CN105530258A - Electronic signature apparatus and method - Google Patents
Electronic signature apparatus and method Download PDFInfo
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- CN105530258A CN105530258A CN201510964870.5A CN201510964870A CN105530258A CN 105530258 A CN105530258 A CN 105530258A CN 201510964870 A CN201510964870 A CN 201510964870A CN 105530258 A CN105530258 A CN 105530258A
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- file destination
- signature picture
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- digital certificate
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L63/00—Network architectures or network communication protocols for network security
- H04L63/08—Network architectures or network communication protocols for network security for authentication of entities
- H04L63/0823—Network architectures or network communication protocols for network security for authentication of entities using certificates
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L9/00—Cryptographic mechanisms or cryptographic arrangements for secret or secure communications; Network security protocols
- H04L9/32—Cryptographic mechanisms or cryptographic arrangements for secret or secure communications; Network security protocols including means for verifying the identity or authority of a user of the system or for message authentication, e.g. authorization, entity authentication, data integrity or data verification, non-repudiation, key authentication or verification of credentials
- H04L9/3247—Cryptographic mechanisms or cryptographic arrangements for secret or secure communications; Network security protocols including means for verifying the identity or authority of a user of the system or for message authentication, e.g. authorization, entity authentication, data integrity or data verification, non-repudiation, key authentication or verification of credentials involving digital signatures
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- Computer Security & Cryptography (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Computer Hardware Design (AREA)
- Computing Systems (AREA)
- General Engineering & Computer Science (AREA)
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Abstract
The invention discloses an electronic signature apparatus. The apparatus comprises an acquisition module and an execution module. The acquisition module is used for acquiring signature information of a user and packaging a digital certificate containing identity information of the user in a signature picture, wherein the signature information comprises text information and/or fingerprint information. The execution module is used for loading the signature picture, in which the digital certificate is packaged, into a target file and sending the target file loaded with the signature picture to a client for checking the target file according to the digital certificate. The invention furthermore provides an electronic signature method. According to the electronic signature method and apparatus, the problem of low security of electronic signature is solved.
Description
Technical field
The present invention relates to field of information security technology, particularly relate to a kind of electronic signature device and method.
Background technology
At present, for document approvals mode common in office workflow, being that written printing of employee is waited to clear a paper, given approver and manually sign, scan this signature file, send fax or upload to mail sending, using as line being examined documentary evidence.But, along with popularizing of automatic officeization, sign electronically more and more universal, approver is no longer needed to carry out manually signing confirmation face to face, but be loaded with the file of electronic signature after being blocked, the electronic signature in file may be forged or distort, cause the fail safe of electronic signature low.
Summary of the invention
The invention provides a kind of electronic signature device and method, its main purpose is the problem that the fail safe of solution electronic signature is low.
For achieving the above object, the invention provides a kind of electronic signature device, this electronic signature device comprises:
Acquisition module, for obtaining the signing messages of user, the described signing messages got being converted into signature picture, the digital certificate of the identity information including described user being encapsulated in described signature picture, wherein, described signing messages comprises Word message and/or finger print information;
Executive Module, for the signature picture being packaged with described digital certificate is carried in file destination, and the described file destination being loaded with described signature picture is sent to client, described file destination is verified according to described digital certificate for described client.
Alternatively, described Executive Module comprises:
Loading unit, for obtaining current time information, being carried in the described current time information got and being packaged with in the signature picture of described digital certificate;
Transmitting element, for being carried in the signature picture being loaded with described current time information in file destination.
Alternatively, described acquisition module, operates for the text event detection received based on touch induction device, obtains the Word message of the described text event detection operation correspondence received, and generates signature picture according to the described Word message obtained;
Or, based on fingerprint sensor or camera, gather the finger print information of user, and generate described signature picture according to the described finger print information collected.
Alternatively, described electronic signature device also comprises:
Detection module, for when receiving the file destination including signature picture, whether the described signature picture detected in described file destination includes digital certificate;
Correction verification module, if include digital certificate for described signature picture, then judges that whether the user profile comprised in described digital certificate is consistent with the transmit leg of described file destination.
Alternatively, described Executive Module, is also sent to described client after being encrypted by the described file destination being loaded with described signature picture.
In addition, for achieving the above object, the invention provides a kind of electric endorsement method, this electric endorsement method comprises:
Obtain the signing messages of user, the described signing messages got is converted into signature picture, and be encapsulated in by the digital certificate of the identity information including described user in described signature picture, wherein, described signing messages comprises Word message and/or finger print information;
The signature picture being packaged with described digital certificate is carried in file destination, and the described file destination being loaded with described signature picture is sent to client, according to described digital certificate, described file destination is verified for described client.
Alternatively, described the step that the signature picture being packaged with described digital certificate is carried in file destination to be comprised:
Obtain current time information, the described current time information got is carried in and is packaged with in the signature picture of described digital certificate;
The signature picture being loaded with described current time information is carried in file destination.
Alternatively, the signing messages of described acquisition user, the step described signing messages got being converted into signature picture comprises:
The text event detection received based on touch induction device operates, and obtains the Word message of the described text event detection operation correspondence received, and generates signature picture according to the described Word message obtained;
Or, based on fingerprint sensor or camera, gather the finger print information of user, and generate described signature picture according to the described finger print information collected.
Alternatively, described electric endorsement method also comprises:
When receiving the file destination including signature picture, whether the described signature picture detected in described file destination includes digital certificate;
If described signature picture includes digital certificate, then judge that whether the user profile comprised in described digital certificate is consistent with the transmit leg of described file destination.
Alternatively, the described step described file destination being loaded with described signature picture being sent to client comprises:
Described client is sent to after being encrypted by the described file destination being loaded with described signature picture.
The electronic signature device that the present invention proposes and method, the signing messages of user is converted into signature picture, and the digital certificate of the identity information including user is encapsulated in this signature picture, the signature picture being packaged with digital certificate is carried in file destination and sends to client, the i.e. recipient of file destination, recipient, after receiving file destination, verifies file destination according to digital certificate, with judge this file whether from transmit leg, improve the fail safe of electronic signature.
Accompanying drawing explanation
Fig. 1 is the hardware configuration schematic diagram realizing each embodiment of the present invention optional mobile terminal;
Fig. 2 is the electrical structure block diagram of camera in Fig. 1;
Fig. 3 is the high-level schematic functional block diagram of electronic signature device first embodiment of the present invention;
Fig. 4 is the refinement high-level schematic functional block diagram of Executive Module in electronic signature device second embodiment of the present invention;
Fig. 5 is the flow chart of electric endorsement method first embodiment of the present invention;
Fig. 6 is the refinement schematic flow sheet loading signature picture step in electric endorsement method second embodiment of the present invention.
The realization of the object of the invention, functional characteristics and advantage will in conjunction with the embodiments, are described further with reference to accompanying drawing.
Embodiment
Should be appreciated that specific embodiment described herein only in order to explain the present invention, be not intended to limit the present invention.
The mobile terminal realizing each embodiment of the present invention is described referring now to accompanying drawing.In follow-up description, use the suffix of such as " module ", " parts " or " unit " for representing element only in order to be conducive to explanation of the present invention, itself is specific meaning not.Therefore, " module " and " parts " can mixedly use.
Mobile terminal can be implemented in a variety of manners.Such as, the terminal described in the present invention can comprise the fixed terminal of the mobile terminal of such as mobile phone, notebook computer, PDA (personal digital assistant), PAD (panel computer) etc. and such as desktop computer etc.Below, suppose that terminal is mobile terminal.But it will be appreciated by those skilled in the art that except the element except being used in particular for mobile object, structure according to the embodiment of the present invention also can be applied to the terminal of fixed type.
Fig. 1 is the hardware configuration schematic diagram realizing each embodiment of the present invention optional mobile terminal.
Mobile terminal 100 can comprise wireless communication unit 110, A/V (audio/video) input unit 120, user input unit 130, fingerprint collecting unit 140, output unit 150, memory 160, interface unit 170, controller 180, power subsystem 190 etc.Fig. 1 shows the mobile terminal with various assembly, it should be understood that, does not require to implement all assemblies illustrated.Can alternatively implement more or less assembly.Will be discussed in more detail below the element of mobile terminal.
Wireless communication unit 110 generally includes one or more assembly, and it allows the radio communication between mobile terminal 100 and radio communication device or network.Such as, wireless communication unit can comprise at least one in broadcast reception module 111, mobile communication module 112, wireless Internet module 113 and positional information module 115.
Broadcast reception module 111 via broadcast channel from external broadcasting management server receiving broadcast signal and/or broadcast related information.Broadcast channel can comprise satellite channel and/or terrestrial channel.Broadcast management server can be generate and send the server of broadcast singal and/or broadcast related information or the broadcast singal generated before receiving and/or broadcast related information and send it to the server of terminal.Broadcast singal can comprise TV broadcast singal, radio signals, data broadcasting signal etc.And broadcast singal may further include the broadcast singal combined with TV or radio signals.Broadcast related information also can provide via mobile communications network, and in this case, broadcast related information can be received by mobile communication module 112.Broadcast singal can exist in a variety of manners, such as, it can exist with the form of the electronic service guidebooks (ESG) of the electronic program guides of DMB (DMB) (EPG), digital video broadcast-handheld (DVB-H) etc.Broadcast reception module 111 can by using the broadcast of various types of broadcaster Received signal strength.Especially, broadcast reception module 111 can by using such as multimedia broadcasting-ground (DMB-T), DMB-satellite (DMB-S), digital video broadcasting-hand-held (DVB-H), forward link media (MediaFLO
) the digital broadcast apparatus receiving digital broadcast of data broadcast device, received terrestrial digital broadcasting integrated service (ISDB-T) etc.Broadcast reception module 111 can be constructed to be applicable to providing the various broadcaster of broadcast singal and above-mentioned digital broadcast apparatus.The broadcast singal received via broadcast reception module 111 and/or broadcast related information can be stored in memory 160 (or storage medium of other type).
Radio signal is sent at least one in base station (such as, access point, Node B etc.), exterior terminal and server and/or receives radio signals from it by mobile communication module 112.Various types of data that such radio signal can comprise voice call signal, video calling signal or send according to text and/or Multimedia Message and/or receive.
Wireless Internet module 113 supports the Wi-Fi (Wireless Internet Access) of mobile terminal.This module can be inner or be externally couple to terminal.Wi-Fi (Wireless Internet Access) technology involved by this module can comprise WLAN (WLAN) (Wi-Fi), Wibro (WiMAX), Wimax (worldwide interoperability for microwave access), HSDPA (high-speed downlink packet access) etc.
Positional information module 115 is the modules of positional information for checking or obtain mobile terminal.The typical case of positional information module is GPS (global pick device).According to current technology, GPS module 115 calculates from the range information of three or more satellite and correct time information and for the Information application triangulation calculated, thus calculates three-dimensional current location information according to longitude, latitude and pin-point accuracy.Current, the method for calculating location and temporal information uses three satellites and by the error of the position that uses an other satellite correction calculation to go out and temporal information.In addition, GPS module 115 can carry out computational speed information by Continuous plus current location information in real time.
A/V input unit 120 is for audio reception or vision signal.A/V input unit 120 can comprise camera 121 and microphone 122, and the view data of camera 121 to the static images obtained by image capture apparatus in Video Capture pattern or image capture mode or video processes.Picture frame after process may be displayed on display unit 151.Picture frame after camera 121 processes can be stored in memory 160 (or other storage medium) or via wireless communication unit 110 and send, and can provide two or more cameras 121 according to the structure of mobile terminal.Such acoustic processing can via microphones sound (voice data) in telephone calling model, logging mode, speech recognition mode etc. operational mode, and can be voice data by microphone 122.Audio frequency (voice) data after process can be converted to the formatted output that can be sent to mobile communication base station via mobile communication module 112 when telephone calling model.Microphone 122 can be implemented various types of noise and eliminate (or suppress) algorithm and receiving and sending to eliminate (or suppression) noise or interference that produce in the process of audio signal.
User input unit 130 can generate key input data to control the various operations of mobile terminal according to the order of user's input.User input unit 130 allows user to input various types of information, and keyboard, the young sheet of pot, touch pad (such as, detecting the touch-sensitive assembly of the change of the resistance, pressure, electric capacity etc. that cause owing to being touched), roller, rocking bar etc. can be comprised.Especially, when touch pad is superimposed upon on display unit 151 as a layer, touch-screen can be formed.Fingerprint collecting unit 140 can gather the fingerprint of user's input, and such as, user can based on touch-screen or touch induction device input fingerprint, and fingerprint collecting unit 140, when finger print information being detected, carries out the collection of finger print information.
Interface unit 170 is used as at least one external device (ED) and is connected the interface that can pass through with mobile terminal 100.Such as, external device (ED) can comprise wired or wireless head-band earphone port, external power source (or battery charger) port, wired or wireless FPDP, memory card port, for connecting the port, audio frequency I/O (I/O) port, video i/o port, ear port etc. of the device with identification module.Identification module can be that storage uses the various information of mobile terminal 100 for authentication of users and can comprise subscriber identification module (UIM), client identification module (SIM), Universal Subscriber identification module (USIM) etc.In addition, the device (hereinafter referred to " recognition device ") with identification module can take the form of smart card, and therefore, recognition device can be connected with mobile terminal 100 via port or other jockey.Interface unit 170 may be used for receive from external device (ED) input (such as, data message, electric power etc.) and the input received be transferred to the one or more element in mobile terminal 100 or may be used for transmitting data between mobile terminal and external device (ED).
In addition, when mobile terminal 100 is connected with external base, interface unit 170 can be used as to allow by it electric power to be provided to the path of mobile terminal 100 from base or can be used as the path that allows to be transferred to mobile terminal by it from the various command signals of base input.The various command signal inputted from base or electric power can be used as and identify whether mobile terminal is arranged on the signal base exactly.Output unit 150 is constructed to provide output signal (such as, audio signal, vision signal, alarm signal, vibration signal etc.) with vision, audio frequency and/or tactile manner.Output unit 150 can comprise display unit 151, dio Output Modules 152 etc.
Display unit 151 may be displayed on the information of process in mobile terminal 100.Such as, when mobile terminal 100 is in telephone calling model, display unit 151 can show with call or other communicate (such as, text messaging, multimedia file are downloaded etc.) relevant user interface (UI) or graphic user interface (GUI), such as, the unblock character that user is arranged can be shown, carry out unlocking operation for user based on unblock character.When mobile terminal 100 is in video calling pattern or image capture mode, display unit 151 can the image of display capture and/or the image of reception, UI or GUI that video or image and correlation function are shown etc.
Meanwhile, when display unit 151 and touch pad as a layer superposed on one another to form touch-screen time, display unit 151 can be used as input unit and output device.Display unit 151 can comprise at least one in liquid crystal display (LCD), thin-film transistor LCD (TFT-LCD), Organic Light Emitting Diode (OLED) display, flexible display, three-dimensional (3D) display etc.Some in these displays can be constructed to transparence and watch from outside to allow user, and this can be called transparent display, and typical transparent display can be such as TOLED (transparent organic light emitting diode) display etc.According to the specific execution mode wanted, mobile terminal 100 can comprise two or more display units (or other display unit), such as, mobile terminal can comprise outernal display unit (not shown) and inner display unit (not shown).Touch-screen can be used for detecting touch input pressure and touch input position and touch and inputs area.
When dio Output Modules 152 can be under the isotypes such as call signal receiving mode, call mode, logging mode, speech recognition mode, broadcast reception mode at mobile terminal, voice data convert audio signals that is that wireless communication unit 110 is received or that store in memory 160 and exporting as sound.And dio Output Modules 152 can provide the audio frequency relevant to the specific function that mobile terminal 100 performs to export (such as, call signal receives sound, message sink sound etc.).Dio Output Modules 152 can comprise pick-up, buzzer etc.
Output unit 150 can provide the output of the generation of notification event via display unit 151 or dio Output Modules 152.
Memory 160 software program that can store process and the control operation performed by controller 180 etc., or temporarily can store oneself through exporting the data (such as, telephone directory, message, still image, video etc.) that maybe will export.And, memory 160 can store about when touch be applied to touch-screen time the vibration of various modes that exports and the data of audio signal.
Memory 160 can comprise the storage medium of at least one type, described storage medium comprises flash memory, hard disk, multimedia card, card-type memory (such as, SD or DX memory etc.), random access storage device (RAM), static random-access memory (SRAM), read-only memory (ROM), Electrically Erasable Read Only Memory (EEPROM), programmable read only memory (PROM), magnetic storage, disk, CD etc.And mobile terminal 100 can be connected the memory function of execute store 160 network storage device with by network cooperates.
Controller 180 controls the overall operation of mobile terminal usually.Such as, controller 180 performs the control relevant to voice call, data communication, video calling etc. and process.In addition, controller 180 can comprise the multi-media module 1810 for reproducing (or playback) multi-medium data, and multi-media module 1810 can be configured in controller 180, or can be configured to be separated with controller 180.Controller 180 can pattern recognition process, is identified as character or image so that input is drawn in the handwriting input performed on the touchscreen or picture.
Power subsystem 190 receives external power or internal power and provides each element of operation and the suitable electric power needed for assembly under the control of controller 180.
Various execution mode described herein can to use such as computer software, the computer-readable medium of hardware or its any combination implements.For hardware implementation, execution mode described herein can by using application-specific IC (ASIC), digital signal processor (DSP), digital signal processing device (DSPD), programmable logic device (PLD), field programmable gate array (FPGA), processor, controller, microcontroller, microprocessor, being designed at least one performed in the electronic unit of function described herein and implementing, in some cases, such execution mode can be implemented in controller 180.For implement software, the execution mode of such as process or function can be implemented with allowing the independent software module performing at least one function or operation.Software code value can be implemented by the software application (or program) write with any suitable programming language, and software code value can be stored in memory 160 and to be performed by controller 180.
So far, oneself is through the mobile terminal according to its functional description.Below, the electrical structure of the camera in mobile terminal is described.
With reference to the electrical structure block diagram that Fig. 2, Fig. 2 are camera in Fig. 1.
Phtographic lens 1211 is made up of the multiple optical lens for the formation of shot object image, is single-focus lens or zoom lens.Phtographic lens 1211 can move in the direction of the optical axis under the control of lens driver 1221, lens driver 1221 is according to the control signal from lens driving control circuit 1222, control the focal position of phtographic lens 1211, when zoom lens, also can control focal length.Lens driving control circuit 1222 carries out the drived control of lens driver 1221 according to the control command from microcomputer 1217.
Imaging apparatus 1212 is configured with near the position of the shot object image formed on the optical axis of phtographic lens 1211, by phtographic lens 1211.Imaging apparatus 1212 is for making a video recording to shot object image and obtaining image data.On imaging apparatus 1212 two dimension and be arranged in a matrix the photodiode forming each pixel.Each photodiode produces the opto-electronic conversion electric current corresponding with light income, and this opto-electronic conversion electric current carries out charge accumulation by the capacitor be connected with each photodiode.The front surface of each pixel is configured with the RGB colour filter of Bayer arrangement.
Imaging apparatus 1212 is connected with imaging circuit 1213, this imaging circuit 1213 carries out charge accumulation and controls and picture signal reading control in imaging apparatus 1212, to the picture signal (analog picture signal) of this reading reduce reset noise after carry out waveform shaping, and then carry out gain raising etc. to become suitable signal level.Imaging circuit 1213 is connected with A/D converter 1214, and this A/D converter 1214 pairs of analog picture signals carry out analog-to-digital conversion, to bus 1227 output digital image signal (hereinafter referred to as view data).
Bus 1227 is the transfer paths of the various data that the inside for being transmitted in camera reads or generates.Above-mentioned A/D converter 1214 is connected in bus 1227, be connected to image processor 1215, jpeg processor 1216, microcomputer 1217, SDRAM (SynchronousDynamicrandomaccessmemory in addition, SDRAM) 1218, memory interface (hereinafter referred to as memory I/F) 1219, LCD (LiquidCrystalDisplay, liquid crystal display) driver 1220.
Image processor 1215 carries out OB to the view data of the output based on imaging apparatus 1212 and subtracts each other process, blank level adjustment, color matrix computing, gamma conversion, color difference signal process, noise removal process, changes the various image procossing such as process, edge treated simultaneously.Jpeg processor 1216 by Imagery Data Recording in recording medium 1225 time, according to JPEG compress mode compression from SDRAM1218 read view data.In addition, jpeg processor 1216 carries out the decompression of jpeg image data in order to carry out image reproducing display.When decompressing, read the file that is recorded in recording medium 1225, implement decompression in jpeg processor 1216 after, the view data of decompression to be temporarily stored in SDRAM1218 and to show on LCD1226.H.264 in addition, in the present embodiment, what adopt as image compression decompression mode is JPEG mode, but compressed and decompressed mode is not limited thereto, and certainly can adopt MPEG, TIFF, other the compressed and decompressed mode such as.
Microcomputer 1217 plays the function of the control part as this camera entirety, the unified various process sequences controlling camera.Microcomputer 1217 is connected to operating unit 1223 and flash memory 1224.
Operating unit 1223 includes but not limited to physical button or virtual key, this entity or virtual key can be the operational controls such as various load button and various enter keies such as power knob, key of taking pictures, edit key, dynamic image button, reproduction button, menu button, cross key, OK button, delete button, large buttons, detect the mode of operation of these operational controls.
Testing result is exported to microcomputer 1217.In addition, be provided with touch panel at the front surface of the LCD1226 as display, detect the touch location of user, this touch location is exported to microcomputer 1217.Microcomputer 1217, according to the testing result of the operating position from operating unit 1223, performs the various process sequences corresponding with the operation of user.
Flash memory 1224 stores the program of the various process sequences for performing microcomputer 1217.Microcomputer 1217 carries out the control of camera entirety according to this program.In addition, flash memory 1224 stores the various adjusted values of camera, and microcomputer 1217 reads adjusted value, carries out the control of camera according to this adjusted value.
SDRAM1218 is can the electricity volatile memory of rewriting for what carry out view data etc. temporarily storing.This SDRAM1218 temporarily stores the view data that exports from A/D converter 1214 and image processor 1215, jpeg processor 1216 etc., to have carried out the view data after processing.
Memory interface 1219 is connected with recording medium 1225, carries out the control by view data and the first-class data writing recording medium 1225 of file be attached in view data and reading from recording medium 1225.Recording medium 1225 be such as can on camera main-body the recording medium such as memory card of disassembled and assembled freely, but being not limited thereto, also can be the hard disk etc. be built in camera main-body.
Lcd driver 1210 is connected with LCD1226, view data after being processed by image processor 1215 is stored in SDRAM1218, when needing display, read the view data that SDRAM1218 stores also to show on LCD1226, or the compressed view data of jpeg processor 1216 is stored in SDRAM1218, when needs show, jpeg processor 1216 reads the compressed view data of SDRAM1218, then decompresses, and the view data after decompressing is shown by LCD1226.
Image display is carried out at the back side that LCD1226 is configured in camera main-body.This LCD1226LCD), but be not limited thereto, also can adopt the various display floaters (LCD1226) such as organic EL, but be not limited thereto, also can adopt the various display floaters such as organic EL.
Based on the electrical structure schematic diagram of above-mentioned mobile terminal hardware configuration and camera, each embodiment of apparatus of the present invention is proposed.
The present invention proposes a kind of electronic signature device.
With reference to shown in Fig. 3, it is the high-level schematic functional block diagram of electronic signature device first embodiment of the present invention.
In this embodiment, this electronic signature device comprises:
Acquisition module 10, for obtaining the signing messages of user, the described signing messages got being converted into signature picture, the digital certificate of the identity information including described user being encapsulated in described signature picture, wherein, described signing messages comprises Word message and/or finger print information;
The signing messages of the user described in the present embodiment can comprise the Word message, finger print information etc. of user can the information of attestation-signatures person identity, described Word message is the hand-written signature of user, can be user carries out writing generation based on the touch-screen of mobile terminal, also can be the handwritten signature using other electric signing tools to gather, or the signature writing that user writes on paper is taken pictures the handwritten signature collected.Acquisition module 10 obtains the hand-written signature of user or finger print information, can be in advance by path that the handwritten signature collected or fingerprint storage pre-set at one, when needs sign electronically, directly go out to extract the Word message and/or finger print information that need from described path, be translated into signature picture, or, consider that the font of user can change, also can when needs send file destination, acquisition module 10 Real-time Collection Word message and/or finger print information, due to mobile phone, panel computer, the mobile terminals such as notebook become user handle official business use capital equipment, the touch display screen of above-mentioned terminal can be utilized, the signing messages of fingerprint sensor and the first-class acquisition user that makes a video recording.
About this signature picture, general conventional picture format can be adopted, in this embodiment, in order to ensure the definition of signature picture, adopt the form of bitmap (bitmap file) form, the picture of this form is uncompressed formula, image display effect is good, even if to zoom in or out process to image, also its display effect can not be affected, then digital certificate is encapsulated in described signature picture, general bitmap images is made up of four parts, be respectively file header, message bit pattern head, the array of bytes of color table and definition bitmap, in the present embodiment, after the data of data certificate can being added on array of bytes.
Executive Module 20, for the signature picture being packaged with described digital certificate is carried in file destination, and the described file destination being loaded with described signature picture is sent to client, described file destination is verified according to described digital certificate for described client.
Be understandable that, described file destination can have various ways, such as mail, PDF (PortableDocumentFormat, portable document format) file and other various forms of office documents etc., this city embodiment is not restricted for the form of file destination, is not limited to above-mentioned several form.About the load mode of signature picture, can have numerous embodiments, below enumerate two kinds wherein, mode one, with the form of watermark, signature picture can be carried in the specified location of file destination, this assigned address can be arranged as required by user; Mode two, is directly added in file destination in the mode of insert pictures by signature picture, such as, if file destination is an envelope mail, then signature picture can be added on the last of Mail Contents.
After digital certificate is encapsulated in signature picture by Executive Module 20, to need described signature picture to be loaded in file destination and to be sent to client, client is after receiving this file destination, can verify this file destination according to the digital certificate in this file, whether consistent with transmit leg to judge the user profile in digital certificate, if consistent, then come from transmit leg when this file destination is described, this file is not revised by third party in the midway of transmission.
Recipient is after receiving file destination, get the signature picture loaded in file destination, in one embodiment, if be loaded with digital certificate in this signature picture, then transmit leg adds identification information on signature picture, as the client of recipient when getting this signature picture, directly can be loaded with digital certificate according in this signature picture of identification information judgment on signature picture, and then decapsulation is carried out to the data of this signature picture to obtain digital certificate, file destination be verified; In another embodiment, transmit leg adds field and is packaged with digital certificate to represent in this image data in the attribute information of signature picture, as the client of recipient after getting the signature picture loaded in file destination, check that the attribute information of this signature picture is to judge whether have digital certificate in this signature picture.Or in other embodiments, the terminal of recipient resolves to have judged whether digital certificate to signature picture, if having, then directly push information and based on described digital certificate, file destination is verified with reminding user.
Digital certificate mainly comprises following authentication field: the digital signature of certificate authority, the identity information of secret key and holder is disclosed, digital certificate is generally by the third party CA (CertificateAuthority that authority is just, certificate authority) issue, there is certain authority, a kind of authoritative electronic document of one carrying out authentication on network is provided, it has carried out certification through third party's certificate authority to the identity of holder and has carried out digital signature, the object of adding digital certificate mainly allows recipient confirm the identity of file destination transmit leg, other people distorting is suffered after being tackled in the process of transmission to prevent file destination.
And, transmit leg can adopt the encryption system of symmetric cryptography or asymmetric encryption to be encrypted the file destination sent based on above-mentioned digital certificate, such as, transmit leg can adopt digest algorithm to obtain the summary info of file to file destination, and adopt private key to be encrypted described summary info, when sending file, ciphertext and plaintext are sent to recipient simultaneously, because the digest algorithm generating above-mentioned summary info is one-way function, forward can only be carried out and obtain informative abstract, and prime information cannot be obtained according to informative abstract, therefore, recipient gets openly secret key from above-mentioned digital certificate, the disclosure secret key pair ciphertext can be used to be decrypted and to adopt digest algorithm according to expressly obtaining a summary info, by this summary info obtained with the summary info that decrypt ciphertext obtains is contrasted, if content is identical, then illustrate that this file destination is not distorted through third-party in the process of transmission, if different, then illustrate that this file destination suffers third-party distorting in the process of transmission, then verify failure.
For recipient, after the file destination receiving transmit leg transmission, digital certificate is used to verify file destination, if verification succeeds, then supporting paper is sent out, further, if verify unsuccessfully by transmit leg, then illustrate that this file destination may have passed through third-party distorting, now, send feedback information to transmit leg, to point out transmit leg file verification failure, transmit leg after receiving described feedback information, can resend described file destination.
Further, in order to ensure that the user that the transmit leg of file destination and signing messages are corresponding is consistent, namely when sending file destination, the signature that carries out of same user and transmission, transmit leg needs to make signing messages consistent with identity information, or signing messages is associated with identity information, such as, if signing messages is handwritten signature, then the content of signing messages is consistent with the title on identity information, be the signing messages of signing as the unscripted such as fingerprint as what use, then the identity information of signing messages and user is bound by acquisition module 10, can this binding information be left in server, as recipient client get signature picture and digital certificate after, identity information corresponding to signature picture is obtained from server, identity information in itself and digital certificate is contrasted, judge whether consistent, if consistent, then verification succeeds, if inconsistent, then verify failure.
The electronic signature device that the present embodiment proposes, the signing messages of user is converted into signature picture, and the digital certificate of the identity information including user is encapsulated in this signature picture, the signature picture being packaged with digital certificate is carried in file destination and sends to client, the i.e. recipient of file destination, recipient, after receiving file destination, verifies file destination according to digital certificate, with judge this file whether from transmit leg, improve the fail safe of electronic signature.
With reference to shown in Fig. 4, the first embodiment based on electronic signature device of the present invention proposes the second embodiment of electronic signature device of the present invention.In the present embodiment, Executive Module 20 comprises:
Loading unit 21, for obtaining current time information, being carried in the described current time information got and being packaged with in the signature picture of described digital certificate;
Transmitting element 22, for being carried in the signature picture being loaded with described current time information in file destination.
In order to guarantee the fail safe signed electronically further, loading unit 21 will be loaded into the signature picture time be loaded in file destination in signature picture, in other embodiments, , further for signature picture arranges ageing, namely effective duration is set, such as, exceed the time receiving file destination after the temporal information of signing in picture adds effective duration, then think that this signature picture lost efficacy, transmit leg is needed to resend the signature picture in effective duration, or transmit leg can be set to signature picture and only use in a document approvals, shorter effective duration then can be set.About the accuracy of temporal information, can be as accurate as hour, point or second etc., arranged as required by user.
Further, in the present embodiment, the acquisition mode of two kinds of Word messages and finger print information is provided, for the collection of Word message, the i.e. collection of user's handwritten signature, because current mobile terminal generally all has touch display screen, user can carry out handwriting input based on touch display screen, in one embodiment, acquisition module 10 may be used for the text event detection received based on touch induction device and operates, obtain the Word message of the described text event detection operation correspondence received, and generate signature picture according to the described Word message obtained.In another embodiment, acquisition module 10, can also be used for based on fingerprint sensor or camera, gathers the finger print information of user, and generates described signature picture according to the described finger print information collected.
Further, before transmission file destination, file destination is encrypted, general cipher mode can be adopted herein to be encrypted, such as, password to be arranged to mail, the password only having input transmit leg to arrange, just can open this mail, the further fail safe strengthening file transfer.
The present invention also provides a kind of electric endorsement method.
With reference to shown in Fig. 5, it is the flow chart of electric endorsement method first embodiment of the present invention.
In a first embodiment, this electric endorsement method comprises:
Step S10, obtain the signing messages of user, the described signing messages got is converted into signature picture, the digital certificate of the identity information including described user is encapsulated in described signature picture, wherein, described signing messages comprises Word message and/or finger print information;
The signing messages of the user described in the present embodiment can comprise the Word message, finger print information etc. of user can the information of attestation-signatures person identity, described Word message is the hand-written signature of user, can be user carries out writing generation based on the touch-screen of mobile terminal, also can be the handwritten signature using other electric signing tools to gather, or the signature writing that user writes on paper is taken pictures the handwritten signature collected.Obtain the hand-written signature of user or finger print information, can be in advance by path that the handwritten signature collected or fingerprint storage pre-set at one, when needs sign electronically, directly go out to extract the Word message and/or finger print information that need from described path, be translated into signature picture, or, consider that the font of user can change, also can when needs send file destination, Real-time Collection Word message and/or finger print information, due to mobile phone, panel computer, the mobile terminals such as notebook become user handle official business use capital equipment, the touch display screen of above-mentioned terminal can be utilized, the signing messages of fingerprint sensor and the first-class acquisition user that makes a video recording.
About this signature picture, general conventional picture format can be adopted, in this embodiment, in order to ensure the definition of signature picture, adopt the form of bitmap (bitmap file) form, the picture of this form is uncompressed formula, image display effect is good, even if to zoom in or out process to image, also its display effect can not be affected, then digital certificate is encapsulated in described signature picture, general bitmap images is made up of four parts, be respectively file header, message bit pattern head, the array of bytes of color table and definition bitmap, in the present embodiment, after the data of data certificate can being added on array of bytes.
Step S20, is carried in the signature picture being packaged with described digital certificate in file destination, and the described file destination being loaded with described signature picture is sent to client, verifies according to described digital certificate for described client to described file destination.
Be understandable that, described file destination can have various ways, such as mail, PDF (PortableDocumentFormat, portable document format) file and other various forms of office documents etc., the method of the present embodiment is not restricted for the form of file destination, is not limited to above-mentioned several form.About the load mode of signature picture, can have numerous embodiments, below enumerate two kinds wherein, mode one, with the form of watermark, signature picture can be carried in the specified location of file destination, this assigned address can be arranged as required by user; Mode two, is directly added in file destination in the mode of insert pictures by signature picture, such as, if file destination is an envelope mail, then signature picture can be added on the last of Mail Contents.
After digital certificate being encapsulated in signature picture, to need described signature picture to be loaded in file destination and to be sent to client, client is after receiving this file destination, can verify this file destination according to the digital certificate in this file, whether consistent with transmit leg to judge the user profile in digital certificate, if consistent, then come from transmit leg when this file destination is described, this file is not revised by third party in the midway of transmission.
Recipient is after receiving file destination, get the signature picture loaded in file destination, in one embodiment, if be loaded with digital certificate in this signature picture, then transmit leg adds identification information on signature picture, as the client of recipient when getting this signature picture, directly can be loaded with digital certificate according in this signature picture of identification information judgment on signature picture, and then decapsulation is carried out to the data of this signature picture to obtain digital certificate, file destination be verified; In another embodiment, transmit leg adds field and is packaged with digital certificate to represent in this image data in the attribute information of signature picture, as after the signature picture that the client of recipient loads in the file destination got, check that the attribute information of this signature picture is to judge whether have digital certificate in this signature picture.Or in other embodiments, the terminal of recipient resolves to have judged whether digital certificate to signature picture, if having, then directly push information and based on described digital certificate, file destination is verified with reminding user.
Digital certificate mainly comprises following authentication field: the digital signature of certificate authority, the identity information of secret key and holder is disclosed, digital certificate is generally by the third party CA (CertificateAuthority that authority is just, certificate authority) issue, there is certain authority, a kind of authoritative electronic document of one carrying out authentication on network is provided, it has carried out certification through third party's certificate authority to the identity of holder and has carried out digital signature, the object of adding digital certificate mainly allows recipient confirm the identity of file destination transmit leg, other people distorting is suffered after being tackled in the process of transmission to prevent file destination.
And, transmit leg can adopt the encryption system of symmetric cryptography or asymmetric encryption to be encrypted the file destination sent based on above-mentioned digital certificate, such as, transmit leg can adopt digest algorithm to obtain the summary info of file to file destination, and adopt private key to be encrypted described summary info, when sending file, ciphertext and plaintext are sent to recipient simultaneously, because the digest algorithm generating above-mentioned summary info is one-way function, forward can only be carried out and obtain informative abstract, and prime information cannot be obtained according to informative abstract, therefore, recipient gets openly secret key from above-mentioned digital certificate, the disclosure secret key pair ciphertext can be used to be decrypted, and adopt digest algorithm according to expressly obtaining a summary info, by this summary info obtained with the summary info that decrypt ciphertext obtains is contrasted, if content is identical, then illustrate that this file destination is not distorted through third-party in the process of transmission, if different, then illustrate that this file destination suffers third-party distorting in the process of transmission, then verify failure.
For recipient, after the file destination receiving transmit leg transmission, digital certificate is used to verify file destination, if verification succeeds, then supporting paper is sent out, further, if verify unsuccessfully by transmit leg, then illustrate that this file destination may have passed through third-party distorting, now, send feedback information to transmit leg, to point out transmit leg file verification failure, transmit leg after receiving described feedback information, can resend described file destination.
Further, on the basis of said process, in order to ensure that the user that the transmit leg of file destination and signing messages are corresponding is consistent, namely when sending file destination, the signature that carries out of same user and transmission, transmit leg needs to make signing messages consistent with identity information, or signing messages is associated with identity information, such as, if signing messages is handwritten signature, then the content of signing messages is consistent with the title on identity information, be the signing messages of signing as the unscripted such as fingerprint as what use, then the identity information of signing messages and user is bound, can this binding information be left in server, recipient is after getting signature picture and digital certificate, identity information corresponding to signature picture is obtained from server, identity information in itself and digital certificate is contrasted, judge whether consistent, if consistent, then verification succeeds, if inconsistent, then verify failure.
The electric endorsement method that the present embodiment proposes, the signing messages of user is converted into signature picture, and the digital certificate of the identity information including user is encapsulated in this signature picture, the signature picture being packaged with digital certificate is carried in file destination and sends to client, the i.e. recipient of file destination, recipient, after receiving file destination, verifies file destination according to digital certificate, with judge this file whether from transmit leg, improve the fail safe of electronic signature.
With reference to shown in Fig. 6, the first embodiment based on electric endorsement method of the present invention proposes the second embodiment of electric endorsement method of the present invention.In the present embodiment, step S20 comprises:
Step S21, obtains current time information, is carried in by the described current time information got and is packaged with in the signature picture of described digital certificate;
Step S22, is carried in the signature picture being loaded with described current time information in file destination.
In order to guarantee the fail safe signed electronically further, the signature picture time be loaded in file destination will be loaded in signature picture, in other embodiments, further for signature picture arranges ageing, namely effective duration is set, such as, exceed the time receiving file destination after the temporal information of signing in picture adds effective duration, then think that this signature picture lost efficacy, transmit leg is needed to resend the signature picture in effective duration, or transmit leg can be set to signature picture and only use in a document approvals, shorter effective duration then can be set.About the accuracy of temporal information, can be as accurate as hour, point or second etc., arranged as required by user.
Further, in the present embodiment, the acquisition method of two kinds of Word messages and finger print information is provided, for the collection of Word message, i.e. the collection of user's handwritten signature, because current mobile terminal generally all has touch display screen, user can carry out handwriting input based on touch display screen, the text event detection that terminal receives based on touch induction device operates, and obtains the Word message of the described text event detection operation correspondence received, and generates signature picture according to the described Word message obtained.For the collection of finger print information, the terminal being provided with camera or fingerprint sensor can be used, based on fingerprint sensor or camera, gather the finger print information of user, and generate described signature picture according to the described finger print information collected.
Further, before transmission file destination, file destination is encrypted, general cipher mode can be adopted herein to be encrypted, such as, password to be arranged to mail, the password only having input transmit leg to arrange, just can open this mail, the further fail safe strengthening file transfer.
These are only the preferred embodiments of the present invention; not thereby the scope of the claims of the present invention is limited; every utilize specification of the present invention and accompanying drawing content to do equivalent structure or equivalent flow process conversion; or be directly or indirectly used in other relevant technical fields, be all in like manner included in scope of patent protection of the present invention.
Claims (10)
1. an electronic signature device, is characterized in that, described electronic signature device comprises:
Acquisition module, for obtaining the signing messages of user, the described signing messages got being converted into signature picture, the digital certificate of the identity information including described user being encapsulated in described signature picture, wherein, described signing messages comprises Word message and/or finger print information;
Executive Module, for the signature picture being packaged with described digital certificate is carried in file destination, and the described file destination being loaded with described signature picture is sent to client, described file destination is verified according to described digital certificate for described client.
2. electronic signature device according to claim 1, is characterized in that, described Executive Module comprises:
Loading unit, for obtaining current time information, being carried in the described current time information got and being packaged with in the signature picture of described digital certificate;
Transmitting element, for being carried in the signature picture being loaded with described current time information in file destination.
3. electronic signature device according to claim 1, it is characterized in that, described acquisition module, operate for the text event detection received based on touch induction device, obtain the Word message of the described text event detection operation correspondence received, and generate signature picture according to the described Word message obtained;
Or, based on fingerprint sensor or camera, gather the finger print information of user, and generate described signature picture according to the described finger print information collected.
4. electronic signature device according to claim 1, is characterized in that, described electronic signature device also comprises:
Detection module, for when receiving the file destination including signature picture, whether the described signature picture detected in described file destination includes digital certificate;
Correction verification module, if include digital certificate for described signature picture, then judges that whether the user profile comprised in described digital certificate is consistent with the transmit leg of described file destination.
5. the electronic signature device according to any one of claim 1-4, is characterized in that, described Executive Module, also after being encrypted by the described file destination being loaded with described signature picture, is sent to described client.
6. an electric endorsement method, is characterized in that, described electric endorsement method comprises:
Obtain the signing messages of user, the described signing messages got is converted into signature picture, and be encapsulated in by the digital certificate of the identity information including described user in described signature picture, wherein, described signing messages comprises Word message and/or finger print information;
The signature picture being packaged with described digital certificate is carried in file destination, and the described file destination being loaded with described signature picture is sent to client, according to described digital certificate, described file destination is verified for described client.
7. electric endorsement method according to claim 6, is characterized in that, describedly the step that the signature picture being packaged with described digital certificate is carried in file destination is comprised:
Obtain current time information, the described current time information got is carried in and is packaged with in the signature picture of described digital certificate;
The signature picture being loaded with described current time information is carried in file destination.
8. electric endorsement method according to claim 6, is characterized in that, the signing messages of described acquisition user, and the step described signing messages got being converted into signature picture comprises:
The text event detection received based on touch induction device operates, and obtains the Word message of the described text event detection operation correspondence received, and generates signature picture according to the described Word message obtained;
Or, based on fingerprint sensor or camera, gather the finger print information of user, and generate described signature picture according to the described finger print information collected.
9. electric endorsement method according to claim 6, is characterized in that, described electric endorsement method also comprises:
When receiving the file destination including signature picture, whether the described signature picture detected in described file destination includes digital certificate;
If described signature picture includes digital certificate, then judge that whether the user profile comprised in described digital certificate is consistent with the transmit leg of described file destination.
10. the electric endorsement method according to any one of claim 6-9, is characterized in that, the described step described file destination being loaded with described signature picture being sent to client comprises:
Described client is sent to after being encrypted by the described file destination being loaded with described signature picture.
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| CN201510964870.5A CN105530258A (en) | 2015-12-18 | 2015-12-18 | Electronic signature apparatus and method |
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| CN201510964870.5A CN105530258A (en) | 2015-12-18 | 2015-12-18 | Electronic signature apparatus and method |
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| CN112434319A (en) * | 2020-11-27 | 2021-03-02 | 无锡卡尔曼导航技术有限公司 | Data encryption method and device for electronic file |
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Application publication date: 20160427 |