CN102412968A - System and method for realizing public key infrastructure (PKI) application by audio interface switching over universal serial bus (USB) protocol equipment - Google Patents
System and method for realizing public key infrastructure (PKI) application by audio interface switching over universal serial bus (USB) protocol equipment Download PDFInfo
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- CN102412968A CN102412968A CN2011103129580A CN201110312958A CN102412968A CN 102412968 A CN102412968 A CN 102412968A CN 2011103129580 A CN2011103129580 A CN 2011103129580A CN 201110312958 A CN201110312958 A CN 201110312958A CN 102412968 A CN102412968 A CN 102412968A
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Abstract
The invention disclose a system and a method for realizing public key infrastructure (PKI) application by an audio interface switching over universal serial bus (USB) protocol equipment. The system comprises a function application application programming interface (API) module, a chip operating system (CoS) instruction enclosing module, an audio frequency communication module, an analog-to-digital/digital-to-analog converter, a USB protocol processing module and a Usbkey device.
Description
Technical field
The present invention relates to a kind of PKI (Public Key Infrastructure) digital certificate application system and method, especially realize the system and method that PKI uses through COBBAIF switching usb protocol equipment.
Background technology
The UsbKey (usb protocol digital certificate equipment) that on PC (PC) machine, generally uses at present comprises two kinds of no button, no display screen Key and band button, band display screen Key; When using, the user inserts Key; Extract Key when finishing using; So just guaranteed the safety of customer digital certificate greatly, and band button band display screen Key gives examination of user especially, confirms in digital signature chance has so just been avoided the possibility of hacker attacks more.
Existing digital certificate store mode based on mobile device comprises at present: file storage, the storage of SD (safe digital) card, the storage of Sim (User Recognition) card paster etc.The document certificate storing process is: the private key and the public key certificate encryption of digital certificate are left on the memory space of mobile device; When using private key deciphered in the internal memory and use, the risk point of this storage is that hacker or lawless person can obtain the content of private key through means such as intercepting or slavish copying Device memory, so just can forge user identity and digital signature.SD card and Sim card paster storage mode are that the private key of digital certificate and public key certificate are kept on the relevant hardware carrier; The encrypted private key computing is accomplished in SD card or Sim card paster hardware device when using; But because SD card or Sim card paster one direct sum mobile device are in connection status; Therefore give hacker or lawless person exhaustive, crack the SD card or Sim card paster access password provides adequate time and chance; In case password is able to crack, forges user identity and digital signature so and become easy.
Be the potential safety hazard of avoiding existing equipment to bring, safe in utilization, the trusted identity authentication of strengthening each operation system that guarantees each operation system of mobile device and the authority that improves each operation system data, confidentiality; Through further investigation, we solve the problems referred to above at invention below the existing proposition.
Summary of the invention
The present invention is communicated with UsbKey and mobile device hardware layer through the earphone mouth; Realize that then mobile device end initiation UsbKey instruction can be by UsbKey identification and execution; The execution result of UsbKey end can turn back to the mobile device end, has so just accomplished and has used UsbKey to do PKI digital certificate application aims on the mobile device.
The system that realizes the PKI application through COBBAIF switching usb protocol equipment of the present invention; Comprise five unit; Its successively the order of connection be: function is used API (Application Programming Interface, API) module, COS instruction package module, voice communication module, D and D/A converter, usb protocol processing module, Usbkey device.
Wherein, said function is used the API module function of using based on digital certificate, for example digital signature, digital encryption etc. is provided.
Said COS instruction package module provides based on the instruction encapsulation and the interrelated logic of UsbKey COS system to be handled.
Said voice communication module is responsible for becoming audio format to send through the mobile device audio port data encapsulation.
Said D and D/A converter is responsible for acceptance, conversion and the transmission work of digital signal and analog signal.
But said usb protocol processing module is responsible for data encapsulation is become the packet of UsbKey identification protocol, and is responsible for resolving this protocol data bag.
Said UsbKey device is the digital certificate hardware storage device that has the Usb interface in user's hand.
Method of the present invention comprises the steps:
Step 1: the mobile device end sends the audio signal that contains the UsbKey instruction;
Step 2: convert said audio signal to digital signal, resolve and restore original UsbKey director data, and send in the numeral UsbKey of the bank device;
Step 3: the said numeral UsbKey of bank device execution command generates the data that contain execution result;
Step 4: the data transaction that will contain execution result becomes audio signal, and said voice data is sent to the mobile device end.
Comprise in the wherein said step 1:
Step 1.1: function is used the API module and is initiated signature operation, and calls COS instruction package module;
Step 1.2: said COS instruction package module, the requirement of using the API module according to function generates UsbKey COS director data, and sends to the voice communication module;
Step 1.3: said voice communication module converts director data audio signal to and sends to D and D/A converter.
Comprise in the said step 2:
Step 2.1: D and D/A converter converts the audio signal that receives to digital signal, and the line data verification of going forward side by side is if data correctly then send to the usb protocol processing module; Said D and D/A converter receives said audio signal again and converts digital signal to if data are incorrect, carries out verification once more;
Step 2.2: said usb protocol processing module is carried out the usb protocol encapsulation with the digital signal that receives, and converts the usb protocol data that the said numeral Usbkey of bank device can be discerned to, and sends to the said numeral Usbkey of bank device.
Comprise in the said step 3:
Step 3.1: the said numeral Usbkey of bank device carries out signature operation, and signed data is sent to said usb protocol processing module with the form that the discernible usb protocol of UsbKey encapsulates according to the usb protocol data that receive;
Step 3.2: said usb protocol processing module converts the signed data that receives to digital signal according to usb protocol, and sends to said D and D/A converter;
Comprise in the said step 4:
Step 4.1: said D and D/A converter converts the digital signal that receives to audio signal, and sends to said voice communication module.
Step 4.2, said voice communication module is packaged into the binary command data with the audio signal that receives, and sends to said COS instruction package module;
Step 4.3, the signed data that said COS instruction package module becomes said PKI certificate API to discern the binary command data transaction that receives, and send said PKI certificate API.
In addition, in said step 1.1, said function is used the funcall that the API module responds comes from upper system, and according to function said COS instruction package module is called; In said step 1.2, the response of said COS instruction package module comes from said function and uses calling of API module, generates corresponding UsbKey COS director data, and calls said voice communication module and carry out the transmission of director data; Calling of COS instruction level belonged to interface interchange; In said step 1.3, the said voice communication module invokes mobile device operation API of system generates audio frequency with director data and utilizes the voice playing mode to make director data pass through the audio port transmission; Calling of said voice communication module belonged to interface interchange.
In said step 2.1, said D and D/A converter receives the analog signal through the COBBAIF transmission, and converts thereof into digital signal and send to said usb protocol processing module; In said step 2.2, said Usb protocol process module is done further reduction with director data, but is packaged into the packet of UsbKey identification protocol then, through after the one or many communication director data being sent to said UsbKey;
In said step 4.2, said voice communication module is responsible for the voice data that imports into is decoded, analyzed, and is reduced into instruction result data, and sends to said COS instruction package module.In said step 4.3, said COS instruction package module is resolved and the real required result data of arrangement, and returns to said function application API module.
The beneficial effect of the inventive method is: realize that through COBBAIF mobile device uses UsbKey to do the PKI digital certificate and uses; For each operation system on the mobile device provides safer digital certificate solution; The present invention adopts 3.5mm or 2.5mm standard earphone mouth; Therefore the present invention is applicable to that all have the mobile device of above standard earphone mouth; Be particularly useful in each application system of mobile device the authority, non repudiation of authentication, data to the user, to the confidentiality demand of data, significant to promoting mobile e-business.
Description of drawings
Fig. 1 is a principle schematic of the present invention;
Fig. 2 is a system construction drawing of the present invention;
Fig. 3 is a method flow diagram of the present invention;
Embodiment
Main realization schematic diagram of the present invention is as shown in Figure 1.Method of the present invention is taked 3.5mm or the 2.5mm headset plug hardware link block as the mobile device COBBAIF, and the hardware link block of mobile device COBBAIF can comprise the tone frequency channel wire part.Adopt the fastening of switching device as mobile device and UsbKey communication; The mobile device end sends the analog-to-digital conversion module that the audio signal that contains the UsbKey instruction arrives switching device; Analog-to-digital conversion module is handled audio signal; Resolve and restore original UsbKey director data; Analog-to-digital conversion module sends to the UsbKey protocol conversion module with the UsbKey director data; Protocol conversion module is packaged into the discernible agreement of UsbKey with the UsbKey director data; Protocol conversion module sends to packaged UsbKey protocol data among the UsbKey through the UsbKey link block, and UsbKey begins execution command, and UsbKey returns the UsbKey protocol data that contains execution result; Protocol conversion module is resolved the UsbKey protocol data and is obtained UsbKey execution result data and UsbKey execution result data are sent to D/A converter module, and D/A converter module becomes analog signal and the hardware link block through the mobile device COBBAIF that analog signal data is sent to the mobile device end data transaction.
Further specify below in conjunction with accompanying drawing and embodiment.
The system that realizes the PKI application through COBBAIF switching usb protocol equipment of the present invention; As shown in Figure 2; Comprise five unit, its successively the order of connection be: function is used API module, COS instruction package module, voice communication module, D and D/A converter, usb protocol processing module, Usbkey device.
Wherein, said function is used the API module function of using based on digital certificate, for example digital signature, digital encryption etc. is provided.Said COS instruction package module provides based on the instruction encapsulation and the interrelated logic of UsbKey COS system to be handled.Said voice communication module is responsible for becoming audio format to send through the mobile device audio port data encapsulation.Said D and D/A converter is responsible for acceptance, conversion and the transmission work of digital signal and analog signal.But said usb protocol processing module is responsible for data encapsulation is become the packet of UsbKey identification protocol, and is responsible for resolving this protocol data bag.Said UsbKey device is the digital certificate hardware storage device that has the Usb interface in user's hand.
Its concrete method of work step, as shown in Figure 3:
Step 1: the mobile device end sends the audio signal that contains the UsbKey instruction;
Step 2: convert said audio signal to digital signal, resolve and restore original UsbKey director data, and send in the numeral UsbKey of the bank device;
Step 3: the said numeral UsbKey of bank device execution command generates the data that contain execution result;
Step 4: the data transaction that will contain execution result becomes audio signal, and said voice data is sent to the mobile device end.
Comprise in the wherein said step 1:
Step 1.1: function is used the API module and is initiated signature operation, and calls COS instruction package module;
Step 1.2: said COS instruction package module, the requirement of using the API module according to function generates UsbKey COS director data, and sends to the voice communication module;
Step 1.3: said voice communication module converts director data audio signal to and sends to D and D/A converter.
Comprise in the said step 2:
Step 2.1: D and D/A converter converts the audio signal that receives to digital signal, and the line data verification of going forward side by side is if data correctly then send to the usb protocol processing module; Said D and D/A converter receives said audio signal again and converts digital signal to if data are incorrect, carries out verification once more;
Step 2.2: said usb protocol processing module is carried out the usb protocol encapsulation with the digital signal that receives, and converts the usb protocol data that the said numeral Usbkey of bank device can be discerned to, and sends to the said numeral Usbkey of bank device.
Comprise in the said step 3:
Step 3.1: the said numeral Usbkey of bank device carries out signature operation, and signed data is sent to said usb protocol processing module with the form that the discernible usb protocol of UsbKey encapsulates according to the usb protocol data that receive;
Step 3.2: said usb protocol processing module converts the signed data that receives to digital signal according to usb protocol, and sends to said D and D/A converter;
Comprise in the said step 4:
Step 4.1: said D and D/A converter converts the digital signal that receives to audio signal, and sends to said voice communication module.
Step 4.2, said voice communication module is packaged into the binary command data with the audio signal that receives, and sends to said COS instruction package module;
Step 4.3, the signed data that said COS instruction package module becomes said PKI certificate API to discern the binary command data transaction that receives, and send said PKI certificate API.
In addition, in said step 1.1, said function is used the funcall that the API module responds comes from upper system, and according to function said COS instruction package module is called; In said step 1.2, the response of said COS instruction package module comes from said function and uses calling of API module, generates corresponding UsbKey COS director data, and calls said voice communication module and carry out the transmission of director data; Calling of COS instruction level belonged to interface interchange; In said step 1.3, the said voice communication module invokes mobile device operation API of system generates audio frequency with director data and utilizes the voice playing mode to make director data pass through the audio port transmission; Calling of said voice communication module belonged to interface interchange.
In said step 2.1, said D and D/A converter receives the analog signal through the COBBAIF transmission, and converts thereof into digital signal and send to said usb protocol processing module; In said step 2.2, said Usb protocol process module is done further reduction with director data, but is packaged into the packet of UsbKey identification protocol then, through after the one or many communication director data being sent to said UsbKey;
In said step 4.2, said voice communication module is responsible for the voice data that imports into is decoded, analyzed, and is reduced into instruction result data, and sends to said COS instruction package module.In said step 4.3, said COS instruction package module is resolved and the real required result data of arrangement, and returns to said function application API module.
Claims (10)
1. realize the system that PKI uses through COBBAIF switching usb protocol equipment for one kind, it is characterized in that said system comprises five unit, its successively the order of connection be:
Function is used API module, COS instruction package module, voice communication module, D and D/A converter, usb protocol processing module, Usbkey device.
2. the system that uses through COBBAIF switching usb protocol equipment realization PKI according to claim 1, wherein,
Said function is used the API module function of using based on digital certificate is provided, and comprises digital signature, digital encryption;
Said COS instruction package module provides based on the instruction encapsulation and the interrelated logic of UsbKey COS system to be handled;
Said voice communication module becomes audio format with data encapsulation and sends;
The signal after the conversion is changed and sent to said D and D/A converter with digital signal that receives and analog signal;
Said usb protocol processing module becomes the packet that UsbKey can identification protocol with data encapsulation, and resolves this protocol data bag;
Said UsbKey device is the digital certificate hardware storage device that has the Usb interface.
3. a method of using through COBBAIF switching usb protocol equipment realization PKI is characterized in that comprising the steps:
Step 1: the mobile device end sends the audio signal that contains the UsbKey instruction;
Step 2: convert said audio signal to digital signal, resolve and restore original UsbKey director data, and send in the numeral UsbKey of the bank device;
Step 3: the said numeral UsbKey of bank device execution command generates the data that contain execution result;
Step 4: the data transaction that will contain execution result becomes audio signal, and said voice data is sent to the mobile device end.
4. method according to claim 3 comprises in the wherein said step 1:
Step 1.1: function is used the API module and is initiated signature operation, and calls COS instruction package module;
Step 1.2: said COS instruction package module, the requirement of using the API module according to function generates UsbKey COS director data, and sends to the voice communication module;
Step 1.3: said voice communication module converts director data audio signal to and sends to D and D/A converter.
5. method according to claim 3 comprises in the wherein said step 2:
Step 2.1: D and D/A converter converts the audio signal that receives to digital signal, and the line data verification of going forward side by side is if data correctly then send to the usb protocol processing module; Said D and D/A converter receives said audio signal again and converts digital signal to if data are incorrect, carries out verification once more;
Step 2.2: said usb protocol processing module is carried out the usb protocol encapsulation with the digital signal that receives, and converts the usb protocol data that the said numeral Usbkey of bank device can be discerned to, and sends to the said numeral Usbkey of bank device.
6. method according to claim 3 comprises in the wherein said step 3:
Step 3.1: the said numeral Usbkey of bank device carries out signature operation, and signed data is sent to said usb protocol processing module with the form that the discernible usb protocol of UsbKey encapsulates according to the usb protocol data that receive;
Step 3.2: said usb protocol processing module converts the signed data that receives to digital signal according to usb protocol, and sends to said D and D/A converter.
7. method according to claim 3 comprises in the wherein said step 4:
Step 4.1: said D and D/A converter converts the digital signal that receives to audio signal, and sends to said voice communication module;
Step 4.2, said voice communication module is packaged into the binary command data with the audio signal that receives, and sends to said COS instruction package module;
Step 4.3, the signed data that said COS instruction package module becomes said PKI certificate API to discern the binary command data transaction that receives, and send said PKI certificate API.
8. method according to claim 4, wherein,
In said step 1.1, said function is used the funcall that the API module responds comes from upper system, and according to function said COS instruction package module is called;
In said step 1.2, the response of said COS instruction package module comes from said function and uses calling of API module, generates corresponding UsbKey COS director data, and calls said voice communication module and carry out the transmission of director data; Calling of COS instruction level belonged to interface interchange;
In said step 1.3, the said voice communication module invokes mobile device operation API of system generates audio frequency with director data and utilizes the voice playing mode to make director data pass through the audio port transmission; Calling of said voice communication module belonged to interface interchange.
9. method according to claim 5, wherein,
In said step 2.1, said D and D/A converter receives the analog signal through the COBBAIF transmission, and converts thereof into digital signal and send to said usb protocol processing module;
In said step 2.2, said Usb protocol process module is done further reduction with director data, is packaged into the packet that UsbKey can identification protocol then, through after the one or many communication director data being sent to said UsbKey.
10. method according to claim 7, wherein,
In said step 4.2, said voice communication module is responsible for the voice data that imports into is decoded, analyzed, and is reduced into instruction result data, and sends to said COS instruction package module;
In said step 4.3, said COS instruction package module is resolved and the real required result data of arrangement, and returns to said function application API module.
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Application publication date: 20120411 |