CN103024736A - Communication connecting method and device - Google Patents
Communication connecting method and device Download PDFInfo
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- CN103024736A CN103024736A CN2011102990445A CN201110299044A CN103024736A CN 103024736 A CN103024736 A CN 103024736A CN 2011102990445 A CN2011102990445 A CN 2011102990445A CN 201110299044 A CN201110299044 A CN 201110299044A CN 103024736 A CN103024736 A CN 103024736A
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- G06K—GRAPHICAL DATA READING; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
- G06K7/00—Methods or arrangements for sensing record carriers, e.g. for reading patterns
- G06K7/10—Methods or arrangements for sensing record carriers, e.g. for reading patterns by electromagnetic radiation, e.g. optical sensing; by corpuscular radiation
- G06K7/10009—Methods or arrangements for sensing record carriers, e.g. for reading patterns by electromagnetic radiation, e.g. optical sensing; by corpuscular radiation sensing by radiation using wavelengths larger than 0.1 mm, e.g. radio-waves or microwaves
- G06K7/10257—Methods or arrangements for sensing record carriers, e.g. for reading patterns by electromagnetic radiation, e.g. optical sensing; by corpuscular radiation sensing by radiation using wavelengths larger than 0.1 mm, e.g. radio-waves or microwaves arrangements for protecting the interrogation against piracy attacks
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Abstract
The invention relates to a communication connecting method and a communication connecting device, wherein the communication connecting method comprises the steps of: setting a first time limit; transmitting a connecting request message through a magnetic channel; judging whether a response message of the connecting request message is received through a radio frequency channel within the first time limit, and determining whether a radio communication connection is built according to the judgment result. The communication connecting device comprises a first setting module, a first transmission module, a first judgment module and a first processing module; the first setting module is used for setting the first time limit; the first transmission module is used for transmitting the connecting request message through the magnetic channel; the first judgment module is used for judging that whether the response message of the connecting request message is received through the radio channel within the first time limit; and the first processing module is used for determining that whether the radio communication connection is built or not according to the judgment result of the first judgment module. According to the communication connecting method and the communication connecting device disclosed by the invention, the interaction time of an instruction is restricted by setting the time limit; and the chance of successful attack of an attacker is reduced, so as to improve the security of data transmission.
Description
Technical field
The present invention relates to wireless communication field, relate in particular to a kind of communication connecting method and device.
Background technology
Along with popularizing of portable terminal, it is very urgent that the demand of utilizing portable terminal to pay by mails becomes.At present, the technology of utilizing portable terminal to pay by mails has multiple implementation, and wherein a kind of scheme is to be that radio-frequency communication module, magnetic coupling coil and the magnetic induction processing module of 2.4GHz realizes by integrated working frequency points in the SIM card of mobile phone or SD card.This scheme detects the intensity of magnetic coupling signal and receives the magnetic channel information by being contained in SIM card in the mobile phone or SD card, and the 2.4GHz radio-frequency communication module that activates on SIM card or the SD card is carried out data trade communication.Since the energy of magnetic coupling signal in the space with the 3 powers decay of distance, and has extraordinary consistency for different mobile phones, so this scheme is when having realized the exchange of radio frequency high-speed data, can well control the distance of SIM card on the various mobile phones or SD card RF data communications, thereby become a kind of reliable electronic payment of mobile terminal solution.In addition, whole receiving processing system is integrated on a SIM card or the SD card, does not need mobile phone is carried out any transformation, therefore has fabulous application and popularization value.
But, in the such scheme, owing to being to bind data interaction between at a high speed the radio-frequency channel by the magnetic channel of low speed, in case the data parameters of magnetic transmission is intercepted, will cause the data of radio-frequency channel at a high speed to have potential safety hazard.
Summary of the invention
Technical problem to be solved by this invention provides a kind of communication connecting method and device, improves the fail safe of transfer of data.
For solving the problems of the technologies described above, the present invention proposes a kind of communication connecting method, comprising:
The first time limit was set;
Send connection request message by magnetic channel;
Whether judgement receives the response message of described connection request message by the radio-frequency channel within described the first time limit;
Determining whether to set up radio communication according to judged result connects.
Further, above-mentioned communication connecting method also can have following characteristics, and described the first time limit is less than or equal to the time sum that the third party obtained, processes and transmitted described connection request message.
Further, above-mentioned communication connecting method also can have following characteristics, also comprises:
The second time limit was set;
After radio communication connects foundation, send application data information by the radio-frequency channel;
Whether judgement receives the response message of described application data information by the radio-frequency channel within described the second time limit;
Determining whether to disconnect radio communication according to judged result connects.
Further, above-mentioned communication connecting method also can have following characteristics, carries encryption key in the described connection request message, and the response message of described connection request message is the ciphertext after being encrypted with this encryption key.
For solving the problems of the technologies described above, the present invention proposes a kind of communication link, comprising:
First arranges module, is used for arranging the first time limit;
The first sending module is used for sending connection request message by magnetic channel;
The first judge module be used for to be judged within described the first time limit, whether received the response message of described connection request message by the radio-frequency channel;
The first processing module is used for determining whether to set up the radio communication connection according to the judged result of described the first judge module.
Further, above-mentioned communication link also can have following characteristics, and described the first time limit is less than or equal to the time sum that the third party obtained, processes and transmitted described connection request message.
Further, above-mentioned communication link also can have following characteristics, also comprises:
Second arranges module, is used for arranging the second time limit;
The second sending module is used for sending application data information by the radio-frequency channel after radio communication connects foundation;
The second judge module be used for to be judged within described the second time limit, whether received the response message of described application data information by the radio-frequency channel;
The second processing module is used for determining whether to disconnect the radio communication connection according to the judged result of described the second judge module.
Further, above-mentioned communication link also can have following characteristics, carries encryption key in the described connection request message, and the response message of described connection request message is the ciphertext after being encrypted with this encryption key.
For solving the problems of the technologies described above, the invention allows for a kind of communication means, comprising:
The second time limit was set;
After radio communication connects foundation, send application data information by the radio-frequency channel;
Whether judgement receives the response message of described application data information by the radio-frequency channel within described the second time limit;
Determining whether to disconnect radio communication according to judged result connects.
Further, above-mentioned communication means also can have following characteristics, and described the second time limit is less than or equal to the time sum that the third party obtained, processes and transmitted described application data information.
For solving the problems of the technologies described above, the invention allows for a kind of communicator, comprising:
Second arranges module, is used for arranging the second time limit;
The second sending module is used for sending application data information by the radio-frequency channel after radio communication connects foundation;
The second judge module be used for to be judged within described the second time limit, whether received the response message of described application data information by the radio-frequency channel;
The second processing module is used for determining whether to disconnect the radio communication connection according to the judged result of described the second judge module.
Further, above-mentioned communicator also can have following characteristics, and described the second time limit is less than or equal to the time sum that the third party obtained, processes and transmitted described application data information.
For solving the problems of the technologies described above, the invention allows for a kind of radio-frequency unit, comprise aforesaid any communication link, and/or, aforesaid any communicator.
Communication connecting method of the present invention and device limit the interaction time of instruction by the time limit is set, reduce the chance of success that the assailant attacks, thus the fail safe that can improve transfer of data.
Description of drawings
Fig. 1 is the flow chart of communication connecting method in the embodiment of the invention;
Fig. 2 is the structure chart of communication link in the embodiment of the invention;
Fig. 3 is the flow chart of communication means in the embodiment of the invention;
Fig. 4 is the structure chart of communicator in the embodiment of the invention;
Fig. 5 is the instruction interaction process schematic diagram in the communication connection of radio-frequency card reader and radio-frequency SIM card in the embodiment of the invention.
Embodiment
Below in conjunction with accompanying drawing principle of the present invention and feature are described, institute gives an actual example and only is used for explaining the present invention, is not be used to limiting scope of the present invention.
Fig. 1 is the flow chart of communication connecting method in the embodiment of the invention.As shown in Figure 1, in the present embodiment, the flow process of communication connecting method comprises the steps:
The first time limit was used for limiting between the master and slave equipment in the instruction interaction time that process is set up in the radio communication connection, to reduce the potential safety hazard of transfer of data on the radio-frequency channel.The executor of communication connecting method of the present invention is main equipment.Main equipment can be radio-frequency card reader that has the magnetic flux telecommunication function etc.
Connection request message can be magnetic channel data information, because this magnetic channel data information is random generation and is to access effectively when inferior, therefore the method that can avoid the assailant to adopt substep to disassemble attack process is attacked, thereby can help further to improve the fail safe of communication connection process.
Need to prove, connection request message is made a general reference the initiation message of communication connection herein, be called a kind of concrete message of its letter and not only be confined to name, for example, having the card seeking Frame that the radio-frequency card reader of magnetic flux telecommunication function sends also is a kind of connection request message.
Further, can carry encryption key in the connection request message, so that be encrypted with the response message of this encryption key to connection request message from equipment.
Wherein, the time point of beginning timing is in connection request message is sent.Preferably, the first time limit can be less than or equal to the time sum that the third party obtained, processes and transmitted connection request message.Here, the third party refers to the opposing party outside the proper communication both sides, normally steals the illegal communication side of the communication information, the assailant who for example mentions herein.
If carry encryption key in the connection request message, the response message of the connection request message of then returning from equipment is to the ciphertext after being encrypted with this encryption key.After main equipment is received the response message of connection request message, just be decrypted and obtained the plaintext of message with encryption key.Certainly, this example is the simplest cipher mode just, and in other embodiments of the invention, the data that the information that transmits at magnetic channel from the equipment utilization main equipment transmits the radio-frequency channel are encrypted and can adopt any cipher mode.
If within the first time limit, received the response message of connection request message by the radio-frequency channel, then illustrate in this communication connection process, connection request message does not have person under attack to attack, perhaps the probability of connection request message person's attack under attack (for example connection request message is intercepted and captured, processed and transmits) is very little, can assert that then this communication connection is safe, therefore, the response message that can believe connection request message is authentic and valid, allow to set up radio communication with the transmit leg of this response message and be connected, carry out follow-up application data mutual.
Set up after radio communication connects, can carry out follow-up application data by the radio-frequency channel mutual, implement concrete communication service.
Step 105 resends connection request message.If within the first time limit, do not receive the response message of connection request message by the radio-frequency channel, think that then this communicates to connect unsuccessfully, resend connection request message, initiate next time connection procedure.
If within the first time limit, do not receive the response message of connection request message by the radio-frequency channel, then illustrate in this communication connection process, connection request message has been subject to assailant's attack, perhaps the probability of connection request message person's attack under attack is very large, can assert that then this communication connection is dangerous, therefore, there is security risk in the response message of this connection request message, forbids setting up that radio communication connects and to carry out follow-up application data mutual.
In the embodiment of the invention, by the first time limit was set, can limit the interaction time of connection request message and its response message, reduce the assailant by intercept and capture connection request message, to connection request message process and forward process after this mode of the connection request message chance of success of attacking, thereby can improve the fail safe of communication connection process, and then provide safety guarantee for the transfer of data of communication connection after setting up.
For example, in the process that radio-frequency card reader and radio-frequency SIM card with the magnetic flux telecommunication function connect, even the assailant has obtained the magnetic channel parameter that radio-frequency card reader sends to radio-frequency SIM card by analysis, and be transmitted to radio-frequency SIM card after the magnetic channel parameter processed, obtain the magnetic channel parameter in this process, transmit after the magnetic channel parameter is processed, processed, if the first time limit of setting, then assailant's attack can't be successful less than the total time of this a series of actions process.Even the assailant will transmit total time spent of this a series of actions less than the first time limit after will obtaining magnetic channel parameter, the processing of magnetic channel parameter, processing by corresponding Apparatus and method for, pass through so the interaction time of the instruction of limitation of radio frequency card reader and radio-frequency SIM card, also can improve assailant's attack difficulty, thereby improve the fail safe of communication connection process, provide safety guarantee for radio communication connects the transfer of data of being undertaken by the radio-frequency channel after the foundation.
Therefore, the communication connecting method of the embodiment of the invention, the fail safe that can improve transfer of data.
Fig. 2 is the structure chart of communication link in the embodiment of the invention.Communication link 200 shown in Figure 2 is in order to implement communication connecting method shown in Figure 1.As shown in Figure 2, in the present embodiment, communication link 200 comprises that first arranges module 210, the first sending module 220, the first judge module 230 and the first processing module 240.First arranges module 210 was used for arranging the first time limit.The first sending module 220 is used for sending connection request message by magnetic channel.The first judge module 230 is used for judging first and module 210 is set in the first set time limit, whether receives the response message of connection request message by the radio-frequency channel.The first processing module 240 is used for determining whether to set up the radio communication connection according to the judged result of the first judge module 230.If within the first time limit, received the response message of connection request message by the radio-frequency channel, think that then this communicates to connect successfully, the first processing module 240 is set up radio communication and is connected; Otherwise, if within the first time limit, do not receive the response message of connection request message by the radio-frequency channel, think that then this communicates to connect unsuccessfully, the first processing module 240 indications the first sending module 220 resends connection request message, initiates next time connection procedure.
Preferably, first 210 the first set time limits of module are set are less than or equal to the time sum that the third party obtained, processes and transmitted connection request message.Here, the third party refers to the opposing party outside the proper communication both sides, normally steals the illegal communication side of the communication information, the assailant who for example mentions herein.
Wherein, the connection request message that sends of the first sending module 220 can be the random magnetic channel data information that produces.Because magnetic channel data information is random generation and is to work as time access effectively, therefore can avoid the assailant to adopt the method for disassembling step by step attack process to attack, thereby can help further to improve the fail safe of communication connection process.
Wherein, can carry encryption key in the connection request message, so that be encrypted with the response message of this encryption key to connection request message from equipment.If carry encryption key in the connection request message, the response message of the connection request message of then returning from equipment is to the ciphertext after being encrypted with this encryption key.After main equipment is received the response message of connection request message, just be decrypted and obtained the plaintext of message with encryption key.Certainly, this example is the simplest cipher mode just, and in other embodiments of the invention, the data that the information that transmits at magnetic channel from the equipment utilization main equipment transmits the radio-frequency channel are encrypted and can adopt any cipher mode.
In the embodiment of the invention, by the first time limit was set, can limit the interaction time of connection request message and its response message, reduce the assailant by intercept and capture connection request message, to connection request message process and forward process after this mode of the connection request message chance of success of attacking, thereby can improve the fail safe of communication connection process, and then provide safety guarantee for the transfer of data of communication connection after setting up.Therefore, the communication link of the embodiment of the invention, the fail safe that can improve transfer of data.
Fig. 3 is the flow chart of communication means in the embodiment of the invention.As shown in Figure 3, in the present embodiment, the flow process of communication means comprises the steps:
Step 301 arranged for the second time limit;
The second time limit was used for limiting the instruction interaction time that connects the rear data transmission procedure of foundation between the master and slave equipment in radio communication, to reduce the potential safety hazard of transfer of data on the radio-frequency channel.
Step 302 after radio communication connects foundation, sends application data information by the radio-frequency channel;
Here, application data information refers to the data that are used for concrete communication service by the radio-frequency channel transmission, be called a kind of specifying information of its letter and not only be confined to name, for example, has the radio-frequency card reader of magnetic flux telecommunication function and the Transaction Information of swiping the card that has between the radio-frequency SIM card of magnetic flux telecommunication function is exactly a kind of application data information.
Step 303 judges whether receive the response message of application data information by the radio-frequency channel within the second time limit, if receive then execution in step 305, otherwise execution in step 304;
Wherein, the time point of beginning timing is in application data information is sent.Preferably, the second time limit can be less than or equal to the time sum that the third party obtained, processes and transmitted application data information.Here, the third party refers to the opposing party outside the proper communication both sides, normally steals the illegal communication side of the communication information, the assailant who for example mentions herein.
Step 304 disconnects radio communication and connects;
If within the second time limit, do not receive the response message of application data information by the radio-frequency channel, then illustrate in this communication connection process, application data information has been subject to assailant's attack, and perhaps the probability of application data information person's attack under attack is very large, can assert that then the data interaction of this radio-frequency channel is dangerous, therefore, there is security risk in the response message of this application data information, forbids continuing to carry out application data by the radio-frequency channel mutual, and disconnects radio communication and connect.
Step 305 is proceeded application data mutual, until finish.In whole application data reciprocal process, guarantee that each time application data interaction time is all less than the second time limit.
If within the second time limit, received the response message of application data information by the radio-frequency channel, then illustrate in the data exchange process of this radio-frequency channel, application data information does not have person under attack to attack, perhaps the person's attack under attack of application data information (for example intercept and capture by application data information, process and transmit) probability very little, the data interaction that then can assert this radio-frequency channel is safe, therefore, the response message that can believe application data information is authentic and valid, allows to continue to carry out data interaction by the radio-frequency channel with the transmit leg of this response message.
In the embodiment of the invention, by the second time limit was set, can the restricting data application message and the interaction time of its response message.If the second time limit less than assailant's intercepted data application message, to the data application message process and forward process after the temporal summation of this a series of actions of market demand information, then assailant's attack can be not successful.Even assailant's intercepted data application message, to the data application message process and forward process after the temporal summation of this a series of actions of market demand information less than the second time limit, interaction time by with the second time limit restricting data application message and its response message also can improve assailant's attack difficulty.As seen, by the second time limit was set, can reduce the chance of success that the assailant attacks, thereby can improve the fail safe that radio communication connects the data transmission procedure after setting up.Therefore, the communication means of the embodiment of the invention can improve the fail safe of transfer of data.
Fig. 4 is the structure chart of communicator in the embodiment of the invention.Communicator 400 shown in Figure 4 is in order to implement communication means flow process shown in Figure 3.As shown in Figure 4, in the present embodiment, communicator 400 comprises that second arranges module 410, the second sending module 420, the second judge module 430 and the second processing module 440.Second arranges module 410 was used for arranging the second time limit.The second sending module 420 is used for sending application data information by the radio-frequency channel after radio communication connects foundation.The second judge module 430 is used for judging second and module 410 is set in the second set time limit, whether receives the response message of application data information by the radio-frequency channel.The second processing module 440 is used for determining whether to disconnect the radio communication connection according to the judged result of the second judge module 430.If within the second time limit, received the response message of application data information by the radio-frequency channel, then the second processing module 440 can not disconnect radio communication and connects, and it is mutual to continue to carry out application data by the radio-frequency channel, until finish.If within the second time limit, do not receive the response message of application data information by the radio-frequency channel, then the second processing module 440 disconnects the radio communication connection.
Preferably, second 410 the second set time limits of module are set are less than or equal to the time sum that the third party obtained, processes and transmitted application data information.The time point that the second time limit began timing is that the second sending module 420 sends in the application data information.The third party refers to the opposing party outside the proper communication both sides, normally steals the illegal communication side of the communication information, the assailant who for example mentions herein.
The application data information that the second sending module 420 sends refers to the data that are used for concrete communication service by the radio-frequency channel transmission, be called a kind of specifying information of its letter and not only be confined to name, for example, has the radio-frequency card reader of magnetic flux telecommunication function and the Transaction Information of swiping the card that has between the radio-frequency SIM card of magnetic flux telecommunication function is exactly a kind of application data information.
In the embodiment of the invention, by the second time limit was set, can the restricting data application message and the interaction time of its response message.If the second time limit less than assailant's intercepted data application message, to the data application message process and forward process after the temporal summation of this a series of actions of market demand information, then assailant's attack can be not successful.Even assailant's intercepted data application message, to the data application message process and forward process after the temporal summation of this a series of actions of market demand information less than the second time limit, interaction time by with the second time limit restricting data application message and its response message also can improve assailant's attack difficulty.As seen, by the second time limit was set, can reduce the chance of success that the assailant attacks, thereby can improve the fail safe that radio communication connects the data transmission procedure after setting up.Therefore, the communicator of the embodiment of the invention can improve the fail safe of transfer of data.
In an embodiment of communication connecting method of the present invention, can also both comprise communication connecting method flow process shown in Figure 1, comprise again communication means flow process shown in Figure 3.Also namely, the first time limit and the second time limit are set respectively, with the first time limit be connected the time limit respectively limitation of radio frequency communication connection set up in the process instruction interaction time in the application data reciprocal process that is connected with radio communication after the foundation.
Correspondingly, in an embodiment of communication link of the present invention, can also both comprise communication link shown in Figure 2 200, comprise again communicator shown in Figure 4 400.In this embodiment, utilize communication link 200 and communicator 400 that the first time limit and the second time limit are set respectively, with the first time limit be connected the time limit respectively limitation of radio frequency communication connection set up in the process instruction interaction time in the application data reciprocal process that is connected with radio communication after the foundation.
Come to comprise again that to both comprising communication connecting method flow process shown in Figure 1 the communication connecting method of communication means flow process shown in Figure 3 is further elaborated below by an instantiation.
Take radio-frequency card reader as example, the communication system at radio-frequency card reader place comprises radio-frequency card reader and radio-frequency SIM card, and radio-frequency card reader and radio-frequency SIM card all have the magnetic flux telecommunication function.
The structure of this radio-frequency card reader and radio-frequency SIM card is respectively:
Radio-frequency card reader comprises the first microcontroller, the first radio-frequency (RF) receiving and transmission module, the first radio-frequency antenna and magnetic signal generating means.The first microcontroller is processed the information of the first radio-frequency (RF) receiving and transmission module transmitting-receiving, produces magnetic channel data information.The first radio-frequency (RF) receiving and transmission module and the first microcontroller be connected radio-frequency antenna and be connected, be used for transmitting and receiving radiofrequency signal.The first radio-frequency antenna for detection of with the radiated radio frequency (RF) signal.The magnetic signal generating means is connected with the first microcontroller, sends the magnetic channel data information that the first microcontroller produces.
Radio-frequency SIM card comprises the second radio-frequency (RF) receiving and transmission module, the second radio-frequency antenna, the second microcontroller, magnetic induction and information receiving module and SIM card module.The second radio-frequency (RF) receiving and transmission module respectively with the second radio-frequency antenna be connected microcontroller and be connected, be used for transmitting and receiving radiofrequency signal.The second microcontroller is used for the magnetic channel information that the radio-frequency information of the second radio-frequency (RF) receiving and transmission module transmitting-receiving, magnetic induction and information receiving module receive is processed.The second radio-frequency antenna for detection of with the radiated radio frequency (RF) signal.The SIM card of SIM card resume module portable terminal is used.Magnetic induction and information receiving module are used for the magnetic signal intensity that the magnetic signal generating means of induction radio-frequency card reader sends, and connect magnetic channel data information, with the affirmation radio-frequency SIM card whether in the closely distance range of radio-frequency card reader.
Fig. 5 is the instruction interaction process schematic diagram in the communication connection of radio-frequency card reader and radio-frequency SIM card in the embodiment of the invention.Suppose that first o'clock of radio-frequency card reader setting is limited to the 8ms(millisecond), be limited to 500ms at second o'clock.As shown in Figure 5, the instruction interaction process in the communication connection of radio-frequency card reader and radio-frequency SIM card comprises:
Radio-frequency card reader sends magnetic channel data information 501 by the magnetic signal generating means to radio-frequency SIM card; After radio-frequency card reader sends magnetic channel data information, magnetic channel data information is carried out irreversible transformation, generate RF spot and address with transformation results, and start the first radio-frequency (RF) receiving and transmission module and receive response message in radio-frequency channel.
The interior radio-frequency SIM card of near field communication range that is in radio-frequency card reader detects magnetic signal intensity and surpasses set point, and is activated after receiving magnetic channel data information, responds radio-frequency channel data 502 to radio-frequency card reader within the time of T1, and T1 is less than 8ms; Radio-frequency SIM card carries out the irreversible transformation identical with the radio-frequency card reader end to the magnetic channel data information that receives, and generates RF spot and address with transformation results and identical algorithm, and sends radio-frequency responsive information to radio-frequency card reader in this radio-frequency channel.
After radio-frequency card reader receives radio-frequency channel data 502, send radio-frequency channel data 503 in the radio-frequency channel; Radio-frequency card reader begins timing after sending magnetic channel data information, in the first time limit (in this example for 8ms) as 502 of radio-frequency channel data not receiving radio-frequency SIM card think this communication failure, radio-frequency card reader is retransmitted magnetic channel data information, carries out again card seeking.
After radio-frequency SIM card receives radio-frequency channel data 503, respond radio-frequency channel data 504 to radio-frequency card reader within the time of T2, finish the access procedure of radio-frequency card reader and radio-frequency SIM card, T2 is less than 8ms; After setting up the radio frequency connection, the application data that starts the radio-frequency channel is mutual.
Radio-frequency card reader sends radio-frequency channel application data 505 to radio-frequency SIM card;
Radio-frequency SIM card is responded radio-frequency channel application data 506 to radio-frequency card reader within the time of T3, T3 is less than 500ms.Radio-frequency card reader sends the 505 rear beginning timing of radio-frequency channel application data, the second time limit, (being 500ms in this example) was if the interior radio-frequency channel application data 506 of not receiving that radio-frequency SIM card is responded, then think this communication failure, radio-frequency card reader disconnects and being connected with the radio frequency of current radio-frequency SIM card.
The communication connecting method of various embodiments of the present invention is applicable to have the radio-frequency unit of magnetic flux telecommunication function, for example has the radio-frequency card reader of magnetic flux telecommunication function.The communication link of various embodiments of the present invention can be loaded in the radio-frequency unit with magnetic flux telecommunication function.
The invention allows for a kind of radio-frequency unit, this radio-frequency unit comprises aforesaid any communication link and/or communicator.This radio-frequency unit can comprise communication link shown in Figure 2 200, also can comprise communicator shown in Figure 4 400, can also not only comprise communication link shown in Figure 2 200 but also comprise communicator shown in Figure 4 400.
Wherein, this radio-frequency unit can be radio-frequency card reader.
Radio-frequency unit of the present invention by the interaction time of the first time limit and/or the second time limit restricting data is set, can reduce the chance of success that the assailant attacks, thus the fail safe that can improve transfer of data.
The above only is preferred embodiment of the present invention, and is in order to limit the present invention, within the spirit and principles in the present invention not all, any modification of doing, is equal to replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (13)
1. a communication connecting method is characterized in that, comprising:
The first time limit was set;
Send connection request message by magnetic channel;
Whether judgement receives the response message of described connection request message by the radio-frequency channel within described the first time limit;
Determining whether to set up radio communication according to judged result connects.
2. communication connecting method according to claim 1 is characterized in that, described the first time limit is less than or equal to the time sum that the third party obtained, processes and transmitted described connection request message.
3. communication connecting method according to claim 1 is characterized in that, also comprises:
The second time limit was set;
After radio communication connects foundation, send application data information by the radio-frequency channel;
Whether judgement receives the response message of described application data information by the radio-frequency channel within described the second time limit;
Determining whether to disconnect radio communication according to judged result connects.
4. communication connecting method according to claim 1 is characterized in that, carries encryption key in the described connection request message, and the response message of described connection request message is the ciphertext after being encrypted with this encryption key.
5. a communication link is characterized in that, comprising:
First arranges module, is used for arranging the first time limit;
The first sending module is used for sending connection request message by magnetic channel;
The first judge module be used for to be judged within described the first time limit, whether received the response message of described connection request message by the radio-frequency channel;
The first processing module is used for determining whether to set up the radio communication connection according to the judged result of described the first judge module.
6. communication link according to claim 5 is characterized in that, described the first time limit is less than or equal to the time sum that the third party obtained, processes and transmitted described connection request message.
7. communication link according to claim 5 is characterized in that, also comprises:
Second arranges module, is used for arranging the second time limit;
The second sending module is used for sending application data information by the radio-frequency channel after radio communication connects foundation;
The second judge module be used for to be judged within described the second time limit, whether received the response message of described application data information by the radio-frequency channel;
The second processing module is used for determining whether to disconnect the radio communication connection according to the judged result of described the second judge module.
8. communication connecting method according to claim 5 is characterized in that, carries encryption key in the described connection request message, and the response message of described connection request message is the ciphertext after being encrypted with this encryption key.
9. a communication means is characterized in that, comprising:
The second time limit was set;
After radio communication connects foundation, send application data information by the radio-frequency channel;
Whether judgement receives the response message of described application data information by the radio-frequency channel within described the second time limit;
Determining whether to disconnect radio communication according to judged result connects.
10. communication means according to claim 9 is characterized in that, described the second time limit is less than or equal to the time sum that the third party obtained, processes and transmitted described application data information.
11. a communicator is characterized in that, comprising:
Second arranges module, is used for arranging the second time limit;
The second sending module is used for sending application data information by the radio-frequency channel after radio communication connects foundation;
The second judge module be used for to be judged within described the second time limit, whether received the response message of described application data information by the radio-frequency channel;
The second processing module is used for determining whether to disconnect the radio communication connection according to the judged result of described the second judge module.
12. communicator according to claim 11 is characterized in that, described the second time limit is less than or equal to the time sum that the third party obtained, processes and transmitted described application data information.
13. a radio-frequency unit is characterized in that, comprises each described communication link of claim 5 to 8, and/or, claim 11 or 12 described communicators.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011102990445A CN103024736A (en) | 2011-09-28 | 2011-09-28 | Communication connecting method and device |
| PCT/CN2012/076893 WO2013044646A1 (en) | 2011-09-28 | 2012-06-14 | Communication connection method and apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011102990445A CN103024736A (en) | 2011-09-28 | 2011-09-28 | Communication connecting method and device |
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| CN103024736A true CN103024736A (en) | 2013-04-03 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2011102990445A Pending CN103024736A (en) | 2011-09-28 | 2011-09-28 | Communication connecting method and device |
Country Status (2)
| Country | Link |
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| CN (1) | CN103024736A (en) |
| WO (1) | WO2013044646A1 (en) |
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| Publication number | Publication date |
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| WO2013044646A1 (en) | 2013-04-04 |
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