CN113947843A - Operation method and system for deducting token based on amount in STS (service standard specification) prepayment system - Google Patents
Operation method and system for deducting token based on amount in STS (service standard specification) prepayment system Download PDFInfo
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- G—PHYSICS
- G07—CHECKING-DEVICES
- G07F—COIN-FREED OR LIKE APPARATUS
- G07F15/00—Coin-freed apparatus with meter-controlled dispensing of liquid, gas or electricity
- G07F15/003—Coin-freed apparatus with meter-controlled dispensing of liquid, gas or electricity for electricity
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- G—PHYSICS
- G07—CHECKING-DEVICES
- G07F—COIN-FREED OR LIKE APPARATUS
- G07F15/00—Coin-freed apparatus with meter-controlled dispensing of liquid, gas or electricity
- G07F15/06—Coin-freed apparatus with meter-controlled dispensing of liquid, gas or electricity with means for prepaying basic charges, e.g. rent for meters
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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
- H04L9/06—Cryptographic mechanisms or cryptographic arrangements for secret or secure communications; Network security protocols the encryption apparatus using shift registers or memories for block-wise or stream coding, e.g. DES systems or RC4; Hash functions; Pseudorandom sequence generators
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Abstract
The invention relates to an operation method and a system for deducting token based on the amount in an STS (service standard specification) prepaid system, wherein the operation method for deducting token based on the amount in the STS prepaid system comprises the following steps: s1, calling a security module of an STS prepayment system according to requirements, generating a series of token codes with 20 digits, and issuing the generated token codes to a meter in a remote mode; s2, the meter receives the issued token code, decrypts the received token code to obtain a plaintext, and calculates a deduction value; wherein the deduction value is generated based on a management class token of the STS prepaid system; s3, automatically deducting the deduction value obtained by calculation from the current surplus amount by the meter to obtain the surplus amount after deduction; and S4, judging whether the remaining amount is negative and exceeds the set credit amount, and if so, automatically tripping the meter.
Description
Technical Field
The invention relates to the technical field of electric meters, in particular to an operation method and system for deducting token based on quota in an STS (service standard specification) prepayment system.
Background
The sts (standard Transfer specification), which is a standard transmission protocol, is an international standard approved and issued by the international standards association, and mainly provides a reference basis for implementing functions such as encryption and decryption, prepayment, and the like of an electric energy meter. STS code type prepayment electric energy meter transmits a series of prepayment management related instructions such as electricity purchasing code, encryption and decryption, key management and the like according to the standard protocol.
Because the token type defined by the STS standard only includes three types of recharging, managing and testing, and other types of tokens are not defined, the transmission medium conforming to the STS standard is classified into a digital type and a magnetic card type at present, and the traditional mode is to recharge or otherwise operate a meter through local manual input of the token or magnetic card induction. If the meter is accessed into the AMR system to realize remote recharging and other operations, a certain probability of misoperation exists, and remedial measures are needed when the misoperation of an operator occurs.
In addition, the management of the shared charge of residents is dispersed, the users are required to go to the property service provider for payment in each payment period, the management is not uniform, the serious payment delay phenomenon exists, and the charge of the service organization is not beneficial.
For example, patent publication No. CN108038979A discloses a method for sustainable operation of a pre-paid system based on STS, comprising the steps of: when the reference date is switched, clearing the TID stack in the meter and storing the secret value; calling an encryption box according to the requirement to obtain a string of 20 numbers of Token0, and converting the string of 20 numbers into a 16-system representation; taking out 2bits of Token types to obtain 64bits of Token0 data ciphertext, and adding the Token0 data ciphertext and the secret value to obtain 64bits of Token data; inserting the extracted 2-bit Token type into the Token data, and converting the Token data into 20-digit tokens; after receiving the Token, the meter analyzes the Token to obtain Token0, performs CRC check and TID identification, and after the checksum identification is successful, the meter stores the TID of Token0 and executes corresponding operation. Although the above patent can make the existing STS prepaid system continuously usable without replacing the encryption box, the problem still remains that the management of the shared charges of residents is relatively dispersed and the management is not uniform.
Therefore, aiming at the technical problems, in order to make the meter meeting the STS standard better access the AMR system, the property service provider timely collects the shared fee and can carry out unified management, and the abnormal operation of remote recharging has remedial measures, an operation method and a system for deducting the token based on the quota in the STS prepayment system are provided
Disclosure of Invention
The invention aims to provide an operation method and system for deducting token based on the amount in an STS prepayment system, aiming at the defects of the prior art, and aiming at the meter incorporated into an AMR system, the method and system can ensure that the shared charge of community property service providers in each period can be automatically deducted by a background through issuing the deduction token so as to be convenient for timely collection, and simultaneously provide a reasonable solution for the remote recharging operation errors of the meter.
In order to achieve the purpose, the invention adopts the following technical scheme:
an operation method for deducting token based on credit in STS prepaid system includes:
s1, calling a security module of an STS prepayment system according to requirements, generating a series of token codes with 20 digits, and issuing the generated token codes to a meter in a remote mode;
s2, the meter receives the issued token code, decrypts the received token code to obtain a plaintext, and calculates a deduction value; wherein the deduction value is generated based on a management class token of the STS prepaid system;
s3, automatically deducting the deduction value obtained by calculation from the current surplus amount by the meter to obtain the surplus amount after deduction;
and S4, judging whether the remaining amount is negative and exceeds the set credit amount, and if so, automatically tripping the meter.
Further, the step S1 is specifically:
s11, acquiring a token of 66bits, and dividing the bit string of the 66bits into a class of 2bits and a data block of 64 bits;
s12, encrypting a 64bits data block through a DKGA04 algorithm;
s13, replacing class of 2bits with bit27 and bit28 in a 64-bit data block, and combining to obtain a 66-bit data block;
s14, converting the data block of 66bits into token of 20-bit number.
Further, the step S2 is specifically:
s21, replacing 2bits in the 66bits data block with bit27 and bit28, and extracting a token type of 2bits and a ciphertext data block of 64 bits;
s22, decrypting the 64bits ciphertext data block through a DKGA04 algorithm;
s23, extracting a first deduction amount value field numerical value in a 64bits plaintext bit string;
s24, calculating a second deduction value according to the extracted first deduction value field numerical value.
Further, in step S2, a deduction value is calculated, which is expressed as:
t represents a deduction value; m represents a mantissa; n represents an integer of 1 to e; e represents an index of 10.
Further, after the step S4, the method further includes:
s5, judging whether recharging information exists in recharging, and if yes, compensating the credit limit;
s6, judging whether the load switch needs to act, and if so, carrying out power-on operation; if not, no processing is carried out.
Further, in step S4, it is determined whether the remaining quota is a negative number, and if not, no processing is performed.
Correspondingly, an operation system for deducting token based on credit in STS prepaid system is also provided, which comprises:
the generating module is used for calling a safety module of the STS prepayment system according to the requirement, generating a series of 20-digit token codes and sending the generated token codes to the meter in a remote mode;
the first decryption module is used for receiving the issued token code by the meter, decrypting the received token code to obtain a plaintext and calculating a deduction value; wherein the deduction value is generated based on a management class token of the STS prepaid system;
the deduction module is used for metering a deduction amount value obtained by deducting calculation from the current surplus amount automatically to obtain the surplus amount after deduction;
and the judging module is used for judging whether the remaining credit line is a negative number and exceeds the set credit line.
Further, the generating module specifically includes:
the acquisition module is used for acquiring a token of 66bits and dividing the bit string of the 66bits into a class of 2bits and a data block of 64 bits;
the encryption module is used for encrypting the 64bits data block through a DKGA04 algorithm;
the first replacement module is used for replacing class of 2bits with bit27 and bit28 in a 64-bit data block and combining the class and the bit27 and the bit28 to obtain a 66-bit data block;
and the conversion module is used for converting the 66bits data block into a token of 20-bit number.
Further, the first decryption module specifically includes:
the second replacement module is used for replacing 2bits in the 66bits data block with bit27 and bit28, and extracting a token type of 2bits and a ciphertext data block of 64 bits;
the second decryption module is used for decrypting the 64bits ciphertext data block through a DKGA04 algorithm;
the extraction module is used for extracting the first deduction amount value field numerical value in the 64bits plaintext bit string;
and the calculating module is used for calculating a second deduction value according to the extracted first deduction value field numerical value.
Further, the deduction value is calculated in the first decryption module and is expressed as:
wherein t represents a deduction value; m represents a mantissa; n represents an integer of 1 to e; e represents an index of 10.
Compared with the prior art, the invention has the following beneficial effects:
1. the profit and the income of the property service provider for the shared fee are improved, and the property service personnel do not need to go to the home repeatedly for urging payment;
2. the uniform management and payment of the shared fees are realized only by the settlement of the power company and the property service provider;
3. the quantitative deduction of the residual amount of the meter is realized;
4. certain guarantee is provided for realizing remote recharging of meters accessed to an AMR system, and system operators do not need to worry about limit misrecharging.
Drawings
FIG. 1 is a flowchart illustrating a method for deducting token from credit in a prepaid system based on STS according to an embodiment;
FIG. 2 is a flowchart of the generated token code provided in the first embodiment;
FIG. 3 is a diagram of a management class token format as provided by one embodiment;
FIG. 4 is a flow chart of a decryption deduction token provided by one embodiment;
FIG. 5 is a diagram illustrating a format of an Amount field in a token according to an embodiment;
FIG. 6 is a schematic diagram of a replacement process provided in accordance with one embodiment;
FIG. 7 is a schematic diagram of a permuting process provided in accordance with an embodiment;
FIG. 8 is a schematic diagram of an encryption process provided in one embodiment;
fig. 9 is a schematic diagram of a decryption process provided in the first embodiment.
Detailed Description
The embodiments of the present invention are described below with reference to specific embodiments, and other advantages and effects of the present invention will be easily understood by those skilled in the art from the disclosure of the present specification. The invention is capable of other and different embodiments and of being practiced or of being carried out in various ways, and its several details are capable of modification in various respects, all without departing from the spirit and scope of the present invention. It is to be noted that the features in the following embodiments and examples may be combined with each other without conflict.
The invention aims to provide an operation method and system for deducting token based on quota in an STS (service standard specification) prepaid system aiming at the defects of the prior art.
Example one
The embodiment provides an operation method for deducting token based on credit in an STS prepaid system, as shown in fig. 1, including:
s1, calling a security module of an STS prepayment system according to requirements, generating a series of token codes with 20 digits, and issuing the generated token codes to a meter in a remote mode;
s2, the meter receives the issued token code, decrypts the received token code to obtain a plaintext, and calculates a deduction value; wherein the deduction value is generated based on a management class token of the STS prepaid system;
s3, automatically deducting the deduction value obtained by calculation from the current surplus amount by the meter to obtain the surplus amount after deduction;
and S4, judging whether the remaining amount is negative and exceeds the set credit amount, and if so, automatically tripping the meter.
The embodiment applies the characteristics of the management token, and provides an operation method for deducting token based on the limit of the STS prepaid system according to the bit string field composition, the field AMount calculation method and the encryption operation process of the bit string of the token in the STS standard.
In step S1, a security module of the STS prepaid system is called as required to generate a series of token codes of 20 digits, and the generated token codes are sent to a meter in a remote manner; as shown in fig. 2:
the STS standard promulgates three types of tokens according to different use functions, and in this embodiment, a class 2 management class token whose format is defined as shown in fig. 3 is used.
S11, acquiring a token of 66bits according to the diagram shown in FIG. 3, and dividing the bit string of the 66bits into two parts, namely a class of 2bits and a data block of 64 bits;
s12, encrypting the 64bits data block by a DKGA04 algorithm, wherein the encryption process is shown in FIG. 8;
and inverting the 64-bit key according to bits, circularly shifting the key by 12 bits to the right, carrying out nibble replacement according to a replacement table (the step needs to input a 64-bit plaintext data block), carrying out bit replacement according to a replacement table, circularly shifting the key by one bit to the left, and circularly replacing for 16 times to obtain a 64-bit ciphertext data block.
S13, replacing class of 2bits with bit27 and bit28 in a 64-bit data block, and combining to obtain a 66-bit data block, wherein the replacement process is shown in FIG. 6;
s14, converting the data block of 66bits into token of 20-bit number.
In step S2, the meter receives the token code issued, decrypts the received token code to obtain a plaintext, and calculates a deduction value; wherein the deduction value is generated based on a management class token of the STS prepaid system.
The token generated in step S1 is remotely issued or locally input to the electric energy meter for decryption, and the deduction value is taken out, which includes the specific steps shown in fig. 4:
s21, replacing the highest 2bits in the 66bits data block with bit27 and bit28, and extracting a token type of 2bits and a ciphertext data block of 64bits, wherein the replacement process is shown in FIG. 7;
s22, decrypting the 64bits ciphertext data block through a DKGA04 algorithm, wherein the decryption process is shown in FIG. 9;
and carrying out bit replacement on the 64-bit plaintext data block according to a replacement table, carrying out nibble replacement according to a replacement table (the step needs to input a 64-bit secret key), circulating for one bit to the left, and carrying out 16 times of circulating replacement operation to obtain the 64-bit plaintext data block.
S23, extracting a first deduction value Amount field value in a 64bits plaintext bit string;
s24, calculating a second deduction value Amount' according to the extracted field numerical value of the first deduction value Amount; the format is shown in FIG. 5, where a second deduction value Amount' is calculated as:
wherein t represents a deduction value; m represents a mantissa; n represents an integer of 1 to e; e represents an index of 10.
In step S3, the meter automatically deducts the deduction value from the current credit to obtain the credit remaining after deduction.
The meter automatically subtracts the value of Amount' calculated in step S3 from the current remaining credit to obtain a new remaining credit.
In step S4, it is determined whether the remaining credit is negative and exceeds the set credit, and if yes, the meter automatically trips.
If the current surplus limit is judged to exceed the maximum credit limit in the step S3, if the new surplus limit is negative and exceeds the set credit limit, the meter automatically trips, only after the user recharges next time, the meter can automatically switch on, otherwise, the user cannot normally use electricity; if not, the user can continue to use the power.
In this embodiment, step S4 is followed by:
s5, judging whether recharging information exists in recharging, and if yes, compensating the credit limit;
s6, judging whether the load switch needs to act, and if so, carrying out power-on operation; if not, no processing is carried out.
If the electric energy meter has credit limit, the credit limit is compensated firstly when recharging next time, and then whether the load switch needs to act or not is judged.
Compared with the prior art, the embodiment has the following beneficial effects:
1. the profit and the income of the property service provider for the shared fee are improved, and the property service personnel do not need to go to the home repeatedly for urging payment;
2. the uniform management and payment of the shared fees are realized only by the settlement of the power company and the property service provider;
3. the quantitative deduction of the residual amount of the meter is realized;
4. certain guarantee is provided for realizing remote recharging of meters accessed to an AMR system, and system operators do not need to worry about limit misrecharging.
Example two
The embodiment provides an operation system for deducting token based on credit in an STS prepaid system, which includes:
the generating module is used for calling a safety module of the STS prepayment system according to the requirement, generating a series of 20-digit token codes and sending the generated token codes to the meter in a remote mode;
the first decryption module is used for receiving the issued token code by the meter, decrypting the received token code to obtain a plaintext and calculating a deduction value; wherein the deduction value is generated based on a management class token of the STS prepaid system;
the deduction module is used for metering a deduction amount value obtained by deducting calculation from the current surplus amount automatically to obtain the surplus amount after deduction;
and the judging module is used for judging whether the remaining credit line is a negative number and exceeds the set credit line.
Further, the generating module specifically includes:
the acquisition module is used for acquiring a token of 66bits and dividing the bit string of the 66bits into a class of 2bits and a data block of 64 bits;
the encryption module is used for encrypting the 64bits data block through a DKGA04 algorithm;
the first replacement module is used for replacing class of 2bits with bit27 and bit28 in a 64-bit data block and combining the class and the bit27 and the bit28 to obtain a 66-bit data block;
and the conversion module is used for converting the 66bits data block into a token of 20-bit number.
Further, the first decryption module specifically includes:
the second replacement module is used for replacing 2bits in the 66bits data block with bit27 and bit28, and extracting a token type of 2bits and a ciphertext data block of 64 bits;
the second decryption module is used for decrypting the 64bits ciphertext data block through a DKGA04 algorithm;
the extraction module is used for extracting the first deduction amount value field numerical value in the 64bits plaintext bit string;
and the calculating module is used for calculating a second deduction value according to the extracted first deduction value field numerical value.
Further, the deduction value is calculated in the first decryption module and is expressed as:
wherein t represents a deduction value; m represents a mantissa; n represents an integer of 1 to e; e represents an index of 10.
It should be noted that the operation system for deducting token based on credit in the STS prepaid system provided in this embodiment is similar to the embodiment, and will not be described herein.
Compared with the prior art, the embodiment has the following beneficial effects:
1. the profit and the income of the property service provider for the shared fee are improved, and the property service personnel do not need to go to the home repeatedly for urging payment;
2. the uniform management and payment of the shared fees are realized only by the settlement of the power company and the property service provider;
3. the quantitative deduction of the residual amount of the meter is realized;
4. certain guarantee is provided for realizing remote recharging of meters accessed to an AMR system, and system operators do not need to worry about limit misrecharging.
It is to be noted that the foregoing is only illustrative of the preferred embodiments of the present invention and the technical principles employed. It will be understood by those skilled in the art that the present invention is not limited to the particular embodiments described herein, but is capable of various obvious changes, rearrangements and substitutions as will now become apparent to those skilled in the art without departing from the scope of the invention. Therefore, although the present invention has been described in greater detail by the above embodiments, the present invention is not limited to the above embodiments, and may include other equivalent embodiments without departing from the spirit of the present invention, and the scope of the present invention is determined by the scope of the appended claims.
Claims (10)
1. An operation method for deducting token based on credit in STS prepaid system is characterized by comprising:
s1, calling a security module of an STS prepayment system according to requirements, generating a series of token codes with 20 digits, and issuing the generated token codes to a meter in a remote mode;
s2, the meter receives the issued token code, decrypts the received token code to obtain a plaintext, and calculates a deduction value; wherein the deduction value is generated based on a management class token of the STS prepaid system;
s3, automatically deducting the deduction value obtained by calculation from the current surplus amount by the meter to obtain the surplus amount after deduction;
and S4, judging whether the remaining amount is negative and exceeds the set credit amount, and if so, automatically tripping the meter.
2. The method as claimed in claim 1, wherein the step S1 is specifically performed by the following steps:
s11, acquiring a token of 66bits, and dividing the bit string of the 66bits into a class of 2bits and a data block of 64 bits;
s12, encrypting a 64bits data block through a DKGA04 algorithm;
s13, replacing class of 2bits with bit27 and bit28 in a 64-bit data block, and combining to obtain a 66-bit data block;
s14, converting the data block of 66bits into token of 20-bit number.
3. The method as claimed in claim 2, wherein the step S2 is specifically performed by the following steps:
s21, replacing 2bits in the 66bits data block with bit27 and bit28, and extracting a token type of 2bits and a ciphertext data block of 64 bits;
s22, decrypting the 64bits ciphertext data block through a DKGA04 algorithm;
s23, extracting a first deduction amount value field numerical value in a 64bits plaintext bit string;
s24, calculating a second deduction value according to the extracted first deduction value field numerical value.
4. The method as claimed in claim 3, wherein the deduction value calculated in step S2 is expressed as:
wherein t represents a deduction value; m represents a mantissa; n represents an integer of 1 to e; e represents an index of 10.
5. The method as claimed in claim 1, wherein the step S4 is followed by the step of deducting the token based on the credit amount in the STS prepaid system:
s5, judging whether recharging information exists in recharging, and if yes, compensating the credit limit;
s6, judging whether the load switch needs to act, and if so, carrying out power-on operation; if not, no processing is carried out.
6. The method as claimed in claim 5, wherein in step S4, it is determined whether the remaining credit is negative, and if not, no processing is performed.
7. An operation system for deducting token based on credit in STS prepaid system, comprising:
the generating module is used for calling a safety module of the STS prepayment system according to the requirement, generating a series of 20-digit token codes and sending the generated token codes to the meter in a remote mode;
the first decryption module is used for receiving the issued token code by the meter, decrypting the received token code to obtain a plaintext and calculating a deduction value; wherein the deduction value is generated based on a management class token of the STS prepaid system;
the deduction module is used for metering a deduction amount value obtained by deducting calculation from the current surplus amount automatically to obtain the surplus amount after deduction;
and the judging module is used for judging whether the remaining credit line is a negative number and exceeds the set credit line.
8. The system of claim 7, wherein the generating module is specifically configured to:
the acquisition module is used for acquiring a token of 66bits and dividing the bit string of the 66bits into a class of 2bits and a data block of 64 bits;
the encryption module is used for encrypting the 64bits data block through a DKGA04 algorithm;
the first replacement module is used for replacing class of 2bits with bit27 and bit28 in a 64-bit data block and combining the class and the bit27 and the bit28 to obtain a 66-bit data block;
and the conversion module is used for converting the 66bits data block into a token of 20-bit number.
9. The system of claim 8, wherein the first decryption module is specifically configured to:
the second replacement module is used for replacing 2bits in the 66bits data block with bit27 and bit28, and extracting a token type of 2bits and a ciphertext data block of 64 bits;
the second decryption module is used for decrypting the 64bits ciphertext data block through a DKGA04 algorithm;
the extraction module is used for extracting the first deduction amount value field numerical value in the 64bits plaintext bit string;
and the calculating module is used for calculating a second deduction value according to the extracted first deduction value field numerical value.
10. The STS prepaid system based credit deduction token operating system as claimed in claim 9, wherein the first decryption module calculates the deduction value as:
wherein t represents a deduction value; m represents a mantissa; n represents an integer of 1 to e; e represents an index of 10.
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Application publication date: 20220118 |