CN103237027B - Method, device and system for transmitting data of bank POS (point of sale) machine - Google Patents
Method, device and system for transmitting data of bank POS (point of sale) machine Download PDFInfo
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- CN103237027B CN103237027B CN201310140990.4A CN201310140990A CN103237027B CN 103237027 B CN103237027 B CN 103237027B CN 201310140990 A CN201310140990 A CN 201310140990A CN 103237027 B CN103237027 B CN 103237027B
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Abstract
The invention relates to a method for transmitting data of a bank POS (point of sale) machine. The method comprises the following steps that after data collected by a first POS machine is sequentially encrypted and packed according to a first format, the first data is obtained, and in addition, the first data is sent to a first server; whether the code value of the specified position in the data message of the first data is the set value or not is judged, and if so, the next step is executed; otherwise, the first data is decrypted and is stored in the first server; and the first data is decrypted in the first server, and in addition, the data obtained after the decryption is sent to a second server. The invention also relates to a system for transmitting data of the bank POS machine. When being implemented, the method, a device and the system for transmitting the data of the bank POS machine have the following beneficial effects that the communication cost is lower, and the efficiency is higher.
Description
Technical field
The present invention relates to field of data transmission, more particularly, it relates to a kind of method of bank brushing card machine data transfer, dress
Put and system.
Background technology
Circulation with bank card is on the increase, and swipe the card POS（Point of sale, point-of-sale terminal）Cloth high-volume
It is on the increase, thus the data communication to the POS that swipes the card and management require more convenient and higher security control.Complete by 2012
The POS that ball lays has 1.5 hundred million, and China has 8,000,000, and the POS that swipes the card of China can increase to 50,000,000 in 5 years.
In order to realize laying more POS, except the strength of bank and Unionpay, also start societal forces, adopt the money of Third-party payment
Source, the POS that swipes the card installs in development trade company.While POS quantity increasingly increases, the data bandwidth of the data communication of POS and safety
And the problem of terminal management aspect also exposed day by day is out.
With social progress and development, traditional Unionpay's POS function cannot meet demand, consumer it is desirable that
Support the POS of traditional financial transaction and professional application.Thus, proprietary application data will necessarily be produced and Unionpay's data uses and divides
Problem from communication channel.On the one hand, exclusive data needs to be uploaded to private server, and on the other hand, the data of Unionpay then needs
It is uploaded to Unionpay's server.If POS is simultaneously using two passes for consumption, it will causes the waste of resource, leads to relatively costly；
Switch between the network that two passes are accessed, cause time-consuming longer, less efficient.
Content of the invention
The technical problem to be solved in the present invention is, for above-mentioned relatively costly, the less efficient defect of prior art,
A kind of method of bank brushing card machine data transfer that cost is relatively low, efficiency is higher, apparatus and system are provided.
The technical solution adopted for the present invention to solve the technical problems is：Construct a kind of side of bank brushing card machine data transfer
Method, comprises the steps：
A）The data of the first POS collection is encrypted according to the first form successively and after packing, obtains the first data,
And by described first data is activation to first server；
B）Whether the code value judging specified location in the data message of described first data is setting value, in this way, executes step
Rapid C）；Otherwise, by described first data deciphering and be saved in described first server；
C）Described first server is decrypted to described first data, and the data is activation obtaining after deciphering is arrived
Second server.
In the method for bank brushing card machine data transfer of the present invention, described first server is private server,
Described second server is Financial Transaction Service device.
In the method for bank brushing card machine data transfer of the present invention, described step C）Further include：
C1）Described first server is decrypted to described first data, and will after deciphering the data that obtains according to
Described first form is encrypted and obtains the second data, and by described second data is activation to the first forwarding POS；
C2）Described first is forwarded the second data is activation in POS to the second forwarding POS；
C3）Described second data is decrypted according to the second form and obtains the 3rd data, and described 3rd data is sent out
Deliver to described second server.
In the method for bank brushing card machine data transfer of the present invention, described first form is unsymmetrical key RSA
Algorithm and symmetric key 3DES algorithm, described second form is financial transaction standard.
The invention still further relates to a kind of device of the method realizing above-mentioned bank brushing card machine data transfer, including：
Data acquisition and sending module：For the data of the first POS collection is encrypted according to the first form successively
And obtain the first data after packing, and by described first data is activation to first server；
Code value judge module：Whether the code value for judging specified location in the data message of described first data is setting
Value, in this way, by described first data deciphering and be saved in described first server；
Data encrypting and deciphering and sending module：For being decrypted to described first data in described first server, and
By the data is activation obtaining after deciphering to second server.
In the device of the method realizing above-mentioned bank brushing card machine data transfer of the present invention, described first server
For private server, described second server is Financial Transaction Service device.
In the device of the method realizing above-mentioned bank brushing card machine data transfer of the present invention, described data encrypting and deciphering
And sending module further includes：
First data encrypting and deciphering and transmitting element：For solving to described first data in described first server
Close, and the data that obtains will be encrypted according to described first form and obtain the second data after deciphering, and by described second data
It is sent to the first forwarding POS；
Second data transmission unit：For described first being forwarded the second data is activation to the second forwarding POS in POS
Machine；
Second data deciphering and transmitting element：Obtain the 3rd for being decrypted described second data according to the second form
Data, and by described 3rd data is activation to described second server.
In the device of the method realizing above-mentioned bank brushing card machine data transfer of the present invention, described first form is
Unsymmetrical key RSA Algorithm and symmetric key 3DES algorithm, described second form is financial transaction standard.
The invention still further relates to a kind of bank brushing card machine data transmission system, including the first POS, private server, first
Forward POS, the second forwarding POS and Financial Transaction Service device；Described first POS gathered data and by it according to the first lattice
Formula is encrypted and is sent to after packing described private server, specifies in its data message that described private server will receive
Position be setting value data be encrypted according to the first form after be sent to described first forwarding POS, described first forwarding
The data is activation receiving is arrived the described second forwarding POS by POS, and described second forwards POS by the data of reception according to the
Two forms are sent to described Financial Transaction Service device after being decrypted；Described first form is unsymmetrical key RSA Algorithm and right
Claim key 3DES algorithm, described second form is financial transaction standard.
In bank brushing card machine data transmission system of the present invention, the access way of described first POS is wireless
GPRS or wireless apss N designated lane or ethernet lan, described private server forwards POS to pass through Ethernet with described first
Connect, described first forwarding POS adopts serial communication with described second forwarding POS, and described second forwards POS to pass through no
Line or wired APN designated lane are linked into financial transaction dedicated network.
Implement the method for bank brushing card machine data transfer, the apparatus and system of the present invention, have the advantages that:Due to
It is sent to first server after the data of the first POS end collection is encrypted according to the first form, then pass through according to datagram
The code value of specified location and then show that the data of collection is exclusive data or Unionpay's data in literary composition, exclusive data in this way, then will
Data after encryption is decrypted and is saved in first server, Unionpay's data in this way, then be sent to second service after deciphering
Device；So that the first POS can gather exclusive data, Unionpay's data can be gathered again, and make both data in single channel
In can transmit, save resource, and do not need to switch between the network that two passes are accessed, guaranteeing data pacify
Communication is reduced time-consuming, so its cost is relatively low, efficiency is higher on the premise of complete.
Brief description
Fig. 1 is the method for bank brushing card machine data transfer of the present invention, in apparatus and system embodiment method flow chart；
Fig. 2 is in first server, the first data to be decrypted in described embodiment and be sent to the second clothes after encrypting
The particular flow sheet of business device；
Fig. 3 is the structural representation of device in described embodiment；
Fig. 4 is the structural representation of system in described embodiment.
Specific embodiment
For the ease of those of ordinary skill in the art it will be appreciated that and implementing the present invention, below in conjunction with accompanying drawing to this
Bright embodiment is described further.
In the method, apparatus and system embodiment of bank brushing card machine data transfer of the present invention, its bank brushing card machine data
The flow chart of the method for transmission is as shown in Figure 1.In Fig. 1, the method includes：
The data that first POS gathers is encrypted according to the first form and obtains first after packing by step S01 successively
Data, and by the first data is activation to first server:In the present embodiment, the first POS is consumption POS, and the first POS is adopted
The data of collection can be exclusive data can also be Unionpay's data, in order to be able to exclusive data and Unionpay data field are separated, this reality
Apply in example, the code value of specified location in exclusive data message and the code value of specified location in Unionpay data message are arranged to different
Value, and the code value of specified location in Unionpay's data message is arranged to setting value it is worth mentioning at this point that, above-mentioned specified location is
A field in data message, in the present embodiment, this field is referred to as transaction code.Certainly, in other embodiments it is also possible to
The code value of specified location in exclusive data message is arranged to setting value.
In this step, the data of the first POS collection is encrypted according to the first form and after packing, obtains the first number
According to, and by the first data is activation to first server it is worth mentioning at this point that, above-mentioned first form be unsymmetrical key RSA Algorithm
With symmetric key 3DES algorithm, its cryptographic services provides by the client in the first POS and background server simultaneously, particularly as
When being that the data of the first POS collection is encrypted, use symmetric key 3DES algorithm, this symmetric key 3DES algorithm
Key be called working key, generated by background server, when the first POS is registered daily, background server can issue difference
Working key；And protect working key to issue then and realized by a pair asymmetric RSA key, this asymmetric RSA key is first
Generate when POS first powers on, during online activation, public key will be uploaded to background server, and private key is then saved in the first POS
In, it can only use and cannot read.It is noted that after the data that the first POS is gathered is encrypted according to the first form,
Packed again, be subsequently sent to first server.In the present embodiment, first server is private server, specifically, specially
It is hundreds of millions business's background servers with server, hundreds of millions business are " instant e-shop platforms ", can be immediately by the order of consumer
It is sent to the shops of businessman, order processing result can be replied to consumer by businessman in time, realize real-time, interactive, allow consumer
Shopping online on the spot in person is had to experience.
Step S02 judges whether the code value of specified location in the data message of the first data is setting value：In this step, sentence
In the data message of disconnected first data, whether the code value of specified location is setting value, namely judges whether the code value of transaction code is to set
Definite value, sets during this setting value in advance, and in the present embodiment, this setting value size is " 999999 ", certainly, setting value
Size and digit can be changed according to actual needs accordingly.In this step, if it is determined that result be yes, i.e. the first data
Data message in the code value of specified location be for setting value, then execution step S03；Otherwise, execution step S04.
Step S03：First server is decrypted to the first data, and will after deciphering the data is activation that obtains to the
Two servers：If the judged result of above-mentioned steps S02 is yes, execute this step.Namely the data message when the first data
The code value of middle specified location is during setting value it was demonstrated that the data of the first POS collection is Unionpay's data, then at this moment in first service
In device, the first data is decrypted, and by the data is activation obtaining after deciphering to second server.Namely adding in this step
Close employing is also unsymmetrical key RSA Algorithm and symmetric key 3DES algorithm.In the present embodiment, second server is that finance is handed over
Easily server.
Step S04 by the first data deciphering and is saved in first server：If the judged result of above-mentioned steps S02
It is no, then execute this step.Namely when the code value of specified location in the data message of the first data is not setting value it was demonstrated that
The data of one POS collection is exclusive data, then be at this moment decrypted the first data and preserve the data obtaining after deciphering
In first server.
In the present embodiment, the Unionpay's program operating in the first POS issues fortune on a POS Unionpay's data message
The encrypted tunnel service routine of row, cryptographic services are sent to private server data safety（Hundreds of millions business's background servers）,
Again Financial Transaction Service device is forwarded to by private server arrangement, such Unionpay program is no need for connecting gold using independent passage
Melt trading server, multiple Unionpay program can connect Unionpay using same private server, saved resource, reduced into
This.In the same manner, exclusive data also only need to issue encrypted tunnel service routine exclusive data message, you can carries out with private server
Communication.
For the present embodiment, above-mentioned steps S03 can also specifically refine further, the particular flow sheet after its refinement
As shown in Fig. 2 in Fig. 2, step S03 further includes：
Step S31 is decrypted to the first data in first server, and will after deciphering the data that obtains according to first
Form is encrypted and obtains the second data, and by the second data is activation to the first forwarding POS:In this step, in first service
First the first data is decrypted in device, then the data that obtain will adopt unsymmetrical key RSA Algorithm and symmetrical after deciphering
Key 3DES algorithm is encrypted and obtains the second data, then by the second data is activation to the first forwarding POS.It is worth mentioning
It is that, in the present embodiment, the first forwarding POS is responsible for data and the Financial Transaction Service device that transfer private server forwards
The data returning.
Step S32 forwards the second data is activation in POS to the second forwarding POS by first：In this step, by first
The second data in POS is forwarded to be sent directly to the second forwarding POS.It is noted that in the present embodiment, the second forwarding
POS is also responsible for data that transfer private server forwards and the data that Financial Transaction Service device returns.
Second data is decrypted according to the second form and obtains the 3rd data by step S33, and the 3rd data is activation is arrived
Second server：In this step, the second data is decrypted according to the second form obtain the 3rd data it is worth mentioning at this point that,
Above-mentioned second form be financial transaction standard, also will the second data be decrypted according to financial transaction standard obtain the 3rd number
According to, and by the 3rd data is activation to Financial Transaction Service device.
The present embodiment further relates to a kind of device of the method realizing above-mentioned bank brushing card machine data transfer, its structural representation
As shown in figure 3, in Fig. 3, this device includes data acquisition and sending module 1, code value judge module 2 data encryption and decryption and transmission
Module 3；Wherein, data acquisition and sending module 1 are used for carrying out adding according to the first form successively by the data of the first POS collection
The first data is obtained, and by the first data is activation to first server after close and packing；Code value judge module 2 is used for judgement first
In the data message of data, whether the code value of specified location is setting value, in this way, by the first data deciphering and be saved in the first clothes
In business device；Data encrypting and deciphering and sending module 3 are used in first server, the first data being decrypted, and will obtain after deciphering
The data is activation arriving is to second server.It is noted that in the present embodiment, first server is private server, second
Server is Financial Transaction Service device.
In the present embodiment, data encrypting and deciphering and sending module 3 further include the first data encrypting and deciphering and transmitting element 31,
Second data transmission unit 32 and the second data deciphering and transmitting element 33；First data encrypting and deciphering and transmitting element 31 are used for
In first server, the first data is decrypted, and the data that obtains will be encrypted according to the first form and obtain the after deciphering
Two data, and by the second data is activation to the first forwarding POS；Second data transmission unit 32 is used for forwarding POS by first
In the second data deliver to the second forwarding POS；Second data deciphering and transmitting element 33 are used for the second data according to second
Form is decrypted and obtains the 3rd data, and by the 3rd data is activation to second server.It is noted that above-mentioned first lattice
Formula is unsymmetrical key RSA Algorithm and symmetric key 3DES algorithm, and above-mentioned second form is financial transaction standard.
The present embodiment further relates to a kind of bank brushing card machine data transmission system, and its structural representation is as shown in Figure 4.In Fig. 4,
This system includes the first POS 01, private server 02, first forwards POS 03, second to forward POS 04 and financial transaction
Server 05；Wherein, the first POS 01 gathered data it is encrypted according to the first form and is sent to special after packing
Server 02, in its data message that private server 02 will receive, specific bit is set to the data of setting value and enters according to the first form
It is sent to the first forwarding POS 03, first forwards POS 03 by the data is activation receiving to the second forwarding POS after row encryption
04, the second forwarding POS 04 is sent to Financial Transaction Service device 05 be decrypted the data of reception according to the second form after；On
Stating the first form is unsymmetrical key RSA Algorithm and symmetric key 3DES algorithm, and the second form is financial transaction standard.
It is noted that in the present embodiment, the access way of the first POS 01 is wireless GPRS or wireless apss N are special
Passage or ethernet lan, private server 02 is connected by Ethernet with the first forwarding POS 03, first forward POS 03 and
Second forwarding POS 04 adopts serial communication, and the second forwarding POS 04 is linked into gold by wireless or limited APN designated lane
Melt transaction dedicated network.
In a word, in the present embodiment, communication link can be divided into three sections, respectively link one：First POS is to service-specific
Device（Hundreds of millions business's background servers）, using APN passage, encrypted by hundreds of millions business's platforms；Link two：Hundreds of millions business's background servers extremely turn
Send out POS（First forwards POS and the second forwarding POS）, using separate lines, encrypted by hundreds of millions business's platforms；Link three：Forward
POS to Financial Transaction Service device, using Unionpay's APN passage, according to Unionpay's Standard Encryption.
For link one, in the first POS, hundreds of millions business's application programs will be good to exclusive data or Unionpay's data acquisition, plus
Private server is transmitted after close（Hundreds of millions business's background servers）.The access way of the first POS is generally wireless GPRS
Or ethernet lan, its wireless access can also use APN dedicated network.On this link one, the data of transmission will also use hundred million
The AES of ten thousand business's system platforms is encrypted, and encipherment scheme employs and accesses three layers of increasingly complex key than Unionpay POS
System.Wherein, working key employs the encryption of unsymmetrical key RSA Algorithm and issues, and the data of actual acquisition employs symmetrically close
Key 3DES algorithm for encryption.Simultaneously as link one is APN designated lane in itself, further ensure that exclusive data with
The safety of Unionpay's data.
For link two, in hundreds of millions business's background servers, exclusive data will be saved, and the then encrypted transmission of Unionpay's data
To forwarding POS, then sent to Financial Transaction Service device by forwarding POS.Forward POS and hundreds of millions business's background servers connection be with
Too net connects, the data of transmission on this link two, and the AES equally employing hundreds of millions business's system platforms is encrypted, its
The algorithm of encryption is unsymmetrical key RSA Algorithm and symmetric key 3DES algorithm.
For link three, POS is forwarded to be divided into two, respectively first forwards POS and the second forwarding POS, first turn
Send out POS and connect hundreds of millions business's background servers, for monitored data request, access way is Ethernet；Second forwards POS even
Connect financial transaction dedicated network, for Unionpay's interaction data, access way be wireless GPRS.First forwarding POS and second
Forward and between POS, then adopt serial communication, equally, serial communication is also through hundreds of millions business's system platform encryptions.Forward POS
Data that responsible transfer hundreds of millions business backstage forwards and the data that Financial Transaction Service device returns, the wireless network of access is
The APN private network of Unionpay, DEA is ensured by Unionpay according to financial transaction standard implementation, security performance.Simultaneously because turning
Send out POS to be placed in machine room so that Unionpay's data is more difficult to be ravesdropping distorts.
Exclusive data and Unionpay data are gathered by the first POS simultaneously, using high strength encrypting and upload to service-specific
Then Unionpay's data is forwarded to Financial Transaction Service device by device again, and the first POS need not reduce in two APN network switchings
Communication is time-consuming；While completing double-channel data interaction, save 50% resource, improve data transfer and safety management
The efficiency of aspect.Because hundreds of millions business's platforms employ the AES of higher level, make data safer；Additionally, accessing hundred million
Any POS of ten thousand business's platforms, all can use above-mentioned forwarding capability, so its autgmentability is stronger.
Embodiment described above only have expressed the several embodiments of the present invention, and its description is more concrete and detailed, but simultaneously
Therefore the restriction to the scope of the claims of the present invention can not be interpreted as.It should be pointed out that for those of ordinary skill in the art
For, without departing from the inventive concept of the premise, some deformation can also be made and improve, these broadly fall into the guarantor of the present invention
Shield scope.Therefore, the protection domain of patent of the present invention should be defined by claims.
Claims (8)
1. a kind of method of bank brushing card machine data transfer is it is characterised in that comprise the steps：
A）The data of the first POS collection is encrypted according to the first form successively and after packing, obtains the first data, and will
Described first data is activation is to first server；
B）Whether the code value judging specified location in the data message of described first data is setting value, in this way, execution step C）；
Otherwise, by described first data deciphering and be saved in described first server；
C）Described first server is decrypted to described first data, and will after deciphering the data is activation that obtains to second
Server.
2. the method for bank brushing card machine data transfer according to claim 1 is it is characterised in that described first server is
Private server, described second server is Financial Transaction Service device.
3. the method for bank brushing card machine data transfer according to claim 1 and 2 is it is characterised in that described step C）Enter
One step includes：
C1）Described first server is decrypted to described first data, and by the data obtaining after deciphering according to described
First form is encrypted and obtains the second data, and by described second data is activation to the first forwarding POS；
C2）Described first is forwarded the second data is activation in POS to the second forwarding POS；
C3）Described second data is decrypted according to the second form and obtains the 3rd data, and described 3rd data is activation is arrived
Described second server.
4. a kind of device of the method for realizing bank brushing card machine data transfer as claimed in claim 1 it is characterised in that
Including：
Data acquisition and sending module：For the data of the first POS collection being encrypted according to the first form successively and beating
The first data is obtained after bag, and by described first data is activation to first server；
Code value judge module：Whether the code value for judging specified location in the data message of described first data is setting value,
In this way, by described first data deciphering and be saved in described first server；
Data encrypting and deciphering and sending module：For being decrypted to described first data in described first server, and will solve
The data is activation obtaining after close is to second server.
5. the device of the method for bank brushing card machine data transfer according to claim 4 is it is characterised in that described first takes
Business device is private server, and described second server is Financial Transaction Service device.
6. the device of the method for bank brushing card machine data transfer according to claim 4 or 5 is it is characterised in that described number
Further include according to encryption and decryption and sending module：
First data encrypting and deciphering and transmitting element：For being decrypted to described first data in described first server, and
The data obtaining after deciphering is encrypted according to described first form and obtains the second data, and described second data is activation is arrived
First forwarding POS；
Second data transmission unit：For described first being forwarded the second data is activation in POS to the second forwarding POS；
Second data deciphering and transmitting element：Obtain the 3rd number for being decrypted described second data according to the second form
According to, and by described 3rd data is activation to described second server.
7. a kind of bank brushing card machine data transmission system is it is characterised in that include the first POS, private server, the first forwarding
POS, the second forwarding POS and Financial Transaction Service device；It is simultaneously entered by described first POS gathered data according to the first form
It is sent to described private server, specified location in its data message that described private server will receive after row encryption and packing
For setting value data be encrypted according to the first form after be sent to described first forwarding POS, described private server will
In its data message receiving, specific bit is set to the data deciphering of non-setting value and is saved in this private server, described first
Forward POS by the data is activation receiving to the described second forwarding POS, the data of reception is pressed by described second forwarding POS
It is sent to described Financial Transaction Service device according to the second form after being decrypted.
8. bank brushing card machine data transmission system according to claim 7 is it is characterised in that the connecing of described first POS
Entering mode is wireless GPRS or wireless apss N designated lane or ethernet lan, and described private server forwards POS with described first
Machine is connected by Ethernet, and described first forwarding POS adopts serial communication with described second forwarding POS, described second turn
Send out POS and financial transaction dedicated network is linked into by wirelessly or non-wirelessly APN designated lane.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201310140990.4A CN103237027B (en) | 2013-04-22 | 2013-04-22 | Method, device and system for transmitting data of bank POS (point of sale) machine |
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| CN201310140990.4A CN103237027B (en) | 2013-04-22 | 2013-04-22 | Method, device and system for transmitting data of bank POS (point of sale) machine |
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| CN103237027B true CN103237027B (en) | 2017-02-15 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106651361A (en) * | 2016-12-20 | 2017-05-10 | 张涉应 | Internet terminal for financial IC (Integrated Circuit) card and transaction method thereof |
| CN107221111B (en) * | 2017-05-26 | 2018-07-13 | 深圳飞人网络信息技术有限公司 | Near field wireless POS devices, near field method of mobile payment and system |
| CN107562820A (en) * | 2017-08-17 | 2018-01-09 | 信雅达系统工程股份有限公司 | The acquisition method and system of a kind of collage-credit data |
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| WO2011144118A2 (en) * | 2011-05-28 | 2011-11-24 | 华为技术有限公司 | Method and apparatus for performing bankcard businesses |
| CN102354418A (en) * | 2011-10-09 | 2012-02-15 | 钱袋网（北京）信息技术有限公司 | System for processing trade information and method therefor |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN1987925A (en) * | 2006-12-29 | 2007-06-27 | 中国建设银行股份有限公司 | Complex front platform of financial system and transfering method transaction data |
| US9460440B2 (en) * | 2008-02-21 | 2016-10-04 | The Coca-Cola Company | Systems and methods for providing electronic transaction auditing and accountability |
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|---|---|---|---|---|
| CN1649330A (en) * | 2005-03-18 | 2005-08-03 | 中国工商银行 | Radio network data communication interface and method for bank |
| WO2011144118A2 (en) * | 2011-05-28 | 2011-11-24 | 华为技术有限公司 | Method and apparatus for performing bankcard businesses |
| CN102354418A (en) * | 2011-10-09 | 2012-02-15 | 钱袋网（北京）信息技术有限公司 | System for processing trade information and method therefor |
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