CN202854866U - NFC secret key card with USB interface - Google Patents
NFC secret key card with USB interface Download PDFInfo
- Publication number
- CN202854866U CN202854866U CN 201220513193 CN201220513193U CN202854866U CN 202854866 U CN202854866 U CN 202854866U CN 201220513193 CN201220513193 CN 201220513193 CN 201220513193 U CN201220513193 U CN 201220513193U CN 202854866 U CN202854866 U CN 202854866U
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- nfc
- chip
- usb interface
- secret key
- key card
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Abstract
The utility model discloses an NFC secret key card with a USB interface. The NFC secret key card comprises a card body with the USB interface, a USB interface control chip, an encrypted safety chip, a rechargeable lithium battery, a USB-charging chip, a power switch, a charging indication lamp, an NFC communication antenna and peripheral circuit components needed by the above-mentioned chips. An NFC chip in the secret key card can communicate with an NFC chip in a mobile phone; during paying with the mobile phone, a payment secret key in the encrypted safety chip in the secret key card is read; the secret key card can be connected with a computer through the USB interface to download update secret key information on line into the encrypted safety chip. In actual mobile phone payment, bank account information is stored in the mobile phone, the payment secret key is read from the NFC secret key card, so separation of an account number and a password is realized; thus, the safety problem that hand-operated input of a payment password results in divulging of the password and the problem that an account is stolen caused by loss of the mobile phone are effectively prevented.
Description
Affiliated technical field
The utility model relates to for the device that stores and read the secure payment key, especially uses the NFC equipment on the portable terminal to read the key card of paying key a kind of.
Background technology
The English full name of NFC is Near Field Communication, is that a kind of the short distance wireless communication technology NFC is initiated by PHILIPS Co., is united a wireless technology of promoting mainly by well-known manufacturers such as Nokia, Sonys.NFC is developed by non-contact radio-frequency identification (RFID) and the Technology Integration that interconnects, and combining induction card reader, induction type card and point-to-point function on one chip can be identified and exchanges data with compatible equipment apart from interior at 10cm.The mobile phone of outfit NFC has the function in the convenient paying of multiple occasion, but need to be by Information Authentication user identity such as keys for large amounts of transaction.At present, realize that mobile-phone payment has 2 kinds of schemes: full terminal scheme, integrated security chip on the NFC mobile phone; Machine card cooperation SWP scheme, mobile phone NFC chip connects the safety chip in the SIM card.The behaviors such as the user changes mobile phone, changes number like this, mobile phone is lost all can cause security breaches, need to input payment cipher in terminal in the time of this external payment, easily by mobile phone viruses or by the side of the people snatch password.
The utility model content
The technical matters that the utility model mainly solves is that the payment information such as the account, digital certificate, key of existing mobile-phone payment all records and is stored in portable terminal or the built-in card, thereby has stolen potential safety hazard.The utility model provides a kind of NFC key card of USB interface, is designated hereinafter simply as the NFC key card.The NFC key card be combined with the mobile phone of supporting NFC and can be realized separating of account, certificate, key, safely on portable terminal finishes payment.
For solving the problems of the technologies described above, a kind of technical scheme that the utility model solves its technical matters to be provided is: the NFC key card that a kind of USB interface is provided, it comprises: with the card of USB interface, the USB interface control chip, encryption safe chip, charged lithium cells, the USB charging chip, power switch, charging indicator light, the peripheral circuit element that NFC communication antenna and said chip are required.
Wherein, described card with USB interface is urinated in carrying, and USB interface is retractable interface.
Wherein, described USB interface control chip is the PL-2303 chip, and this chip links to each other with the NFC read-write chip by the UART interface.
Wherein, described NFC read-write chip is the PN544 chip, and this chip links to each other with the NFC antenna.
Wherein, described encryption safe chip is the P5CN145 chip, and this chip links to each other with the PN544 chip by the S2C interface.
Wherein, described charged lithium cells is 3.7V, and volume is convenient to the card of packing into, is PN544 and P5CN145 power supply.
Wherein, described USB charging chip is MAX1811, and this chip is used for connecting USB interface and charged lithium cells, and is connected to charging indicator light.
Wherein, described power switch can disconnect the outlet line of charged lithium cells, stops to be PN544 and P5CN145 power supply.
The beneficial effects of the utility model are: be different from prior art, the utility model utilizes the NFC chip communication in the interior NFC chip of NFC key card and the mobile phone, and mobile phone reads the payment key information in the encryption safe core in the key card.The NFC key card can connect computer by USB interface, from mobile-phone payment service provider down loading updating key information to the encryption safe chip.The Bank Account Number information that is used for payment is stored at mobile phone, thereby account number cipher separates, and is directly used in authentication and data transmission from the data that the NFC key card reads, and does not store in terminal, and effective like this mobile phone of avoiding is lost the safety problem stolen with account.
Description of drawings
Fig. 1 is the better circuit structure diagram of NFC key card of USB interface.
Among the figure:
1, USB interface, 2, the USB interface control chip, 3, the NFC read-write chip, 4, the encryption safe chip, 5, charged lithium cells, 6, the USB charging chip, 7, power switch, 8, charging indicator light, 9, the NFC communication antenna.
Fig. 2 is a kind of surface structure of NFC key card of USB interface
Among the figure:
9, NFC printed antenna in the card; 10, plastic material card; 11, embed the telescopic USB interface of card; 12, micro sliding formula switch; 13, LED light lampshade.
Embodiment
By describing technology contents of the present utility model, structural attitude in detail, realized purpose and effect, below in conjunction with embodiment and cooperate that accompanying drawing is detailed to give explanation.
Consult Fig. 1, it is the circuit structure diagram of a better enforcement of NFC key card of the utility model USB interface.The NFC key card of USB interface comprises: usb 1, USB interface control chip 2, NFC read-write chip 3, encryption safe chip 4, charged lithium cells 5, USB charging chip 6, power switch 7, charging indicator light 8, NFC communication antenna 9 critical pieces such as grade.
Wherein usb 1 is responsible for being connected with the computer terminal, in order to limit finished-product volume, specifically can adopt the telescopic USB interface that embeds card; Usb 1 links to each other with the usb signal input interface of USB interface control chip 2, specifically can adopt the PL2303HX chip of getting Prolific to turn the serial communication chip as USB, and its effect is the signal that usb signal is changed into accessible NFC chip; USB interface control chip 2 links to each other by the UART interface with NFC read-write chip 3, specifically can adopt the PN544 chip of NXP as NFC read-write chip 3; NFC read-write chip 3 and encryption safe chip 4 link to each other by serial line interface, specifically can adopt the P5CN145 chip of NXP as encryption safe chip 4, P5CN145 has 144KBEEPROM storage encryption information, inner integrated a plurality of dedicated encrypted processors adopt the safety chip interface of S2C of NXP as connecting serial ports; NFC communication antenna 9 is connected in the NFC signal that is used for sending and receiving 13.56MHz on the NFC read-write chip 3.User's payment key is written to encryption zone in the encryption safe chip 4 by usb 1, USB interface control chip 2, NFC read-write chip 3, the effect of encryption safe chip 4 be encrypt the key of conciliating on the NFC keying material and user profile and safe storage they.When the user wishes to read key for payment, NFC read-write chip 3 is carried out wireless near field communication in NFC chip by mobile phone and the NFC key card, the NFC chip pattern that has the initiative in the mobile phone, the NFC chip is in passive read mode in the key card, after the reading requirement of mobile phone is licensed, NFC read-write chip 3 is returned the appointed area key data to 4 requests of encryption safe chip, and key data returns the NFC read-write chip and is sent to and is used for payment in the mobile phone.
In the circuit structure of this better enforcement, charged lithium cells 5 provides electric power during for NFC read-write chip 3, encryption safe chip 4 reading out data, specifically can adopt the charged lithium cells that is exclusively used in the rfid card sheet; Charged lithium cells 5 connects usb 1 by USB charging chip 6, specifically can adopt the MAX1811USB interface charging chip of Maxim, is charged lithium cells 5 chargings by usb 1, is connected to charging indicator light 8 at USB charging chip 6; Power switch 7 can cut off charged lithium cells 5 and NFC read-write chip 3, encryption safe chip 4 feed circuit, and the scanning that prevents malice is read the NFC key card and saved simultaneously electric power.
In the circuit structure of this better enforcement, NFC read-write chip 3 arranges two kinds of mode of operations, and wherein wired mode card is communicated by letter with encryption safe chip 4 by usb 1 for computing machine, and the less radio-frequency part of NFC read-write chip 3 is not activated.NFC read-write chip 3 is as a non-contact card under the virtual card pattern, all request of data and process all and processed by encryption safe chip 4, and this moment, NFC read-write chip 3 was equivalent to an externally bridge joint effect between NFC equipment and the encryption safe chip 4.
Consult Fig. 2, it is the external structure of a better enforcement of NFC key card of the utility model USB interface.Comprise NFC printed antenna 9 in the card, plastic material card 10, the telescopic USB interface 11 of embedding card, micro sliding formula switch 12, LED light lampshade 13.
Wherein the interior NFC printed antenna 9 of card is printed on the inboard of the shell of card, links to each other with the antennal interface of NFC read-write chip 3; Plastic material card 10 is of a size of 8.56cm * 5.40cm * 0.5cm, is easy to carry with present bank card I.D. in the same size, also can be for attractive in appearance or be convenient to lenses design and become other shape.The telescopic USB interface 11 that embeds card is the ultra-thin USB interface without metal cap; The height of micro sliding formula switch 12 is lower than card surface, prevents from touching unintentionally opening the NFC key card; LED light lampshade 13 is transparent plastic, height and card surface level.
In sum, the NFC key card of the utility model USB interface can by USB interface down loading updating key to the NFC key card, read the key of storing in the NFC key card by the NFC chip when mobile-phone payment.The NFC key card can be tied to a plurality of account No.s, payment key corresponding to storage respectively, and the form of payment key can be fixed password, also dynamic password.
The above only is embodiment of the present utility model; be not so limit claim of the present utility model; every equivalent structure or equivalent flow process conversion that utilizes the utility model instructions and accompanying drawing content to do; or directly or indirectly be used in other relevant technical fields, all in like manner be included in the scope of patent protection of the present utility model.
Claims (5)
1. the NFC key card of a USB interface, it is characterized in that, comprising: NFC read-write chip, the encryption safe chip that is electrical connected with the NFC read-write chip, USB interface control chip with the NFC read-write chip is electrical connected is the charged lithium cells of NFC read-write chip and encryption safe chip power supply.
2. the NFC key card of USB interface according to claim 1 is characterized in that, the NFC read-write chip links to each other with the NFC antenna.
3. the NFC key card of USB interface according to claim 1 is characterized in that, USB interface is the charged lithium cells charging by the USB charging chip.
4. the NFC key card of USB interface according to claim 1 is characterized in that, charged lithium cells links to each other with the encryption safe chip power supply circuit with the NFC read-write chip by power switch.
5. the NFC key card of USB interface according to claim 1 is characterized in that, USB interface control chip and telescopic USB interface are electrical connected.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220513193 CN202854866U (en) | 2012-09-24 | 2012-09-24 | NFC secret key card with USB interface |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220513193 CN202854866U (en) | 2012-09-24 | 2012-09-24 | NFC secret key card with USB interface |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202854866U true CN202854866U (en) | 2013-04-03 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220513193 Expired - Fee Related CN202854866U (en) | 2012-09-24 | 2012-09-24 | NFC secret key card with USB interface |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202854866U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103414564A (en) * | 2013-08-07 | 2013-11-27 | 成都卫士通信息产业股份有限公司 | Secrete key card, secrete key device and method for protecting private key |
| CN103530770A (en) * | 2013-09-09 | 2014-01-22 | 金子光 | One-key payment method for mobile phone |
| CN103560890A (en) * | 2013-11-18 | 2014-02-05 | 黄燕平 | Networked transaction system and method based on mobile terminal |
| CN103810412A (en) * | 2014-01-24 | 2014-05-21 | 安徽云盾信息技术有限公司 | Method for synchronizing public keys of encryption device based on NFC technology |
| CN111026620A (en) * | 2019-11-28 | 2020-04-17 | 四川泛华航空仪表电器有限公司 | Data visualization Processing system and method based on Processing |
-
2012
- 2012-09-24 CN CN 201220513193 patent/CN202854866U/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103414564A (en) * | 2013-08-07 | 2013-11-27 | 成都卫士通信息产业股份有限公司 | Secrete key card, secrete key device and method for protecting private key |
| CN103530770A (en) * | 2013-09-09 | 2014-01-22 | 金子光 | One-key payment method for mobile phone |
| CN103560890A (en) * | 2013-11-18 | 2014-02-05 | 黄燕平 | Networked transaction system and method based on mobile terminal |
| CN103810412A (en) * | 2014-01-24 | 2014-05-21 | 安徽云盾信息技术有限公司 | Method for synchronizing public keys of encryption device based on NFC technology |
| CN111026620A (en) * | 2019-11-28 | 2020-04-17 | 四川泛华航空仪表电器有限公司 | Data visualization Processing system and method based on Processing |
| CN111026620B (en) * | 2019-11-28 | 2023-11-17 | 四川泛华航空仪表电器有限公司 | Processing-based data visualization Processing system and method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130403 Termination date: 20130924 |