CN2758395Y - Data cipher key structure - Google Patents
Data cipher key structure Download PDFInfo
- Publication number
- CN2758395Y CN2758395Y CN 200420118135 CN200420118135U CN2758395Y CN 2758395 Y CN2758395 Y CN 2758395Y CN 200420118135 CN200420118135 CN 200420118135 CN 200420118135 U CN200420118135 U CN 200420118135U CN 2758395 Y CN2758395 Y CN 2758395Y
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- CN
- China
- Prior art keywords
- key
- interface
- receiving system
- data
- nonvolatile storage
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Abstract
The utility model relates to a key structure, more specifically a data key structure. The utility model is composed of a key receiving device with an intelligent controller, a key interface and a key with a nonvolatile memory. When the utility model is used, the key is connected with the key receiving device through the key interface, and data information stored in the nonvolatile memory of the key is read by the intelligent controller of the key receiving device through the key interface and is compared and judged by the intelligent controller of the key receiving device, so that functions of unlocking and lifting access control can be realized. A key structure designed by the utility model has the advantages of good security, high reliability and strong anti-interference ability; because a mechanical inserting interface is used, the key structure has simple structure, and a card reader device which needs arranging for a key system using contact cards or contactless cards is omitted, so that the cost of the key structure is reduced and the key structure is convenient in use. The utility model can be used for various antitheft devices for vehicles and access control devices.
Description
Technical field
The utility model relates to a kind of key structure, is a kind of data key structure specifically.
Technical background
Existing key device is a lot, but all how much has the problem of some technology and use aspect, and as remote controller, structure and technology is more complicated all, poor anti jamming capability, cost are higher again, and card class key devices such as magnetic card, IC-card, then easily by imitated, confidentiality is poor, and reliability is also lower.
The utility model content
The utility model is in order to overcome above-mentioned shortcoming, and a kind of reliability height, good confidentiality, antijamming capability is strong, simple in structure, cost is low data key structure are provided.
The technical scheme in the invention for solving the technical problem is: be made of a key receiving system, a key and a cipher key interface; described key receiving system be installed in need protection and the equipment of authentication on; and be connected with corresponding device in the described equipment; during use; described key is connected with the key receiving system by cipher key interface; described key receiving system comprises an intelligent control unit; be provided with memory in the described key, described memory is a nonvolatile storage.
Described cipher key interface can be mechanical type and patches interface.
Described cipher key interface can be USB interface, and described USB plug is arranged on the key, and USB socket is arranged on the key receiving system.
Described key receiving system also can comprise a nonvolatile storage, and described nonvolatile storage is built in intelligent control unit, or is placed on intelligent control unit, and is connected with intelligent control unit by data wire.
Nonvolatile storage in the described key can be that erasable memory or both is for the nonvolatile storage in erasable memory or the key receiving system.
Nonvolatile storage in the described key can be flash memory or EPROM or E
2PROM.
Nonvolatile storage in the described key receiving system can be flash memory or EPROM or E
2PROM.
The input of cipher key interface can be provided with at least one holding circuit in the described key receiving system.
Described holding circuit can at least one be that overvoltage crowbar or at least one are current foldback circuit.
Described overvoltage crowbar can be constituted by TVS device or voltage-stabiliser tube or both.
The utility model is by a key receiving system that has intelligent controller, a cipher key interface and a key structure that has the key formation of nonvolatile storage, in use, by cipher key interface key is linked to each other with the key receiving system, read the data message that stores in the nonvolatile storage in the key by cipher key interface by the intelligent controller in the key receiving system, and compare judgement, thereby realize unblanking, the function of lifting a ban, adopt the key structure that designs in the utility model, good confidentiality, the reliability height, antijamming capability is strong, and owing to adopted mechanical type to patch interface, relatively simple for structure, also saved the card reader arrangement that institute in the cipher key system that uses contact card or non-contact card must outfit, therefore greatly reduced cost, used also very convenient.The utility model can be widely used in various vehicle anti-thefts, the gate inhibition's equipment.
Description of drawings
Fig. 1 is a theory diagram of the present utility model
Fig. 2 is the circuit theory diagrams of embodiment 1 in the utility model
Fig. 3 is the circuit theory diagrams of embodiment 2 in the utility model
Fig. 4 is the circuit theory diagrams of embodiment 3 in the utility model
The specific embodiment
As shown in Figure 1; the utility model is by a key receiving system that has intelligent controller ECU; a cipher key interface and a key that has nonvolatile storage constitute; described key receiving system be installed in need protection and the equipment of authentication on; and be connected with corresponding device in the described equipment; in use; by cipher key interface key is connected with the key receiving system; read the data message that stores in the nonvolatile storage in the key by cipher key interface by the intelligent controller in the key receiving system; and compare judgement, thereby realize unblanking; the function of lifting a ban.
Below in conjunction with specific embodiment the utility model is described further.
Embodiment 1 as shown in Figure 2, the key that has nonvolatile storage links to each other with the key receiving system that has intelligent controller ECU by cipher key interface, nonvolatile storage in the described key is flash memory FLASH, cipher key interface is a USB interface, described intelligent controller ECU is provided with built-in flash memory FLASH, the plug of described USB interface links to each other with the data terminal of flash memory FLASH in the key, the socket of USB interface links to each other with the data terminal of intelligent controller ECU in the key receiving system, reference power supply VCC provides working power for intelligent controller ECU, and simultaneously through two pull-up resistor R1, R2 is connected respectively on the data wire of cipher key interface, and data key is stored in respectively among the flash memory FLASH and the flash memory FLASH in the key receiving system in the key.When the user passes through USB plug disposed thereon with key, when reeve is arranged on the USB socket on the key receiving system, the data terminal of intelligent controller ECU in the data terminal that makes flash memory FLASH in the key and the key receiving system links to each other, described intelligent controller ECU can read the key data of storing among the flash memory FLASH by this data connection, and with intelligent controller ECU in flash memory FLASH in the key data stored compare, judge whether employed key is correct, if correctly carry out corresponding other operations again.
Embodiment 3 as shown in Figure 4, the key that has nonvolatile storage links to each other with the key receiving system that has intelligent controller ECU by cipher key interface, the nonvolatile storage in the described key is E
2PROM, described cipher key interface is a USB interface, described intelligent controller ECU is provided with built-in flash memory FLASH, E in the plug of described USB interface and the key
2The data terminal of PROM links to each other; the socket of USB interface links to each other with the data terminal of intelligent controller ECU in the key receiving system; reference power supply VCC provides working power for intelligent controller ECU; and simultaneously through two pull-up resistor R1; R2 is connected respectively on the data wire of cipher key interface; on intelligent controller ECU and data wire that USB socket links to each other, also be connected with holding circuit respectively; be used for when overvoltage or overcurrent, intelligent controller ECU being protected timely; prevent because of static; the infringement that high pressure that interfering signal or abnormal operation produce or overcurrent cause intelligent controller ECU; used the TVS device to absorb overvoltage in the circuit in the present embodiment; thereby protection intelligent controller ECU; one end of described TVS device is connected on intelligent controller ECU and the data wire that USB socket links to each other, other end ground connection.Described data key is stored in the E in the key respectively
2Among the flash memory FLASH in PROM and the key receiving system.When the user passes through USB plug disposed thereon with key, when injecting on the USB socket that is arranged on the key receiving system, make E in the key
2The data terminal of intelligent controller ECU in the data terminal of PROM and the key receiving system links to each other, and described intelligent controller ECU can connect by this data read E
2The key data of storing among the PROM, and compare with the key data that flash memory FLASH among the intelligent controller ECU is stored, judge whether employed key is correct, if correctly carry out corresponding other operations again.
Claims (10)
1. data key structure; it is characterized in that: constitute by a key receiving system, a key and a cipher key interface; described key receiving system be installed in need protection and the equipment of authentication on; and be connected with corresponding device in the described equipment; during use, described key is connected with the key receiving system by cipher key interface, and described key receiving system comprises an intelligent control unit; be provided with memory in the described key, described memory is a nonvolatile storage.
2. data key structure according to claim 1 is characterized in that: described cipher key interface is that mechanical type patches interface.
3. data key structure according to claim 2 is characterized in that: described cipher key interface is a USB interface, and described USB plug is arranged on the key, and USB socket is arranged on the key receiving system.
4. according to claim 1 or 2 or 3 described data key structures, it is characterized in that: described key receiving system also comprises a nonvolatile storage, described nonvolatile storage is built in intelligent control unit, or is placed on intelligent control unit, and is connected with intelligent control unit by data wire.
5. data key structure according to claim 4 is characterized in that: the nonvolatile storage in the described key is that erasable memory or the nonvolatile storage in the key receiving system is that erasable memory or both is.
6. data key structure according to claim 5 is characterized in that: the nonvolatile storage in the described key is flash memory or EPROM or E
2PROM.
7. data key structure according to claim 5 is characterized in that: the nonvolatile storage in the described key receiving system is flash memory or EPROM or E
2PROM.
8. according to claim 1 or 2 or 3 described data key structures, it is characterized in that: the input of cipher key interface is provided with at least one holding circuit in the described key receiving system.
9. data key structure according to claim 8 is characterized in that: at least one is a current foldback circuit for overvoltage crowbar or at least one for described holding circuit.
10. data key structure according to claim 8 is characterized in that: described overvoltage crowbar is constituted by TVS device or voltage-stabiliser tube or both.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420118135 CN2758395Y (en) | 2004-11-23 | 2004-11-23 | Data cipher key structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420118135 CN2758395Y (en) | 2004-11-23 | 2004-11-23 | Data cipher key structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2758395Y true CN2758395Y (en) | 2006-02-15 |
Family
ID=36078537
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200420118135 Expired - Fee Related CN2758395Y (en) | 2004-11-23 | 2004-11-23 | Data cipher key structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2758395Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104992539A (en) * | 2015-06-02 | 2015-10-21 | 常州联力自动化科技有限公司 | Intrinsic safety type wireless remote controller with controllable functions |
-
2004
- 2004-11-23 CN CN 200420118135 patent/CN2758395Y/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104992539A (en) * | 2015-06-02 | 2015-10-21 | 常州联力自动化科技有限公司 | Intrinsic safety type wireless remote controller with controllable functions |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |