CN104915606A - File encryption and decryption methods and devices - Google Patents
File encryption and decryption methods and devices Download PDFInfo
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- CN104915606A CN104915606A CN201510288058.5A CN201510288058A CN104915606A CN 104915606 A CN104915606 A CN 104915606A CN 201510288058 A CN201510288058 A CN 201510288058A CN 104915606 A CN104915606 A CN 104915606A
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F21/00—Security arrangements for protecting computers, components thereof, programs or data against unauthorised activity
- G06F21/60—Protecting data
- G06F21/602—Providing cryptographic facilities or services
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- 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
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Abstract
The invention discloses file encryption and decryption methods and devices. The file encryption method comprises the following steps of acquiring an original file to be encrypted; acquiring a pressure encryption parameter according to the pressing operation of a user over a mobile terminal; encrypting the original file to generate an encrypted file according to the pressure encryption parameter and a preset encryption algorithm. According to the methods and the devices, the original file is encrypted according to the pressure encryption parameter, and the encryption level is moderate, so that the original file can be prevented from being easily opened, convenience is brought to the encrypted file decryption of the user, and user experiences are improved.
Description
Technical field
The present invention relates to field of information security technology, particularly relate to file encryption decryption method and device.
Background technology
Use the user of mobile terminal device to get more and more now, simultaneously mobile terminal device has also more and more been dissolved in the life of user, such as takes a picture, chats, net purchase etc., thus can the personal secrets problem of corresponding generation user profile.The existing cipher mode to file adopts character password mode usually, although the secret grade of this type of mode is higher, but secret grade is higher, corresponding character password is also more much more complicated, thus user will seem little convenient when deciphering, if and character password arranges too simple, too easily allow other people crack, especially for the encryption of the not high content of some security classification, such as some application program or file etc., user just does not want easily to be opened by other people, simple and efficient during user oneself deciphering simultaneously yet.
Summary of the invention
Fundamental purpose of the present invention is to provide a kind of file encryption decryption method and device, and while being intended to solve and how ensureing that encrypt file is not easily opened by other people, user self also can the technical matters of simple and efficient deciphering.
For achieving the above object, a kind of file encrypting method provided by the invention, described file encrypting method comprises:
Obtain source document to be encrypted;
According to user's pressing operation on mobile terminals, obtain pressure encryption parameter;
According to described pressure encryption parameter and predetermined encryption algorithm, encrypt described source document to generate encrypt file.
Preferably, described pressure encryption parameter at least comprises in force value, pressing duration, compression number, pressing interval time, pressing fingerprint.
Preferably, described according to described pressure encryption parameter and predetermined encryption algorithm, encrypt described source document and comprise to generate encrypt file:
According to described pressure encryption parameter, symmetric encipherment algorithm is adopted to encrypt described source document to generate encrypt file.
Further, for achieving the above object, the present invention also provides a kind of file decryption method, and described file decryption method comprises:
When being decrypted encrypt file, according to user's pressing operation on mobile terminals, obtain pressure deciphering parameter;
Judge whether described pressure deciphering parameter and preset pressure encryption parameter meet and preset decryption mode;
When described pressure deciphering parameter and described preset pressure encryption parameter meet described default decryption mode, deciphering described encrypt file is source document.
Preferably, described pressure deciphering parameter at least comprises in force value, pressing duration, compression number, pressing interval time, pressing fingerprint.
Preferably, described when described pressure deciphering parameter and described preset pressure encryption parameter meet described default decryption mode, deciphering described encrypt file is that source document comprises:
When described pressure deciphering parameter is identical with described preset pressure encryption parameter, deciphering described encrypt file is source document; Or,
When described pressure deciphering parameter not identical with described preset pressure encryption parameter and satisfied preset fault-tolerant threshold range time, deciphering described encrypt file is source document.
Further, for achieving the above object, the present invention also provides a kind of document encrypting apparatus, and described document encrypting apparatus comprises:
Source document acquisition module, for obtaining source document to be encrypted;
Encryption parameter acquisition module, for according to user's pressing operation on mobile terminals, obtains pressure encryption parameter;
Encrypting module, for according to described pressure encryption parameter and predetermined encryption algorithm, encrypts described source document to generate encrypt file.
Preferably, described encryption parameter acquisition module specifically for: according to described pressure encryption parameter, adopt symmetric encipherment algorithm encrypt described source document to generate encrypt file.
Further, for achieving the above object, the present invention also provides a kind of file deciphering device, and described file deciphering device comprises:
Deciphering parameter acquisition module, for when being decrypted encrypt file, according to user's pressing operation on mobile terminals, obtains pressure deciphering parameter;
Judge module, presets decryption mode for judging whether described pressure deciphering parameter and preset pressure encryption parameter meet;
Deciphering module, for when described pressure deciphering parameter and described preset pressure encryption parameter meet described default decryption mode, deciphering described encrypt file is source document.
Preferably, described deciphering module specifically for:
When described pressure deciphering parameter is identical with described preset pressure encryption parameter, deciphering described encrypt file is source document; Or,
When described pressure deciphering parameter not identical with described preset pressure encryption parameter and satisfied preset fault-tolerant threshold range time, deciphering described encrypt file is source document.
Further, for achieving the above object, the present invention also provides a kind of mobile terminal, and described mobile terminal comprises above-mentioned arbitrary described document encrypting apparatus and file deciphering device.
The present invention passes through pressure as encryption parameter, because user self understands encryption parameter, simultaneously corresponding with encryption manner of decryption is simple, user only can need be decrypted in pressing mode, thus after ensure that the general security requirement to encrypt file, also facilitate user's deciphering simultaneously, thus improve the encryption method of the not high file of some security requirements, improve the experience of user encryption deciphering.
Accompanying drawing explanation
Fig. 1 is the hardware configuration signal of the mobile terminal realizing each embodiment of the present invention;
Fig. 2 is the wireless communication system schematic diagram of mobile terminal as shown in Figure 1;
Fig. 3 is the circuit structure exemplary plot of detected pressures signal in file encrypting method one embodiment of the present invention;
Fig. 4 is pressure transducer set-up mode exemplary plot in file encrypting method one embodiment of the present invention;
Fig. 5 is the schematic flow sheet of file encrypting method one embodiment of the present invention;
Fig. 6 is the schematic flow sheet of file decryption method one embodiment of the present invention;
Fig. 7 is the high-level schematic functional block diagram of document encrypting apparatus one embodiment of the present invention;
Fig. 8 is the high-level schematic functional block diagram of file deciphering device one embodiment of the present invention;
Fig. 9 is the high-level schematic functional block diagram of another embodiment of file deciphering device of the present invention;
Figure 10 is the high-level schematic functional block diagram of mobile terminal one 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 such as mobile terminal of mobile phone, smart phone, notebook computer, digit broadcasting receiver, PDA (personal digital assistant), PAD (panel computer), PMP (portable media player), guider etc. and the fixed terminal of such as digital TV, desk-top 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 signal of the mobile terminal realizing each embodiment of the present invention.
Mobile terminal 100 can comprise wireless communication unit 110, A/V (audio/video) input block 120, user input unit 130, sensing cell 140, output unit 150, storer 160, interface unit 170, controller 180 and power supply unit 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 wireless communication between mobile terminal 100 and wireless communication system 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, short range communication module 114 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 broadcast system 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), and the digit broadcasting system of the Radio Data System, received terrestrial digital broadcasting integrated service (ISDB-T) etc. of forward link media (MediaFLO@) receives digital broadcasting.Broadcast reception module 111 can be constructed to be applicable to providing the various broadcast system of broadcast singal and above-mentioned digit broadcasting system.The broadcast singal received via broadcast reception module 111 and/or broadcast related information can be stored in storer 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.
Short range communication module 114 is the modules for supporting junction service.Some examples of short-range communication technology comprise bluetooth
tM, radio-frequency (RF) identification (RFID), Infrared Data Association (I rDA), ultra broadband (UWB), purple honeybee
tMetc..
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 (GPS).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 position and temporal information uses three satellites and by using the error of the position that goes out of an other satellite correction calculation and temporal information.In addition, GPS module 115 can carry out computing velocity information by Continuous plus current location information in real time.
A/V input block 120 is for audio reception or vision signal.A/V input block 120 can comprise camera 121 and microphone 1220, 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 storer 160 (or other storage medium) or via wireless communication unit 110 and send, and can provide two or more cameras 1210 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 sound 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.
Sensing cell 140 detects the current state of mobile terminal 100, (such as, mobile terminal 100 open or close state), the position of mobile terminal 100, user for mobile terminal 100 contact (namely, touch input) presence or absence, the orientation of mobile terminal 100, the acceleration or deceleration of mobile terminal 100 move and direction etc., and generate order or the signal of the operation for controlling mobile terminal 100.Such as, when mobile terminal 100 is embodied as sliding-type mobile phone, sensing cell 140 can sense this sliding-type phone and open or close.In addition, whether whether sensing cell 140 can detect power supply unit 190 provides electric power or interface unit 170 to couple with external device (ED).Sensing cell 140 can comprise proximity transducer 1410 and will be described this in conjunction with touch-screen below.
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 coupling arrangement.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, sound 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, alarm unit 153 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.) be correlated with user interface (U I) or graphic user interface (GU I).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 media and output unit.Display unit 151 can comprise at least one in liquid crystal display (LCD), thin film transistor (TFT) 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 embodiment wanted, mobile terminal 100 can comprise two or more display units (or other display device), 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 storer 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 loudspeaker, hummer etc.
Alarm unit 153 can provide and export that event informed to mobile terminal 100.Typical event can comprise calling reception, message sink, key signals input, touch input etc.Except audio or video exports, alarm unit 153 can provide in a different manner and export with the generation of notification event.Such as, alarm unit 153 can provide output with the form of vibration, when receive calling, message or some other enter communication (incoming communication) time, alarm unit 153 can provide sense of touch to export (that is, vibrating) to notify to user.By providing such sense of touch to export, even if when the mobile phone of user is in the pocket of user, user also can identify the generation of various event.Alarm unit 153 also can provide the output of the generation of notification event via display unit 151 or dio Output Modules 152.
Storer 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, storer 160 can store about when touch be applied to touch-screen time the vibration of various modes that exports and the data of sound signal.
Storer 160 can comprise the storage medium of at least one type, described storage medium comprises flash memory, hard disk, multimedia card, card-type storer (such as, SD or DX storer etc.), random access storage device (RAM), static random-access memory (SRAM), ROM (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 supply unit 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 embodiment described herein can to use such as computer software, the computer-readable medium of hardware or its any combination implements.For hardware implementation, embodiment 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 embodiment can be implemented in controller 180.For implement software, the embodiment of such as process or function can be implemented with allowing the independent software module performing at least one function or operation.Software code can be implemented by the software application (or program) write with any suitable programming language, and software code can be stored in storer 160 and to be performed by controller 180.
So far, oneself is through the mobile terminal according to its functional description.Below, for the sake of brevity, by the slide type mobile terminal that describes in various types of mobile terminals of such as folded form, board-type, oscillating-type, slide type mobile terminal etc. exemplarily.Therefore, the present invention can be applied to the mobile terminal of any type, and is not limited to slide type mobile terminal.
Mobile terminal 100 as shown in Figure 1 can be constructed to utilize and send the such as wired and wireless communication system of data via frame or grouping and satellite-based communication system operates.
Describe wherein according to the communication system that mobile terminal of the present invention can operate referring now to Fig. 2.
Such communication system can use different air interfaces and/or Physical layer.Such as, the air interface used by communication system comprises such as frequency division multiple access (FDMA), time division multiple access (TDMA) (TDMA), CDMA (CDMA) and universal mobile telecommunications system (UMTS) (especially, Long Term Evolution (LTE)), global system for mobile communications (GSM) etc.As non-limiting example, description below relates to cdma communication system, but such instruction is equally applicable to the system of other type.
With reference to figure 2, cdma wireless communication system can comprise multiple mobile terminal 100, multiple base station (BS) 270, base station controller (BSC) 275 and mobile switching centre (MSC) 2800MSC 280 and be constructed to form interface with Public Switched Telephony Network (PSTN) 290.MSC 280 is also constructed to form interface with the BSC 275 that can be couple to base station 270 via back haul link.Back haul link can construct according to any one in some interfaces that oneself knows, described interface comprises such as E 1/T1, ATM, IP, PPP, frame relay, HDSL, ADSL or xDSL.Will be appreciated that system as shown in Figure 2 can comprise multiple BSC2750.
Each BS 270 can serve one or more subregion (or region), by multidirectional antenna or point to specific direction each subregion of antenna cover radially away from BS 270.Or each subregion can by two or more antenna covers for diversity reception.Each BS 270 can be constructed to support multiple parallel compensate, and each parallel compensate has specific frequency spectrum (such as, 1.25MHz, 5MHz etc.).
Subregion can be called as CDMA Channel with intersecting of parallel compensate.BS 270 also can be called as base station transceiver subsystem (BTS) or other equivalent terms.Under these circumstances, term " base station " may be used for broadly representing single BSC 275 and at least one BS 270.Base station also can be called as " cellular station ".Or each subregion of particular B S270 can be called as multiple cellular station.
As shown in Figure 2, broadcast singal is sent to the mobile terminal 100 at operate within systems by broadcsting transmitter (BT) 295.Broadcast reception module 111 as shown in Figure 1 is arranged on mobile terminal 100 and sentences the broadcast singal receiving and sent by BT 295.In fig. 2, several GPS (GPS) satellite 300 is shown.Satellite 300 helps at least one in the multiple mobile terminal 100 in location.
In fig. 2, depict multiple satellite 300, but understand, the satellite of any number can be utilized to obtain useful locating information.GPS module 115 as shown in Figure 1 is constructed to coordinate to obtain the locating information wanted with satellite 300 usually.Substitute GPS tracking technique or outside GPS tracking technique, can use can other technology of position of tracking mobile terminal.In addition, at least one gps satellite 300 optionally or extraly can process satellite dmb transmission.
As a typical operation of wireless communication system, BS 270 receives the reverse link signal from various mobile terminal 100.Mobile terminal 100 participates in call usually, information receiving and transmitting communicates with other type.Each reverse link signal that certain base station 270 receives is processed by particular B S 270.The data obtained are forwarded to relevant BSC 275.BSC provides call Resourse Distribute and comprises the mobile management function of coordination of the soft switching process between BS 270.The data received also are routed to MSC280 by BSC 275, and it is provided for the extra route service forming interface with PSTN 290.Similarly, PSTN290 and MSC 280 forms interface, and MSC and BSC 275 forms interface, and BSC 275 correspondingly control BS270 so that forward link signals is sent to mobile terminal 100.
Based on above-mentioned mobile terminal hardware configuration and communication system, each embodiment of file encrypting method of the present invention, file decryption method is proposed.
With reference to the circuit structure exemplary plot that Fig. 3, Fig. 3 are detected pressures signal in file encrypting method one embodiment of the present invention.
Be understandable that, the circuit structure of detected pressures signal can be arranged according to actual needs, such as, pressure transducer can be adopted to detect pressure.Below will be described in detail with a specific implementation:
As shown in Figure 3, the circuit structure of detected pressures signal can comprise pressure transducer, signal amplifier, ADC converter and MCU processor.Wherein pressure transducer is arranged on mobile terminals, for detecting the deformation on mobile terminal, and according to the different analog voltage signal of the degree output voltage values of deformation to signal amplifier, signal amplifier outputs to ADC converter after carrying out amplifying process to this analog voltage signal and carries out the digital voltage signal that analog to digital conversion obtains correspondence, according to this digital voltage signal, MCU processor will determine that whether user is at pressing mobile terminal.Particularly, MCU processor can judge the force value that user presses and pressure compressing time according to the magnitude of voltage of this digital voltage signal and duration, then allows by the output control signal of the default way of output, to perform corresponding operation.Particularly, this default way of output can be interrupted, GPIO universal input/output is simulated switching signal, communication bus etc.Wherein this communication bus can be the interface such as serial ports, I2C and SPI, but is not limited to above-mentioned interface.
In the present invention, quantity and the setting position of pressure transducer are not limit, and such as arrange one or more, are arranged on below the shell side of mobile terminal, screen, or are arranged on the back of mobile terminal, the below etc. of button.
As shown in Figure 4, for mobile phone, can multiple pressure transducer (A1, A2, A3, A4) be set below the screen of mobile phone, the interface of one or more pressure transducer as pressure detection can be enabled in different modes.Only have when MCU processor detect be activated there is pressure signal in the pressure transducer corresponding as the interface of pressure detection time, just perform corresponding operation.It should be noted that, only just for illustrating but not limiting the concrete setting as Fig. 4 shown in Fig. 4.
In the present embodiment, based on user, the file that screen shows is encrypted, therefore preferred pressure transducer is arranged at below screen.Such as, directly press the application icon on screen, can be encrypted this application program; The file that direct pressing screen shows or picture file or video file, can be encrypted the file of pressing.In addition, the present invention also can further to such as tab page face, hyperlink etc. are encrypted.
With reference to the schematic flow sheet that Fig. 5, Fig. 5 are file encrypting method one embodiment of the present invention.In the present embodiment, described file encrypting method comprises:
Step S110, obtains source document to be encrypted;
Step S120, according to user's pressing operation on mobile terminals, obtains pressure encryption parameter;
Step S130, according to described pressure encryption parameter and predetermined encryption algorithm, encrypts described source document to generate encrypt file.
In the present embodiment, when user needs to be encrypted certain source document on mobile terminal, need to obtain user when pressing on mobile terminals produce the pressure encryption parameter obtained, such as user presses the force value of source document, the fingerprint etc. of user's pressing, in the present embodiment, user can arrange pressure encryption parameter according to self custom.
Preferably, pressure encryption parameter at least comprises in force value, pressing duration, compression number, pressing interval time, pressing fingerprint.In addition, pressure encryption parameter can also be at least one or more in force value, pressing duration, compression number, pressing interval time, pressing fingerprint, also i.e. any one array configuration, and user specifically can be arranged according to self use habit.
Preferably, source document at least comprises executable file, picture file, text, audio-video document, file, tab page.
Press corresponding pressure encryption parameter according to the user got and predetermined encryption algorithm can be encrypted source document, thus generate and obtain encrypt file.Wherein, predetermined encryption algorithm is normal encrypt algorithm, such as symmetric encipherment algorithm DES (Data Encryption Standard, data encryption standards), rivest, shamir, adelman RSA etc.
Alternatively, step S130 specifically comprises: according to described pressure encryption parameter, adopts symmetric encipherment algorithm to encrypt described source document to generate encrypt file.
In the present embodiment, the mode obtaining source document to be encrypted is a lot, such as clicks and chooses source document.By using pressure as encryption parameter, because user self understands encryption parameter, simultaneously corresponding with encryption manner of decryption is simple, user only can need be decrypted in pressing mode, thus after ensure that the general security requirement to encrypt file, also facilitate user's deciphering simultaneously, thus improve the encryption method of the not high file of some security requirements, improve the experience of user encryption deciphering.
Further, reference Fig. 6, Fig. 6 is the schematic flow sheet of file decryption method one embodiment of the present invention.In the present embodiment, described file decryption method comprises:
Step S210, when being decrypted encrypt file, according to user's pressing operation on mobile terminals, obtains pressure deciphering parameter;
Step S220, judges whether described pressure deciphering parameter and preset pressure encryption parameter meet and presets decryption mode;
Step S230, when described pressure deciphering parameter and described preset pressure encryption parameter meet described default decryption mode, deciphering described encrypt file is source document.
In the present embodiment, when needs are decrypted encrypt file, need to obtain pressure deciphering parameter in the mode identical with obtaining pressure encryption parameter, wherein, pressure encryption parameter can be identical with pressure deciphering parameter, also can be different, and lower of different situations need meet corresponding default decryption mode, can be decrypted encrypt file according to the algorithm for inversion of pressure deciphering parameter and cryptographic algorithm, thus obtain source document.
In the present embodiment, after getting pressure deciphering parameter, the pressure deciphering parameter needing to judge that this gets and have whether to meet between preset pressure encryption parameter and preset decryption mode, if meet, then enabling decryption of encrypted file success obtain corresponding source document.
In the present embodiment, pressure deciphering parameter is preferably: at least comprise in force value, pressing duration, compression number, pressing interval time, pressing fingerprint.In addition, pressure deciphering parameter can also be at least one or more in force value, pressing duration, compression number, pressing interval time, pressing fingerprint, also i.e. any one array configuration, and user specifically can be arranged according to self use habit.
In addition, for improving user's experience further, optionally, when starting to be decrypted to encrypt file or decipher unsuccessfully, display deciphering prompting.Such as, prompting user encryption mode or prompting user decryption side to etc., concrete suggestion content can be arranged according to actual needs.
Further alternative, in another embodiment of file decryption method of the present invention, above-mentioned steps S230 comprises:
When described pressure deciphering parameter is identical with described preset pressure encryption parameter, deciphering described encrypt file is source document; Or,
When described pressure deciphering parameter not identical with described preset pressure encryption parameter and satisfied preset fault-tolerant threshold range time, deciphering described encrypt file is source document.
In the present embodiment, preset decryption mode and be preferably: pressure deciphering parameter is identical with preset pressure encryption parameter; Or, pressure deciphering parameter not identical with preset pressure encryption parameter and satisfied preset fault-tolerant threshold range.Wherein, it is identical that pressure deciphering parameter corresponding when considering that user presses at every turn all can not ensure with preset pressure encryption parameter, be certain to there is a little error, therefore, based on above-mentioned error, be provided with default fault-tolerant threshold range, the error produced during to tolerate deciphering between corresponding identical pressure deciphering parameter and pressure encryption parameter, thus avoid the error produced for the disturbing effect deciphered.Optionally, presetting fault-tolerant threshold range can be arranged according to self custom by user, also can be arranged by system default.
Such as, preset pressure encryption parameter is: force value is 5, and compressing time is 3, and pressing index fingerprint discrimination 90%.If pressure deciphering parameter is also: force value is 5, compressing time is 3, and pressing index fingerprint discrimination 90%, then meet above-mentioned default decryption mode, can be decrypted encrypt file and obtain source document.
Again such as, preset pressure encryption parameter is: force value is 5, and compressing time is 3, and pressing index fingerprint discrimination 90%.If and pressure deciphering parameter is: force value is 4.5, compressing time is 3.3, and pressing index fingerprint discrimination 88%, simultaneously, the fault-tolerant threshold range of preset pressure value is (-1, 1), the fault-tolerant threshold range presetting compressing time is (-0.5, 0.5), the fault-tolerant threshold range presetting pressing fingerprint recognition rate is (-10%, 10%), if also namely identical pressure deciphering parameter value with the difference between pressure encryption parameter value within corresponding fault-tolerant threshold range, then meet and preset decryption mode, obvious above-mentioned citing meets presets decryption mode, therefore, can successful decryption and obtain source document.
The error effect passing through pressing form input pressure deciphering parameter for avoiding user and may bring, in the present embodiment, by setting up fault-tolerant threshold range thus while facilitating user to input, also ensure that the security of encrypt file, improves user's experience.
With reference to the high-level schematic functional block diagram that Fig. 7, Fig. 7 are document encrypting apparatus one embodiment of the present invention.In the present embodiment, described document encrypting apparatus comprises:
Source document acquisition module 310, for obtaining source document to be encrypted;
Encryption parameter acquisition module 320, for according to user's pressing operation on mobile terminals, obtains pressure encryption parameter;
Encrypting module 330, for according to described pressure encryption parameter and predetermined encryption algorithm, encrypts described source document to generate encrypt file.
In the present embodiment, when user needs to be encrypted certain source document on mobile terminal, need to obtain user when pressing on mobile terminals produce the pressure encryption parameter obtained, the force value of such as user's pressing, the fingerprint etc. of user's pressing, in the present embodiment, user can arrange pressure encryption parameter according to self custom.
Preferably, pressure encryption parameter at least comprises in force value, pressing duration, compression number, pressing interval time, pressing fingerprint.
Preferably, source document at least comprises executable file, picture file, text, audio-video document, file, tab page.
Press corresponding pressure encryption parameter according to the user got and predetermined encryption algorithm can be encrypted source document, thus generate and obtain encrypt file.Wherein, predetermined encryption algorithm is normal encrypt algorithm, such as symmetric encipherment algorithm DES (Data Encryption Standard, data encryption standards), rivest, shamir, adelman RSA etc.
Alternatively, encrypting module 330 specifically for: according to described pressure encryption parameter, adopt symmetric encipherment algorithm encrypt described source document to generate encrypt file.
In the present embodiment, by using pressure as encryption parameter, because user self understands encryption parameter, simultaneously corresponding with encryption manner of decryption is simple, user only can need be decrypted in pressing mode, thus after ensure that the general security requirement to encrypt file, also facilitates user's deciphering simultaneously, thus improve the encryption method of the not high file of some security requirements, improve the experience of user encryption deciphering.
With reference to the high-level schematic functional block diagram that Fig. 8, Fig. 8 are file deciphering device one embodiment of the present invention.In the present embodiment, described file deciphering device comprises:
Deciphering parameter acquisition module 410, for when being decrypted encrypt file, according to user's pressing operation on mobile terminals, obtains pressure deciphering parameter;
Judge module 420, presets decryption mode for judging whether described pressure deciphering parameter and preset pressure encryption parameter meet;
Deciphering module 430, for when described pressure deciphering parameter and described preset pressure encryption parameter meet described default decryption mode, deciphering described encrypt file is source document.
In the present embodiment, when needs are decrypted encrypt file, need to obtain pressure deciphering parameter in the mode identical with obtaining pressure encryption parameter, wherein, pressure encryption parameter can be identical with pressure deciphering parameter, also can be different, and lower of different situations need meet corresponding default decryption mode, can be decrypted encrypt file according to the algorithm for inversion of pressure deciphering parameter and cryptographic algorithm, thus obtain source document.
In the present embodiment, after getting pressure deciphering parameter, the pressure deciphering parameter needing to judge that this gets and have whether to meet between preset pressure encryption parameter and preset decryption mode, if meet, then enabling decryption of encrypted file success obtain corresponding source document.
In the present embodiment, pressure deciphering parameter is preferably: at least comprise any combination in force value, pressing duration, compression number, pressing interval time, pressing fingerprint.
In addition, for improving user's experience further, optionally, with reference to Fig. 9, described file deciphering device also comprises:
Prompting display module 440, when starting to be decrypted to encrypt file or decipher unsuccessfully, display is deciphered and is pointed out.Such as, prompting user encryption mode or prompting user decryption side to etc., concrete suggestion content can be arranged according to actual needs.
Further, in another embodiment of file deciphering device of the present invention, described deciphering module 430 specifically for:
When described pressure deciphering parameter is identical with described preset pressure encryption parameter, deciphering described encrypt file is source document; Or,
When described pressure deciphering parameter not identical with described preset pressure encryption parameter and satisfied preset fault-tolerant threshold range time, deciphering described encrypt file is source document.
In the present embodiment, preset decryption mode and be preferably: pressure deciphering parameter is identical with preset pressure encryption parameter; Or, pressure deciphering parameter not identical with preset pressure encryption parameter and satisfied preset fault-tolerant threshold range.Wherein, it is identical that pressure deciphering parameter corresponding when considering that user presses at every turn all can not ensure with preset pressure encryption parameter, be certain to there is a little error, therefore, based on above-mentioned error, be provided with default fault-tolerant threshold range, the error produced during to tolerate deciphering between corresponding identical pressure deciphering parameter and pressure encryption parameter, thus avoid the error produced for the disturbing effect deciphered.Optionally, presetting fault-tolerant threshold range can be arranged according to self custom by user, also can be arranged by system default.
Such as, preset pressure encryption parameter is: force value is 5, and compressing time is 3, and pressing index fingerprint discrimination 90%.If pressure deciphering parameter is also: force value is 5, compressing time is 3, and pressing index fingerprint discrimination 90%, then meet above-mentioned default decryption mode, can be decrypted encrypt file and obtain source document.
Again such as, preset pressure encryption parameter is: force value is 5, and compressing time is 3, and pressing index fingerprint discrimination 90%.If and pressure deciphering parameter is: force value is 4.5, compressing time is 3.3, and pressing index fingerprint discrimination 88%, simultaneously, the fault-tolerant threshold range of preset pressure value is (-1, 1), the fault-tolerant threshold range presetting compressing time is (-0.5, 0.5), the fault-tolerant threshold range presetting pressing fingerprint recognition rate is (-10%, 10%), if also namely identical pressure deciphering parameter value with the difference between pressure encryption parameter value within corresponding fault-tolerant threshold range, then meet and preset decryption mode, obvious above-mentioned citing meets presets decryption mode, therefore, can successful decryption and obtain source document.
The error effect passing through pressing form input pressure deciphering parameter for avoiding user and may bring, in the present embodiment, by setting up fault-tolerant threshold range thus while facilitating user to input, also ensure that the security of encrypt file, improves user's experience.
With reference to the high-level schematic functional block diagram that Figure 10, Figure 10 are mobile terminal one embodiment of the present invention.In the present embodiment, described mobile terminal comprises document encrypting apparatus 510 and file deciphering device 520.
In the present embodiment, mobile terminal obtains pressure encryption parameter by document encrypting apparatus 510, thus obtains encrypt file after being encrypted source document; Simultaneously, when needs are decrypted encrypt file, mobile terminal obtains pressure deciphering parameter by file deciphering device 520, judge whether pressure deciphering parameter and the preset pressure encryption parameter of acquisition meet default decryption mode simultaneously, if meet, then file deciphering device 520 is deciphered pressure file and is obtained source document.
In the present embodiment, by using pressure as encrypt/decrypt parameter, thus user only need can be encrypted/decipher in pressing mode, thus after ensure that the general security requirement to encrypt file, also facilitate user's deciphering simultaneously, thus improve the encryption method of the not high file of some security requirements, improve the experience of user encryption deciphering.
It should be noted that, in this article, term " comprises ", " comprising " or its any other variant are intended to contain comprising of nonexcludability, thus make to comprise the process of a series of key element, method, article or device and not only comprise those key elements, but also comprise other key elements clearly do not listed, or also comprise by the intrinsic key element of this process, method, article or device.When not more restrictions, the key element limited by statement " comprising ... ", and be not precluded within process, method, article or the device comprising this key element and also there is other identical element.
The invention described above embodiment sequence number, just to describing, does not represent the quality of embodiment.
Through the above description of the embodiments, those skilled in the art can be well understood to the mode that above-described embodiment method can add required general hardware platform by software and realize, hardware can certainly be passed through, but in a lot of situation, the former is better embodiment.Based on such understanding, technical scheme of the present invention can embody with the form of software product the part that prior art contributes in essence in other words, this computer software product is stored in a storage medium (as ROM/RAM, magnetic disc, CD), comprising some instructions in order to make a station terminal equipment (can be mobile phone, computing machine, server, air conditioner, or the network equipment etc.) perform method described in each embodiment of the present invention.
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 instructions 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. a file encrypting method, is characterized in that, described file encrypting method comprises:
Obtain source document to be encrypted;
According to user's pressing operation on mobile terminals, obtain pressure encryption parameter;
According to described pressure encryption parameter and predetermined encryption algorithm, encrypt described source document to generate encrypt file.
2. file encrypting method as claimed in claim 1, is characterized in that, described pressure encryption parameter at least comprises one in force value, pressing duration, compression number, pressing interval time, pressing fingerprint.
3. file encrypting method as claimed in claim 1 or 2, is characterized in that, described according to described pressure encryption parameter and predetermined encryption algorithm, encrypts described source document and comprises to generate encrypt file:
According to described pressure encryption parameter, symmetric encipherment algorithm is adopted to encrypt described source document to generate encrypt file.
4. a file decryption method, is characterized in that, described file decryption method comprises:
When being decrypted encrypt file, according to user's pressing operation on mobile terminals, obtain pressure deciphering parameter;
Judge whether described pressure deciphering parameter and preset pressure encryption parameter meet and preset decryption mode;
When described pressure deciphering parameter and described preset pressure encryption parameter meet described default decryption mode, deciphering described encrypt file is source document.
5. file decryption method as claimed in claim 4, is characterized in that, described pressure deciphering parameter at least comprises one in force value, pressing duration, compression number, pressing interval time, pressing fingerprint.
6. file decryption method as claimed in claim 5, it is characterized in that, described when described pressure deciphering parameter and described preset pressure encryption parameter meet described default decryption mode, deciphering described encrypt file is that source document comprises:
When described pressure deciphering parameter is identical with described preset pressure encryption parameter, deciphering described encrypt file is source document; Or,
When described pressure deciphering parameter not identical with described preset pressure encryption parameter and satisfied preset fault-tolerant threshold range time, deciphering described encrypt file is source document.
7. a document encrypting apparatus, is characterized in that, described document encrypting apparatus comprises:
Source document acquisition module, for obtaining source document to be encrypted;
Encryption parameter acquisition module, for according to user's pressing operation on mobile terminals, obtains pressure encryption parameter;
Encrypting module, for according to described pressure encryption parameter and predetermined encryption algorithm, encrypts described source document to generate encrypt file.
8. document encrypting apparatus as claimed in claim 7, is characterized in that, described encryption parameter acquisition module specifically for: according to described pressure encryption parameter, adopt symmetric encipherment algorithm to encrypt described source document to generate encrypt file.
9. a file deciphering device, is characterized in that, described file deciphering device comprises:
Deciphering parameter acquisition module, for when being decrypted encrypt file, according to user's pressing operation on mobile terminals, obtains pressure deciphering parameter;
Judge module, presets decryption mode for judging whether described pressure deciphering parameter and preset pressure encryption parameter meet;
Deciphering module, for when described pressure deciphering parameter and described preset pressure encryption parameter meet described default decryption mode, deciphering described encrypt file is source document.
10. file deciphering device as claimed in claim 9, is characterized in that, described deciphering module specifically for:
When described pressure deciphering parameter is identical with described preset pressure encryption parameter, deciphering described encrypt file is source document; Or,
When described pressure deciphering parameter not identical with described preset pressure encryption parameter and satisfied preset fault-tolerant threshold range time, deciphering described encrypt file is source document.
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Application publication date: 20150916 |