HK1208771B - Wireless communication method and device and intelligent card - Google Patents
Wireless communication method and device and intelligent card Download PDFInfo
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- HK1208771B HK1208771B HK15109354.4A HK15109354A HK1208771B HK 1208771 B HK1208771 B HK 1208771B HK 15109354 A HK15109354 A HK 15109354A HK 1208771 B HK1208771 B HK 1208771B
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Abstract
The present invention discloses a wireless communication method, device, and smart card. The smart card generates communication parameters based on its own information and transmits its own information and/or communication parameters through a first communication method; The smart card establishes a second communication method connection with the other end that receives its own information or communication parameters through communication parameters. The second communication method is a wireless communication method different from the first communication method.The present invention avoids manual input operations by users through the above technical solutions, and the information used to generate communication parameters is the information of the smart card itself. The communication parameters generated based on such information are not easily duplicated, which can improve the security of wireless communication connections.
Description
Technical Field
The invention relates to the technical field of electronics, in particular to a wireless communication method, a wireless communication device and an intelligent card.
Background
Before the existing equipment establishes wireless communication, a user needs to manually input communication parameters such as passwords and the like. Taking Bluetooth (Bluetooth) communication as an example, the pairing password is either manually input to the master device and the slave device after being constructed by the user, or is output (for example, displayed) after being automatically generated by the master device and then manually input to the slave device by the user, and the way of generating the pairing password by the master device is not limited to: firstly, using a fixed PIN code (such as 0000 or 1234) as a pairing password; generating a pairing password through a specific algorithm according to information such as a current Bluetooth clock, an address code, a random number and the like; and thirdly, using the algorithm key as a pairing password. Either way, on one hand, the user is required to memorize the communication parameters and manually input the communication parameters into the corresponding equipment; on the other hand, the security is not sufficient, regardless of the communication parameters conceived by the user or generated by the master device.
Disclosure of Invention
The invention provides a wireless communication method, a wireless communication device and a smart card, and solves the problems that the establishment of wireless communication connection between existing devices is not convenient enough and the security is not high.
In order to solve the technical problems, the invention adopts the following technical scheme:
a method of wireless communication, comprising: the intelligent card generates communication parameters according to self information and transmits the self information and/or the communication parameters in a first communication mode; the self information comprises smart card storage information and/or smart card generation information; and the intelligent card establishes connection of a second communication mode with the opposite end which receives the self information or the communication parameters through the communication parameters, wherein the second communication mode is a wireless communication mode different from the first communication mode.
Another wireless communication method, comprising: receiving self information of the smart card and/or communication parameters generated by the smart card according to the self information sent by the smart card through a first communication mode, wherein the self information comprises smart card storage information and/or smart card generation information; if the received information does not include the communication parameters, the communication parameters are generated according to the received self information; and establishing connection of a second communication mode with the intelligent card through the communication parameters, wherein the second communication mode is a wireless communication mode different from the first communication mode.
A smart card comprising a first parameter generation module, a first communication module, and a second communication module, wherein: the first parameter generation module is used for generating communication parameters according to self information, wherein the self information comprises the storage information of the intelligent card and/or the generation information of the intelligent card; the first communication module is used for transmitting the self information and/or the communication parameters in a first communication mode; the second communication module is used for establishing connection of a second communication mode with an opposite end which receives the self information or the communication parameters through the communication parameters, wherein the second communication mode is a wireless communication mode different from the first communication mode.
A wireless communications apparatus, comprising: the third communication module is used for receiving self information of the intelligent card and/or communication parameters generated by the intelligent card according to the self information sent by the intelligent card through a first communication mode, wherein the self information comprises intelligent card storage information and/or intelligent card generation information; the second parameter generation module is used for generating communication parameters according to the self information received by the third communication module; and the fourth communication module is used for establishing connection of a second communication mode with the intelligent card through the communication parameters, wherein the second communication mode is a wireless communication mode different from the first communication mode.
According to the wireless communication method, the wireless communication device and the intelligent card, the intelligent card generates the communication parameters required by the second communication mode, and the communication parameters or the information according to which the communication parameters are generated are transmitted to the wireless communication device through another communication mode, namely the first communication mode, so that the condition that a user manually inputs the communication parameters required by the second communication mode is avoided; meanwhile, the information on which the communication parameters are generated is the smart card storage information and/or the smart card generation information, and the probability of repetition is generally lower compared with other information due to the fact that the smart card storage information and the smart card generation information are generated, and the communication parameters generated according to the information are not easy to repeat, so that the uniqueness of connection establishment can be guaranteed, and the safety of wireless communication connection can be improved.
Furthermore, the first communication mode is a one-to-one communication mode such as contact communication or low-frequency magnetic induction communication, so that the communication parameters transmitted to the wireless communication device by the smart card or the information according to which the communication parameters are generated can be ensured not to be acquired by other equipment, and the safety of wireless communication connection can be further improved.
Drawings
Fig. 1 is a flowchart of a wireless communication method according to an embodiment of the present invention;
fig. 2 is a flowchart of a wireless communication method according to another embodiment of the present invention;
FIG. 3 is a diagram of a smart card according to an embodiment of the present invention;
fig. 4 is a schematic diagram of a wireless communication device according to an embodiment of the present invention.
Detailed Description
In order to make the establishment of the wireless communication connection more convenient and safer, the invention provides a conception that the intelligent card generates the communication parameter according to the self information and transmits the communication parameter or the self information according to which the communication parameter is generated to the wireless communication device through another channel, on one hand, the manual input operation of the user is avoided, and the wireless communication connection is more convenient; on the other hand, the information on which the communication parameters are generated is the information of the intelligent card, and the repetition probability of the information of the intelligent card is low, so that the uniqueness of connection establishment can be ensured, and the safety of wireless communication connection can be improved. The present invention will be described in further detail with reference to the following detailed description and accompanying drawings.
Fig. 1 is a flowchart of a wireless communication method according to an embodiment of the present invention, please refer to fig. 1, which includes the following steps:
s101, the smart card generates communication parameters according to the self information and transmits the self information and/or the communication parameters in a first communication mode.
In this embodiment, the communication parameters refer to parameters required for establishing the second communication mode in step S102. Compared with the information on which the communication parameters are generated in the prior art, the information of the intelligent card is not easy to repeat, and the safety is higher, so that the generated communication parameters are not easy to repeat, and the safety is high.
Preferably, the smart card own information includes smart card storage information and/or smart card generation information.
Preferably, the smart card storage information includes smart card identification information and/or information externally input and stored in the smart card, the smart card identification information including but not limited to: an IMSI; information that is externally input and stored on the smart card includes, but is not limited to: a password entered by the user. The smart card generation information includes, but is not limited to, all or part of a random number generated by the smart card, including a true random number generated by a hardware module in the smart card and/or a pseudo random number generated by a software module in the smart card, wherein the true random number generated by the hardware module in the smart card includes, but is not limited to, a true random number generated by a security chip in the smart card.
Preferably, the first communication mode includes a one-to-one communication mode, and the smart card information and the communication parameters are transmitted in the one-to-one communication mode, so that the transmitted information is prevented from being acquired by other devices, and the secure connection of the second communication mode in step S102 can be further ensured. The one-to-one communication method includes, but is not limited to: contact communication, low frequency magnetic induction communication. Among these, contact type contact communication includes but is not limited to: 7816 interface communication.
S102, the smart card establishes connection of a second communication mode with the opposite terminal receiving the self information or the communication parameters through the communication parameters.
If the opposite terminal receives the communication parameters, the connection of a second communication mode can be directly established with the intelligent card according to the received communication parameters; if the opposite terminal receives the information of the intelligent card, the opposite terminal also needs to generate the same communication parameters according to the received information of the intelligent card and the same algorithm as the intelligent card, and then establishes connection of a second communication mode with the intelligent card according to the generated communication parameters.
The specific process of establishing the connection of the second communication mode by the smart card and the opposite terminal according to the communication parameters includes, but is not limited to, the following:
firstly, after receiving communication parameters through a first communication mode or generating the communication parameters according to self information of the smart card received by the first communication mode, an opposite terminal sends a connection establishment request of a second communication mode to the smart card, wherein the request carries the received or generated communication parameters, after receiving the request, the smart card is compared with the self generated communication parameters in the step S101, if the request is consistent, connection is established, and if the request is inconsistent, connection is refused.
Secondly, after the smart card transmits the information and/or the communication parameters of the smart card in the step S101 in the first communication mode, the smart card initiates a connection establishment request of a second communication connection regardless of whether the opposite terminal receives the information or not, the request carries the communication parameters generated in the step S101, the opposite terminal compares the communication parameters carried in the request with the communication parameters received in the first communication mode or the communication parameters generated according to the information of the smart card received in the first communication mode, if the communication parameters are consistent, the connection is established, and if the communication parameters are inconsistent, the connection is rejected.
The difference between the two modes is that the first mode is authenticated by an opposite terminal, and the second mode is authenticated by the smart card. Of course, the connection establishment procedure of the second communication mode is not limited to the above two.
The second communication method is a wireless communication method different from the first communication method. The second communication method in this embodiment includes all wireless communication methods that require communication parameters to establish a connection, including but not limited to: one or more of bluetooth communication, WIFI communication or radio frequency communication. If the second communication mode includes bluetooth communication, the communication parameter may be a bluetooth pairing password required for establishing the bluetooth communication; if the second communication mode includes WIFI communication, the communication parameter may be a WIFI password required for establishing the WIFI communication; if the second communication mode comprises radio frequency communication, the communication parameters may be radio frequency parameters (including but not limited to passwords) required to establish the radio frequency communication.
In this embodiment, the smart card and the opposite terminal establish the connection of the second communication mode through the above processes, and after the connection is established, the smart card and the opposite terminal may perform data transmission through the second communication mode, and may also disconnect the connection of the first communication mode for power saving or other needs. In the process of data transmission between the smart card and the opposite terminal through the second communication mode, in order to further ensure the security of data transmission, data can be encrypted, preferably, the smart card and the opposite terminal use a symmetric key to encrypt and decrypt the data, more preferably, a key is generated according to the self information of the smart card, because in the step S101, the smart card transmits the self information to the opposite terminal, the opposite terminal can generate the key according to the self information, or the smart card can directly transmit the key to the opposite terminal through the first communication mode after generating the key according to the self information, so that the opposite terminal can directly use the key after receiving the key.
Fig. 2 is a flowchart of a wireless communication method according to another embodiment of the present invention, please refer to fig. 2, which includes the following steps:
s201, receiving self information of the smart card sent by the smart card and/or communication parameters generated by the smart card according to the self information through a first communication mode, if the received information comprises the communication parameters, directly entering the step S202, and if the received information does not comprise the communication parameters, generating the communication parameters according to the received self information, and then entering the step S202.
The communication parameters refer to parameters necessary for establishing the second communication mode in step S202. Compared with the information on which the communication parameters are generated in the prior art, the information of the intelligent card is not easy to repeat and has higher safety. Preferably, the smart card own information includes smart card storage information and/or smart card generation information. Preferably, the smart card stored information includes information stored by the smart card having uniqueness, such as smart card identification information, including but not limited to: an IMSI. The smart card generation information includes, but is not limited to, all or part of a random number generated by the smart card, including a true random number generated by a hardware module in the smart card and/or a pseudo random number generated by a software module in the smart card, wherein the true random number generated by the hardware module in the smart card includes, but is not limited to, a true random number generated by a security chip in the smart card.
Preferably, the first communication mode includes a one-to-one communication mode, and the smart card information and the communication parameters are transmitted in the one-to-one communication mode, so that the transmitted information can be prevented from being acquired by other devices, and the secure connection of the second communication mode in step S202 can be further ensured. The one-to-one communication method includes, but is not limited to: contact communication, low frequency magnetic induction communication. Among these, contact type contact communication includes but is not limited to: 7816 interface communication.
S202, establishing connection of a second communication mode with the intelligent card through the communication parameters received or generated in the step S201.
Specific processes of step S202 include, but are not limited to, the following:
firstly, after receiving or generating the communication parameters in step S201, sending a connection establishment request of the second communication mode to the smart card, where the request carries the received or generated communication parameters, and after receiving, the smart card compares the received or generated communication parameters with the communication parameters generated by the smart card, if the communication parameters are consistent, the connection is established, and if the communication parameters are not consistent, the connection is rejected.
Secondly, before step S201, after the smart card transmits the information and/or the communication parameters of the smart card through the first communication mode, regardless of whether the opposite terminal receives the information, the smart card initiates a connection establishment request of the second communication connection, the request carries the communication parameters generated by the smart card according to the information of the smart card, the opposite terminal compares the communication parameters carried in the request with the generated communication parameters received in step S201, if yes, the connection is established, and if not, the connection is rejected.
The second communication method is a wireless communication method different from the first communication method. The second communication method in this embodiment includes all wireless communication methods that require communication parameters to establish a connection, including but not limited to: one or more of bluetooth communication, WIFI communication or radio frequency communication. If the second communication mode includes bluetooth communication, the communication parameter may be a bluetooth pairing password required for establishing the bluetooth communication; if the second communication mode includes WIFI communication, the communication parameter may be a WIFI password required for establishing the WIFI communication; if the second communication mode comprises radio frequency communication, the communication parameters may be radio frequency parameters (including but not limited to passwords) required to establish the radio frequency communication.
In this embodiment, after the connection of the second communication mode is established with the smart card, data transmission may be performed with the smart card through the second communication mode, and the connection of the first communication mode may also be disconnected for power saving or other needs. In the process of data transmission with the smart card in the second communication mode, in order to further ensure the security of data transmission, data may be encrypted, preferably, a symmetric key is used to encrypt and decrypt the data, and more preferably, a key is generated according to the information of the smart card received in the step S201, or in the step S201, a key transmitted by the smart card is received in the first communication mode, so that the key can be directly used after being received.
The invention also provides an intelligent card, which comprises a first parameter generation module, a first communication module and a second communication module, wherein the first parameter generation module is used for generating communication parameters according to self information, and the self information comprises the storage information of the intelligent card and/or the generation information of the intelligent card; the first communication module is used for transmitting the self information and/or the communication parameters in a first communication mode; the second communication module is used for establishing connection of a second communication mode with an opposite end which receives the self information or the communication parameters through the communication parameters, wherein the second communication mode is a wireless communication mode different from the first communication mode.
In some embodiments, the smart card storage information includes smart card identification information and/or information externally input and stored on the smart card, including but not limited to: an IMSI; information that is externally input and stored on the smart card includes, but is not limited to: a password entered by the user.
In some embodiments, the smart card generated information includes, but is not limited to, all or part of a random number generated by the smart card, the random number generated by the smart card including a true random number generated by a hardware module in the smart card and/or a pseudo random number generated by a software module in the smart card, preferably, the information generation module includes a hardware module for generating a true random number and/or a software module for generating a pseudo random number; preferably, the information generation module comprises a security chip, the security chip is used for generating a true random number, and all or part of the true random number generated by the security chip is used as smart card generation information for generating communication parameters.
In some embodiments, the first communication module comprises a one-to-one communication module, and the information and the communication parameters of the smart card are transmitted in a one-to-one communication mode, so that the transmitted information can be prevented from being acquired by other equipment, and the secure connection of the second communication module can be further ensured; the first communication module includes, but is not limited to: a contact communication module or a low frequency magnetic induction communication module, wherein the contact communication module includes, but is not limited to: 7816 interface.
The second communication module includes all wireless communication modules requiring communication parameters to establish wireless communication connection, including but not limited to: one or more of a Bluetooth communication module, a WIFI communication module or a radio frequency communication module. If the second communication module comprises a bluetooth communication module, the communication parameter may be a bluetooth pairing password required for establishing bluetooth communication; if the second communication module comprises a WIFI communication module, the communication parameter can be a WIFI password required for establishing WIFI communication; if the second communication module comprises a radio frequency communication module, the communication parameters may be radio frequency parameters (including but not limited to passwords) required to establish radio frequency communication.
In some embodiments, after the smart card establishes the connection of the second communication mode with the opposite terminal, data transmission may be performed through the second communication module, and the connection of the first communication module may also be disconnected for power saving or other needs.
In some embodiments, in the process of data transmission between the smart card and the opposite end through the second communication module, in order to further ensure the security of data transmission, the smart card may encrypt data, preferably, the smart card further includes a first encryption and decryption module, and more preferably, the first encryption and decryption module encrypts and decrypts data by using a symmetric key, and more preferably, the first encryption and decryption module generates a key according to the information of the smart card itself.
Fig. 3 shows, as an example, a smart card 3 including an information storage module 31, an information generation module 32, a first parameter generation module 33, a first communication module 34, and a second communication module 35, where the information storage module 31 is configured to store an imsi (international mobile subscriber identity) as smart card storage information; the information generation module 32 is used for generating a true random number and/or a pseudo random number as the generation information of the smart card; the first parameter generating module 33 is configured to generate communication parameters according to self information, where the self information includes smart card storage information in the information storage module 31 and/or smart card generation information generated by the information generating module 32; the first communication module 34 is configured to transmit the self information and/or the communication parameters generated by the first parameter generating module 33 through a first communication mode; the second communication module 35 is configured to establish a connection of a second communication mode with an opposite end that receives the self information or the communication parameter transmitted by the first communication module 34 through the communication parameter generated by the first parameter generation module 33, where the second communication module 35 is different from the first communication module 34.
The smart card provided by the invention comprises but is not limited to a SIM card and an SD card.
The present invention further provides a wireless communication apparatus, as shown in fig. 4, as an embodiment, the wireless communication apparatus 4 includes a third communication module 41, a second parameter generation module 42, and a fourth communication module 43, where the third communication module 41 is configured to receive, by a first communication method, self information of a smart card and/or communication parameters generated by the smart card according to the self information, where the self information includes smart card storage information and/or smart card generation information; the second parameter generating module 42 is configured to generate a communication parameter according to the self information received by the third communication module; the fourth communication module 43 is configured to establish a connection of a second communication mode with the smart card through the communication parameter, where the second communication mode is a wireless communication mode different from the first communication mode.
In some embodiments, the second parameter generation module 42 may be omitted if the third communication module 41 includes communication parameters in the information received from the smart card.
In some embodiments, the third communication module 41 includes: a module for one-to-one communication. Preferably, the third communication module 41 includes: one of a contact type contact communication module or a low frequency magnetic induction communication module. Contact communication modules include, but are not limited to: 7816 interface.
In some embodiments, the fourth communication module 43 includes: one or more of a Bluetooth communication module, a WIFI communication module or a radio frequency communication module.
In some embodiments, in the process of data transmission between the wireless communication device 4 and the smart card through the fourth communication module 43, in order to further ensure the security of data transmission, data may be encrypted, preferably, the wireless communication device 4 further includes a second encryption and decryption module, and more preferably, the second encryption and decryption module encrypts and decrypts data by using a symmetric key, and more preferably, the second encryption and decryption module generates a key according to the information of the smart card itself, and in some embodiments, the third communication module 41 is further configured to directly obtain the key from the smart card, and the wireless communication device 4 can directly use the key after obtaining the key, so that the key generation step is omitted.
The invention also provides a wireless communication system, which comprises the intelligent card and the wireless communication device, wherein the intelligent card transmits self information and/or communication parameters generated according to the self information to the wireless communication device in a first communication mode, and the self information comprises intelligent card storage information and/or intelligent card generation information; the wireless communication device receives the self information and the communication parameters through a first communication mode, and if the received information does not include the communication parameters, the wireless communication device also generates the communication parameters according to the received self information; the smart card and the wireless communication device establish connection of a second communication mode through the communication parameters, wherein the second communication mode is a wireless communication mode different from the first communication mode. The wireless communication device may be a terminal, which may be a terminal in which the smart card is built.
In the following, taking the example of establishing bluetooth communication between a mobile phone and a built-in SIM card in the mobile phone, and the first communication mode is 7816 interface communication, the present invention will be further described in detail:
the mobile phone and the SIM card establish one-to-one communication through a 7816 interface, the SIM card reads IMSI information in a storage space and a true random number generated in a security chip, a Bluetooth pairing password is generated according to the IMSI information and the true random number generated by the security chip, a mobile phone end sends a specific 7816 instruction, the IMSI information and the true random number are obtained from the SIM card through the 7816 interface, after the IMSI information and the true random number are obtained, the same Bluetooth pairing password is generated according to the IMSI information and the true random number according to the same algorithm, and the mobile phone and the SIM card establish Bluetooth connection through the generated Bluetooth pairing password. In another embodiment, if the mobile phone obtains the bluetooth pairing password from the SIM card through the 7816 interface, the mobile phone can directly establish bluetooth communication with the SIM card according to the bluetooth pairing password. After the Bluetooth communication is established between the mobile phone and the SIM card, data interaction can be carried out through the Bluetooth communication, and in the interaction process, the mobile phone and the SIM card can also generate a secret key according to the IMSI information and the true random number according to the same algorithm to encrypt and decrypt data transmitted on a Bluetooth channel.
In this embodiment, because the IMSI identity of the SIM card has global uniqueness, the security chip built in the SIM card can generate a true random number, and the mobile phone and the SIM card generate a bluetooth pairing password according to the IMSI and the true random number, so that the established bluetooth connection has higher security, and meanwhile, the mobile phone and the SIM card transmit the IMSI and the true random number through a 7816 interface, or the bluetooth pairing password, no manual input is required, and because the 7816 interface has a one-to-one communication characteristic, the transmitted information cannot be acquired by other devices, and further, the security of the bluetooth connection is ensured.
The foregoing is a more detailed description of the present invention that is presented in conjunction with specific embodiments, and the practice of the invention is not to be considered limited to those descriptions. For those skilled in the art to which the invention pertains, several simple deductions or substitutions can be made without departing from the spirit of the invention, and all shall be considered as belonging to the protection scope of the invention.
Claims (12)
1. A method of wireless communication, comprising:
the smart card generates communication parameters according to the self information, establishes contact type contact communication with an opposite terminal, and transmits the self information and/or the communication parameters to the opposite terminal through the contact type contact communication; the self information comprises smart card storage information and/or smart card generation information;
and the smart card establishes connection of a second communication mode with the opposite terminal receiving the self information or the communication parameters through the communication parameters, wherein the second communication mode is a wireless communication mode different from the contact type contact communication.
2. The wireless communication method of claim 1, wherein the contact communication comprises: 7816 interface communication.
3. The wireless communication method of claim 1 or 2, wherein the smart card storing information comprises: an international mobile subscriber identity; the smart card generating information includes: all or part of a random number generated by the smart card, the random number generated by the smart card comprising a true random number generated by a hardware module in the smart card and/or a pseudo random number generated by a software module in the smart card.
4. The method of claim 3, wherein the true random number generated by the hardware module of the smart card comprises a true random number generated by a security chip.
5. A method of wireless communication, comprising:
establishing contact communication with the smart card, and receiving self information of the smart card and/or communication parameters generated by the smart card according to the self information sent by the smart card through the contact communication, wherein the self information comprises smart card storage information and/or smart card generation information;
if the received information does not include the communication parameters, generating the communication parameters according to the received self information;
and establishing connection of a second communication mode with the intelligent card through the communication parameters, wherein the second communication mode is a wireless communication mode different from the contact communication.
6. The wireless communication method of claim 5, wherein the contact communication comprises: 7816 interface communication.
7. A smart card comprising a first parameter generation module, a first communication module, and a second communication module, wherein:
the first parameter generation module is used for generating communication parameters according to self information, wherein the self information comprises the storage information of the intelligent card and/or the generation information of the intelligent card;
the first communication module is used for establishing contact type contact communication with an opposite terminal and transmitting the self information and/or the communication parameters to the opposite terminal through the contact type contact communication;
the second communication module is used for establishing connection of a second communication mode with an opposite end which receives the self information or the communication parameters through the communication parameters, wherein the second communication mode is a wireless communication mode different from the first communication mode.
8. The smart card of claim 7, wherein the contact communication module comprises: 7816 interface.
9. The smart card of claim 7 or 8, further comprising an information storage module and/or an information generation module, wherein:
the information storage module is used for storing the international mobile subscriber identity as the storage information of the intelligent card;
the information generation module is used for generating true random numbers and/or pseudo random numbers as the generation information of the intelligent card.
10. The smart card of claim 9, wherein the information generation module comprises a secure chip.
11. A wireless communications apparatus, comprising:
the third communication module is used for establishing contact type contact communication with the intelligent card, receiving self information of the intelligent card and/or communication parameters generated by the intelligent card according to the self information sent by the intelligent card through the contact type contact communication, wherein the self information comprises intelligent card storage information and/or intelligent card generation information;
the second parameter generation module is used for generating communication parameters according to the self information received by the third communication module;
and the fourth communication module is used for establishing connection of a second communication mode with the intelligent card through the communication parameters, wherein the second communication mode is a wireless communication mode different from the first communication mode.
12. The wireless communication device of claim 11, wherein the contact communication module comprises: 7816 interface.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410830032.4A CN104540238B (en) | 2014-12-26 | 2014-12-26 | Wireless communication method and device and intelligent card |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| HK1208771A1 HK1208771A1 (en) | 2016-03-11 |
| HK1208771B true HK1208771B (en) | 2018-03-16 |
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