CN112822301A - Smart card reading and writing method and system based on HTTP (hyper text transport protocol) - Google Patents

Smart card reading and writing method and system based on HTTP (hyper text transport protocol) Download PDF

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CN112822301A
CN112822301A CN202110419360.5A CN202110419360A CN112822301A CN 112822301 A CN112822301 A CN 112822301A CN 202110419360 A CN202110419360 A CN 202110419360A CN 112822301 A CN112822301 A CN 112822301A
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data
smart card
http
communication channel
writing
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CN112822301B (en
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胡洪祥
李儒兵
萧阳
宋学彬
张�荣
蒲以富
曹杨
徐亮
汤云伟
王海
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Chengdu Tongfei Technology Co ltd
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    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L67/00Network arrangements or protocols for supporting network services or applications
    • H04L67/01Protocols
    • H04L67/02Protocols based on web technology, e.g. hypertext transfer protocol [HTTP]
    • GPHYSICS
    • G06COMPUTING; CALCULATING OR COUNTING
    • G06KGRAPHICAL DATA READING; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
    • G06K17/00Methods or arrangements for effecting co-operative working between equipments covered by two or more of main groups G06K1/00 - G06K15/00, e.g. automatic card files incorporating conveying and reading operations
    • G06K17/0022Methods or arrangements for effecting co-operative working between equipments covered by two or more of main groups G06K1/00 - G06K15/00, e.g. automatic card files incorporating conveying and reading operations arrangements or provisions for transferring data to distant stations, e.g. from a sensing device
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L67/00Network arrangements or protocols for supporting network services or applications
    • H04L67/01Protocols
    • H04L67/133Protocols for remote procedure calls [RPC]
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L67/00Network arrangements or protocols for supporting network services or applications
    • H04L67/50Network services
    • H04L67/56Provisioning of proxy services
    • H04L67/565Conversion or adaptation of application format or content
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L69/00Network arrangements, protocols or services independent of the application payload and not provided for in the other groups of this subclass
    • H04L69/16Implementation or adaptation of Internet protocol [IP], of transmission control protocol [TCP] or of user datagram protocol [UDP]
    • H04L69/161Implementation details of TCP/IP or UDP/IP stack architecture; Specification of modified or new header fields
    • H04L69/162Implementation details of TCP/IP or UDP/IP stack architecture; Specification of modified or new header fields involving adaptations of sockets based mechanisms
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L69/00Network arrangements, protocols or services independent of the application payload and not provided for in the other groups of this subclass
    • H04L69/22Parsing or analysis of headers

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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Computer Security & Cryptography (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Theoretical Computer Science (AREA)
  • Information Transfer Between Computers (AREA)

Abstract

The invention discloses a smart card reading and writing method and a smart card reading and writing system based on an HTTP (hyper text transport protocol). A first data transmitted through a communication channel of the HTTP is acquired in an asynchronous mode; obtaining a first plaintext by adopting a data stream conversion mode or a decoding mode; performing depth analysis on the first plaintext by adopting a binary tree traversal method to obtain a first instruction and a first parameter; matching the corresponding calling smart card reader-writer interface, and performing read-write operation on the smart card to obtain second data; setting a cross-domain authority for a response head of a communication channel of an HTTP protocol, and transmitting obtained third data back to the WEB webpage client through the HTTP channel; the method has the advantages that the method is compatible with all mainstream browsers, the browsers do not need to be provided with plug-ins, and the problems of browser jamming, breakdown or other problems caused by the plug-ins can be avoided; the development mode is unified, the development difficulty is lower, and compatibility is good, and stability is good, and installation and deployment are convenient, and maintainability is strong.

Description

Smart card reading and writing method and system based on HTTP (hyper text transport protocol)
Technical Field
The invention relates to the technical field of internet, in particular to a smart card reading and writing method and a smart card reading and writing system based on an HTTP (hyper text transport protocol).
Background
When some industry management software such as natural gas, tap water, hospital medical treatment, property management and the like is developed, operations such as card reading, card writing, card clearing and the like are often required to be performed on intelligent cards such as magnetic cards, ID cards, IC cards, radio frequency cards, CPU cards and the like in a software system so as to read user information, write user purchase information and the like through the intelligent cards. To read and write smart cards such as magnetic cards, ID cards, IC cards, radio frequency cards, and CPU cards, it is necessary to operate and control a smart card reader/writer device to perform operations such as reading and writing of the smart cards.
At present, on a mainstream B/S architecture, the operation control of the smart card reader-writer can be realized only by adopting a mode based on a COM/OCX plug-in. However, the disadvantage of this method is also obvious, namely COM/OCX plug-in based technology, which is a plug-in technology developed by microsoft in the late 90 s of the 20 th century, and at present, only Internet Explorer browser supports the plug-in technology. Other browsers such as Google Chrome, Firefox, Opera and the like are not exceptional, and all do not support COM/OCX plug-in technology. This has resulted in such industry management software involving the B/S architecture for smart card reader/writer operational control, using only the Internet Explorer browser. With the disappearance of the Internet Explorer browser, the market share of the Internet Explorer browser is smaller and smaller, and great inconvenience is brought to users when the users of the industry are limited to use the Internet Explorer browser. Meanwhile, after the COM/OCX plug-in is adopted, instability is brought to the Internet Explorer browser, and the Internet Explorer browser is often jammed or crashed.
Disclosure of Invention
The invention aims to provide a smart card reading and writing method and a smart card reading and writing system based on an HTTP protocol.
The invention is realized by the following technical scheme:
a smart card read-write method based on HTTP protocol includes steps:
s1: creating a communication channel based on an HTTP protocol;
s2: acquiring first data transmitted through a communication channel of an HTTP protocol in an asynchronous mode, wherein the first data is request data sent by a WEB webpage client;
s3: performing data analysis on the first data by adopting a data stream conversion mode or a decoding mode to obtain a first plaintext;
s4: based on the data format of the first data, performing depth analysis on the first plaintext by adopting a binary tree traversal method to obtain a first instruction and a first parameter;
s5: calling a corresponding smart card reader-writer interface in a matching way through a first instruction, inputting the first parameter into the calling interface, and performing read-write operation on the smart card to obtain second data, wherein the second data is the end data of reading and writing the smart card;
s6: and setting cross-domain authority for a response head of a communication channel of an HTTP protocol, processing the second data to obtain third data, and transmitting the third data to a WEB webpage client through the HTTP communication channel.
At present, on a mainstream B/S architecture, the operation control of the smart card reader-writer can be realized only by adopting a mode based on a COM/OCX plug-in. However, with this plug-in technology, only the Internet Explorer browser supports this plug-in technology at present. Other browsers such as Google Chrome, Firefox, Opera and the like are not exceptional, and all do not support COM/OCX plug-in technology. The invention provides an intelligent card read-write method based on an HTTP (hyper text transport protocol), which is characterized in that a SOCKET Server based on the HTTP is established, first data sent by a WEB webpage client is intercepted and received for processing and analysis, the data instruction can be processed and analyzed according to the instruction requirement of the WEB webpage client, an intelligent card reader-writer interface is called to complete read-write operation, and an operation result is returned to the WEB webpage client under the condition that a plug-in is not needed and various different browsers are compatible.
Preferably, in step S3, the data stream conversion method specifically includes:
creating a data stream object;
reading the second data based on the data stream object to obtain character string data;
and taking out the character string in the character string data in an encoding mode to obtain a first plaintext.
Preferably, in step S3, the decoding method specifically includes:
reading the first data by adopting a 1024-byte data method to obtain a plurality of second byte data;
encoding the read second data to obtain encoded data;
and converting the coded data into a plaintext character string through a communication channel of an HTTP protocol to obtain a first plaintext.
Preferably, the first instruction is a reading instruction, a writing instruction or a card clearing instruction;
preferably, the calling interface is a calling interface of the smart card at the hardware bottom layer, and comprises a DLL interface and a Com/Ocx interface;
preferably, in step S6, the specific operation of performing data processing on the second data is: and converting the second data into second byte data by adopting an encoding method, and writing the second byte data by adopting a writing method of an output stream.
Preferably, in step S6, the specific operation of performing data processing on the second data is: and writing the second data by a writing method of the output stream.
The invention also discloses an intelligent card read-write system based on the HTTP protocol, which comprises:
the service management module is used for creating a communication channel based on an HTTP protocol;
the communication management module is used for acquiring first data transmitted through a communication channel of an HTTP protocol in an asynchronous mode, wherein the first data is request data sent by a WEB webpage client;
the first data processing module is used for carrying out data analysis on the first data in a data stream conversion mode or a decoding mode to obtain a first plaintext;
the second data processing module is used for carrying out depth analysis on the first plaintext by adopting a binary tree traversal method based on the data format of the first data to obtain a first instruction and a first parameter;
the intelligent card read-write interface module is used for calling a corresponding intelligent card reader-writer interface through first instruction matching based on a first instruction and a first parameter, inputting the first parameter into the calling interface, and performing read-write operation on the intelligent card to obtain second data, wherein the second data is end data of reading and writing the intelligent card;
a data transmission processing module for setting cross-domain authority for the response head of the communication channel of the HTTP protocol, processing the second data to obtain third data, and transmitting the third data to the WEB page client through the HTTP communication channel
Preferably, the data transmission processing module comprises an authority control module and a log recording and management module,
the authority control module is used for opening the cross-domain authority of a response head of a communication channel of the HTTP protocol;
the log recording and management module is used for processing the second data to obtain third data and transmitting the obtained third data to the WEB page client through an HTTP communication channel
Compared with the prior art, the invention has the following advantages and beneficial effects:
1. by adopting the smart card reading and writing method and system based on the HTTP provided by the invention, the smart card is compatible with mainstream browsers including Internet Explorer, Google Chrome, Firefox, Opera and the like, and good application experience is provided for users;
2. by adopting the method and the system for reading and writing the smart card based on the HTTP, the browser does not need to install a plug-in, the browser cannot be jammed or crashed due to the plug-in, and the safety problem of the browser due to the plug-in cannot occur;
3. by adopting the intelligent card reading and writing method and system based on the HTTP provided by the invention, the operation control of various intelligent card readers-writers is supported, such as the operations of reading, writing, clearing and the like of the intelligent card readers-writers such as a magnetic card, an ID card, an IC card, a radio frequency card, a CPU card and the like;
4. by adopting the intelligent card reading and writing method and system based on the HTTP provided by the invention, the Web webpage client has the advantages of uniform mode, lower development difficulty and smaller development workload on the development of the intelligent card reading and writing application;
5. by adopting the intelligent card reading and writing method based on the HTTP protocol, plug-ins do not need to be installed again in an operating system, the installation and the deployment are convenient, the maintainability is strong, and the maintenance threshold is lower.
Drawings
The accompanying drawings, which are included to provide a further understanding of the embodiments of the invention and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the invention and together with the description serve to explain the principles of the invention. In the drawings:
FIG. 1 is a schematic view of the structure of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail below with reference to examples and accompanying drawings, and the exemplary embodiments and descriptions thereof are only used for explaining the present invention and are not meant to limit the present invention.
Example one
The embodiment discloses a smart card reading and writing method based on an HTTP protocol, as shown in FIG. 1, the smart card reading and writing method in the embodiment is mainly a method implemented in a browser webpage, and the reading and writing method comprises the following steps:
s1: creating a communication channel based on an HTTP protocol;
and adopting a development mode of windows desktop software to create a Socket Server end program based on an HTTP protocol.
S2: acquiring first data transmitted by a Socket Server end through a communication channel of an HTTP protocol in an asynchronous mode, wherein the first data is request data sent by a WEB webpage client;
the method comprises the steps that a first request instruction is triggered at a WEB webpage client, the first request instruction is transmitted in a communication channel in a data packet mode, the instruction triggered by the WEB webpage client can be an independent instruction requirement and can also be transmitted by a plurality of instruction requirements at the same time, when the plurality of instructions are required to be transmitted, each instruction is separated independently by adopting an asynchronous method, the instructions are transmitted in a mode of separating front and back, and the Socket Server transmits instruction data by adopting the communication channel constructed by an HTTP protocol.
When receiving instruction data, the asynchronous data acquisition method needs to be started when receiving the instruction data, meanwhile, a corresponding asynchronous data acquisition ending method needs to be established, and only the acquired data after the ending method is complete required data.
S3: performing data analysis on the first data by adopting a data stream conversion mode or a decoding mode to obtain a first plaintext;
in step S3, the data stream conversion method specifically includes:
creating a data stream object, binding an output stream in created data when creating the data stream, and setting a coding method corresponding to each other;
reading the second data based on the data stream object to obtain character string data, and extracting the character string data of the second data in the data stream object in a coding mode, wherein the extracted character string data are data required to be used by people;
and extracting the character strings in the character string data in an encoding mode to obtain first plain texts, wherein the obtained first plain texts are extracted series of character string data.
The decoding method specifically comprises the following steps:
reading the first data by adopting a 1024-byte data method to obtain a plurality of second-byte data, dividing the first data into a plurality of second-byte data according to 1024-byte data as paragraphs;
encoding the read second data to obtain encoded data, wherein all the read second byte data are encoded;
converting the coded data acquired by a communication channel of an HTTP protocol in a Socket Server end into a plaintext character string to acquire a first plaintext;
s4: based on the data format of the first data, performing depth analysis on the first plaintext by adopting a binary tree traversal method to obtain a first instruction and a first parameter; the first instruction is a reading instruction, a writing instruction or a card clearing instruction;
the obtained first instruction is an instruction input or triggered by a user on a WEB webpage client, the instruction needing corresponding operation can be intuitively obtained inside after various data analysis and conversion, and the first parameter is a parameter which is matched with the first instruction and can realize the first instruction;
the data analysis method mainly comprises the steps of selecting a corresponding analysis mode to analyze according to the format of first data transmitted from a WEB webpage client, and if the format is QueryString format, analyzing the first plaintext by the QueryString analysis method; if the JSON format is adopted, the parsing method needs to be changed into the parsing method of the JSON format to parse the first plaintext.
S5: matching and calling a corresponding smart card reader-writer interface, inputting the first parameter into the calling interface, and performing read-write operation on the smart card to obtain second data, wherein the second data is the end data of reading and writing the smart card;
and analyzing the QueryString to obtain the operation instruction and the operation parameter, and performing binary tree traversal analysis on the data. For a complex data structure, operating instructions and operating parameters of each level in the data can be analyzed through a binary tree algorithm, layer by layer traversal and layer by layer progression;
the calling interface is a calling interface of the smart card on the hardware bottom layer and comprises a DLL interface and a COM/OCX interface; different manufacturers and different types of cards have different interfaces of the cards to be butted, and the interface and the parameters need to be adjusted according to the interface use instruction corresponding to the reader-writer by using the interface of which method needs to be used.
In the acquired first data, matching the corresponding operation steps according to the analyzed first instruction and the first parameter, calling the corresponding DLL interface and the COM/OCX interface according to the value of the operation instruction, and correspondingly transmitting the corresponding first parameter.
S6: and setting a cross-domain authority for a response head of a communication channel of an HTTP protocol in a Socket Server, processing the second data to obtain third data, and transmitting the third data to a WEB webpage client through an HTTP channel.
In the process of transmitting data, because HTTP limits network security, data cross-domain transmission is not allowed by default, a permission to allow cross-domain transmission needs to be set, so that third data can be transmitted back to the WEB page client through cross-domain transmission.
In step S6, the second data is processed by two different methods, which are:
in step S6, the specific operation of performing data processing on the second data is: and converting the second data into second byte data by adopting an encoding method, and writing the second byte data by adopting a writing method of an output stream object.
Reading source data needing to be returned to a WEB page client through an encoding mode of UTF8, converting the source data into a BYTE type array, namely second BYTE data, setting a returned and output encoding format to be UTF8, acquiring the length of the source data, sequentially writing the second BYTE data of the source data from 0 to the data length into an output object, submitting the data to the object, and finally closing the output object.
In step S6, the specific operation of performing data processing on the second data is: binding the output stream by the StreamWriter object, and writing the second data by the writing method of the data stream object.
Firstly, creating a streamWriter object, setting the object to be bound to an output stream, setting the object to be in a UTF8 encoding format, writing source data needing to be returned to a WEB webpage client into the object, submitting the data through a submitting method of the streamWriter object, and finally closing the streamWriter object.
Example two
The embodiment discloses a smart card read-write system based on an HTTP protocol, and the read-write system is used for implementing the smart card read-write method based on the HTTP protocol in the first embodiment, as shown in fig. 2, the read-write system includes:
the service management module is used for creating a communication channel based on an HTTP protocol;
the communication management module is used for acquiring first data transmitted through a communication channel of an HTTP protocol in an asynchronous mode, wherein the first data is request data sent by a WEB webpage client;
the first data processing module is used for carrying out data analysis on the first data in a data stream conversion mode or a decoding mode to obtain a first plaintext;
the second data processing module is used for carrying out depth analysis on the first plaintext by adopting a binary tree traversal method based on the data format of the first data to obtain a first instruction and a first parameter;
the intelligent card read-write interface module is used for calling a corresponding intelligent card reader-writer interface through first instruction matching based on a first instruction and a first parameter, inputting the first parameter into the calling interface, and performing read-write operation on the intelligent card to obtain second data, wherein the second data is end data of reading and writing the intelligent card;
and the data transmission processing module is used for setting cross-domain authority for a response head of a communication channel of the HTTP protocol, processing the second data to obtain third data, and transmitting the third data to the WEB webpage client through the HTTP communication channel.
The data transmission processing module comprises an authority control module and a log recording and managing module,
the authority control module is used for opening the cross-domain authority of a response head of a communication channel of the HTTP protocol;
and the log recording and management module is used for processing the second data to obtain third data and transmitting the obtained third data to the WEB page client through an HTTP communication channel.
The above-mentioned embodiments are intended to illustrate the objects, technical solutions and advantages of the present invention in further detail, and it should be understood that the above-mentioned embodiments are merely exemplary embodiments of the present invention, and are not intended to limit the scope of the present invention, and any modifications, equivalent substitutions, improvements and the like made within the spirit and principle of the present invention should be included in the scope of the present invention.

Claims (9)

1. A smart card read-write method based on HTTP protocol is characterized in that the read-write method comprises the following steps:
s1: creating a communication channel based on an HTTP protocol;
s2: acquiring first data transmitted through a communication channel of an HTTP protocol in an asynchronous mode, wherein the first data is request data sent by a WEB webpage client;
s3: performing data analysis on the first data by adopting a data stream conversion mode or a decoding mode to obtain a first plaintext;
s4: based on the data format of the first data, performing depth analysis on the first plaintext by adopting a binary tree traversal method to obtain a first instruction and a first parameter;
s5: calling a corresponding smart card reader-writer interface in a matching way through a first instruction, inputting the first parameter into the calling interface, and performing read-write operation on the smart card to obtain second data, wherein the second data is the end data of reading and writing the smart card;
s6: and setting cross-domain authority for a response head of a communication channel of an HTTP protocol, processing the second data to obtain third data, and transmitting the third data to a WEB page client through the HTTP communication channel.
2. The smart card reading and writing method based on the HTTP protocol according to claim 1, wherein in the step S3, a data stream conversion manner is specifically adopted:
creating a data stream object;
reading the second data based on the data stream object to obtain character string data;
and taking out the character string in the character string data in an encoding mode to obtain a first plaintext.
3. The smart card reading and writing method based on the HTTP protocol according to claim 1, wherein in the step S3, the decoding method specifically includes:
reading the first data by adopting a 1024-byte data method to obtain a plurality of second byte data;
encoding the read second data to obtain encoded data;
and converting the coded data into a plaintext character string through a communication channel of an HTTP protocol to obtain a first plaintext.
4. The smart card reading and writing method based on the HTTP protocol according to any one of claims 1 to 3, wherein the first command is a reading command, a writing command or a card clearing command.
5. The smart card reading and writing method based on the HTTP protocol according to any one of claims 1 to 3, wherein the calling interface is a calling interface of the smart card on a hardware bottom layer, and comprises a DLL interface and a COM/OCX interface.
6. The method according to claim 4, wherein in step S6, the specific operation of processing the second data is: and converting the second data into second byte data by adopting an encoding method, and writing the second byte data by adopting a writing method of an output stream.
7. The method according to claim 5, wherein in step S6, the specific operation of processing the second data is: and writing the second data by a writing method of an output stream.
8. A smart card read-write system based on HTTP protocol is characterized in that the read-write system comprises:
the service management module is used for creating a communication channel based on an HTTP protocol;
the communication management module is used for acquiring first data transmitted through a communication channel of an HTTP protocol in an asynchronous mode, wherein the first data is request data sent by a WEB webpage client;
the first data processing module is used for carrying out data analysis on the first data in a data stream conversion mode or a decoding mode to obtain a first plaintext;
the second data processing module is used for carrying out depth analysis on the first plaintext by adopting a binary tree traversal method based on the data format of the first data to obtain a first instruction and a first parameter;
the intelligent card read-write interface module is used for calling a corresponding intelligent card reader-writer interface through first instruction matching based on a first instruction and a first parameter, inputting the first parameter into the calling interface, and performing read-write operation on the intelligent card to obtain second data, wherein the second data is end data of reading and writing the intelligent card;
and the data transmission processing module is used for setting cross-domain authority for a response head of a communication channel of the HTTP protocol, processing the second data to obtain third data, and transmitting the third data to the WEB webpage client through the HTTP communication channel.
9. The HTTP-based smart card reading and writing system of claim 8, wherein the data transmission processing module comprises an authority control module and a log recording and management module,
the authority control module is used for opening the cross-domain authority of a response head of a communication channel of the HTTP protocol;
and the log recording and management module is used for processing the second data to obtain third data and transmitting the obtained third data to the WEB page client through an HTTP communication channel.
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