CN2524296Y - Digital sign identifying devices - Google Patents
Digital sign identifying devices Download PDFInfo
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- CN2524296Y CN2524296Y CN 02225550 CN02225550U CN2524296Y CN 2524296 Y CN2524296 Y CN 2524296Y CN 02225550 CN02225550 CN 02225550 CN 02225550 U CN02225550 U CN 02225550U CN 2524296 Y CN2524296 Y CN 2524296Y
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Abstract
The utility model relates to a number signing and identifying device. The utility model comprises a general serial bus connector device and a USB micro processing core; the inside of the micro processing device is provided with a code algorithm processor; the micro processing core is provided with a USB connector communicating and number certificate, a code key, a personal information memory and a coding, decoding and signing procedure; the utility model is connected on the computer through the USB connector and can realize the ID identifying and number signing function through matching with the trade procedure on the computer. The utility model has a small volume, a light weight, a low cost, is easy to be carried and is a new and practical electronic safe identifying device.
Description
The utility model relates to a kind of portable digital identification authentication, digital signature device.Be called for short the digital signature identification device.
In recent years, the develop rapidly of Internet technology and universal makes that carrying out electronic transaction by network is constantly paid attention to by people.The development of online shopping mall, Internet securities dealing, Web bank etc. is irresistible, the process of exchange of electronic transaction is finished in virtual network, this just makes the digital encryption in the transmission course, it is particularly important that user identity identification and digital signing seem, in present electronic transaction in order to reach the purpose of transaction security, generally all utilize so-called public key architecture (as RSA Algorithm), be that each dealer holds one by one people's numeral certificate, in process of exchange, use this certificate to come, decipher, carry out digital signature etc. encrypted transaction data.In the system of the personal digital certificate of microcomputer use at present, two kinds of implementations are generally arranged, a kind of be with digital certificate store on the hard disk of microcomputer, in transaction software, have and utilize this certificate to carry out the algorithm of data encryption, deciphering, digital signature etc., thereby realize the safety of electronic transaction, the advantage of this mode is: cost low (except that microcomputer need not any optional equipment).But when adopting this mode, personal digital certificate is on the hard disk media that is stored in without any protection, is easy to divulge a secret owing to copy or hacker attacks cause, and security has very big hidden danger.Another mode is to utilize the IC smart card, with digital certificate and add, deciphering, signature algorithm be stored in the IC-card, microcomputer visits IC-card by an IC-card read write line, the computing that adds, deciphers, signs of transaction is all finished in the IC intelligent card chip, when adopting this mode, because key, certificate and computing all are to finish in the IC smartcard internal, can stop leaking of confidential information, has higher security, but owing to will use the IC-card read write line, make to realize that cost is higher, and do not have a portability, influenced the use of this mode.
Fundamental purpose of the present utility model is intended to overcome the deficiencies in the prior art and a kind of portable, with low cost digital signature identification device that is difficult for divulging a secret is provided.
The purpose of this utility model is achieved in that
A kind of digital signature identification device is characterized in that: this device comprises that the microprocessor chip that USB (universal serial bus) (USB) device and a slice have a USB interface is electrically connected, and this microprocessor chip is built-in with the cryptographic algorithm coprocessor.
---described microprocessor chip inside is provided with the storer that is used for stored program flashmemory or ROM, also is provided for the eeprom memory of storage key (or digital certificate).
---described microprocessor chip and one or one group of button or a Fingerprint Identification Unit are electrically connected.
---cryptographic algorithm coprocessor in the described microprocessor chip is supported one or more in RSA, DES, the block encryption scheduling algorithm.
The utility model is described in further detail below by drawings and Examples:
Fig. 1 is an embodiment circuit block diagram of the present utility model
Fig. 2 is another embodiment circuit block diagram of the present utility model
Fig. 3 is one of the present utility model and implements circuit theory diagrams
In Fig. 1 and Fig. 2,1 and 4 is microcomputers of band USB interface, and 2 and 5 is standard USB interface devices, and 3 and 6 is microprocessor chips of band cryptographic algorithm coprocessor, USB interface, and 7 is one or one group of button or Fingerprint Identification Unit.
In Fig. 3, U1 can select AT90SC6464C-USB for use, and J1 can select any one standard USB interface device for use, and X1 selects the crystal oscillator of a 4MHZ for use.
During enforcement, this device is connected to form by standard universal serial bus (USB) interface device and a slice microprocessor chip, and this device can be encapsulated in the small-sized plastic housing, can make the key size, and has the clasp that can go here and there on the key chain.Design batch processing code in microprocessor chip is finished the functions such as realization of the storage of USB interface communication and digital certificate, key, personal information and encryption, deciphering, signature algorithm.This device continues by the USB interface on USB interface and the microcomputer.A transaction program is arranged on microcomputer, this transaction program at first receives user's instruction or the automatic operational order that produces this device when transaction, transaction program will instruct and send to this device by USB interface then, after device receives instruction, the operation of finishing this instruction in the inner microprocessor of device is (as encrypting, deciphering, computings such as signature), being provided with one group of password key as device just requires the user to input password on button, just require the user that finger is placed on the Fingerprint Identification Unit if any fingerprint identification device, check user identity errorless after, device is passed operating result back microcomputer by USB interface, the result that transaction program use device on the microcomputer returns operates accordingly, in once complete process of exchange, the data communication operation between microcomputer and the device can be carried out one or many according to actual needs.
Technical characterstic of the present utility model is: with single-chip microcomputer encryption and decryption technology, IC smart card techniques and the organic combination of USB interface technology, promptly have tight security thereby form, have small and exquisite portable and low cost and digital identification authentication system again.The microprocessor chip and the USB interface device that will have the asymmetric key algorithm function are integrated into one, and utilize the general-purpose interface of microcomputer to finish data transmission, make device easy to use, and applicability is wide.
In a word, have only a slice microprocessor chip on the device except peripheral components, make this solution, volume is littler, and weight is lighter, and cost is lower, and circuit is simpler, and is more safe and reliable.
Claims (3)
1, a kind of digital signature identification device is characterized in that: this device comprises that the microprocessor chip that USB (universal serial bus) (USB) device and a slice have a USB interface is electrically connected, and this microprocessor chip is built-in with the cryptographic algorithm coprocessor.
2, digital signature identification device according to claim 1, it is characterized in that being provided with the storer that is used for stored program flash memory or ROM, also be provided with the eeprom memory that is used for storage key (or digital certificate) in microprocessor chip inside.
3, digital signature identification device according to claim 1 is characterized in that microprocessor chip and one or one group of button or a Fingerprint Identification Unit are electrically connected.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02225550 CN2524296Y (en) | 2002-01-31 | 2002-01-31 | Digital sign identifying devices |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02225550 CN2524296Y (en) | 2002-01-31 | 2002-01-31 | Digital sign identifying devices |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2524296Y true CN2524296Y (en) | 2002-12-04 |
Family
ID=33702729
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 02225550 Expired - Fee Related CN2524296Y (en) | 2002-01-31 | 2002-01-31 | Digital sign identifying devices |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2524296Y (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100454321C (en) * | 2006-04-29 | 2009-01-21 | 北京飞天诚信科技有限公司 | USB device with data memory and intelligent secret key and control method thereof |
| CN1976279B (en) * | 2006-12-04 | 2010-10-06 | 北京飞天诚信科技有限公司 | Automatic monitoring and cleaning intelligent key system and working method thereof |
| CN101217366B (en) * | 2007-01-04 | 2012-08-22 | 北京紫贝龙科技有限责任公司 | A digital signature device with write protection |
| CN109768856A (en) * | 2018-11-19 | 2019-05-17 | 北京计算机技术及应用研究所 | It is a kind of for encrypting the portable security device of moneytary operations |
-
2002
- 2002-01-31 CN CN 02225550 patent/CN2524296Y/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100454321C (en) * | 2006-04-29 | 2009-01-21 | 北京飞天诚信科技有限公司 | USB device with data memory and intelligent secret key and control method thereof |
| US7861015B2 (en) | 2006-04-29 | 2010-12-28 | Feitian Technologies Co., Ltd. | USB apparatus and control method therein |
| CN1976279B (en) * | 2006-12-04 | 2010-10-06 | 北京飞天诚信科技有限公司 | Automatic monitoring and cleaning intelligent key system and working method thereof |
| CN101217366B (en) * | 2007-01-04 | 2012-08-22 | 北京紫贝龙科技有限责任公司 | A digital signature device with write protection |
| CN109768856A (en) * | 2018-11-19 | 2019-05-17 | 北京计算机技术及应用研究所 | It is a kind of for encrypting the portable security device of moneytary operations |
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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 |