CN114302258A - Intelligent gas meter safety meter reading method and system - Google Patents
Intelligent gas meter safety meter reading method and system Download PDFInfo
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- CN114302258A CN114302258A CN202111570879.XA CN202111570879A CN114302258A CN 114302258 A CN114302258 A CN 114302258A CN 202111570879 A CN202111570879 A CN 202111570879A CN 114302258 A CN114302258 A CN 114302258A
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Abstract
The invention discloses a safe meter reading method and a safe meter reading system for an intelligent gas meter, wherein the method comprises the steps of storing a communication root key and a signature root key in an encryption machine, generating an intelligent gas meter communication key and an intelligent gas meter signature key according to the communication root key and the signature root key, writing the intelligent gas meter communication key and the intelligent gas meter signature key into the intelligent gas meter, and transmitting data to a meter reading system by the intelligent gas meter through an intelligent gas meter signature key pair and the intelligent gas meter communication key; by arranging the encryption machine and storing the communication root key and the signature root key in the encryption machine, the communication key of the intelligent gas meter and the signature key of the intelligent gas meter can be generated, the intelligent gas meter can encrypt transmitted data through the signature key of the intelligent gas meter, the data is prevented from being tampered and stolen, the intelligent gas meter transmits the encrypted data to a meter reading system through the communication key of the intelligent gas meter, and the safety of data transmission is further improved.
Description
Technical Field
The invention relates to the technical field of intelligent gas meter reading, in particular to a safe intelligent gas meter reading method and system.
Background
The internet of things gas meter is an intelligent gas meter which communicates and manages through a mobile cellular network, the existing internet of things gas meter has various communication modes, the communication modes mainly comprise three communication modes, namely GPRS network communication, 3G/4G network communication and NB-IoT narrowband cellular network communication, the three communication modes have advantages respectively, however, transmission data are not encrypted in all the three communication modes, and the transmission data are easily tampered and stolen.
Disclosure of Invention
In view of this, the invention provides a method and a system for safely reading an intelligent gas meter, which can overcome the defect that the transmission data of the existing intelligent gas meter is easy to be tampered and stolen.
The technical scheme of the invention is realized as follows:
a safe meter reading method for an intelligent gas meter is based on a meter reading system, the intelligent gas meter and an encryption machine, and specifically comprises the following steps:
step S1, storing the communication root key and the signature root key in the encryption machine;
step S2, generating a communication key of the intelligent gas meter and a signature key of the intelligent gas meter according to the communication root key and the signature root key, and writing the communication key of the intelligent gas meter and the signature key of the intelligent gas meter into the intelligent gas meter;
and step S3, the intelligent gas meter encrypts the transmission data through the signature key of the intelligent gas meter and transmits the encrypted data to a meter reading system through the communication key of the intelligent gas meter, thereby realizing the safe meter reading of the intelligent gas meter.
As a further alternative of the intelligent gas meter safety meter reading method, the step S2 specifically includes the following steps:
step S21, obtaining ID information of the intelligent gas meter;
step S22, the encryption machine generates an intelligent gas meter communication key and an intelligent gas meter signature key according to the communication root key, the signature root key and the ID information of the intelligent gas meter;
and step S23, writing the communication key of the intelligent gas meter and the signature key of the intelligent gas meter into the intelligent gas meter.
As a further alternative of the intelligent gas meter safety meter reading method, the method further comprises the step of transmitting data to the intelligent gas meter by a meter reading system, and specifically comprises the following steps:
step S4, the meter reading system obtains a first temporary communication key and a first signature key according to the encryption machine;
step S5, the meter reading system encrypts data to be transmitted according to the first signature key and transmits the encrypted data to the intelligent gas meter according to the first temporary communication key;
and step S6, the intelligent gas meter decrypts according to the signature key of the intelligent gas meter, so that the data transmission from the meter reading system to the intelligent gas meter is realized.
As a further alternative of the intelligent gas meter safety meter reading method, the step S4 of obtaining the first temporary communication key according to the encryption machine specifically includes the following steps:
step S41, obtaining ID information of the target intelligent gas meter;
step S42, the encryption machine calculates the communication key of the target intelligent gas meter according to the communication root key and the ID information of the target intelligent gas meter;
and step S43, generating a first temporary communication key according to the communication key of the target intelligent gas meter.
As a further alternative of the intelligent gas meter safety meter reading method, the step S4 of obtaining the first signature key according to the encryption machine specifically includes the following steps:
step S44, obtaining ID information of the target intelligent gas meter;
and step S45, the encryption machine generates a first signature key according to the signature root key and the ID information of the target intelligent gas meter.
The system comprises a meter reading system, an intelligent gas meter and an encryption machine, wherein the meter reading system is respectively connected with the intelligent gas meter and the encryption machine, the encryption machine is used for storing a communication root key and a signature root key and writing the communication key of the intelligent gas meter and the signature key of the intelligent gas meter into the intelligent gas meter, and the intelligent gas meter is used for transmitting data to the meter reading system.
As a further alternative of the intelligent gas meter safety meter reading system, the encryption machine includes:
the storage module is used for communicating the root key and signing the root key;
the first acquisition module is used for acquiring the ID information of the intelligent gas meter;
the generating module is used for generating a communication key of the intelligent gas meter and a signature key of the intelligent gas meter according to the communication root key, the signature root key and the ID information of the intelligent gas meter;
and the writing module is used for writing the communication key of the intelligent gas meter and the signature key of the intelligent gas meter into the intelligent gas meter.
As a further alternative of the intelligent gas meter safety meter reading system, the meter reading system comprises:
the second acquisition module is used for acquiring the first temporary communication key and the first signature key according to the encryption machine;
the encryption module is used for encrypting the data to be transmitted according to the first signature key;
and the transmission module is used for transmitting the encrypted data to the intelligent gas meter according to the first temporary communication key.
The invention has the beneficial effects that: the encryption machine is arranged, the communication root key and the signature root key are stored in the encryption machine, the communication key of the intelligent gas meter and the signature key of the intelligent gas meter can be generated, the intelligent gas meter can encrypt transmitted data through the signature key of the intelligent gas meter, the data are prevented from being tampered and stolen, the intelligent gas meter transmits the encrypted data to a meter reading system through the communication key of the intelligent gas meter, the safety of data transmission is further improved, and the defect that the transmitted data of the existing intelligent gas meter are easily tampered and stolen is effectively overcome.
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 is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is a schematic flow chart of a safe meter reading method for an intelligent gas meter according to the present invention;
fig. 2 is a composition diagram of a safety meter reading system for an intelligent gas meter according to the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments. 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.
Referring to fig. 1-2, a method for safely reading an intelligent gas meter, based on a meter reading system, an intelligent gas meter and an encryption machine, specifically includes the following steps:
step S1, storing the communication root key and the signature root key in the encryption machine;
step S2, generating a communication key of the intelligent gas meter and a signature key of the intelligent gas meter according to the communication root key and the signature root key, and writing the communication key of the intelligent gas meter and the signature key of the intelligent gas meter into the intelligent gas meter;
and step S3, the intelligent gas meter encrypts the transmission data through the signature key of the intelligent gas meter and transmits the encrypted data to a meter reading system through the communication key of the intelligent gas meter, thereby realizing the safe meter reading of the intelligent gas meter.
In this embodiment, by setting the encryption machine and storing the communication root key and the signature root key in the encryption machine, the communication key of the intelligent gas meter and the signature key of the intelligent gas meter can be generated, the intelligent gas meter can encrypt the transmitted data through the signature key of the intelligent gas meter, so that the data is prevented from being tampered and stolen, the intelligent gas meter transmits the encrypted data to the meter reading system through the communication key of the intelligent gas meter, the security of the transmitted data is further improved, and the defect that the transmitted data of the existing intelligent gas meter is easily tampered and stolen is effectively overcome.
It should be noted that the communication root key is used for calculating and deriving a communication key, the signature root key is used for calculating and deriving a signature key, the communication key is used for encrypted communication between the meter reading system and the gas meter, and the signature key is used for verifying an authorization certificate between the meter reading system and the gas meter, that is, the signature key is used for encrypting transmitted data by the meter reading system and the gas meter.
Preferably, the step S2 specifically includes the following steps:
step S21, obtaining ID information of the intelligent gas meter;
step S22, the encryption machine generates an intelligent gas meter communication key and an intelligent gas meter signature key according to the communication root key, the signature root key and the ID information of the intelligent gas meter;
and step S23, writing the communication key of the intelligent gas meter and the signature key of the intelligent gas meter into the intelligent gas meter.
In this embodiment, by obtaining the ID information of the intelligent gas meters, the intelligent gas meter communication key and the intelligent gas meter signature key of each intelligent gas meter can be accurately generated, so that each intelligent gas meter has a unique intelligent gas meter communication key and an intelligent gas meter signature key, and each intelligent gas meter can encrypt data according to the unique intelligent gas meter signature key and communicate with the meter reading system according to the unique intelligent gas meter communication key, thereby further improving the security of data transmission.
Preferably, the method further comprises the step of transmitting data to the intelligent gas meter by the meter reading system, and the method specifically comprises the following steps:
step S4, the meter reading system obtains a first temporary communication key and a first signature key according to the encryption machine;
step S5, the meter reading system encrypts data to be transmitted according to the first signature key and transmits the encrypted data to the intelligent gas meter according to the first temporary communication key;
and step S6, the intelligent gas meter decrypts according to the signature key of the intelligent gas meter, so that the data transmission from the meter reading system to the intelligent gas meter is realized.
In this embodiment, when the meter reading system transmits data to the intelligent gas meter, the security of data transmission between the meter reading system and the intelligent gas meter can be further ensured by acquiring the first temporary communication key and the first signature key, encrypting the data to be transmitted through the first signature key, and transmitting the encrypted data to the intelligent gas meter through the first temporary communication key.
Preferably, the step S4 of obtaining the first temporary communication key according to the encryption device specifically includes the following steps:
step S41, obtaining ID information of the target intelligent gas meter;
step S42, the encryption machine calculates the communication key of the target intelligent gas meter according to the communication root key and the ID information of the target intelligent gas meter;
and step S43, generating a first temporary communication key according to the communication key of the target intelligent gas meter.
In this embodiment, the meter reading system calculates a communication key of a target intelligent gas meter by using a stored communication root key and ID information of the target intelligent gas meter in an encryption machine, generates a first temporary communication key by using the communication key, time and random information of the target intelligent gas meter, and sends the time and random information to the target intelligent gas meter, the intelligent gas meter generates a temporary communication key by using its own communication key, time and random information, and both parties can use the temporary communication key to perform encrypted communication; it should be noted that the target intelligent gas meter is an intelligent gas meter of which the meter reading system wants to transmit data.
Preferably, the step S4 of obtaining the first signing key according to the encryption engine specifically includes the following steps:
step S44, obtaining ID information of the target intelligent gas meter;
and step S45, the encryption machine generates a first signature key according to the signature root key and the ID information of the target intelligent gas meter.
In this embodiment, the encryption machine calculates the signature key of the target intelligent gas meter according to the signature root key and the ID information of the target intelligent gas meter, the meter reading system encrypts/HMAC the transmission data using the key to form a data signature, then the meter reading system sends the encrypted data and the data signature to the target intelligent gas meter, and the target intelligent gas meter decrypts and verifies the transmission data through the signature key thereof, thereby ensuring that the transmission data is not easily tampered.
The system comprises a meter reading system, an intelligent gas meter and an encryption machine, wherein the meter reading system is respectively connected with the intelligent gas meter and the encryption machine, the encryption machine is used for storing a communication root key and a signature root key and writing the communication key of the intelligent gas meter and the signature key of the intelligent gas meter into the intelligent gas meter, and the intelligent gas meter is used for transmitting data to the meter reading system.
In this embodiment, by setting the encryption machine and storing the communication root key and the signature root key in the encryption machine, the communication key of the intelligent gas meter and the signature key of the intelligent gas meter can be generated, the intelligent gas meter can encrypt the transmitted data through the signature key of the intelligent gas meter, so that the data is prevented from being tampered and stolen, the intelligent gas meter transmits the encrypted data to the meter reading system through the communication key of the intelligent gas meter, the security of the transmitted data is further improved, and the defect that the transmitted data of the existing intelligent gas meter is easily tampered and stolen is effectively overcome.
It should be noted that the communication root key is used for calculating and deriving a communication key, the signature root key is used for calculating and deriving a signature key, the communication key is used for encrypted communication between the meter reading system and the gas meter, and the signature key is used for verifying an authorization certificate between the meter reading system and the gas meter, that is, the signature key is used for encrypting transmitted data by the meter reading system and the gas meter; in addition, the intelligent gas meter is connected with the encryption machine during initialization, and the encryption machine is not connected when the intelligent gas meter is installed and used on site after the communication key of the intelligent gas meter and the signature key of the intelligent gas meter are written in.
Preferably, the encryption device includes:
the storage module is used for communicating the root key and signing the root key;
the first acquisition module is used for acquiring the ID information of the intelligent gas meter;
the generating module is used for generating a communication key of the intelligent gas meter and a signature key of the intelligent gas meter according to the communication root key, the signature root key and the ID information of the intelligent gas meter;
and the writing module is used for writing the communication key of the intelligent gas meter and the signature key of the intelligent gas meter into the intelligent gas meter.
In this embodiment, by obtaining the ID information of the intelligent gas meters, the intelligent gas meter communication key and the intelligent gas meter signature key of each intelligent gas meter can be accurately generated, so that each intelligent gas meter has a unique intelligent gas meter communication key and an intelligent gas meter signature key, and each intelligent gas meter can encrypt data according to the unique intelligent gas meter signature key and communicate with the meter reading system according to the unique intelligent gas meter communication key, thereby further improving the security of data transmission.
Preferably, the meter reading system includes:
the second acquisition module is used for acquiring the first temporary communication key and the first signature key according to the encryption machine;
the encryption module is used for encrypting the data to be transmitted according to the first signature key;
and the transmission module is used for transmitting the encrypted data to the intelligent gas meter according to the first temporary communication key.
In this embodiment, when the meter reading system transmits data to the intelligent gas meter, the security of data transmission between the meter reading system and the intelligent gas meter can be further ensured by acquiring the first temporary communication key and the first signature key, encrypting the data to be transmitted through the first signature key, and transmitting the encrypted data to the intelligent gas meter through the first temporary communication key.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.
Claims (8)
1. A safe meter reading method for an intelligent gas meter is characterized by being based on a meter reading system, the intelligent gas meter and an encryption machine and specifically comprising the following steps of:
step S1, storing the communication root key and the signature root key in the encryption machine;
step S2, generating a communication key of the intelligent gas meter and a signature key of the intelligent gas meter according to the communication root key and the signature root key, and writing the communication key of the intelligent gas meter and the signature key of the intelligent gas meter into the intelligent gas meter;
and step S3, the intelligent gas meter encrypts the transmission data through the signature key of the intelligent gas meter and transmits the encrypted data to a meter reading system through the communication key of the intelligent gas meter, thereby realizing the safe meter reading of the intelligent gas meter.
2. The intelligent gas meter safety meter reading method according to claim 1, wherein the step S2 specifically comprises the following steps:
step S21, obtaining ID information of the intelligent gas meter;
step S22, the encryption machine generates an intelligent gas meter communication key and an intelligent gas meter signature key according to the communication root key, the signature root key and the ID information of the intelligent gas meter;
and step S23, writing the communication key of the intelligent gas meter and the signature key of the intelligent gas meter into the intelligent gas meter.
3. The intelligent gas meter safety meter reading method according to claim 1 or 2, wherein the method further comprises a meter reading system transmitting data to the intelligent gas meter, and specifically comprises the following steps:
step S4, the meter reading system obtains a first temporary communication key and a first signature key according to the encryption machine;
step S5, the meter reading system encrypts data to be transmitted according to the first signature key and transmits the encrypted data to the intelligent gas meter according to the first temporary communication key;
and step S6, the intelligent gas meter decrypts according to the signature key of the intelligent gas meter, so that the data transmission from the meter reading system to the intelligent gas meter is realized.
4. The intelligent gas meter safety meter reading method according to claim 3, wherein the step S4 of obtaining the first temporary communication key according to the encryption machine specifically includes the following steps:
step S41, obtaining ID information of the target intelligent gas meter;
step S42, the encryption machine calculates the communication key of the target intelligent gas meter according to the communication root key and the ID information of the target intelligent gas meter;
and step S43, generating a first temporary communication key according to the communication key of the target intelligent gas meter.
5. The intelligent gas meter safety meter reading method according to claim 4, wherein the step S4 of obtaining the first signature key according to the encryption machine specifically includes the following steps:
step S44, obtaining ID information of the target intelligent gas meter;
and step S45, the encryption machine generates a first signature key according to the signature root key and the ID information of the target intelligent gas meter.
6. The intelligent gas meter safety meter reading system is characterized by comprising a meter reading system, an intelligent gas meter and an encryption machine, wherein the meter reading system is respectively connected with the intelligent gas meter and the encryption machine, the encryption machine is used for storing a communication root key and a signature root key and writing the intelligent gas meter communication key and the intelligent gas meter signature key into the intelligent gas meter, and the intelligent gas meter is used for transmitting data to the meter reading system.
7. The system according to claim 6, wherein the encryption engine comprises:
the storage module is used for communicating the root key and signing the root key;
the first acquisition module is used for acquiring the ID information of the intelligent gas meter;
the generating module is used for generating a communication key of the intelligent gas meter and a signature key of the intelligent gas meter according to the communication root key, the signature root key and the ID information of the intelligent gas meter;
and the writing module is used for writing the communication key of the intelligent gas meter and the signature key of the intelligent gas meter into the intelligent gas meter.
8. The intelligent gas meter safety meter reading system according to claim 7, wherein the meter reading system comprises:
the second acquisition module is used for acquiring the first temporary communication key and the first signature key according to the encryption machine;
the encryption module is used for encrypting the data to be transmitted according to the first signature key;
and the transmission module is used for transmitting the encrypted data to the intelligent gas meter according to the first temporary communication key.
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