CN204791020U - USB equipment - Google Patents
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- CN204791020U CN204791020U CN201520524147.0U CN201520524147U CN204791020U CN 204791020 U CN204791020 U CN 204791020U CN 201520524147 U CN201520524147 U CN 201520524147U CN 204791020 U CN204791020 U CN 204791020U
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- safety chip
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- usb device
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Abstract
The embodiment of the utility model discloses USB equipment, USB equipment passes through the USB interface and links to each other with the host computer, USB equipment includes main control chip and a plurality of security chip. Main control chip for come from receiving after the instruction of host computer, will a security chip among a plurality of security chip confirms as and is used for carrying out the security chip of instruction, and will the instruction issue extremely be used for carrying out the security chip of instruction. Be used for carrying out the security chip of instruction is used for receiving carry out the instruction back the instruction. The utility model discloses an operation that realizes erupting simultaneously of a plurality of security chip not only can improve the operational speed of cryptographic algorithm, also can not bring simultaneously like the costco wholesale height, gives out heat big additional problem.
Description
Technical field
The utility model relates to data processing field, is specifically related to a kind of USB device.
Background technology
USB device (USBKey) is a kind of hardware device of USB interface.Its built-in single-chip microcomputer or intelligent card chip, has certain storage space, can store private key and the digital certificate of user, and the public key algorithm utilizing USBKey built-in realizes the certification to user identity.Because private key for user is kept in coded lock, make in theory all cannot read in any way, therefore ensure that the security of user authentication.
USBKey is more and more general as the application of carrier in PKI (Public Key Infrastructure) field of digital certificate, and bank has expanded to other application from network, as web-based registration etc. needs the scene of batch signature.Due to the restriction of the safety chip performance that traditional USBKey adopts, make the arithmetic speed of its cryptographic algorithm can not meet the requirement of user.
The safety chip adopted to improve USBKey performs the arithmetic speed of cryptographic algorithm, the safety chip that the scheme existed in the market mostly is and adopts high-frequency, high performance safety chip replaces traditional USBKey to adopt, but although high-frequency, high performance safety chip can solve the problem of the arithmetic speed of cryptographic algorithm, be cost with decades of times or higher Costco Wholesale.Meanwhile, due to the high-frequency of safety chip, operationally thermal value is large to make safety chip, have impact on the experience of user.
Utility model content
The utility model provides a kind of USB device, can not only solve the problem of the arithmetic speed of cryptographic algorithm, also can not bring as Costco Wholesale is high, the accessory problem that thermal value is large.
The utility model provides a kind of USB device, and described USB device is connected with host computer by USB interface, and described USB device comprises main control chip and multiple safety chip;
Described main control chip, for after receiving the instruction from described host computer, a safety chip in described multiple safety chip is defined as the safety chip for performing described instruction, and is used for performing the safety chip of described instruction described in described instruction being sent to;
The described safety chip for performing described instruction, for after receiving described instruction, performs described instruction.
Preferably, described USB device is equipment complex, and described main control chip is also for setting up multiple logical channel corresponding with each interfacing equipment in described USB device respectively, and described logical channel is used for the communication of described main control chip and described host computer; And the corresponding relation of each logical channel and each safety chip is set.
Preferably, described main control chip also for by a logical channel in described multiple logical channel, receives the instruction from described host computer; By identifying described logical channel, in the corresponding relation of each logical channel described and each safety chip, inquiring about the safety chip corresponding with described logical channel, and described safety chip being defined as the safety chip for performing described instruction.
Preferably, described main control chip is also for receiving the instruction from described host computer, and described instruction comprises safety chip mark; Identifying corresponding safety chip by described multiple safety chip with described safety chip, being defined as the safety chip for performing described instruction.
Preferably, described multiple safety chip comprises a main safety chip and multiple auxiliary safety chip, described main safety chip is used for the synchronizing information to be synchronized of described main safety chip self to described multiple auxiliary safety chip, described information to be synchronized comprises unsymmetrical key, safe condition, and described safe condition is for identifying the current residing safe class of safety chip.
Preferably, described main control chip, specifically for receiving from the generation unsymmetrical key instruction of described host computer or after differentiating authority instruction, described main safety chip is defined as the safety chip for performing the instruction of described generation unsymmetrical key or the instruction of discriminating authority, and the instruction of described generation unsymmetrical key or the instruction of discriminating authority are sent to described main safety chip;
Described main safety chip, for receiving the instruction of described generation unsymmetrical key or after differentiating authority instruction, generating unsymmetrical key or perform and differentiate authority.
Preferably, described main safety chip is used for the information encryption to be synchronized of self to be sent to described main control chip;
Described main control chip, for the synchronizing information described to be synchronized extremely described multiple auxiliary safety chip that will encrypt;
Described multiple auxiliary safety chip, for after the decrypts information described to be synchronized of encryption being stored, returns synchronous success status code to described main control chip;
Described main control chip, also for after the synchronous success status code receiving each auxiliary safety chip in described multiple auxiliary safety chip, sends synchronizing information success status code to be synchronized to described host computer.
Preferably, described main safety chip is used for the information encryption to be synchronized of described main safety chip self to be sent to described main control chip; Synchronizing information request to be synchronized is returned to described host computer by described main control chip;
Described main control chip, after receiving the synchronizing information instruction to be synchronized from described host computer, by the synchronizing information described to be synchronized of encryption to described multiple auxiliary safety chip.
The utility model provides a kind of USB device, and described USB device is connected with host computer by USB interface, and described USB device comprises main control chip and multiple safety chip; Described main control chip, for after receiving the instruction from described host computer, a safety chip in described multiple safety chip is defined as the safety chip for performing described instruction, and is used for performing the safety chip of described instruction described in described instruction being sent to; The described safety chip for performing described instruction, for after receiving described instruction, performs described instruction.The utility model realizes concurrent operations by multiple safety chip, can not only improve the arithmetic speed of cryptographic algorithm, also can not bring as Costco Wholesale is high, the accessory problem that thermal value is large simultaneously.In addition, the utility model also achieves the synchronous of many safety chips in USB device.
Accompanying drawing explanation
In order to be illustrated more clearly in the technical scheme in the embodiment of the present application, below the accompanying drawing used required in describing embodiment is briefly described, apparently, accompanying drawing in the following describes is only some embodiments of the application, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.
The process flow diagram of the data processing method of the USB device that Fig. 1 provides for the utility model embodiment;
The structural representation of the USB device that Fig. 2 provides for the utility model embodiment.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present application, be clearly and completely described the technical scheme in the embodiment of the present application, obviously, described embodiment is only some embodiments of the present application, instead of whole embodiments.Based on the embodiment in the application, those of ordinary skill in the art are not making the every other embodiment obtained under creative work prerequisite, all belong to the scope of the application's protection.
In the examples below, host computer refers to the computing machine that directly can send manipulation instruction, but is not limited thereto.USB device (USBKey) is a kind of hardware device of USB interface.Wherein, USB device is connected with host computer by USB interface.
USB device in the utility model embodiment is a kind of USB device with multiple safety chip.Concurrent operations is realized, to improve the arithmetic speed of the cryptographic algorithm in USB device by the many safety chips in USB device.In fact, from device external, the operational effect of the similar high performance safety chip of concurrent operations of multiple safety chip.But, utilize the Costco Wholesale of traditional multiple safety chips lower, compared with adopting the scheme of high-frequency, high performance safety chip, saved cost to a certain extent.
Below the utility model embodiment is described.
The utility model embodiment provides a kind of data processing method of USB device, and wherein, described USB device comprises main control chip and multiple safety chip.Be the process flow diagram of the data processing method of the USB device of the utility model embodiment with reference to figure 1, Fig. 1, as shown in Figure 1, the method comprises the following steps:
S101: described main control chip is after receiving the instruction from described host computer, a safety chip in described multiple safety chip is defined as the safety chip for performing described instruction, and is used for performing the safety chip of described instruction described in described instruction being sent to.
S102: the described safety chip for performing described instruction, after receiving described instruction, performs described instruction.
The USB device that the utility model embodiment provides comprises main control chip and multiple safety chip.Wherein, when host computer and USB device are carried out mutual, the main control chip in this USB device directly communicates with host computer.That is, the multiple safety chips in USB device are by the communication of main control chip and host computer, and final to realize with this host computer mutual.
In S101, after the main control chip of USB device receives the instruction from host computer, determine that one for performing the safety chip of this instruction.
In a kind of implementation, described USB device is equipment complex.That is, after the USB device realizing equipment complex is connected with host computer, it is multiple USB device with single secure chip that the USB device that this is had multiple safety chip by this host computer is used as, and also can be understood as is that host computer is connected with multiple USB interface equipment with single secure chip.In practical application, the main control chip of described USB device sets up multiple logical channel corresponding with each interfacing equipment in described USB device respectively in advance, and pre-sets the corresponding relation of each logical channel and each safety chip.That is, host computer is wanted to carry out communicating from different safety chips to need to use different logical channels.
Concrete, described main control chip, by a logical channel in described multiple logical channel, receives the instruction from described host computer.Described main control chip, by identifying described logical channel, in the corresponding relation of each logical channel described and safety chip, is inquired about the safety chip corresponding with described logical channel, and described safety chip is defined as the safety chip for performing described instruction.Wherein, the corresponding relation of each logical channel and each safety chip is pre-set in main control chip.
In another kind of implementation, first, described main control chip receives the instruction from described host computer, and described instruction comprises safety chip mark, and wherein, safety chip mark is for identifying each safety chip.Secondly, described main control chip identifies corresponding safety chip by described multiple safety chip with described safety chip, is defined as the safety chip for performing described instruction.Concrete, the multiple safety chips in USB device have mark respectively, and the instruction that described host computer sends comprises the mark of safety chip, for identifying this instruction by which safety chip process.After described main control chip receives the instruction comprising safety chip mark, identify the safety chip mark in described instruction, and described instruction is forwarded to safety chip corresponding to described safety chip mark.It should be noted that the mark having prestored each safety chip in the main control chip of USB device.
In addition, in the present embodiment, host computer, before communicating with USB device, first determines the not busy busy condition of the safety chip in this USB device.The not busy busy condition of host computer each safety chip in this USB device of local record, is used to indicate host computer and which safety chip sends instruction to.In practical operation, after host computer sends instruction to certain safety chip, in this locality, the state of this safety chip is set to busy; After this safety chip returns response to host computer, the state of this safety chip is set to the free time in this locality by host computer.
In the present embodiment, described USB device comprises a main safety chip and multiple auxiliary safety chip, described main safety chip by the synchronizing information to be synchronized of self to described multiple auxiliary safety chip, to keep the synchronous of information in main and auxiliary safety chip.Wherein, described information to be synchronized comprises unsymmetrical key and or safe condition.Wherein, safe condition refers to that safety chip is in current residing a kind of safe class, by differentiating that authority can promote or reduce the level of security of safety chip.In practical operation, main safety chip, for generation of unsymmetrical key, can also be used for performing discriminating limiting operation.Concrete, host computer sends to described main control chip and generates unsymmetrical key instruction or differentiate authority instruction, described main control chip receives from the generation unsymmetrical key instruction of described host computer or after differentiating authority instruction, described main safety chip is defined as the safety chip for performing the instruction of described generation unsymmetrical key or the instruction of discriminating authority, and the instruction of described generation unsymmetrical key or the instruction of discriminating authority are sent to described main safety chip.Described main safety chip is receiving the instruction of described generation unsymmetrical key or after differentiating authority instruction, is generating unsymmetrical key or perform and differentiate limiting operation.It should be noted that this unsymmetrical key can not appear in host computer in any form.
Below introduce the synchronous method of the information to be synchronized (such as unsymmetrical key, safe condition) of two kinds of main and auxiliary safety chips, wherein a kind of method is:
First, the information encryption to be synchronized of self is sent to described main control chip, such as, for the asymmetric-key encryption of generation is sent to described main control chip by described main safety chip.Secondly, described main control chip is by the synchronizing information described to be synchronized of encryption extremely described multiple auxiliary safety chip.Concrete, described main control chip transmits described information to be synchronized by communication interface (SPI, I2C, UART etc.).Described multiple auxiliary safety chip, after the decrypts information described to be synchronized of encryption being stored, returns synchronous success status code to described main control chip.After described main control chip receives the synchronous success status code of each auxiliary safety chip in described multiple auxiliary safety chip, send synchronizing information success status code to be synchronized to described host computer.That is, only have all auxiliary safety chips in described multiple auxiliary safety chip all to complete synchronously, described main control chip just sends synchronizing information success status code to be synchronized to described host computer.
Wherein, status code can for the status indicator of making an appointment, and synchronous success status code is for informing that each auxiliary safety chip of main control chip has completed the synchronous of information to be synchronized.Synchronizing information success status code to be synchronized is used for notifying that the main and auxiliary safety chip of described host computer completes synchronously.
In another kind method, the information encryption to be synchronized of self is sent to described main control chip by described main safety chip, such as, for after main safety chip successfully generates unsymmetrical key, the asymmetric-key encryption of generation is sent to main control chip.Described main safety chip returns synchronizing information request to be synchronized by described main control chip to described host computer, sends synchronizing information instruction to be synchronized to ask described host computer to described main control chip.Described main control chip receives from after the synchronizing information instruction to be synchronized of described host computer, by the synchronizing information described to be synchronized of encryption to described multiple auxiliary safety chip, to complete the synchronizing information to be synchronized of main and auxiliary safety chip.
In addition, USB device needed first to carry out initialization and pre-individualized operation to the safety chip COS (chip operating system) in USB device before being first used.Because USB device of the present utility model has multiple safety chip, so in order to reduce initialization and pre-individualized operation's number of times, the utility model embodiment only carries out initialization and pre-individualized operation to main safety chip COS.That is, before the USB device with many safety chips is first used, only in described main safety chip, carries out initialization and pre-individualized operation in advance, and do not need to carry out initialization and pre-individualized operation to each auxiliary safety chip COS.Simultaneously in order to security consideration, auxiliary safety chip, when using the privacy information as unsymmetrical key, first obtains the corresponding rights of using of this privacy information from main safety chip.Namely utilize the information synchronization method to be synchronized of main and auxiliary safety chip in the utility model embodiment, each auxiliary safety chip can obtain the corresponding rights of using of privacy information from main safety chip.
In practical operation, the safe condition of main and auxiliary safety chip is synchronous substantially identical with the implementation of the key synchronization of main and auxiliary safety chip, can understand the synchronous implementation of the safe condition of main and auxiliary safety chip with reference to the scheme of the key synchronization of main and auxiliary safety chip.
In the data processing method of the USB device that the utility model embodiment provides, described USB device is connected with host computer by USB interface, described USB device comprises main control chip and multiple safety chip, described method comprises: described main control chip is after receiving the instruction from described host computer, a safety chip in described multiple safety chip is defined as the safety chip for performing described instruction, and is used for performing the safety chip of described instruction described in described instruction being sent to; The described safety chip for performing described instruction, after receiving described instruction, performs described instruction.The utility model embodiment realizes concurrent operations by multiple safety chip, can not only improve the arithmetic speed of cryptographic algorithm, also can not bring as Costco Wholesale is high, the accessory problem that thermal value is large simultaneously.In addition, the utility model also achieves the synchronous of many safety chips in USB device.
Based on said method, the utility model embodiment provides a kind of USB device, with reference to figure 2, the structural representation of the USB device that Fig. 2 provides for the utility model embodiment, wherein, described USB device 200 is connected with host computer 210 by USB interface, and described USB device comprises main control chip 201 and multiple safety chip 202;
Described main control chip 201, for after receiving the instruction from described host computer, a safety chip in described multiple safety chip is defined as the safety chip for performing described instruction, and is used for performing the safety chip of described instruction described in described instruction being sent to;
The described safety chip 202 for performing described instruction, for after receiving described instruction, performs described instruction.
In a kind of implementation, realize USB equipment complex in advance, namely described USB device is equipment complex, described main control chip is also for setting up multiple logical channel corresponding with each interfacing equipment in described USB device respectively, and described logical channel is used for the communication of described main control chip and described host computer; And the corresponding relation of each logical channel and each safety chip is set.
In this implementation, described main control chip also for by a logical channel in described multiple logical channel, receives the instruction from described host computer; By identifying described logical channel, in the corresponding relation of each logical channel described and each safety chip, inquiring about the safety chip corresponding with described logical channel, and described safety chip being defined as the safety chip for performing described instruction.
In another kind of implementation, described main control chip is also for receiving the instruction from described host computer, and described instruction comprises safety chip mark; Identifying corresponding safety chip by described multiple safety chip with described safety chip, being defined as the safety chip for performing described instruction.
Multiple safety chip in the USB device that the present embodiment provides comprises a main safety chip and multiple auxiliary safety chip, described main safety chip is used for the synchronizing information to be synchronized of described main safety chip self to described multiple auxiliary safety chip, described information to be synchronized comprises unsymmetrical key, safe condition, and described safe condition is for identifying the current residing safe class of safety chip.
In practical application, main safety chip differentiates authority for generating unsymmetrical key or performing, and this unsymmetrical key can not appear in host computer in any form.
Concrete, described main control chip, specifically for receiving from the generation unsymmetrical key instruction of described host computer or after differentiating authority instruction, described main safety chip is defined as the safety chip for performing the instruction of described generation unsymmetrical key or the instruction of discriminating authority, and the instruction of described generation unsymmetrical key or the instruction of discriminating authority are sent to described main safety chip;
Described main safety chip, for receiving the instruction of described generation unsymmetrical key or after differentiating authority instruction, generating unsymmetrical key or perform and differentiate authority.
In addition, in order to realize the synchronous of main and auxiliary safety chip, described main safety chip is used for the information encryption to be synchronized of self to be sent to described main control chip;
Described main control chip, for the synchronizing information described to be synchronized extremely described multiple auxiliary safety chip that will encrypt;
Described multiple auxiliary safety chip, for after the decrypts information described to be synchronized of encryption being stored, returns synchronous success status code to described main control chip;
Described main control chip, also for after the synchronous success status code receiving each auxiliary safety chip in described multiple auxiliary safety chip, sends synchronizing information success status code to be synchronized to described host computer.
Described main safety chip in the utility model embodiment is used for the information encryption to be synchronized of described main safety chip self to be sent to described main control chip; Synchronizing information request to be synchronized is returned to described host computer by described main control chip;
Described main control chip, after receiving the synchronizing information instruction to be synchronized from described host computer, by the synchronizing information described to be synchronized of encryption to described multiple auxiliary safety chip.
A kind of USB device that the utility model embodiment provides, described USB device is connected with host computer by USB interface, described USB device comprises main control chip and multiple safety chip, described main control chip, for after receiving the instruction from described host computer, a safety chip in described multiple safety chip is defined as the safety chip for performing described instruction, and is used for performing the safety chip of described instruction described in described instruction being sent to; The described safety chip for performing described instruction, for after receiving described instruction, performs described instruction.The utility model embodiment realizes concurrent operations by multiple safety chip, can not only improve the arithmetic speed of cryptographic algorithm, also can not bring as Costco Wholesale is high, the accessory problem that thermal value is large simultaneously.In addition, the utility model also achieves the synchronous of many safety chips in USB device.
For terminal, server, system embodiment, because it corresponds essentially to embodiment of the method, so relevant part illustrates see the part of embodiment of the method.Terminal described above, server, system embodiment are only schematic, the wherein said module illustrated as separating component can or may not be physically separates, parts as module display can be or may not be physical location, namely can be positioned at a place, or also can be distributed in multiple network element.Some or all of module wherein can be selected according to the actual needs to realize the object of the present embodiment scheme.Those of ordinary skill in the art, when not paying creative work, are namely appreciated that and implement.
It should be noted that, in this article, the such as relational terms of first and second grades and so on is only used for an entity or operation to separate with another entity or operational zone, and not necessarily requires or imply the relation that there is any this reality between these entities or operation or sequentially.And, term " comprises ", " comprising " or its any other variant are intended to contain comprising of nonexcludability, thus make to comprise the process of a series of key element, method, article or equipment and not only comprise those key elements, but also comprise other key elements clearly do not listed, or also comprise by the intrinsic key element of this process, method, article or equipment.When not more restrictions, the key element limited by statement " comprising ... ", and be not precluded within process, method, article or the equipment comprising described key element and also there is other identical element.
Above the USB device of the utility model embodiment is described in detail, apply specific case herein to set forth principle of the present utility model and embodiment, the explanation of above embodiment just understands method of the present utility model and core concept thereof for helping; Meanwhile, for one of ordinary skill in the art, according to thought of the present utility model, all will change in specific embodiments and applications, in sum, this description should not be construed as restriction of the present utility model.
Claims (8)
1. a USB device, is characterized in that, described USB device is connected with host computer by USB interface, and described USB device comprises main control chip and multiple safety chip;
Described main control chip, for after receiving the instruction from described host computer, a safety chip in described multiple safety chip is defined as the safety chip for performing described instruction, and is used for performing the safety chip of described instruction described in described instruction being sent to;
The described safety chip for performing described instruction, for after receiving described instruction, performs described instruction.
2. USB device according to claim 1, it is characterized in that, described USB device is equipment complex, described main control chip is also for setting up multiple logical channel corresponding with each interfacing equipment in described USB device respectively, and described logical channel is used for the communication of described main control chip and described host computer; And the corresponding relation of each logical channel and each safety chip is set.
3. USB device according to claim 2, is characterized in that, described main control chip also for by a logical channel in described multiple logical channel, receives the instruction from described host computer; By identifying described logical channel, in the corresponding relation of each logical channel described and each safety chip, inquiring about the safety chip corresponding with described logical channel, and described safety chip being defined as the safety chip for performing described instruction.
4. USB device according to claim 1, is characterized in that, described main control chip is also for receiving the instruction from described host computer, and described instruction comprises safety chip mark; Identifying corresponding safety chip by described multiple safety chip with described safety chip, being defined as the safety chip for performing described instruction.
5. USB device according to claim 1, it is characterized in that, described multiple safety chip comprises a main safety chip and multiple auxiliary safety chip, described main safety chip is used for the synchronizing information to be synchronized of described main safety chip self to described multiple auxiliary safety chip, described information to be synchronized comprises unsymmetrical key, safe condition, and described safe condition is for identifying the current residing safe class of safety chip.
6. USB device according to claim 5, it is characterized in that, described main control chip, specifically for receiving from the generation unsymmetrical key instruction of described host computer or after differentiating authority instruction, described main safety chip is defined as the safety chip for performing the instruction of described generation unsymmetrical key or the instruction of discriminating authority, and the instruction of described generation unsymmetrical key or the instruction of discriminating authority are sent to described main safety chip;
Described main safety chip, for receiving the instruction of described generation unsymmetrical key or after differentiating authority instruction, generating unsymmetrical key or perform and differentiate authority.
7. USB device according to claim 5, is characterized in that, described main safety chip is used for the information encryption to be synchronized of self to be sent to described main control chip;
Described main control chip, for the synchronizing information described to be synchronized extremely described multiple auxiliary safety chip that will encrypt;
Described multiple auxiliary safety chip, for after the decrypts information described to be synchronized of encryption being stored, returns synchronous success status code to described main control chip;
Described main control chip, also for after the synchronous success status code receiving each auxiliary safety chip in described multiple auxiliary safety chip, sends synchronizing information success status code to be synchronized to described host computer.
8. USB device according to claim 5, is characterized in that, described main safety chip is used for the information encryption to be synchronized of described main safety chip self to be sent to described main control chip; Synchronizing information request to be synchronized is returned to described host computer by described main control chip;
Described main control chip, for receive after the synchronizing information instruction to be synchronized from described host computer will the synchronizing information described to be synchronized of encryption to described multiple auxiliary safety chip.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520524147.0U CN204791020U (en) | 2015-07-17 | 2015-07-17 | USB equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520524147.0U CN204791020U (en) | 2015-07-17 | 2015-07-17 | USB equipment |
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| Publication Number | Publication Date |
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| CN204791020U true CN204791020U (en) | 2015-11-18 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201520524147.0U Expired - Fee Related CN204791020U (en) | 2015-07-17 | 2015-07-17 | USB equipment |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106339621A (en) * | 2015-07-17 | 2017-01-18 | 北京握奇智能科技有限公司 | Data processing method for USB equipment and USB equipment |
| CN108257337A (en) * | 2016-12-29 | 2018-07-06 | 航天信息股份有限公司 | The method and system that a kind of tax control special equipment based on embedded platform is quickly made out an invoice |
| CN116167090A (en) * | 2023-04-21 | 2023-05-26 | 云筑信息科技(成都)有限公司 | Method for batch processing of PDF file electronic signatures based on UKey |
-
2015
- 2015-07-17 CN CN201520524147.0U patent/CN204791020U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106339621A (en) * | 2015-07-17 | 2017-01-18 | 北京握奇智能科技有限公司 | Data processing method for USB equipment and USB equipment |
| CN106339621B (en) * | 2015-07-17 | 2024-03-29 | 北京握奇智能科技有限公司 | Data processing method of USB device and USB device |
| CN108257337A (en) * | 2016-12-29 | 2018-07-06 | 航天信息股份有限公司 | The method and system that a kind of tax control special equipment based on embedded platform is quickly made out an invoice |
| CN116167090A (en) * | 2023-04-21 | 2023-05-26 | 云筑信息科技(成都)有限公司 | Method for batch processing of PDF file electronic signatures based on UKey |
| CN116167090B (en) * | 2023-04-21 | 2023-08-22 | 云筑信息科技(成都)有限公司 | Method for batch processing of PDF file electronic signatures based on UKey |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20151118 Termination date: 20210717 |