WO2021012646A1 - 一种nfc装置及基于其的信息处理方法 - Google Patents

一种nfc装置及基于其的信息处理方法 Download PDF

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Publication number
WO2021012646A1
WO2021012646A1 PCT/CN2020/071692 CN2020071692W WO2021012646A1 WO 2021012646 A1 WO2021012646 A1 WO 2021012646A1 CN 2020071692 W CN2020071692 W CN 2020071692W WO 2021012646 A1 WO2021012646 A1 WO 2021012646A1
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Prior art keywords
information
field communication
clock
near field
power control
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PCT/CN2020/071692
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English (en)
French (fr)
Inventor
张鸿
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创新先进技术有限公司
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Priority to US16/804,335 priority Critical patent/US10720966B1/en
Priority to US16/915,639 priority patent/US10873368B1/en
Publication of WO2021012646A1 publication Critical patent/WO2021012646A1/zh

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    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • 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
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • 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
    • G06K7/10297—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 handling protocols designed for non-contact record carriers such as RFIDs NFCs, e.g. ISO/IEC 14443 and 18092
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • 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
    • G06K7/10316—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 using at least one antenna particularly designed for interrogating the wireless record carriers
    • G06K7/10346—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 using at least one antenna particularly designed for interrogating the wireless record carriers the antenna being of the far field type, e.g. HF types or dipoles

Definitions

  • the embodiments of this specification relate to the field of near field communication technology, and more specifically, to an NFC device and an information processing method based thereon.
  • NFC Near Field Communication
  • RFID Radio Frequency Technology
  • NFC is a short-range radio frequency technique, the operating frequency of 13.56MHz to 20 cm from, the RFID is relative low cost, high bandwidth, and low power consumption.
  • NFC promotes standardization under the framework of ISO 18092, ECMA 340 and ETSI TS 102 190. It is also compatible with widely used ISO 14443, Type-A, ISO 15693, B and Felica and other protocol standards.
  • the ISO 15693 protocol has a longer communication distance than the ISO 14443 protocol, which can reach 1.5m when the energy is large, so it has an advantage in factory supply chain management.
  • the IOS 14443 standard has a security feature that is not easy to be attacked by man-in-the-middle attacks in banking and financial applications because the communication distance is close to ⁇ 10cm.
  • bank-related NFC cards use the ISO 14443 protocol.
  • the NFC card including the CPU circuit has the disadvantage of high cost and high power consumption compared with the NFC card including the logic circuit, and cannot support long-distance communication. But the front can run asymmetric national encryption algorithms such as SM2, which has a higher level of security.
  • a near field communication device including: an antenna; a radio frequency module connected to the antenna, wherein the radio frequency module outputs a first near field communication device based on the radio frequency signal from the antenna; The first information of the field communication protocol; CPU circuit; and power control module,
  • the CPU circuit is connected to the radio frequency module through the power control module, and the power control module controls the CPU circuit based on the instructions included in the first information, so that the The CPU circuit is suppressed when the communication distance of the field communication protocol is greater than a predetermined threshold.
  • the indication is a protocol identification or a specific instruction.
  • the device further includes a logic circuit that is connected to the radio frequency module through the power control module, wherein the power control module also enables the communication between the first near field communication protocol The logic circuit is suppressed when the communication distance is less than the predetermined threshold.
  • the power control module includes a mos tube switch or a clock switch.
  • the device further includes a storage module, wherein the CPU circuit and the logic circuit are respectively connected to the storage module, wherein the device is an anti-counterfeiting electronic tag, and the storage module stores Anti-counterfeiting information.
  • the radio frequency module includes a demodulator, and a first decoder and a second decoder respectively connected to the demodulator, the first decoder and the second decoder Corresponding to the two near field communication protocols respectively, the demodulator outputs the baseband signal to the corresponding decoder based on the protocol identifier included in the baseband signal demodulated, wherein the two near field communication protocols The communication distance of one near field communication protocol in the protocol is less than the predetermined threshold, and the communication distance of the other near field communication protocol is greater than the predetermined threshold.
  • the two near field communication protocols are the ISO 14443A protocol and the ISO 15693 protocol respectively.
  • the near field communication device is the aforementioned near field communication device.
  • the method includes:
  • the CPU circuit is controlled by the power control module so that the CPU circuit is suppressed when the communication distance of the first near field communication protocol is greater than a predetermined threshold.
  • Information processing in response to the first information.
  • the power control module includes a first clock switching switch, and the first clock switching switch is connected to the CPU circuit, wherein, based on the instructions included in the first information, the power supply
  • the control module controlling the CPU circuit includes, in the case that the communication distance of the first near field communication protocol is greater than a predetermined threshold and the clock frequency provided by the first clock switch is the operating frequency, making the first A clock switch provides a reduced clock frequency or stops providing a clock signal.
  • controlling the CPU circuit through the power control module includes: when the communication distance of the first near field communication protocol is less than a predetermined threshold, and In the case that the clock frequency provided by the first clock switching switch is not the operating frequency, the first clock switching switch is caused to restore the provided clock frequency to the operating frequency, so that the CPU circuit responds to the first Information processing.
  • the method further includes, based on the instruction included in the first information, controlling the logic circuit through the power control module to enable communication in the first near field communication protocol In the case where the distance is less than the predetermined threshold, information processing of the logic circuit in response to the first information is suppressed.
  • the power control module further includes a second clock switching switch, the second clock switching switch is connected to the logic circuit, wherein, based on the instruction included in the first information, the The control of the logic circuit by the power control module further includes, in the case that the communication distance of the first near field communication protocol is less than the predetermined threshold and the clock frequency of the second clock switch is the operating frequency, making The second clock switching switch provides a reduced clock frequency or stops providing a clock signal.
  • controlling the logic circuit by the power control module further includes: when the communication distance of the first near field communication protocol is greater than the predetermined threshold And when the clock frequency provided by the second clock switching switch is not the operating frequency, the second clock switching switch is made to restore the provided clock frequency to the operating frequency, so that the logic circuit responds to the operating frequency.
  • the first information is used for information processing.
  • the power control module includes a mos tube switch, and the mos tube switch is connected to the CPU circuit, wherein, based on the instruction included in the first information, the power control module controls the The control performed by the CPU circuit includes, when the communication distance of the first near field communication protocol is greater than a predetermined threshold, and the MOSFET switch is in a connected state, switching the MOSFET switch to an off state.
  • controlling the CPU circuit through the power control module includes: when the communication distance of the first near field communication protocol is less than the predetermined threshold, And when the mos tube switch is in the off state, the mos tube switch is switched to the on state.
  • the storage module stores anti-counterfeiting data and a key
  • enabling the logic circuit to perform information processing in response to the first information includes causing the logic circuit to use the key
  • the anti-counterfeiting data is encrypted to obtain the encrypted anti-counterfeiting data as the second information, and the method further includes sending the second information to the reader/writer through the radio frequency module and the antenna.
  • the storage module further stores a private key, a public key, and a first digital signature of the public key by an authority, and the first information includes a first random number, wherein the CPU circuit Performing information processing in response to the first information includes causing the CPU circuit to use the private key to sign the anti-counterfeiting data and the random number to obtain a second digital signature, so that the anti-counterfeiting data, the The public key, the first digital signature, and the second digital signature are used as second information, and the method further includes sending the second information to the reader/writer through the radio frequency module and the antenna.
  • receiving the first information from the reader through the radio frequency module includes demodulating the signal induced by the antenna into a baseband signal through the demodulator, based on The protocol identifier included in the baseband signal outputs the baseband signal to a corresponding decoder, and the baseband signal is converted into binary data by the corresponding decoder as the first information.
  • Figure 1 shows a schematic diagram of an NFC system
  • Fig. 2 shows a near field communication device 200 according to an embodiment of this specification
  • FIG. 3 shows an example structure of the radio frequency module 22
  • FIG. 4 shows an example structure of the power control module 23
  • Fig. 5 shows a flowchart of an information processing method based on a near field communication device according to an embodiment of the present specification.
  • FIG. 1 shows a schematic diagram of an NFC system.
  • the system includes a terminal 11, a reader/writer 12, and an NFC device 13.
  • the terminal 11 is, for example, a computing processing device such as a computer and a mobile phone.
  • the reader/writer 12 transmits power to the NFC device 13 and transmits data by transmitting a 13.56MHz radio frequency.
  • the reader/writer 12 is a reader/writer device for the NFC device 13, which includes a power supply 121, a reader/writer module 122, a radio frequency module 123 and an antenna 124.
  • the power supply 121 provides energy to the radio frequency module 123
  • the read-write module 122 provides data to the radio frequency module 123.
  • the radio frequency module modulates the baseband signal and sends out a corresponding radio frequency through the antenna 124.
  • the NFC device 13 is, for example, an NFC tag or an NFC module in a mobile phone.
  • the NFC device 13 includes: an antenna 131, a radio frequency module 132, a processing module 133, and a storage module 134.
  • the reader/writer 12 After receiving the information from the NFC device 13, the reader/writer 12 transmits the information to the terminal 11 for service processing.
  • FIG. 1 is only schematic and is not used to limit the scope of the embodiments of this specification.
  • the device structure of the NFC device and the information processing method based on the NFC device according to the embodiment of the present specification will be described in detail below.
  • Fig. 2 shows a near field communication device 200 according to an embodiment of the present specification.
  • the device 200 includes: an antenna 21; a radio frequency module 22 connected to the antenna; a power control module 23; a CPU circuit 24; a logic circuit 25; and a storage module 26.
  • the antenna is known to those skilled in the art, for example, a 13.56MHz antenna.
  • the radio frequency module can output in accordance with the first type of near field communication protocol or the second type of near field communication protocol.
  • the first information wherein the communication distance of the second type of near field communication protocol is greater than a predetermined threshold, and the communication distance of the first type of near field communication protocol is less than the predetermined threshold, and the predetermined threshold is, for example, 10cm or 15cm
  • the first type of near field communication protocol is, for example, the ISO 14443A protocol, the ISO 14443B protocol, etc.
  • the second type of near field communication protocol is, for example, the ISO 15693 protocol.
  • the radio frequency module 22 includes a demodulator 221, a first decoder 222 and a second decoder 223.
  • the first decoder 222 corresponds to the ISO 14443A protocol
  • the second decoder 223 corresponds to the ISO 15693 protocol.
  • the demodulator 221 obtains a baseband signal after demodulating the signal induced by the antenna.
  • the baseband signal is usually a digital signal.
  • the signal in the predetermined period of the baseband signal (for example, the signal in the first period) is used to indicate the protocol identifier, so that the protocol corresponding to the baseband signal can be determined by reading the signal in the predetermined period of the baseband signal, and
  • the baseband signal is output to the corresponding decoder.
  • it can be preset that when the signal of the first cycle is high, it corresponds to the ISO 14443A protocol, and when the signal of the first cycle is low, it corresponds to the ISO 15693 protocol.
  • the protocol corresponding to the baseband signal can be determined and output to the corresponding decoder.
  • the structure of the radio frequency module 22 is not limited to this.
  • the radio frequency module 22 is not limited to only two decoders, but multiple decoders can be set to correspond to different protocols, for example, the radio frequency module 22 may also include a third decoder to correspond to the ISO 14443B protocol and so on.
  • the first type of near field communication protocol is not limited to the ISO 14443 (A/B) protocol
  • the second near field communication protocol is not limited to the ISO 15693 protocol, as long as the communication distance meets a predetermined standard.
  • the CPU circuit 24 and the logic circuit 25 are respectively used to process the first information conforming to the first type and the second type of near field communication protocol.
  • the CPU circuit 24 and the logic circuit 25 respectively pass through the power control module 23 is connected to the radio frequency module 22.
  • the power control module controls the CPU circuit 24 and the logic circuit 25 based on instructions from the reader so that the first information conforms to the second type of near field In the case of the communication protocol, the CPU circuit is suppressed.
  • the CPU circuit 24 and the logic circuit 25 are connected to the storage module 26 respectively.
  • the CPU circuit 24 includes complex arithmetic logic
  • the logic circuit 25 includes simple arithmetic logic.
  • the first information is a protocol package conforming to a specific protocol
  • the protocol package includes a protocol package identifier, such as "15693"
  • the switch control of the CPU circuit and the logic circuit can be determined according to the protocol package identifier of the protocol package.
  • the information from the reader includes a predetermined instruction.
  • the 01 instruction can be preset to correspond to the suppression of the CPU circuit, so that the power control module can perform the instruction after receiving the instruction from the radio frequency module 22 The corresponding operation.
  • FIG. 4 shows an example structure of the power control module 23.
  • the power control module 23 includes, for example, a first switch 231, a first switch logic circuit 232, a second switch 233, and a second switch logic circuit 234, where the first switch 231 and the first switch logic circuit 232 Are connected in series between the radio frequency unit 22 and the CPU circuit 24 for implementing power control of the CPU circuit, and the second switch 233 and the second switch logic circuit 234 are connected in series between the radio frequency unit 22 and the logic circuit 25 for implementing Control of logic circuits.
  • the first switch and the second switch are two MOSFET (metal-oxide-semiconductor field effect transistor) switches connected to the CPU circuit and the logic circuit, respectively.
  • MOSFET metal-oxide-semiconductor field effect transistor
  • the switching of the MOSFET can be controlled by a corresponding switch logic circuit.
  • the switch logic circuit can adjust the voltage of the corresponding CPU circuit or logic circuit based on the instruction from the reader to control the switch of the MOSFET.
  • the power of the CPU circuit can be cut off through the mos tube switch connected to the CPU circuit.
  • the power supply of the CPU circuit can be turned on through the mos tube connected to the CPU circuit, and at the same time, the power supply of the CPU circuit can be connected according to predetermined rules.
  • the MOS tube connected to the logic circuit turns on or off the power supply of the logic circuit.
  • the first switch and the second switch are two clock switching switches respectively connected to the CPU circuit and the logic circuit.
  • the input clock pulse of the clock switch can be controlled by the corresponding switch logic circuit.
  • the switch logic circuit can adjust the input clock pulse of each clock switch based on the instructions from the reader to control the clock switch. .
  • the clock switch connected to the CPU circuit can be used to reduce the clock frequency of the CPU circuit or turn off the clock.
  • the clock frequency of the CPU circuit can be restored through the clock switch connected to the CPU circuit.
  • the clock frequency of the CPU circuit can be restored according to predetermined rules through the The clock switch controls the clock frequency of the logic circuit (inhibit or not inhibit).
  • the second switch when the first information includes an indication corresponding to the ISO 14443A protocol, the second switch is used to reduce the clock frequency of the logic circuit, or turn off the clock of the logic circuit, In a case where the first information includes an indication corresponding to the ISO 15693 protocol, the clock frequency of the logic circuit is restored through the second switch.
  • the power control module 23 shown in FIG. 4 is only exemplary, and is not used to limit the scope of the embodiments of this specification.
  • the logic circuit does not need to be connected to the power control module 23, but can be connected to the power control module 23 as in the prior art.
  • the radio frequency module 22 is directly connected.
  • the power control module 23 only needs to include the first switch logic circuit 232 and the first switch 231 that are connected to the CPU circuit, that is, the power control module 23 only controls the CPU circuit, so that the near field communication device performs remote During communication, the inductive power is not consumed due to the operation of the CPU circuit, so there is sufficient power for long-distance communication.
  • the radio frequency module 22 passes through the power control module 23, for example, it will conform to the first type of near field communication protocol.
  • the CPU circuit selects a corresponding protocol for processing the first information based on the protocol identifier of the first information.
  • the near field communication device is, for example, an anti-counterfeiting electronic tag, so that anti-counterfeiting information is stored in the storage module 26, and the specific process of anti-counterfeiting through the anti-counterfeiting label will be described in detail below.
  • Fig. 5 shows a flowchart of an information processing method based on a near field communication device according to an embodiment of the present specification.
  • the near field communication device is the device shown in Fig. 2, and the method includes:
  • Step S502 receiving first information from the reader through the radio frequency module based on the induction of the antenna;
  • Step S504 based on the instructions included in the first information, control the CPU circuit through the power control module so that the communication distance of the first near field communication protocol is greater than a predetermined threshold.
  • the CPU circuit responds to information processing of the first information.
  • the near field communication device is, for example, the near field communication device shown in FIG. 2, which includes two control circuits, namely a CPU circuit and a logic circuit, so that the two control circuits can be selected based on the received information to perform information deal with.
  • step S502 based on the induction of the antenna, first information is received from the reader through the radio frequency module.
  • the radio frequency module converts the radio frequency induced by the antenna into binary data as the first information.
  • the binary data conforms to different protocol standards.
  • the relevant description of the radio frequency module 22 above please refer to the relevant description of the radio frequency module 22 above, which will not be repeated here.
  • the NFC device is an anti-counterfeiting electronic tag
  • both the CPU circuit and the logic circuit include corresponding encryption and decryption units.
  • the encryption and decryption units have different security levels, that is, the CPU circuit has a high security level.
  • the first information sent to the tag via radio frequency meets the ISO 15693 protocol, that is, the first information is a 15693 protocol packet
  • the protocol packet includes the protocol identifier of the 15693 protocol
  • the first message also includes a read command.
  • the first information may further include a predetermined instruction indicating the use of the logic circuit.
  • the first information sent to the tag via radio frequency meets the ISO 14443 protocol, that is, the first information is the 14443 protocol packet
  • the protocol packet includes the protocol identifier of the 14443 protocol, and in addition to the read command, the first information may also include a random number used in asymmetric encryption.
  • the first information may further include a predetermined instruction instructing to use the CPU circuit.
  • step S504 based on the instruction included in the first information, the CPU circuit is controlled by the power control module so as to suppress when the communication distance of the first near field communication protocol is greater than a predetermined threshold.
  • the CPU circuit responds to information processing of the first information.
  • the indication is, for example, the protocol package identifier described above or a predetermined instruction.
  • the power control module includes a first clock switching switch, and the first clock switching switch is connected to the CPU circuit, wherein, based on the instructions included in the first information, the power supply
  • the control module controlling the CPU circuit includes, in the case that the communication distance of the first near field communication protocol is greater than a predetermined threshold and the clock frequency provided by the first clock switch is the operating frequency, making the first A clock switch provides a reduced clock frequency or stops providing a clock signal.
  • the first clock switch is made to recover the clock frequency provided Is the operating frequency so that the CPU circuit performs information processing in response to the first information.
  • the method further includes, based on the instruction included in the first information, controlling the logic circuit through the power control module to enable communication in the first near field communication protocol In the case where the distance is less than the predetermined threshold, information processing of the logic circuit in response to the first information is suppressed.
  • the power control module further includes a second clock switch, the second clock switch is connected to the logic circuit, wherein, based on the instructions included in the first information, the power control module
  • the control by the logic circuit further includes, when the communication distance of the first near field communication protocol is less than the predetermined threshold and the clock frequency of the second clock switching switch is the operating frequency, causing the second clock to switch The switch provides a reduced clock frequency or stops providing a clock signal.
  • the clock provided by the second clock switching switch is The frequency is restored to the operating frequency, so that the logic circuit performs information processing in response to the first information.
  • the power control module includes a mos tube switch, and the mos tube switch is connected to the CPU circuit, wherein, based on the instruction included in the first information, the power control module controls the
  • the control performed by the CPU circuit includes, when the communication distance of the first near field communication protocol is greater than a predetermined threshold, and the MOSFET switch is in a connected state, switching the MOSFET switch to an off state. In the case that the communication distance of the first near field communication protocol is less than the predetermined threshold and the MOSFET switch is in the off state, the MOSFET switch is switched to the on state.
  • the device is an anti-counterfeiting electronic tag
  • the storage module stores anti-counterfeiting data and a key
  • the CPU circuit and the logic circuit include an encryption and decryption unit, wherein the first information
  • the logic circuit uses the key to encrypt the anti-counterfeiting data to obtain the encrypted anti-counterfeiting data as the second information.
  • the key is a symmetric key, which is generated internally by the anti-counterfeiting electronic tag and registered with an authority, for example.
  • the method further includes, after acquiring the second information, sending the second information to the reader/writer through the radio frequency module and the antenna. Therefore, after receiving the second information through the reader, the third party can call the key management service of the authority to verify the authenticity of the second information. That is, this method is an online verification method.
  • the storage module further stores a private key and a first digital signature of the public key by an authority, and the first information includes a first random number, wherein the first information includes
  • the CPU circuit uses the private key to sign the anti-counterfeiting data and the random number to obtain a second digital signature, The anti-counterfeiting data, the first digital signature, and the second digital signature are used as second information.
  • the method further includes sending the second information to the reader/writer through the radio frequency module and the antenna.
  • the third party After the third party receives the second information through the reader, it can first use the public key of the authority obtained in advance to verify the first digital signature, thereby verifying the authenticity of the public key in the NFC device, and use the NFC The device public key verifies the second digital signature, thereby verifying the authenticity of the anti-counterfeiting data. That is, this method is an offline verification method.
  • the NFC device may, for example, send the second information to the reader/writer through load modulation technology.
  • the NFC device may also actively send the second information to the reader/writer by emitting radio frequency.
  • the power supply control module controls the power supply of the CPU circuit according to a specific protocol, so that the CPU circuit is inhibited during long-distance communication, so that sufficient power is available for long-distance communication. , Which can carry out long-distance communication, but also has a high security level, so it has a higher applicability.
  • the steps of the method or algorithm described in the embodiments disclosed in this document can be implemented by hardware, a software module executed by a processor, or a combination of the two.
  • the software module can be placed in random access memory (RAM), internal memory, read-only memory (ROM), electrically programmable ROM, electrically erasable programmable ROM, registers, hard disks, removable disks, CD-ROMs, or all areas in the technical field. Any other known storage medium.

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Abstract

本说明书实施例提供了一种近场通信装置及基于其的信息处理方法，所述装置包括：天线；与所述天线连接的射频模块，其中，所述射频模块基于来自所述天线的射频信号，输出符合第一近场通信协议的第一信息；CPU电路；以及电源控制模块，其中，所述CPU电路通过所述电源控制模块与所述射频模块连接，所述电源控制模块基于所述第一信息中包括的指示对所述CPU电路进行控制，以使得在所述第一近场通信协议的通信距离大于预定阈值的情况中抑制所述CPU电路。

Description

一种NFC装置及基于其的信息处理方法 技术领域
本说明书实施例涉及近场通信技术领域，更具体地，涉及一种NFC装置及基于其的信息处理方法。
背景技术
近来，近场通信技术(NFC)得到越来越多的应用，如用于防伪、用于集成到手机中以用于刷卡、支付等。NFC是在RFID(无线射频技术)的基础上发展而来，其可在地理位置相近的两个物体之间进行信号传输。NFC是一种短距高频的 无线电技术，在13.56MHz频率运行于20厘米距离内,相对于RFID来说具有成本低、带宽高、能耗低等特点。目前，NFC在ISO 18092、ECMA 340和ETSI TS 102 190协议框架下推动标准化，同时也兼容应用广泛的ISO 14443、Type-A、ISO 15693、B以及Felica等协议标准。其中，ISO 15693协议有着比ISO 14443协议更远的通信距离，大能量时可以到1.5m，因此在工厂供应链管理上有优势。IOS 14443标准由于通信距离近<10cm，在银行金融级别应用有着不容易被中间人攻击的安全特性。一般银行相关的NFC卡都采用ISO 14443协议。在NFC卡中，包括Cpu电路的NFC卡相对于包括逻辑电路的NFC卡有着成本高功耗高的缺点，不能支持远距离通信。但是前置可以跑SM2等非对称国密算法，有着更高安全级别的特性。
因此，需要一种更有效的近场通信技术。
发明内容
本说明书实施例旨在提供一种更有效的近场通信技术，以解决现有技术中的不足。
为实现上述目的，本说明书一个方面提供一种近场通信装置，包括：天线；与所述天线连接的射频模块，其中，所述射频模块基于来自所述天线的射频信号，输出符合第一近场通信协议的第一信息；CPU电路；以及电源控制模块，
其中，所述CPU电路通过所述电源控制模块与所述射频模块连接，所述电源控制模块基于所述第一信息中包括的指示对所述CPU电路进行控制，以使得在所述第一近场通信协议的通信距离大于预定阈值的情况中抑制所述CPU电路。
在一个实施例中，所述指示为协议标识或特定指令。
在一个实施例中，所述装置还包括逻辑电路，所述逻辑电路通过所述电源控制模块与所述射频模块连接，其中，所述电源控制模块还使得在所述第一近场通信协议的通信距离小于所述预定阈值的情况中抑制所述逻辑电路。
在一个实施例中，所述电源控制模块包括mos管开关或时钟切换开关。
在一个实施例中，所述装置还包括存储模块，其中，所述CPU电路和所述逻辑电路分别与所述存储模块连接，其中，所述装置为防伪电子标签，所述存储模块中存储有防伪信息。
在一个实施例中，所述射频模块包括解调器、以及分别与所述解调器连接的第一译码器和第二译码器，所述第一译码器和第二译码器分别与两种近场通信协议相对应，所述解调器基于其解调的基带信号中包括的协议标识，将该基带信号输出给相应的译码器，其中，所述两种近场通信协议中的一种近场通信协议的通信距离小于所述预定阈值，另一种近场通信协议的通信距离大于所述预定阈值。
在一个实施例中，所述两种近场通信协议分别为ISO 14443A协议和ISO 15693协议。
本说明书另一方面提供一种基于近场通信装置的信息处理方法，所述近场通信装置为上述近场通信装置，所述方法包括：
基于所述天线的感应，通过所述射频模块从读写器接收第一信息；以及
基于所述第一信息中包括的指示，通过所述电源控制模块对所述CPU电路进行控制，以使得在所述第一近场通信协议的通信距离大于预定阈值的情况中抑制所述CPU电路响应于所述第一信息的信息处理。
在一个实施例中，所述电源控制模块中包括第一时钟切换开关，所述第一时钟切换开关与所述CPU电路连接，其中，基于所述第一信息中包括的指示，通过所述电源控制模块对所述CPU电路进行控制包括，在所述第一近场通信协议的通信距离大于预定阈值、且所述第一时钟切换开关提供的时钟频率为工作频率的情况中，使得所述第一时钟切换开关提供降低的时钟频率，或停止提供时钟信号。
在一个实施例中，基于所述第一信息中包括的指示，通过所述电源控制模块对所述CPU电路进行控制包括，在所述第一近场通信协议的通信距离小于预定阈值、且所述第一时钟切换开关提供的时钟频率不为工作频率的情况中，使得所述第一时钟切换开关将 提供的时钟频率恢复为所述工作频率，以使得所述CPU电路响应于所述第一信息进行信息处理。
在一个实施例中，所述方法还包括，基于所述第一信息中包括的指示，通过所述电源控制模块对所述逻辑电路进行控制，以使得在所述第一近场通信协议的通信距离小于所述预定阈值的情况中抑制所述逻辑电路响应于所述第一信息的信息处理。
在一个实施例中，所述电源控制模块中还包括第二时钟切换开关，所述第二时钟切换开关与所述逻辑电路连接，其中，基于所述第一信息中包括的指示，通过所述电源控制模块对所述逻辑电路进行控制还包括，在所述第一近场通信协议的通信距离小于所述预定阈值、且所述第二时钟切换开关的时钟频率为工作频率的情况中，使得所述第二时钟切换开关提供降低的时钟频率，或停止提供时钟信号。
在一个实施例中，基于所述第一信息中包括的指示，通过所述电源控制模块对所述逻辑电路进行控制还包括，在所述第一近场通信协议的通信距离大于所述预定阈值、且所述第二时钟切换开关提供的时钟频率不为工作频率的情况中，使得所述第二时钟切换开关将提供的时钟频率恢复为所述工作频率，以使得所述逻辑电路响应于所述第一信息进行信息处理。
在一个实施例中，所述电源控制模块中包括mos管开关，所述mos管开关与所述CPU电路连接，其中，基于所述第一信息中包括的指示，通过所述电源控制模块对所述CPU电路进行控制包括，在所述第一近场通信协议的通信距离大于预定阈值、且所述mos管开关为连通状态的情况中，使得所述mos管开关切换为断开状态。
在一个实施例中，基于所述第一信息中包括的指示，通过所述电源控制模块对所述CPU电路进行控制包括，在所述第一近场通信协议的通信距离小于所述预定阈值、且所述mos管开关为断开状态的情况中，使得所述mos管开关切换为连通状态。
在一个实施例中，所述存储模块中存储有防伪数据和密钥，其中，使得所述逻辑电路响应于所述第一信息进行信息处理包括，使得所述逻辑电路使用所述密钥对所述防伪数据加密，以获取加密的防伪数据作为第二信息，所述方法还包括，通过所述射频模块和所述天线向所述读写器发送所述第二信息。
在一个实施例中，所述存储模块中还存储有私钥、公钥和权威机构对公钥的第一数字签名，所述第一信息中包括第一随机数，其中，使得所述CPU电路响应于所述第一信息进行信息处理包括，使得所述CPU电路使用所述私钥对所述防伪数据和所述随机 数进行签名以获取第二数字签名，以将所述防伪数据、所述公钥、所述第一数字签名和所述第二数字签名作为第二信息，所述方法还包括，通过所述射频模块和所述天线向所述读写器发送所述第二信息。
在一个实施例中，其中，基于所述天线的感应，通过所述射频模块从读写器接收第一信息包括，通过所述解调器将由所述天线感应的信号解调为基带信号，基于所述基带信号中包括的协议标识将该基带信号输出给相应的译码器，以及，通过所述相应的译码器将所述基带信号转换为二进制数据作为第一信息。
通过根据本说明书实施例的NFC装置，既可以进行远距离通信，又具有高安全级别，因此具有更高的适用性。
附图说明
通过结合附图描述本说明书实施例，可以使得本说明书实施例更加清楚：
图1示出NFC系统的示意图；
图2示出根据本说明书实施例的一种近场通信装置200；
图3示出了射频模块22的示例结构；
图4示出电源控制模块23的示例结构；
图5示出根据本说明书实施例的一种基于近场通信装置的信息处理方法流程图。
具体实施方式
下面将结合附图描述本说明书实施例。
图1示出NFC系统的示意图。如图1中所述，该系统包括终端11、读写器12和NFC装置13。终端11例如为计算机、手机等计算处理装置。读写器12通过发射13.56MHz射频而向NFC装置13供能并传输数据。读写器12为用于NFC装置13的读写装置，其中包括电源121、读写模块122、射频模块123和天线124。电源121向射频模块123提供能量，读写模块122向射频模块123提供数据，射频模块对基带信号进行调制之后通过天线124发出相应的射频。NFC装置13例如为NFC标签，或者为手机中的NFC模块等。NFC装置13中包括：天线131、射频模块132、处理模块133和存储模块134。NFC装置13在由读写器12供能之后，通过射频模块132从接收到的射频中解析数据， 并基于该数据和存储模块134中存储数据在处理模块133中进行数据处理，并基于处理结果对读写器12发送信息。读写器12在从NFC装置13接收到信息之后，将该信息传输给终端11以用于业务处理。
可以理解，图1所示NFC系统仅为示意性的，而不用于限制本说明书实施例的范围。下文将详细描述根据本说明书实施例的NFC装置的装置结构及基于该NFC装置的信息处理方法。
图2示出根据本说明书实施例的一种近场通信装置200。如图2所示，装置200包括：天线21；与所述天线连接的射频模块22；电源控制模块23；CPU电路24；逻辑电路25；以及存储模块26。
其中，所述天线如本领域技术人员所知例如为13.56MHz的天线，所述射频模块基于来自所述天线的射频信号，可以输出符合第一类近场通信协议或第二类近场通信协议的第一信息，其中，所述第二类近场通信协议的通信距离大于预定阈值，所述第一类近场通信协议的通信距离小于所述预定阈值，所述预定阈值例如为10cm或15cm等，所述第一类近场通信协议例如为ISO 14443A协议、ISO 14443B协议等，所述第二类近场通信协议例如为ISO 15693协议等。图3示出了射频模块22的示例结构。如图3中所示，射频模块22包括解调器221、第一译码器222和第二译码器223。其中，例如，第一译码器222与ISO 14443A协议对应，第二译码器223与ISO 15693协议对应。解调器221在对由天线感应的信号进行解调之后，获得基带信号，该基带信号通常为数字信号。该基带信号的例如预定周期内的信号(例如第1个周期内的信号)用于指示协议标识，从而可通过读取该基带信号的预定周期内的信号确定该基带信号对应的协议，并将该基带信号输出给相应的译码器。例如，可预设为，当第1周期的信号为高电平时对应于ISO 14443A协议，当第1周期的信号为低电平时对应于ISO 15693协议，从而，通过读取该第1周期电平，可确定该基带信号对应的协议，从而输出给相应的译码器。可以理解，所述射频模块22的结构不限于此，例如，射频模块22中不限于仅设定两个解码器，而可以设定多个译码器以对应于不同的协议，例如，射频模块22中还可以包括第三译码器以对应于ISO 14443B协议等等。
可以理解，所述第一类近场通信协议不限于为ISO 14443(A/B)协议，所述第二近场通信协议不限于为ISO 15693协议，只要其通信距离符合预定标准即可。
所述CPU电路24和所述逻辑电路25分别用于处理符合第一类和第二类近场通信协议的第一信息，所述CPU电路24和所述逻辑电路25分别通过所述电源控制模块23与 所述射频模块22连接，所述电源控制模块基于来自读写器的指示对所述CPU电路24和所述逻辑电路25进行控制，以使得在所述第一信息符合第二类近场通信协议的情况中抑制所述CPU电路。另外，所述CPU电路24和所述逻辑电路25分别与所述存储模块26连接。其中，所述CPU电路24包括复杂运算逻辑，所述逻辑电路25包括简单运算逻辑。
在一个实施例中，所述第一信息为符合特定协议的协议包，该协议包中包括协议包标识，例如“15693”，从而，所述电源控制模块23在从射频模块22接收到该协议包之后，可根据该协议包的协议包标识确定对CPU电路和逻辑电路的开关控制。在一个实施例中，来自读写器的信息中包括预定指令，例如，可预设01指令对应于抑制CPU电路，从而，所述电源控制模块在从射频模块22接收到该指令后，可进行相应的操作。
图4示出电源控制模块23的示例结构。如图中所示，电源控制模块23中例如包括第一开关231、第一开关逻辑电路232、第二开关233以及第二开关逻辑电路234，其中，第一开关231和第一开关逻辑电路232串联连接在射频单元22与CPU电路24之间，用于实施对CPU电路的电源控制，第二开关233和第二开关逻辑电路234串联连接在射频单元22与逻辑电路25之间，用于实施对逻辑电路的控制。
在一个实施例中，所述第一开关和第二开关为与CPU电路和逻辑电路分别连接的两个mos管(金属-氧化物-半导体场效应晶体管)开关。在该情况中，可通过相应的开关逻辑电路控制mos管的开关，例如，该开关逻辑电路可基于来自读写器的指示调节相应的CPU电路或逻辑电路的电压，从而控制mos管开关。例如，在基于来自读写器的指示，确定通过ISO 15693协议进行通信的情况中，可通过与CPU电路连接的mos管开关切断CPU电路的电源。在基于来自读写器的指示，确定通过ISO 14443(A/B)协议进行通信的情况中，可通过与CPU电路连接的mos管接通CPU电路的电源，同时，可根据预定规则，通过与逻辑电路连接的mos管接通或断开该逻辑电路的电源。
在一个实施例中，所述第一开关和第二开关为与CPU电路和逻辑电路分别连接的两个时钟切换开关。在该情况中，可通过相应的开关逻辑电路控制时钟切换开关的输入时钟脉冲，例如，该开关逻辑电路可基于来自读写器的指示调节各个时钟切换开关的输入时钟脉冲，从而控制时钟切换开关。例如，在基于来自读写器的指示，确定通过ISO 15693协议进行通信的情况中，可通过与CPU电路连接的时钟切换开关降低CPU电路的时钟频率或关闭时钟。在基于来自读写器的指示，确定通过ISO 14443协议进行通信的情况中，可通过与CPU电路连接的时钟切换开关恢复CPU电路的时钟频率，同时，可根据 预定规则，通过与逻辑电路连接的时钟切换开关控制该逻辑电路的时钟频率(抑制、或者不抑制)。
在一个实施例中，在所述第一信息中包括与ISO 14443A协议对应的指示的情况中，通过所述第二开关降低所述逻辑电路的时钟频率，或关闭所述逻辑电路的时钟，在所述第一信息中包括与ISO 15693协议对应的指示的情况中，通过所述第二开关恢复所述逻辑电路的时钟频率。
可以理解，图4所示的电源控制模块23仅是示例性的，并不用于限制本说明书实施例的范围。例如，在仅在远距离通信时抑制CPU、而在近距离通信时不对逻辑电路进行控制的情况中，逻辑电路并不需要与电源控制模块23连接，而是可以如现有技术中那样地与射频模块22直接连接。从而电源控制模块23中仅需要包括与CPU电路连接的第一开关逻辑电路232和第一开关231，即，电源控制模块23仅对CPU电路进行控制，从而使得该近场通信装置在进行远距离通信时不会由于CPU电路的运行消耗感应的电源，从而具有充足的电源用于进行远距离通信。
在所述第一类近场通信协议和所述第二类近场通信协议分别包括多个协议的情况中，当射频模块22通过所述电源控制模块23将例如符合第一类近场通信协议的第一信息发送给CPU电路的情况中，所述CPU电路基于所述第一信息的协议标识选择相应的协议以用于处理该第一信息。
该近场通信装置例如为防伪电子标签，从而在所述存储模块26中存储有防伪信息，通过该防伪标签进行防伪的具体过程将在下文详细描述。
图5示出根据本说明书实施例的一种基于近场通信装置的信息处理方法流程图，所述近场通信装置为图2所示装置，所述方法包括：
步骤S502，基于所述天线的感应，通过所述射频模块从读写器接收第一信息；
步骤S504，基于所述第一信息中包括的指示，通过所述电源控制模块对所述CPU电路进行控制，以使得在所述第一近场通信协议的通信距离大于预定阈值的情况中抑制所述CPU电路响应于所述第一信息的信息处理。
所述近场通信装置例如为图2所示近场通信装置，其由于包括两个控制电路，即CPU电路和逻辑电路，从而可基于收到的信息进行对两个控制电路的选择以进行信息处理。
首先，在步骤S502，基于所述天线的感应，通过所述射频模块从读写器接收第一信息。
所述射频模块将由天线感应的射频转换为二进制数据作为第一信息。其中，根据读写器使用的不同的近场通信协议，该二进制数据符合不同的协议标准。该步骤的详细过程可参考上文中对射频模块22的相关描述，在此不再赘述。
在一个实施例中，所述NFC装置为防伪电子标签，所述CPU电路和逻辑电路中都包括相应的加解密单元，所述加解密单元具有不同的安全级别，即，CPU电路的安全级别高于逻辑电路的安全级别。在一个实施例中，当使用符合ISO 15693协议的读写器对该防伪标签进行读操作时，通过射频向该标签发出的第一信息满足ISO 15693协议，即该第一信息为15693协议包，在该协议包中包括15693协议的协议标识，并且该第一信息中还包括读指令。在一个实施例中，该第一信息中还可以包括指示使用逻辑电路的预定指令。
在一个实施例中，当使用符合ISO 14443协议的读写器对该防伪标签进行读操作时，通过射频向该标签发出的第一信息满足ISO 14443协议，即该第一信息为14443协议包，在该协议包中包括14443协议的协议标识，并且该第一信息中除了包括读指令之外，还可以包括用于在非对称加密中使用的随机数。在一个实施例中，该第一信息中还可以包括指示使用CPU电路的预定指令。
在步骤S504，基于所述第一信息中包括的指示，通过所述电源控制模块对所述CPU电路进行控制，以使得在所述第一近场通信协议的通信距离大于预定阈值的情况中抑制所述CPU电路响应于所述第一信息的信息处理。
所述指示例如为上文中所述的协议包标识或者预定指令等。
在一个实施例中，所述电源控制模块中包括第一时钟切换开关，所述第一时钟切换开关与所述CPU电路连接，其中，基于所述第一信息中包括的指示，通过所述电源控制模块对所述CPU电路进行控制包括，在所述第一近场通信协议的通信距离大于预定阈值、且所述第一时钟切换开关提供的时钟频率为工作频率的情况中，使得所述第一时钟切换开关提供降低的时钟频率，或停止提供时钟信号。在所述第一近场通信协议的通信距离小于预定阈值、且所述第一时钟切换开关提供的时钟频率不为工作频率的情况中，使得所述第一时钟切换开关将提供的时钟频率恢复为所述工作频率，以使得所述CPU电路响应于所述第一信息进行信息处理。
在一个实施例中，所述方法还包括，基于所述第一信息中包括的指示，通过所述电源控制模块对所述逻辑电路进行控制，以使得在所述第一近场通信协议的通信距离小于 所述预定阈值的情况中抑制所述逻辑电路响应于所述第一信息的信息处理。
所述电源控制模块中还包括第二时钟切换开关，所述第二时钟切换开关与所述逻辑电路连接，其中，基于所述第一信息中包括的指示，通过所述电源控制模块对所述逻辑电路进行控制还包括，在所述第一近场通信协议的通信距离小于所述预定阈值、且所述第二时钟切换开关的时钟频率为工作频率的情况中，使得所述第二时钟切换开关提供降低的时钟频率，或停止提供时钟信号。在所述第一近场通信协议的通信距离大于所述预定阈值、且所述第二时钟切换开关提供的时钟频率不为工作频率的情况中，使得所述第二时钟切换开关将提供的时钟频率恢复为所述工作频率，以使得所述逻辑电路响应于所述第一信息进行信息处理。
在一个实施例中，所述电源控制模块中包括mos管开关，所述mos管开关与所述CPU电路连接，其中，基于所述第一信息中包括的指示，通过所述电源控制模块对所述CPU电路进行控制包括，在所述第一近场通信协议的通信距离大于预定阈值、且所述mos管开关为连通状态的情况中，使得所述mos管开关切换为断开状态。在所述第一近场通信协议的通信距离小于所述预定阈值、且所述mos管开关为断开状态的情况中，使得所述mos管开关切换为连通状态。
在一个实施例中，所述装置为防伪电子标签，所述存储模块中存储有防伪数据和密钥，所述CPU电路和所述逻辑电路中包括加解密单元，其中，在所述第一信息中指示使用例如ISO 15693协议的情况中，基于所述电源控制单元的控制，使得所述逻辑电路使用所述密钥对所述防伪数据加密，以获取加密的防伪数据作为所述第二信息。其中，所述密钥为对称密钥，其例如由该防伪电子标签内部生成并在权威机构注册。所述方法还包括，在获取所述第二信息之后，通过所述射频模块和所述天线向所述读写器发送所述第二信息。从而，第三方在通过读写器接收到该第二信息之后，可调用权威机构的密钥管理服务，从而验证第二信息的真实性。即，该方法为在线验证的方法。
在一个实施例中，所述存储模块中还存储有私钥和权威机构对公钥的第一数字签名，所述第一信息中包括第一随机数，其中，在所述第一信息中包括与例如ISO 14443协议对应的指示的情况中，基于所述电源控制单元的控制，使得所述CPU电路使用所述私钥对所述防伪数据和所述随机数进行签名以获取第二数字签名，以将所述防伪数据、所述第一数字签名和所述第二数字签名作为第二信息。所述方法还包括，通过所述射频模块和所述天线向所述读写器发送所述第二信息。第三方在通过读写器接收到该第二信息之后，可首先使用预先获取的权威机构的公钥对第一数字签名进行验证，从而验证该 NFC装置中公钥的真实性，并使用该NFC装置公钥对第二数字签名进行验证，从而验证所述防伪数据的真实性。即，该方法为离线验证的方法。
所述NFC装置例如可通过负载调制技术将第二信息发送给读写器。在所述NFC装置包括电源的情况中，该NFC装置也可以通过发出射频而主动向读写器发出第二信息。
在根据本说明书实施例的NFC装置中，通过利用电源控制模块根据具体的协议控制CPU电路的电源，从而使得在进行远距离通信时抑制CPU电路，从而使得在进行远距离通信时具有充足的电能，从而既可以进行远距离通信，又具有高安全级别，因此具有更高的适用性。
需要理解，本文中的“第一”，“第二”等描述，仅仅为了描述的简单而对相似概念进行区分，并不具有其他限定作用。
本说明书中的各个实施例均采用递进的方式描述，各个实施例之间相同相似的部分互相参见即可，每个实施例重点说明的都是与其他实施例的不同之处。尤其，对于系统实施例而言，由于其基本相似于方法实施例，所以描述的比较简单，相关之处参见方法实施例的部分说明即可。
上述对本说明书特定实施例进行了描述。其它实施例在所附权利要求书的范围内。在一些情况下，在权利要求书中记载的动作或步骤可以按照不同于实施例中的顺序来执行并且仍然可以实现期望的结果。另外，在附图中描绘的过程不一定要求示出的特定顺序或者连续顺序才能实现期望的结果。在某些实施方式中，多任务处理和并行处理也是可以的或者可能是有利的。
本领域普通技术人员应该还可以进一步意识到，结合本文中所公开的实施例描述的各示例的单元及算法步骤，能够以电子硬件、计算机软件或者二者的结合来实现，为了清楚地说明硬件和软件的可互换性，在上述说明中已经按照功能一般性地描述了各示例的组成及步骤。这些功能究竟以硬件还是软件方式来执轨道，取决于技术方案的特定应用和设计约束条件。本领域普通技术人员可以对每个特定的应用来使用不同方法来实现所描述的功能，但是这种实现不应认为超出本申请的范围。
结合本文中所公开的实施例描述的方法或算法的步骤可以用硬件、处理器执轨道的软件模块，或者二者的结合来实施。软件模块可以置于随机存储器(RAM)、内存、只读存储器(ROM)、电可编程ROM、电可擦除可编程ROM、寄存器、硬盘、可移动磁盘、CD-ROM、或技术领域内所公知的任意其它形式的存储介质中。
以上所述的具体实施方式，对本发明的目的、技术方案和有益效果进行了进一步详细说明，所应理解的是，以上所述仅为本发明的具体实施方式而已，并不用于限定本发明的保护范围，凡在本发明的精神和原则之内，所做的任何修改、等同替换、改进等，均应包含在本发明的保护范围之内。

Claims (18)

  1. 一种近场通信装置，包括：天线；与所述天线连接的射频模块，其中，所述射频模块基于来自所述天线的射频信号，输出符合第一近场通信协议的第一信息；CPU电路；以及电源控制模块，
    其中，所述CPU电路通过所述电源控制模块与所述射频模块连接，所述电源控制模块基于所述第一信息中包括的指示对所述CPU电路进行控制，以使得在所述第一近场通信协议的通信距离大于预定阈值的情况中抑制所述CPU电路。
  2. 根据权利要求1所述的装置，其中，所述指示为协议标识或特定指令。
  3. 根据权利要求1所述的装置，还包括逻辑电路，所述逻辑电路通过所述电源控制模块与所述射频模块连接，其中，所述电源控制模块还使得在所述第一近场通信协议的通信距离小于所述预定阈值的情况中抑制所述逻辑电路。
  4. 根据权利要求1所述的装置，其中，所述电源控制模块包括mos管开关或时钟切换开关。
  5. 根据权利要求3所述的装置，还包括存储模块，其中，所述CPU电路和所述逻辑电路分别与所述存储模块连接，其中，所述装置为防伪电子标签，所述存储模块中存储有防伪信息。
  6. 根据权利要求1所述的装置，其中，所述射频模块包括解调器、以及分别与所述解调器连接的第一译码器和第二译码器，所述第一译码器和第二译码器分别与两种近场通信协议相对应，所述解调器基于其解调的基带信号中包括的协议标识，将该基带信号输出给相应的译码器，其中，所述两种近场通信协议中的一种近场通信协议的通信距离小于所述预定阈值，另一种近场通信协议的通信距离大于所述预定阈值。
  7. 根据权利要求6所述的装置，其中所述两种近场通信协议分别为ISO 14443A协议和ISO 15693协议。
  8. 一种基于近场通信装置的信息处理方法，所述近场通信装置为如权利要求1所述的近场通信装置，所述方法包括：
    基于所述天线的感应，通过所述射频模块从读写器接收第一信息；以及
    基于所述第一信息中包括的指示，通过所述电源控制模块对所述CPU电路进行控制，以使得在所述第一近场通信协议的通信距离大于预定阈值的情况中抑制所述CPU电路响应于所述第一信息的信息处理。
  9. 根据权利要求8所述的方法，其中，所述电源控制模块中包括第一时钟切换开关，所述第一时钟切换开关与所述CPU电路连接，其中，基于所述第一信息中包括的指示， 通过所述电源控制模块对所述CPU电路进行控制包括，在所述第一近场通信协议的通信距离大于预定阈值、且所述第一时钟切换开关提供的时钟频率为工作频率的情况中，使得所述第一时钟切换开关提供降低的时钟频率，或停止提供时钟信号。
  10. 根据权利要求9所述的方法，其中，基于所述第一信息中包括的指示，通过所述电源控制模块对所述CPU电路进行控制包括，在所述第一近场通信协议的通信距离小于预定阈值、且所述第一时钟切换开关提供的时钟频率不为工作频率的情况中，使得所述第一时钟切换开关将提供的时钟频率恢复为所述工作频率，以使得所述CPU电路响应于所述第一信息进行信息处理。
  11. 根据权利要求8所述的方法，其中，所述装置为如权利要求3所述的装置，所述方法还包括，基于所述第一信息中包括的指示，通过所述电源控制模块对所述逻辑电路进行控制，以使得在所述第一近场通信协议的通信距离小于所述预定阈值的情况中抑制所述逻辑电路响应于所述第一信息的信息处理。
  12. 根据权利要求11所述的方法，其中，所述电源控制模块中还包括第二时钟切换开关，所述第二时钟切换开关与所述逻辑电路连接，其中，基于所述第一信息中包括的指示，通过所述电源控制模块对所述逻辑电路进行控制还包括，在所述第一近场通信协议的通信距离小于所述预定阈值、且所述第二时钟切换开关的时钟频率为工作频率的情况中，使得所述第二时钟切换开关提供降低的时钟频率，或停止提供时钟信号。
  13. 根据权利要求12所述的方法，其中，基于所述第一信息中包括的指示，通过所述电源控制模块对所述逻辑电路进行控制还包括，在所述第一近场通信协议的通信距离大于所述预定阈值、且所述第二时钟切换开关提供的时钟频率不为工作频率的情况中，使得所述第二时钟切换开关将提供的时钟频率恢复为所述工作频率，以使得所述逻辑电路响应于所述第一信息进行信息处理。
  14. 根据权利要求8所述的方法，所述电源控制模块中包括mos管开关，所述mos管开关与所述CPU电路连接，其中，基于所述第一信息中包括的指示，通过所述电源控制模块对所述CPU电路进行控制包括，在所述第一近场通信协议的通信距离大于预定阈值、且所述mos管开关为连通状态的情况中，使得所述mos管开关切换为断开状态。
  15. 根据权利要求14所述的方法，其中，基于所述第一信息中包括的指示，通过所述电源控制模块对所述CPU电路进行控制包括，在所述第一近场通信协议的通信距离小于所述预定阈值、且所述mos管开关为断开状态的情况中，使得所述mos管开关切换为连通状态。
  16. 根据权利要求13所述的方法，其中，所述装置为如权利要求5所述的装置，所述存储模块中存储有防伪数据和密钥，其中，使得所述逻辑电路响应于所述第一信息进行信息处理包括，使得所述逻辑电路使用所述密钥对所述防伪数据加密，以获取加密的防伪数据作为第二信息，所述方法还包括，通过所述射频模块和所述天线向所述读写器发送所述第二信息。
  17. 根据权利要求10所述的方法，其中，所述装置为如权利要求5所述的装置，所述存储模块中还存储有私钥、公钥和权威机构对公钥的第一数字签名，所述第一信息中包括第一随机数，其中，使得所述CPU电路响应于所述第一信息进行信息处理包括，使得所述CPU电路使用所述私钥对所述防伪数据和所述随机数进行签名以获取第二数字签名，以将所述防伪数据、所述公钥、所述第一数字签名和所述第二数字签名作为第二信息，所述方法还包括，通过所述射频模块和所述天线向所述读写器发送所述第二信息。
  18. 根据权利要求8所述的方法，其中，所述装置为如权利要求6所述的装置，其中，基于所述天线的感应，通过所述射频模块从读写器接收第一信息包括，通过所述解调器将由所述天线感应的信号解调为基带信号，基于所述基带信号中包括的协议标识将该基带信号输出给相应的译码器，以及，通过所述相应的译码器将所述基带信号转换为二进制数据作为第一信息。
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