain in the terminal in advance;
the decryption module 32 is configured to decrypt the encrypted power data with a pre-stored key to obtain power data;
the verification module 33 is configured to perform an encryption digest operation on the electric power data by using a hash algorithm to obtain a second electric power data digest;
judging whether the first power data abstract and the second power data abstract are the same;
if not, the verification is different. Determining that the verification is passed if the first and second power data digests are the same.
In one embodiment, refer to a schematic structural diagram of another electric power metering platform shown in fig. 4;
the system also comprises an encryption machine HSM; the key is pre-stored in the encryption engine. A plurality of device IDs are stored in the encryption machine; and an AES key corresponding to each device ID. The device ID and the corresponding AES key are also stored in the security chip; the equipment refers to an intelligent ammeter of a user; the chip can be configured individually by the micro-processing unit MCU of the concentrator. The power grid service gateway is used for sending the power data to the power core system.
The electric power metering platform provided by the invention can be used for encrypting and decrypting through the built-in secret key, and the secret key is pre-stored in the encryption machine, so that the safety is improved. If the verification is not passed, the data is falsified. For example, if the user modifies the electricity consumption data for private interest, an alarm is given; and ignoring power data sent by the user;
the alarm may send information to a management server of a power supervision department indicating that the power data of the user is in question; after obtaining the alarm information, the electric power supervision department can investigate the alarm information in detail.
In one embodiment, the method further comprises: the signature module is used for calculating the instruction sent to the electric power metering terminal by adopting a Hash algorithm to obtain a first instruction abstract;
the encryption module is used for encrypting the first instruction digest by adopting a prestored secret key;
and the sending module is used for sending the encrypted first instruction abstract to the electric power metering terminal.
In one embodiment, the encryption engine stores the user's identification in advance; and the corresponding relation between the user identification and the secret key;
the relationship between the user's identity and the key comprises one of:
each user identification corresponds to a key, and the keys of the users are different; if there are 100 users, there are 100 keys different from each other;
a plurality of user identifications correspond to the same secret key; if there are 100 users, the keys may be only 10, different from each other; 10 users share one key.
The following describes in detail the method for receiving by the terminal sending platform, referring to the flow diagram of the method for receiving by the terminal sending platform shown in fig. 5;
step S501, the electric power metering terminal acquires electric power data;
wherein the power data comprises power usage data of the user over a predetermined period of time; other sensor measurements may also be included;
step S502, encrypting the first power data by adopting a secret key pre-stored in a chip security domain in the terminal;
step S503, carrying out encryption digest operation on the electric power data to obtain a first electric power data digest;
step S504, sending the first electric power data abstract and the encrypted electric power data to an electric power metering platform;
step S505, the electric power metering platform decrypts the encrypted electric power data by adopting a prestored secret key to obtain electric power data;
step S506, the electric power metering platform adopts an encryption abstract algorithm to perform encryption abstract operation on the first electric power data to obtain a second electric power data abstract;
step S507, the electric power metering platform judges whether the first electric power data abstract and the second electric power data abstract are the same; if not, the verification is different; if they are the same, the verification passes
The following describes in detail a method for receiving by a platform sending terminal, referring to the flowchart of the method for receiving by a platform sending terminal shown in fig. 6;
step S601, the electric power metering platform adopts an encryption abstract algorithm to calculate the instruction sent to the electric power metering terminal to obtain a first instruction abstract;
step S602, the electric power metering platform adopts a pre-stored key to encrypt the instruction;
step S603, the electric power metering platform sends the first instruction abstract and the encrypted instruction to the electric power metering terminal;
step S604, the power metering terminal decrypts the encrypted instruction by adopting a secret key pre-stored in a chip security domain to obtain an instruction;
step S606, the power metering terminal adopts an encryption digest algorithm to perform encryption digest operation on the instruction to obtain a second instruction digest;
step S607, the electric power metering terminal judges whether the first instruction abstract and the second instruction abstract are the same; if not, the verification is different; if they are the same, the verification passes.
The application also provides an electric power metering system which is characterized by comprising the electric power metering terminal and the electric power metering platform.
Although the invention has been described in detail above with reference to a general description and specific examples, it will be apparent to one skilled in the art that modifications or improvements may be made thereto based on the invention. Accordingly, such modifications and improvements are intended to be within the scope of the invention as claimed.
Claims (10)
1. An electricity metering terminal comprising:
the electric power data acquisition module is used for acquiring electric power data;
the encryption module is used for encrypting the power data by adopting a secret key pre-stored in a chip security domain in the terminal;
the signature module is used for carrying out encryption summary operation on the electric power data to obtain a first electric power data summary;
and the sending module is used for sending the first electric power data abstract and the encrypted electric power data to an electric power metering platform.
2. The power metering terminal of claim 1, further comprising a network determination module, wherein the network determination module is configured to obtain network signal strengths of different operators;
determining the network of the operator with the maximum signal intensity;
and selecting the network access of the operator with the maximum signal strength.
3. The power metering terminal of claim 1, wherein the receiving module is further configured to receive a first instruction digest sent by the power metering platform and an instruction encrypted by using a pre-stored key;
the instruction abstract is obtained by the electric power metering platform through encryption abstract operation on the instruction sent to the electric power metering terminal;
the decryption module is used for decrypting the encrypted instruction by adopting a secret key stored in the chip security domain in advance to obtain an instruction;
the verification module is used for carrying out encryption digest operation on the instruction to obtain a second instruction digest;
judging whether the first instruction abstract and the second instruction abstract are the same;
if so, the signature verification is determined to be passed.
4. The power metering terminal of claim 3, wherein the verification module is further configured to,
and if the first instruction digest and the second instruction digest are not the same, determining that the verification is not passed.
5. An electricity metering platform, comprising:
the receiving module is used for receiving a first electric power data abstract sent by the electric power metering terminal and electric power data encrypted by a secret key pre-stored in a chip security domain in the terminal;
the decryption module is used for decrypting the encrypted power data by adopting a prestored secret key to obtain power data;
the verification module is used for carrying out encryption and summarization operation on the electric power data by adopting a Hash algorithm to obtain a second electric power data summary;
judging whether the first power data abstract and the second power data abstract are the same;
if not, the verification is different.
6. The power metering platform of claim 5, wherein the verification module is further to:
determining that the verification is passed if the first and second power data digests are the same.
7. The power metering platform of claim 5, further comprising:
the encryption module is used for encrypting the instruction sent to the electric power metering terminal by adopting a prestored secret key;
the signature module is used for calculating the instruction sent to the electric power metering terminal by adopting a Hash algorithm to obtain a first instruction abstract;
and the sending module is used for sending the first instruction abstract and the encrypted instruction to the electric power metering terminal.
8. The power metering platform of claim 7, further comprising an encryptor;
the key is pre-stored in the encryption engine.
9. The electricity metering platform of claim 8, wherein the encryption engine pre-stores an identification of a user; and the corresponding relation between the user identification and the secret key;
the relationship between the user's identity and the key comprises one of:
each user identification corresponds to a key, and the keys of the users are different;
multiple user identifications correspond to the same key.
10. An electricity metering system, comprising an electricity metering terminal according to any one of claims 1 to 4 and an electricity metering platform according to any one of claims 5 to 9.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202010143946.9A CN111404886A (en) | 2020-03-04 | 2020-03-04 | Electric power metering terminal and electric power metering platform |
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| CN202010143946.9A CN111404886A (en) | 2020-03-04 | 2020-03-04 | Electric power metering terminal and electric power metering platform |
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| CN112039664A (en) * | 2020-08-31 | 2020-12-04 | 宁夏隆基宁光仪表股份有限公司 | Data communication method and system suitable for intelligent electric meter |
| CN112333797A (en) * | 2020-10-23 | 2021-02-05 | 广西电网有限责任公司 | Intelligent switching system and method for terminal communication card operator based on eSIM technology |
| CN113936448A (en) * | 2021-11-02 | 2022-01-14 | 广东电网有限责任公司 | Electric energy metering data transmission system |
| CN114338134A (en) * | 2021-12-27 | 2022-04-12 | 新疆航天信息有限公司 | Data acquisition management method based on state secret |
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Application publication date: 20200710 |