CN103577764A - Document encryption and decryption method and electronic device with document encryption and decryption function - Google Patents
Document encryption and decryption method and electronic device with document encryption and decryption function Download PDFInfo
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- CN103577764A CN103577764A CN201210262998.3A CN201210262998A CN103577764A CN 103577764 A CN103577764 A CN 103577764A CN 201210262998 A CN201210262998 A CN 201210262998A CN 103577764 A CN103577764 A CN 103577764A
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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
- G06F21/62—Protecting access to data via a platform, e.g. using keys or access control rules
- G06F21/6209—Protecting access to data via a platform, e.g. using keys or access control rules to a single file or object, e.g. in a secure envelope, encrypted and accessed using a key, or with access control rules appended to the object itself
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F2221/00—Indexing scheme relating to security arrangements for protecting computers, components thereof, programs or data against unauthorised activity
- G06F2221/21—Indexing scheme relating to G06F21/00 and subgroups addressing additional information or applications relating to security arrangements for protecting computers, components thereof, programs or data against unauthorised activity
- G06F2221/2107—File encryption
Abstract
A document encryption and decryption method includes the steps of a, responding to an encryption signal to acquire face image data; b, extracting encryption face characteristic values; c, storing the encryption face characteristic values in a to-be-encrypted electronic document; d, responding to a decryption signal to acquire face image data; e, extracting decryption face characteristic values; f, comparing the decryption face characteristic values with face characteristic values stored in a to-be-opened electronic document, if matched, sending a decryption signal to open a to-be-decrypted electronic document. A face recognition mode is adopted in the document encryption and decryption method, so that breach of confidence is avoided due to difficulty in peeping and stealing of documents, electronic documents in need of protection are locked when attempts of illegal users to peep the electronic documents are detected. The invention further provides an electronic device with a document encryption and decryption function.
Description
Technical field
The present invention relates to a kind of document encipher-decipher method, particularly a kind ofly utilize recognition of face to carry out document time slot scrambling and there is the electronic installation of document encryption and decryption functions.
Background technology
Electronic document is carried out to secret mode and generally refer to document is encrypted to protection, only have and input after the user cipher password of striving for, could read and write the electronic document of encrypting.Traditional document be encrypted to method have: by keyboard input one group of special character combination password, by touch panel device, input a special slippery sequence or gesture etc.The shortcoming of this key passwords or gesture password encryption is easily by people, to be peeped or steal and divulge a secret, or sometimes oneself forgets Password and cannot open the electronic document of encryption, and this type of encryption method is both dumb also dangerous.In addition also have a kind of emerging encrypting fingerprint decryption method, its shortcoming is to gather difficulty, to every user, all must configure a special fingerprint capturer, has increased cost, and very inconvenient in the use, and application has certain difficulty.
In the general secrecy provision of carrying out for electronic document, only for reading of electronic document, password password is set and protects, just can read and write after only having the user password that input is correct.But, cannot prevent that disabled user from cracking secure routine, can not lock this electronic document.
Summary of the invention
In view of this, the invention provides a kind of convenience and be not easy to be cracked utilize recognition of face to carry out document encipher-decipher method and there is the electronic installation of the document encryption and decryption functions.
An encipher-decipher method, comprises the steps:
A. respond a coded signal and obtain facial image data;
B. extract the face encryption eigenwert in described facial image data;
C. described face encryption eigenwert is encrypted electronic document to be encrypted as encryption key, and face encryption eigenwert is stored in electronic document to be encrypted;
D. respond a decrypted signal and obtain facial image data;
E. extract the deciphering face characteristic value in described facial image data;
F. the face characteristic value of storing in the electronic document of deciphering face characteristic value and wish unlatching is compared, if deciphering face characteristic value is consistent with the face characteristic value of storing in electronic document, or error is in a preset range, is judged as coupling, enters step g; Otherwise, finish;
G. send a decrypted signal, enter step h;
H. respond described decrypted signal and open the electronic document of described wish deciphering, and this electronic document content is shown.
, comprise the steps:
A. respond a coded signal and obtain facial image data;
B. extract the face encryption eigenwert in described facial image data;
C. described face encryption eigenwert is encrypted electronic document to be encrypted as encryption key, and face encryption eigenwert is stored in electronic document to be encrypted.
A decryption method, comprises the steps:
A. respond a decrypted signal and obtain facial image data;
B. extract the deciphering face characteristic value in described facial image data;
C. the face characteristic value of storing in the electronic document of deciphering face characteristic value and wish unlatching is compared, if deciphering face characteristic value is consistent with the face characteristic value of storing in electronic document, or error is in a preset range, is judged as coupling, enters step g 1; Otherwise, be judged as and do not mate, enter step g 2; Otherwise, finish;
D. send a decrypted signal, enter step h;
E. respond described decrypted signal and open the electronic document of described wish deciphering, and this electronic document content is shown.
An electronic installation with document encryption and decryption functions, this device comprises facial image acquiring unit, storage unit, main control unit and display unit, and described memory cell contains at least one electronic document, and described main control unit comprises:
People's face data acquisition module, obtains facial image data for what respond that a coded signal or decrypted signal control facial image acquiring unit;
Face characteristic extraction module, for extracting the face characteristic value of described facial image data;
Face characteristic comparing module, for the face characteristic value of when electronic document is decrypted, the electronic document of the face characteristic value of face characteristic extraction module extraction and wish unlatching being stored, compare, judge whether the face characteristic value of storing in the face characteristic value of face characteristic extraction module extraction and the electronic document of wish unlatching mates;
Encrypting and decrypting module, when electronic document is encrypted, is stored in electronic document to be encrypted for the face characteristic value that face characteristic extraction module is extracted; When electronic document is decrypted, the face characteristic value of storing with the electronic document of wish unlatching for the face characteristic value of extracting at face characteristic comparing module judgement face characteristic extraction module when mating, sends a decrypted signal to document execution module; And,
Document execution module, opens the electronic document of described wish deciphering for responding described decrypted signal.
Document time slot scrambling in the present invention adopts recognition of face mode; be not easy to be peeped or steal and divulge a secret by people; simultaneously the document time slot scrambling in the present invention can detect in the process that whether has disabled user to attempt opening at shielded electronic document and peep, if find that there is people, peeps and locks this electronic document.
Accompanying drawing explanation
Fig. 1 is the modular structure schematic diagram in an embodiment of the present invention with the electronic installation of document function of keeping secret.
Fig. 2 is the encryption flow figure of document time slot scrambling in invention one embodiment.
Fig. 3 is deciphering and the locking flow figure of document time slot scrambling in invention one embodiment.
Main element symbol description
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100 |
| Facial |
10 |
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20 |
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30 |
| People's face |
31 |
| Face |
32 |
| Encrypting and |
33 |
| Face |
34 |
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35 |
| Peep- |
36 |
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40 |
Following embodiment further illustrates the present invention in connection with above-mentioned accompanying drawing.
Embodiment
Please refer to Fig. 1.For thering is the modular structure schematic diagram of the electronic installation 100 of document function of keeping secret in an embodiment of the present invention.Electronic installation 100 comprises facial image acquiring unit 10, storage unit 20, main control unit 30 and display unit 40, stores at least one electronic document in storage unit 20.In the present embodiment, facial image acquiring unit 10 is a camera.
People's face data acquisition module 31 obtains facial image data for what respond that a coded signal or decrypted signal control facial image acquiring unit 10.Concrete, people's face data acquisition module 31 receives after described coded signal, and controlling facial image acquiring unit 10 is that camera is taken facial image data.Wherein, described coded signal can be user and triggers the operation that the encipheror on electronic installation 100 is encrypted electronic document and produce, and described decrypted signal can be the open operation that user opens encrypted document and produces.In the present embodiment, when people's face data acquisition module 31 response one coded signal, people's face data acquisition module 31 control facial image acquiring units 10 obtain respectively one open one's eyes wide mark people face front according to, left surface according to and right flank shine; When electronic document is decrypted, people's face data acquisition module 31 is controlled facial image acquiring units 10 and is obtained facial image data of opening one's eyes wide mark people face.
Face characteristic extraction module 32 is for extracting the face characteristic value of described facial image data.Concrete, the facial image data that 32 pairs of people's face data acquisition modules of face characteristic extraction module 31 gather are carried out recognition of face, bionic technical finesse and people's face data modeling, carry out Facial Feature Analysis, extract face characteristic value.When electronic document is encrypted, the face characteristic in the described facial image data of face characteristic extraction module 32 extraction is as face encryption eigenwert; When electronic document is decrypted, the face characteristic in the described facial image data of face characteristic extraction module 32 extraction is as deciphering face characteristic value.In the present embodiment, when electronic document is encrypted, the front of target people's face that face characteristic extraction module 32 gathers people's face data acquisition module 31 respectively according to, left surface according to and right flank shine into row Facial Feature Analysis, using from front according to, left surface according to and right flank according to the mean value of the face characteristic value of extracting respectively as final face characteristic value.
When electronic document is encrypted, encrypting and decrypting module 33 is encrypted electronic document to be encrypted as encryption key for the face encryption eigenwert that face characteristic extraction module 32 is extracted, and face encryption eigenwert is stored in electronic document to be encrypted.
The face characteristic value that the electronic document that face characteristic comparing module 34 is opened for the deciphering face characteristic value when electronic document is decrypted, face characteristic extraction module 32 extracted and wish is stored compares, and judges whether the face characteristic value of storing in the electronic document of described deciphering face characteristic value and wish unlatching mates.If described deciphering face characteristic value is consistent with the face characteristic value of storing in electronic document, or error is in a preset range, is judged as coupling; Otherwise, be judged as and do not mate.
When electronic document is decrypted, encrypting and decrypting module 33 is for sending a decrypted signal according to the judged result of face characteristic comparing module 34.Concrete, the face characteristic value of storing in the electronic document of deciphering face characteristic values that face characteristic comparing module 34 judgement face characteristic extraction modules 32 extract and wish unlatching is when mating, encrypting and decrypting module 33 determines that this operation user has the authority of opening this electronic document, sends a decrypted signal to document execution module 35; The face characteristic value of storing in the electronic document of deciphering face characteristic values that face characteristic comparing module 34 judgement face characteristic extraction modules 32 extract and wish unlatching when not mating, finishes.
In the described decrypted signal of document execution module 35 response, open after the electronic document of described wish deciphering, what people's face data acquisition module 31 was controlled facial image acquiring units 10 obtains facial image data, the face characteristic value that face characteristic extraction module 32 extracts in described facial image data, face characteristic comparing module 34 judges whether the face characteristic value of storing in the face characteristic extraction module 32 face characteristic values of extraction and the electronic document of current unlatching mates, if while not mating, send a caution signal to peep-proof module 36; Peep-proof module 36 is definite receives this caution signal number of times continuously, if receive continuously this caution signal number of times, is less than a preset value, keeps the state of the electronic document of current unlatching; If receive continuously this caution signal number of times, be more than or equal to described preset value, send a locking signal to document execution module 35.
The described locking signal of document execution module 35 response, and the electronic document of wish deciphering is locked, in a Preset Time, do not allow this electronic document to be decrypted operation.
In other embodiments, encrypting and decrypting module 33 can be stored in the face characteristic value of a plurality of target people's faces in described electronic document to be encrypted, as long as operation user's face characteristic value meets the wherein face characteristic value of any one target people face, has the authority of opening this electronic document.
Please refer to Fig. 2, the encryption method process flow diagram for document encipher-decipher method in an embodiment of the present invention, comprises the steps:
Step S11, what people's face data acquisition module 31 response one coded signals were controlled facial image acquiring units 10 obtains facial image data.Wherein, described coded signal produces for user triggers the operation that the encipheror on electronic installation 100 is encrypted electronic document.
Step S12, the face encryption eigenwert that face characteristic extraction module 32 extracts in described facial image data.Concrete, the facial image data that 32 pairs of people's face data acquisition modules of face characteristic extraction module 31 gather are carried out recognition of face, bionic technical finesse and people's face data modeling, carry out Facial Feature Analysis, extract face encryption eigenwert.
Step S13, the face encryption eigenwert that encrypting and decrypting module 33 is extracted face characteristic extraction module 32 is stored in electronic document to be encrypted.
Please refer to Fig. 3, deciphering and locking means process flow diagram for document encipher-decipher method in an embodiment of the present invention, comprise the steps:
Step S21, what people's face data acquisition module 31 response one decrypted signal were controlled facial image acquiring units 10 obtains facial image data.Wherein, the open operation generation that described decrypted signal is opened encrypted document for user.
Step S22, the deciphering face characteristic value that face characteristic extraction module 32 extracts in described facial image data.Concrete, the facial image data that 32 pairs of people's face data acquisition modules of face characteristic extraction module 31 gather are carried out recognition of face, bionic technical finesse and people's face data modeling, carry out Facial Feature Analysis, extract face characteristic value.
Step S23, the face characteristic value of storing in the electronic document that the deciphering face characteristic value that face characteristic comparing module 34 is extracted face characteristic extraction module 32 and wish are opened compares, and judges whether the face characteristic value of storing in the electronic document of described deciphering face characteristic value and wish unlatching mates.If described deciphering face characteristic value is consistent with the face characteristic value of storing in electronic document, or error is in a preset range, is judged as coupling, enters step S24; Otherwise, be judged as and do not mate, finish.
Step S24, encrypting and decrypting module 33 sends a decrypted signal to document execution module 35.
Step S25, the described decrypted signal of document execution module 35 response is opened the electronic document of described wish deciphering, and this electronic document content is shown on display unit 40.
Step S26, what people's face data acquisition module 31 was controlled facial image acquiring units 10 obtains facial image data.
Step S27, the face characteristic value that face characteristic extraction module 32 extracts in described facial image data.
Step S28, the face characteristic value of storing in the face characteristic values that face characteristic comparing module 34 is extracted face characteristic extraction module 32 and the electronic document of current unlatching compares, and judges whether the face characteristic value of storing in the electronic document of described deciphering face characteristic value and wish unlatching mates.If described deciphering face characteristic value is consistent with the face characteristic value of storing in electronic document, or error is in a preset range, is judged as coupling, returns to step S26; Otherwise, be judged as and do not mate, enter step S29.
Step S29, face characteristic comparing module 34 sends a caution signal to peep-proof module 36.
Step S210, peep-proof module 36 determines that whether receive continuously this caution signal number of times is more than or equal to a preset value, if so, enters step S211; If not, keep the state of the electronic document of current unlatching, return to step S26.
Step S211, sends a locking signal to document execution module 35.
Step S212, the described locking signal of document execution module 35 response, stops operation user to open document, and the electronic document of wish deciphering is locked.
Adopt the document time slot scrambling of recognition of face mode to be not easy to be peeped or steal and divulge a secret by people; simultaneously the document time slot scrambling in the present invention can detect in the process that whether has disabled user to attempt opening at shielded electronic document and peep, if find that there is people, peeps and locks this electronic document.
Those skilled in the art will be appreciated that; above embodiment is only for the present invention is described; and be not used as limitation of the invention; as long as within connotation scope of the present invention, within the appropriate change that above embodiment is done and variation all drop on the scope of protection of present invention.
Claims (7)
1. a document encipher-decipher method, is characterized in that, comprises the steps:
A. respond a coded signal and obtain facial image data;
B. extract the face encryption eigenwert in described facial image data;
C. described face encryption eigenwert is encrypted electronic document to be encrypted as encryption key, and face encryption eigenwert is stored in electronic document to be encrypted;
D. respond a decrypted signal and obtain facial image data;
E. extract the deciphering face characteristic value in described facial image data;
F. the face characteristic value of storing in the electronic document of deciphering face characteristic value and wish unlatching is compared, if deciphering face characteristic value is consistent with the face characteristic value of storing in electronic document, or error is in a preset range, is judged as coupling, enters step g; Otherwise, finish;
G. send a decrypted signal, enter step h;
H. respond described decrypted signal and open the electronic document of described wish deciphering, and this electronic document content is shown.
2. document encipher-decipher method as claimed in claim 1, is characterized in that: after the step h of described document encipher-decipher method, also comprise:
I. obtain facial image data;
J. extract the face characteristic value in described facial image data;
K. the face characteristic value of storing in the electronic document of face characteristic value and wish unlatching is compared, if face characteristic value is consistent with the face characteristic value of storing in electronic document, or error is in a preset range, is judged as coupling, returns to step I; Otherwise, enter step l;
L. send a caution signal;
M. determine and receive continuously this caution signal number of times, if receive continuously this caution signal number of times, be less than a preset value, keep the state of the electronic document of current unlatching, return to step I; If receive continuously this caution signal number of times, be more than or equal to described preset value, send a locking signal;
N. stop operation user to open document, and the electronic document of wish deciphering is locked.
3. a file enciphering method, is characterized in that, comprises the steps:
A. respond a coded signal and obtain facial image data;
B. extract the face encryption eigenwert in described facial image data;
C. described face encryption eigenwert is encrypted electronic document to be encrypted as encryption key, and face encryption eigenwert is stored in electronic document to be encrypted.
4. a document decryption method, is characterized in that, comprises the steps:
A. respond a decrypted signal and obtain facial image data;
B. extract the deciphering face characteristic value in described facial image data;
C. the face characteristic value of storing in the electronic document of deciphering face characteristic value and wish unlatching is compared, if deciphering face characteristic value is consistent with the face characteristic value of storing in electronic document, or error is in a preset range, is judged as coupling, enters step g 1; Otherwise, be judged as and do not mate, enter step g 2; Otherwise, finish;
D. send a decrypted signal, enter step h;
E. respond described decrypted signal and open the electronic document of described wish deciphering, and this electronic document content is shown.
5. document decryption method as claimed in claim 4, is characterized in that, after the step e of described document decryption method, also comprises:
F. obtain facial image data;
G. extract the face characteristic value in described facial image data;
H. the face characteristic value of storing in the electronic document of face characteristic value and wish unlatching is compared, if face characteristic value is consistent with the face characteristic value of storing in electronic document, or error is in a preset range, is judged as coupling, returns to step I; Otherwise, enter step l;
I. send a caution signal;
J. determine and receive continuously this caution signal number of times, if receive continuously this caution signal number of times, be less than a preset value, keep the state of the electronic document of current unlatching, return to step f; If receive continuously this caution signal number of times, be more than or equal to described preset value, send a locking signal;
K. stop operation user to open document, and the electronic document of wish deciphering is locked.
6. an electronic installation with document encryption and decryption functions, this device comprises facial image acquiring unit, storage unit, main control unit and display unit, described memory cell contains at least one electronic document, it is characterized in that, described main control unit comprises:
People's face data acquisition module, obtains facial image data for what respond that a coded signal or decrypted signal control facial image acquiring unit;
Face characteristic extraction module, for extracting the face characteristic value of described facial image data;
Face characteristic comparing module, for the face characteristic value of when electronic document is decrypted, the electronic document of the face characteristic value of face characteristic extraction module extraction and wish unlatching being stored, compare, judge whether the face characteristic value of storing in the face characteristic value of face characteristic extraction module extraction and the electronic document of wish unlatching mates;
Encrypting and decrypting module, when electronic document is encrypted, is stored in electronic document to be encrypted for the face characteristic value that face characteristic extraction module is extracted; When electronic document is decrypted, the face characteristic value of storing with the electronic document of wish unlatching for the face characteristic value of extracting at face characteristic comparing module judgement face characteristic extraction module when mating, sends a decrypted signal to document execution module; And,
Document execution module, opens the electronic document of described wish deciphering for responding described decrypted signal.
7. electronic installation as claimed in claim 6, it is characterized in that: described main control unit also comprises a peep-proof module, at document execution module, responding described decrypted signal opens after the electronic document of described wish deciphering, what people's face data acquisition module was controlled facial image acquiring unit obtains facial image data, face characteristic extraction module extracts the face characteristic value in described facial image data, face characteristic comparing module judges whether the face characteristic value of storing in the face characteristic value of face characteristic extraction module extraction and the electronic document of current unlatching mates, if while not mating, send a caution signal to peep-proof module,
Peep-proof module is used for receiving this caution signal also to be determined and receives continuously this caution signal number of times, if receive continuously this caution signal number of times, is less than a preset value, keeps the state of the electronic document of current unlatching; If receive continuously this caution signal number of times, be more than or equal to described preset value, send a locking signal to document execution module;
Document execution module is also for responding described locking signal, and the electronic document that wish is deciphered locks.
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Application publication date: 20140212 |