CN105426785A - Data decryption method of mobile data storing device and mobile data storing device - Google Patents
Data decryption method of mobile data storing device and mobile data storing device Download PDFInfo
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- CN105426785A CN105426785A CN201511030909.2A CN201511030909A CN105426785A CN 105426785 A CN105426785 A CN 105426785A CN 201511030909 A CN201511030909 A CN 201511030909A CN 105426785 A CN105426785 A CN 105426785A
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F21/00—Security arrangements for protecting computers, components thereof, programs or data against unauthorised activity
- G06F21/70—Protecting specific internal or peripheral components, in which the protection of a component leads to protection of the entire computer
- G06F21/78—Protecting specific internal or peripheral components, in which the protection of a component leads to protection of the entire computer to assure secure storage of data
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F21/00—Security arrangements for protecting computers, components thereof, programs or data against unauthorised activity
- G06F21/30—Authentication, i.e. establishing the identity or authorisation of security principals
- G06F21/31—User authentication
- G06F21/32—User authentication using biometric data, e.g. fingerprints, iris scans or voiceprints
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F21/00—Security arrangements for protecting computers, components thereof, programs or data against unauthorised activity
- G06F21/60—Protecting data
- G06F21/602—Providing cryptographic facilities or services
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Abstract
The invention discloses a data decryption method of a mobile data storing device. The method comprises steps as follows: acquiring preset biological characteristics of users, comparing the preset biological characteristics with corresponding characteristics in a data base to obtain comparison results, and judging whether identification passes or not according to the comparison results; if identification passes, allowing access to encrypted data in the mobile data storing device. With the adoption of the method, the users are not needed to keep long-string digital codes in mind and the safe storage environment of the encrypted data is guaranteed; the encrypted data of the mobile data storing device are used only after being decrypted, and unencrypted data in the mobile data storing device can be used directly. The invention further discloses the mobile data storing device.
Description
Technical field
The present invention relates to field of data storage, particularly a kind of data decryption method of mobile data storage device and mobile data storage device.
Background technology
Along with the arrival of large data age, to the storage of data with use operation more and more frequent in people's daily life, and the restriction in use procedure not restricted time and place; Some data relates to individual, enterprise even the privacy secret of country, so the safety of data is more and more important to individual, enterprise and even whole nation's security.Instantly data security be exactly guarantee safety in its storage and the process of carrying.
At present, some safety feature products storing for data and carry on the market all still adopt the mode of traditional password formula encryption mostly, in use still need to input a series of numerical ciphers to the data of safe storage.Numerical ciphers in use exists a fatal problem needs user constantly to keep firmly in mind exactly, once forget or lose, is difficult to give for change.
Summary of the invention
The object of this invention is to provide a kind of data decryption method and mobile data storage device of mobile data storage device, do not need user to go to keep link digitals password firmly in mind, guarantee again the storage environment of enciphered data safety simultaneously; And this mobile data storage device only needs to be decrypted rear use to enciphered data, can directly use for data unencrypted in mobile data storage device.
For solving the problems of the technologies described above, the invention provides a kind of data decryption method of mobile data storage device, comprising:
Gather the predetermined biological characteristic of user, character pair in described predetermined biological characteristic and database is carried out contrast and obtains comparing result, and judge to identify whether to pass through according to described comparing result;
If be identified by, then allow the enciphered data in access mobile data storage device.
Wherein, the predetermined biological characteristic of described collection user, and identify described predetermined biological characteristic, comprising:
Gather facial image, and pre-service is carried out to described facial image, obtain candidate face region;
Screening is positioned to described candidate face region, obtains available human face region;
Extract the unique point of described available human face region, and character pair point in described unique point and characteristic point data storehouse is contrasted, obtain comparing result;
Judge whether to be identified by according to described comparing result.
Wherein, pre-service is carried out to described facial image, obtains candidate face region, comprising:
YC_bC_r colour model is utilized to set up facial image model;
Similarity Measure and binary segmentation process are carried out to described facial image model, obtains bianry image;
Filtering and eliminating noise process is carried out to described bianry image, obtains candidate face region.
Wherein, screening is positioned to described candidate face region, obtains available human face region, comprising:
Utilize predetermined geometric properties to screen described candidate face region, the primary dcreening operation being met described predetermined geometric properties selects human face region;
Select human face region to position screening to described primary dcreening operation, obtain available human face region.
Wherein, select human face region to position screening to described primary dcreening operation, obtain available human face region, comprising:
Select human face region to carry out eyes location to described primary dcreening operation, judge each eyes positioning result whether in corresponding predeterminable area;
If not, then point out and do not locate unsuccessfully at the eyes of corresponding region, make user carry out corresponding movement according to prompting;
If so, then prompting location is correct, carries out face location to described candidate face region, judges face positioning result whether in corresponding predeterminable area;
If not, then point out face to locate unsuccessfully, make user carry out corresponding movement according to prompting;
If so, then prompting location is correct, obtains available human face region.
Wherein, described localization process comprises:
Utilize the red feature location face of YIQ color space;
Utilize the image complexity location eyes of gray level image.
The invention provides a kind of mobile data storage device, comprising:
Gather the acquisition component of the predetermined biological characteristic of user;
Be connected with described acquisition component, identify described predetermined biological characteristic, obtain the microprocessor of the steering order allowing access enciphered data;
Be connected with described microprocessor, open the USB module of enciphered data path according to described steering order;
Be connected with described USB module, the data storage part of storage encryption data.
Wherein, described acquisition component is specially: facial image location and the image acquisition component gathered.
Wherein, described USB module comprises:
The communication interface be connected with external device (ED);
Be connected with described communication interface respectively, the USB bridge module that described data storage part and described microprocessor are connected.
Wherein, described microprocessor comprises:
Be connected with described image acquisition component, the facial image collected is analyzed, obtain the microprocessor chip of the steering order allowing visit data;
Be connected with described microprocessor chip, control the working mode control circuit of operating mode instruction direct-cut operation;
Be connected with described USB bridge module, sending controling instruction controls the 12C port of described USB bridge module.
Wherein, described image acquisition component also comprises:
The indicating device of instruction face positioning states.
Wherein, also comprise: be connected with described USB module, the display unit of designation data transmission state.
The data decryption method of mobile data storage device provided by the present invention and mobile data storage device, comprise: the predetermined biological characteristic gathering user, character pair in described predetermined biological characteristic and database is carried out contrast and obtains comparing result, and judge to identify whether to pass through according to described comparing result; If be identified by, then allow the enciphered data in access mobile data storage device;
First the method provides the predetermined biological characteristic gathering user, and identifies the predetermined biological characteristic gathered, and being identified by is then deciphering; By predetermined biological characteristic as password; Therefore this mobile data storage device does not need user to go to keep link digitals password firmly in mind, guarantees again the storage environment of enciphered data safety simultaneously; Secondly data storage part can be divided into zones of different by this mobile data storage device, and some are for storing the enciphered data by predetermined biological feature encryption, and other are for storing non-encrypted data; For non-encrypted data when this mobile data storage device is connected with the external world, user just can see this region, and directly can obtain non-encrypted data; Be then hiding for encrypted data area, only have and just can obtain enciphered data after decryption; Namely this mobile data storage device only needs to be decrypted rear use to enciphered data, can directly use for data unencrypted in mobile data storage device.
Accompanying drawing explanation
In order to be illustrated more clearly in the embodiment of the present invention or technical scheme of the prior art, be briefly described to the accompanying drawing used required in embodiment or description of the prior art below, apparently, accompanying drawing in the following describes is only embodiments of the invention, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to the accompanying drawing provided.
The process flow diagram of the data decryption method of the mobile data storage device that Fig. 1 provides for the embodiment of the present invention;
Fig. 2 is the structured flowchart of mobile data storage device provided by the invention;
Fig. 3 is the structured flowchart of another mobile data storage device provided by the invention;
Fig. 4 is the structured flowchart of another mobile data storage device provided by the invention.
Embodiment
Core of the present invention is to provide a kind of data decryption method and mobile data storage device of mobile data storage device, does not need user to go to keep link digitals password firmly in mind, guarantees again the storage environment of enciphered data safety simultaneously; And this mobile data storage device only needs to be decrypted rear use to enciphered data, can directly use for data unencrypted in mobile data storage device.
For making the object of the embodiment of the present invention, technical scheme and advantage clearly, below in conjunction with the accompanying drawing in the embodiment of the present invention, technical scheme in the embodiment of the present invention is clearly and completely described, obviously, described embodiment is the present invention's part embodiment, instead of whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art, not making the every other embodiment obtained under creative work prerequisite, belong to the scope of protection of the invention.
Please refer to Fig. 1, the process flow diagram of the data decryption method of the mobile data storage device that Fig. 1 provides for the embodiment of the present invention; The method can comprise:
The predetermined biological characteristic of S100, collection user, carries out contrast by character pair in described predetermined biological characteristic and database and obtains comparing result, and judges to identify whether to pass through according to described comparing result;
If S110 is identified by, then allow the enciphered data in access mobile data storage device.
Wherein, predetermined biological characteristic here can be facial image, pupil feature, or fingerprint characteristic etc. has the feature of biological uniqueness, can be single features as only gathered facial image, also can be that composite character is as gathered facial image and fingerprint etc.; Namely the number of predetermined biological characteristic and kind are not limited here.The detailed process identified and method are wanted and selected biological characteristic correspondence; If selected fingerprint as predetermined biological characteristic then identifying carry out fingerprint characteristic contrast exactly; If selected facial image is as predetermined biological characteristic, identifying carries out facial image Characteristic Contrast etc. exactly.Whether after obtaining Characteristic Contrast result, also need the predetermined biological characteristic judging to gather by identifying, criterion here can need to set according to user.As Characteristic Contrast percent of pass reaches predetermined value etc.
Wherein, here after the predetermined living things feature recognition of the correspondence of user is passed through, be namely equivalent to the authority that user has access enciphered data, also namely complete the deciphering to enciphered data.Here mobile data storage device can a storage encryption data, and can be understood as whole dish is all a region, for storage encryption data; Preferably, in order to the convenience that the utilization factor and user that improve mobile data storage device use, agility, can be divided into zones of different by the storage area in mobile data storage device, part area stores enciphered data, the enciphered data of accessing this region needs to carry out living things feature recognition; Another part area stores non-encrypted data, user can directly conduct interviews.Further, when mobile data storage device and the external world arrange be connected time, only can show non-encrypted region, can not encryption section be shown, only have after user biological feature is identified by, just can show this region and allow user to conduct interviews acquisition enciphered data to this region.
Wherein, after data deciphering, user can conduct interviews to enciphered data, after user has obtained enciphered data, enciphered data access path has needed to be closed, and can be whether the free time by detecting enciphered data access path exceedes threshold value here, if so, then enciphered data access path is closed.
Based on technique scheme, the data decryption method of the mobile data storage device that the embodiment of the present invention provides, first the method provides the predetermined biological characteristic gathering user, and identifies the predetermined biological characteristic gathered, and being identified by is then deciphering; By predetermined biological characteristic as password; Therefore this mobile data storage device does not need user to go to keep link digitals password firmly in mind, guarantees again the storage environment of enciphered data safety simultaneously; Secondly data storage part can be divided into zones of different by this mobile data storage device, and some are for storing the enciphered data by predetermined biological feature encryption, and other are for storing non-encrypted data; For non-encrypted data when this mobile data storage device is connected with the external world, user just can see this region, and directly can obtain non-encrypted data; Be then hiding for encrypted data area, only have and just can obtain enciphered data after decryption; Namely this mobile data storage device only needs to be decrypted rear use to enciphered data, can directly use for data unencrypted in mobile data storage device.
Based on technique scheme, the predetermined biological characteristic of described collection user, and identify described predetermined biological characteristic, can comprise:
Gather facial image, and pre-service is carried out to described facial image, obtain candidate face region;
Wherein, collection facial image here being carried out image acquisition, when image not detected, automatically can close image acquisition component, to reduce power consumption can be opened the collection switch on mobile data storage device by user after.
Wherein, this step is Image semantic classification process, and concrete preprocessing process is:
YC_bC_r colour model is utilized to set up facial image model;
Similarity Measure and binary segmentation process are carried out to described facial image model, obtains bianry image;
Filtering and eliminating noise process is carried out to described bianry image, obtains candidate face region.
Wherein, the colour model carrying out modeling can have a lot, here owing to using mobile data storage device, consider mobile data storage device singularity, the size of such as device, storage space, computational accuracy etc., test various colour model, final selected YC_bC_r colour model sets up facial image model.Mathematical morphology can be utilized to carry out filtering and eliminating noise process to bianry image.
Screening is positioned to described candidate face region, obtains available human face region;
Wherein, this step is screening process, is screened by location, to improve the accuracy of image recognition.Obtaining the more complete facial image meeting location regulation, is to obtain abundant face characteristic accurately; The organ that therefore eyes and face or nose etc. can be utilized here to have obvious characteristic carries out facial image location; Determine a plane at 3, therefore can select two eyes and face or two eyes and nose here.The selected feature with the organ according to selection carries out organ identification and location; As selected two eyes and face, then utilize face's organ face in the red feature of YIQ color space to locate face, the image complexity simultaneously by calculating gray level image completes the location to eyes.Namely the red feature location face of YIQ color space is utilized; Utilize the image complexity location eyes of gray level image.Rely on and Face detection is completed to the location of face and eyes.Detailed process can be:
Eyes location is carried out to described candidate face region, judges each eyes positioning result whether in corresponding predeterminable area;
If so, then face location is carried out to described candidate face region, judge face positioning result whether in corresponding predeterminable area;
If so, be then located through, obtain available human face region.
Wherein, first by determining two eyes whether in the presumptive area of correspondence, if do not exist, then adjust, until two eyes are all respectively in the region of correspondence, after two eyes are all in the region of correspondence, determine face whether in the region of correspondence, if not then adjust the position of face, until face also then completes location in presumptive area; Generally, two eyes all in presumptive area after, face also can in presumptive area, but in order to improve the accurately fixed of Face detection, prevent, the presumptive area corresponding due to each eyes is larger, during location, two eyes are all amesiality, if at this moment do not position face, facial image can be caused amesiality, well can not carry out face characteristic extraction.In order to complete location faster and better, when facial image is devious, can remind user, preventing user from occurring the situation of blindly mobile face.Again due to the restriction of the actual conditions of mobile data storage device, display screen can not be used to carry out the display of Face detection, preferably, described image acquisition component also comprises: the indicating device of instruction face positioning states.Detailed process can be as follows:
Select human face region to carry out eyes location to described primary dcreening operation, judge each eyes positioning result whether in corresponding predeterminable area;
If not, then point out and do not locate unsuccessfully at the eyes of corresponding region, make user carry out corresponding movement according to prompting;
If so, then prompting location is correct, carries out face location to described candidate face region, judges face positioning result whether in corresponding predeterminable area;
If not, then point out face to locate unsuccessfully, make user carry out corresponding movement according to prompting;
If so, then prompting location is correct, obtains available human face region.
Wherein, prompting here can be by voice message, also can be as LED indicates with pilot lamp.Therefore, preferably, described indicating device is specially LED light and/or voice message parts.For LED, concrete position fixing process is as follows:
By the decomposition refinement to above-mentioned flow process, the correction of human face region owing to directly seeing correct image without display screen, but in order to also can be more blunt complete correction, have employed LED put out bright state distinguish.
Utilize determine a plan view at 3, be provided with the correction of three LED for human face region.Determine a plane, be exactly first determine straight line by 2, determine that be exactly by the identification to people's eyes at 2 of straight line for so-called 3, when two all in the region arranged, the LED of interior both sides lights simultaneously; If there is an eye to exceed region, is then partial to side LED and extinguishes, now can carry out translation to extinguishing side away from LED, lighting until extinguish LED; When both sides LED lights simultaneously, then carry out determination thirdly, and this thirdly corresponding be face, when eyes are determined at the regional level, upper and lower translation is only needed for face until middle LED lights just can determine that face drops in human face region.Only have three LED light simultaneously just can be correct Feature point recognition and collection are carried out to facial image.
Here in order to improve the speed of image recognition, can carry out prescreen before the screening of location, the shape due to face is simple and easy to identify very much, therefore, by comparing with the geometric properties stored, can screen candidate face region.Here geometric properties can be the length breadth ratio of face, area and Euler's numbers.Detailed process is:
Utilize predetermined geometric properties to screen described candidate face region, the primary dcreening operation being met described predetermined geometric properties selects human face region;
Select human face region to position screening to described primary dcreening operation, obtain available human face region.
Extract the unique point of described available human face region, and character pair point in described unique point and characteristic point data storehouse is contrasted, obtain comparing result;
Judge whether to be identified by according to described comparing result.
Wherein, here judge whether to be identified by according to described comparing result, the determination carrying out criterion can be needed according to user, such as unique point has 30, each unique point can obtain meeting and incongruent result, or each unique point can have the value of a similarity, at this moment can define several unique point met according to user just can be considered as passing through, or how much the value of the similarity of each unique point can assert that this unique point meets if reaching, define several unique point met according to user more just can be considered as by or ratio shared by the unique point that meets.
Wherein, criterion here can be modified according to the demand of user.
Embodiments provide the data decryption method of mobile data storage device, user can not be needed to go to keep link digitals password firmly in mind, guarantee again the storage environment of enciphered data safety simultaneously.
Be introduced the mobile data storage device that the embodiment of the present invention provides below, mobile data storage device described below can mutual corresponding reference with the data decryption method of above-described mobile data storage device.
Please refer to Fig. 2, Fig. 2 is the structured flowchart of mobile data storage device provided by the invention; This mobile data storage device can comprise:
Gather the acquisition component 100 of the predetermined biological characteristic of user;
Be connected with described acquisition component, identify described predetermined biological characteristic, obtain the microprocessor 200 of the steering order allowing access enciphered data;
Be connected with described microprocessor 200, open the USB module 300 of enciphered data path according to described steering order;
Be connected with described USB module, the data storage part 400 of storage encryption data.
Wherein, predetermined biological characteristic here can be facial image, pupil feature, or fingerprint characteristic etc. has the feature of biological uniqueness, can be single features as only gathered facial image, also can be that composite character is as gathered facial image and fingerprint etc.; Namely the number of predetermined biological characteristic and kind are not limited here.
The predetermined biological characteristic that acquisition component 100 specifically will gather as required is determined, such as, will gather fingerprint, then acquisition component 100 is fingerprint capturer; Gather facial image, then acquisition component 100 is that image acquisition component is as camera.
In other embodiments, acquisition component 100 can be directly or indirectly obtain any functional module of predetermined biological characteristic, such as: carry out face collection by the camera on the main equipment that is connected with described mobile data storage device.Mobile data storage device is connected to main equipment by user, and by the camera of the software startup main equipment end of main equipment end, carry out face collection, flash memory device carries out detection and indentification to the face collected.
Microprocessor 200 is connected with acquisition component 100, identifies the predetermined biological characteristic that acquisition component 100 collects, and according to recognition result, controls USB module 300.Concrete, microprocessor 200 processes the facial image collected and identifies, is identified by, then microprocessor 200 obtains the steering order allowing access enciphered data; If identify and do not pass through, then microprocessor 200 can not get the steering order allowing access enciphered data, can be specifically do not generate instruction, or generates disable instruction, to make can not obtain enciphered data by the user identified.
Open enciphered data path when USB module 300 receives and allows the steering order of access enciphered data, make user can obtain the enciphered data of needs; When USB module 300 does not receive any steering order or receives illegal steering order, do not open enciphered data path, make user to access enciphered data.
Data storage part 400 can a storage encryption data, and can be understood as whole dish is all a region, for storage encryption data; Preferably, in order to the convenience that the utilization factor and user that improve data storage part 400 use, agility, can be divided into zones of different by the storage area in data storage part 400, part area stores enciphered data, the enciphered data of accessing this region needs to carry out living things feature recognition; Another part area stores non-encrypted data, user can directly conduct interviews.Further, when data storage part 400 and the external world arrange be connected time, only can show non-encrypted region, can not encryption section be shown, only have after user biological feature is identified by, just can show this region and allow user to be conducted interviews by USB module 300.
Such as: this mobile data storage device is hard disk, then just can be able to realize being encrypted the data of hard drive internal encryption section with the microprocessor with image recognition processing function by increasing camera, identified collecting user's facial image by camera, by after USB module can be utilized to be encrypted data access; This mobile data storage device is USB flash disk, then just can be able to realize being encrypted USB flash disk internal cryptographic data with the microprocessor chip with fingerprint recognition processing capacity by increasing fingerprint capturer, carry out identification as eigenwert comparison by fingerprint capturer to collecting user fingerprints, by after USB module can be utilized to be encrypted data access.
Based on technique scheme, the mobile data storage device that the embodiment of the present invention provides, this mobile data storage device does not need user to go to keep link digitals password firmly in mind, guarantees again the storage environment of enciphered data safety simultaneously; Secondly data storage part can be divided into two regions by this mobile data storage device, one for storing the enciphered data by predetermined biological feature encryption, another is for storing non-encrypted data; For non-encrypted data when this mobile data storage device is connected with the external world, user just can see this region, and directly can obtain non-encrypted data; Be then hiding for encrypted data area, only have and just can obtain enciphered data after decryption; Namely this mobile data storage device only needs to be decrypted rear use to enciphered data, can directly use for data unencrypted in mobile data storage device.
Based on technique scheme, described acquisition component 100 is specially: facial image location and the image acquisition component gathered.
Wherein, image acquisition component here can be camera, and the size of camera can be determined according to the size of mobile mobile data storage device.
Wherein, corresponding microprocessor 200 identifies the facial image that image acquisition component collects exactly, and sends steering order according to recognition result.
Concrete identifying can be:
Gather facial image, and pre-service is carried out to described facial image, obtain candidate face region; I.e. preprocessing process;
Screening is positioned to described candidate face region, obtains available human face region; I.e. screening process;
Extract the unique point of described available human face region, and character pair point in described unique point and characteristic point data storehouse is contrasted, obtain comparing result; Judge whether to be identified by according to described comparing result; I.e. identifying.
Above-mentioned concrete preprocessing process can be:
YC_bC_r colour model is utilized to set up facial image model;
Similarity Measure and binary segmentation process are carried out to described facial image model, obtains bianry image;
Filtering and eliminating noise process is carried out to described bianry image, obtains candidate face region.
Wherein, the colour model carrying out modeling can have a lot, here owing to using mobile data storage device, consider mobile data storage device singularity, the size of such as device, storage space, computational accuracy etc., test various colour model, final selected YC_bC_r colour model sets up facial image model.Mathematical morphology can be utilized to carry out filtering and eliminating noise process to bianry image.
Above-mentioned concrete screening process can be:
Utilize predetermined geometric properties to screen described candidate face region, the primary dcreening operation being met described predetermined geometric properties selects human face region;
Select human face region to position screening to described primary dcreening operation, obtain available human face region.
Wherein, the shape due to face is simple and easy to identify very much, therefore, by comparing with the geometric properties stored, can screen candidate face region.Here geometric properties can be the length breadth ratio of face, area and Euler's numbers.
Screening is positioned to the human face region after preliminary screening, obtain the more complete facial image meeting location regulation, obtain abundant face characteristic accurately, need the organ by eyes and face or nose etc. with obvious characteristic to carry out facial image location; Determine a plane at 3, therefore can select two eyes and face or two eyes and nose here.The selected feature with the organ according to selection carries out organ identification and location; As selected two eyes and face, then utilize face's organ face in the red feature of YIQ color space to locate face, the image complexity simultaneously by calculating gray level image completes the location to eyes.Rely on and Face detection is completed to the location of face and eyes.Detailed process can be:
First by determining two eyes whether in the presumptive area of correspondence, if do not exist, then adjust, until two eyes are all respectively in the region of correspondence, after two eyes are all in the region of correspondence, determine face whether in the region of correspondence, if not then adjust the position of face, until face also then completes location in presumptive area; Generally, two eyes all in presumptive area after, face also can in presumptive area, but in order to improve the accurately fixed of Face detection, prevent, the presumptive area corresponding due to each eyes is larger, during location, two eyes are all amesiality, if at this moment do not position face, facial image can be caused amesiality, well can not carry out face characteristic extraction.In order to complete location faster and better, when facial image is devious, can remind user, preventing user from occurring the situation of blindly mobile face.Again due to the restriction of the actual conditions of mobile data storage device, display screen can not be used to carry out the display of Face detection, preferably, described image acquisition component also comprises: the indicating device of instruction face positioning states.Detailed process can be as follows:
Select human face region to carry out eyes location to described primary dcreening operation, judge each eyes positioning result whether in corresponding predeterminable area;
If not, then point out and do not locate unsuccessfully at the eyes of corresponding region, make user carry out corresponding movement according to prompting;
If so, then prompting location is correct, carries out face location to described candidate face region, judges face positioning result whether in corresponding predeterminable area;
If not, then point out face to locate unsuccessfully, make user carry out corresponding movement according to prompting;
If so, then prompting location is correct, obtains available human face region.
Wherein, prompting here can be by voice message, also can be as LED indicates with pilot lamp.Therefore, preferably, described indicating device is specially LED light and/or voice message parts.For LED, concrete position fixing process is as follows:
By the decomposition refinement to above-mentioned flow process, the correction of human face region owing to directly seeing correct image without display screen, but in order to also can be more blunt complete correction, have employed LED put out bright state distinguish.
Utilize determine a plan view at 3, be provided with the correction of three LED for human face region.Determine a plane, be exactly first determine straight line by 2, determine that be exactly by the identification to people's eyes at 2 of straight line for so-called 3, when two all in the region arranged, the LED of interior both sides lights simultaneously; If there is an eye to exceed region, is then partial to side LED and extinguishes, now can carry out translation to extinguishing side away from LED, lighting until extinguish LED; When both sides LED lights simultaneously, then carry out determination thirdly, and this thirdly corresponding be face, when eyes are determined at the regional level, upper and lower translation is only needed for face until middle LED lights just can determine that face drops in human face region.Only have three LED light simultaneously just can be correct Feature point recognition and collection are carried out to facial image.
Optionally, please refer to USB module 300 described in Fig. 3 to comprise:
The communication interface 310 be connected with external device (ED);
Be connected with described communication interface respectively, the USB bridge module 320 that described data storage part and described microprocessor are connected.
Wherein, user can directly by unencrypted data in communication interface access mobile data storage device.
Optionally, described USB bridge module also comprises:
Be connected with described communication interface respectively, the digital encryption parts that described data storage part and described microprocessor are connected.
Wherein, by increasing digital encryption parts, then this mobile data storage device can have bio-identification and numeral identification two processes, can redundancy arrange each other, improve dirigibility and the reliability of mobile data storage device, also can be identified by simultaneously can be encrypted data transmission, to improve data security.
Optionally, please refer to microprocessor 200 described in Fig. 3 to comprise:
Be connected with described image acquisition component, the facial image collected is analyzed, obtain the microprocessor chip 210 of the steering order allowing visit data;
Be connected with described microprocessor chip, control the working mode control circuit 220 of operating mode instruction direct-cut operation;
Wherein, mode of operation is here for gathering facial image and not gathering facial image.Optionally, described working mode control circuit comprises startup button.Voice command can certainly be passed through.
Be connected with described USB bridge module, sending controling instruction controls the 12C port 230 of described USB bridge module.
Optionally, described data storage part is specially hard disk or USB flash disk; Wherein hard disk comprises: solid state hard disc and mechanical hard disk.
Optionally, please refer to Fig. 4 mobile data storage device also to comprise:
Be connected with described USB module, the display unit 500 of designation data transmission state.
Wherein, can indicate data transmission state by arranging display unit, as utilized LED, after data are transmitted, LED is bright, to point out user data transmission to complete, improves Consumer's Experience.
Based on technique scheme, the specific works process of this mobile data storage device can be:
Data storage part is mainly used in the storage of data and closes number of passes according to all storing with ciphertext, is connected with USB bridge module; Image acquisition component is mainly used in location and the collection of facial image; Microprocessor need support usb protocol, and mainly for the treatment of the image operation analysis that image acquisition component gathers, it connects image acquisition component and USB bridge module, and is sent out the duty of clock signal control USB bridge module by I2C port; USB bridge module support hardware AES-256 position algorithm for encryption, working mode control circuit module is then for controlling the direct-cut operation of operating mode instruction.
There is a mobile data storage device for face encryption function, it self with an image acquisition component, be used for fixation and recognition and gather face figure; The microprocessor (CPU) of a support usb protocol, connect USB bridge module, for the treatment of image acquisition component collection view data and the order providing final comparison to pass through makes its data channel of opening an account complete data storage part data transmission as inner in solid state hard disc (SSD) to USB bridge module.Recognition of face flow process described above is: when device connects PC or other compatible equipment, image acquisition component can be opened by physical button and carry out facial image detection and location, first facial model is set up with YC_bC-r color space, and Similarity Measure and binary segmentation process are carried out to whole model, then mathematical morphology is utilized to carry out filtering to reach the impact of stress release treatment to export the human face region of candidate on the bianry image obtained, utilize the length breadth ratio of face, area and Euler's numbers complete preliminary screening to candidate human face region simultaneously.After filtering out available human face region, utilize face's organ face in the red feature of YIQ color space to locate face, the image complexity simultaneously by calculating gray level image completes the location to eyes.After relying on the location to face and eyes, extract the comparison of unique point for final facial image of each organ.After completing the comparison of facial image, come control data memory unit such as solid state hard disc (SSD) or mechanical hard disk and external USB port data by the I2C signal by hiding compiling between CPU and USB bridge module and transmit.
Based on technique scheme, the mobile data storage device that the embodiment of the present invention provides, this mobile data storage device does not need user to go to keep link digitals password firmly in mind, guarantees again the storage environment of enciphered data safety simultaneously; Secondly data storage part can be divided into two regions by this mobile data storage device, one for storing the enciphered data by predetermined biological feature encryption, another is for storing non-encrypted data; For non-encrypted data when this mobile data storage device is connected with the external world, user just can see this region, and directly can obtain non-encrypted data; Be then hiding for encrypted data area, only have and just can obtain enciphered data after decryption; Namely this mobile data storage device only needs to be decrypted rear use to enciphered data, can directly use for data unencrypted in mobile data storage device.And position fixing process and data transmission state can be pointed out.
In instructions, each embodiment adopts the mode of going forward one by one to describe, and what each embodiment stressed is the difference with other embodiments, between each embodiment identical similar portion mutually see.For device disclosed in embodiment, because it corresponds to the method disclosed in Example, so description is fairly simple, relevant part illustrates see method part.
Professional can also recognize further, in conjunction with unit and the algorithm steps of each example of embodiment disclosed herein description, can realize with electronic hardware, computer software or the combination of the two, in order to the interchangeability of hardware and software is clearly described, generally describe composition and the step of each example in the above description according to function.These functions perform with hardware or software mode actually, depend on application-specific and the design constraint of technical scheme.Professional and technical personnel can use distinct methods to realize described function to each specifically should being used for, but this realization should not thought and exceeds scope of the present invention.
The software module that the method described in conjunction with embodiment disclosed herein or the step of algorithm can directly use hardware, processor to perform, or the combination of the two is implemented.Software module can be placed in the storage medium of other form any known in random access memory (RAM), internal memory, ROM (read-only memory) (ROM), electrically programmable ROM, electrically erasable ROM, register, hard disk, moveable magnetic disc, CD-ROM or technical field.
Above the data decryption method of mobile data storage device provided by the present invention and mobile data storage device are described in detail.Apply specific case herein to set forth principle of the present invention and embodiment, the explanation of above embodiment just understands method of the present invention and core concept thereof for helping.It should be pointed out that for those skilled in the art, under the premise without departing from the principles of the invention, can also carry out some improvement and modification to the present invention, these improve and modify and also fall in the protection domain of the claims in the present invention.
Claims (12)
1. a data decryption method for mobile data storage device, is characterized in that, comprising:
Gather the predetermined biological characteristic of user, character pair in described predetermined biological characteristic and database is carried out contrast and obtains comparing result, and judge to identify whether to pass through according to described comparing result;
If be identified by, then allow the enciphered data in access mobile data storage device.
2. data decryption method as claimed in claim 1, is characterized in that, the predetermined biological characteristic of described collection user, and identifies described predetermined biological characteristic, comprising:
Gather facial image, and pre-service is carried out to described facial image, obtain candidate face region;
Screening is positioned to described candidate face region, obtains available human face region;
Extract the unique point of described available human face region, and character pair point in described unique point and characteristic point data storehouse is contrasted, obtain comparing result;
Judge whether to be identified by according to described comparing result.
3. data decryption method as claimed in claim 2, is characterized in that, carry out pre-service to described facial image, obtain candidate face region, comprising:
YC_bC_r colour model is utilized to set up facial image model;
Similarity Measure and binary segmentation process are carried out to described facial image model, obtains bianry image;
Filtering and eliminating noise process is carried out to described bianry image, obtains candidate face region.
4. data decryption method as claimed in claim 3, is characterized in that, position screening, obtain available human face region, comprising described candidate face region:
Utilize predetermined geometric properties to screen described candidate face region, the primary dcreening operation being met described predetermined geometric properties selects human face region;
Select human face region to position screening to described primary dcreening operation, obtain available human face region.
5. data decryption method as claimed in claim 4, is characterized in that, select human face region to position screening to described primary dcreening operation, obtain available human face region, comprising:
Select human face region to carry out eyes location to described primary dcreening operation, judge each eyes positioning result whether in corresponding predeterminable area;
If not, then point out and do not locate unsuccessfully at the eyes of corresponding region, make user carry out corresponding movement according to prompting;
If so, then prompting location is correct, carries out face location to described candidate face region, judges face positioning result whether in corresponding predeterminable area;
If not, then point out face to locate unsuccessfully, make user carry out corresponding movement according to prompting;
If so, then prompting location is correct, obtains available human face region.
6. data decryption method as claimed in claim 5, it is characterized in that, described localization process comprises:
Utilize the red feature location face of YIQ color space;
Utilize the image complexity location eyes of gray level image.
7. a mobile data storage device, is characterized in that, comprising:
Gather the acquisition component of the predetermined biological characteristic of user;
Be connected with described acquisition component, identify described predetermined biological characteristic, obtain the microprocessor of the steering order allowing access enciphered data;
Be connected with described microprocessor, open the USB module of enciphered data path according to described steering order;
Be connected with described USB module, the data storage part of storage encryption data.
8. mobile data storage device as claimed in claim 7, it is characterized in that, described acquisition component is specially: facial image location and the image acquisition component gathered.
9. mobile data storage device as claimed in claim 8, it is characterized in that, described USB module comprises:
The communication interface be connected with external device (ED);
Be connected with described communication interface respectively, the USB bridge module that described data storage part and described microprocessor are connected.
10. mobile data storage device as claimed in claim 9, it is characterized in that, described microprocessor comprises:
Be connected with described image acquisition component, the facial image collected is analyzed, obtain the microprocessor chip of the steering order allowing visit data;
Be connected with described microprocessor chip, control the working mode control circuit of operating mode instruction direct-cut operation;
Be connected with described USB bridge module, sending controling instruction controls the 12C port of described USB bridge module.
11. mobile data storage devices as claimed in claim 8, it is characterized in that, described image acquisition component also comprises:
The indicating device of instruction face positioning states.
12. mobile data storage devices as described in any one of claim 7 to 11, is characterized in that, also comprise: be connected with described USB module, the display unit of designation data transmission state.
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