CN106650371B - Electronic device encrypted through signature and unlocking method thereof - Google Patents
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- G06F21/30—Authentication, i.e. establishing the identity or authorisation of security principals
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Abstract
The invention discloses electronic equipment encrypted through a signature and an unlocking method thereof. The method comprises the following steps: when a display screen of the electronic equipment is awakened, displaying a preset edit box on the display screen; acquiring signature content input in an edit box, and storing coordinates of the signature content in at least one array; when the number of the at least one array is the same as the preset number, judging whether the signature content is matched with the preset signature content; and if the matching is successful, unlocking the electronic equipment. The invention can improve the safety of the electronic equipment and does not increase the extra hardware cost.
Description
Technical Field
The invention relates to the technical field of electronic equipment, in particular to electronic equipment encrypted through a signature and an unlocking method thereof.
Background
At present, electronic devices are increasingly popular in daily life of people, and in order to avoid the privacy of electronic devices being acquired by third parties, existing electronic devices are all provided with encryption technology. Commonly used encryption techniques include fingerprint encryption, digital password encryption, or graphic encryption, etc., wherein the fingerprint encryption is relatively secure, but requires relatively high hardware and software costs. Although the hardware cost is not increased, the digital password encryption and the graphic encryption are easy to crack by others, and the safety performance is low.
Disclosure of Invention
The invention mainly solves the technical problem of providing the electronic equipment encrypted by the signature and the unlocking method thereof, which can improve the safety of the electronic equipment and do not increase extra hardware cost.
In order to solve the technical problems, the invention adopts a technical scheme that: provided is a method for unlocking an electronic device encrypted by a signature, including:
when a display screen of the electronic equipment is awakened, displaying a preset edit box on the display screen;
acquiring signature content input in an edit box, and storing coordinates of the signature content in at least one array;
when the number of the at least one array is the same as the preset number, judging whether the signature content is matched with the preset signature content;
and if the matching is successful, unlocking the electronic equipment.
Wherein, the unlocking method further comprises the following steps:
when the number of the at least one array is different from the preset number, judging whether signature content is continuously input in the edit box within the preset time;
and if not, or the signature content fails to be matched with the preset signature content, emptying the editing box.
Before the step when the display screen of the electronic device is awakened, the unlocking method further includes:
setting preset signature content, and displaying an edit box on a display screen;
and taking one continuous touch screen input in the edit box as a group of data, wherein each group of data is a coordinate value of preset signature content.
The step of judging whether the signature content is matched with the preset signature content comprises the following steps:
respectively checking each array;
if the check of each array passes, the matching is successful;
the step of checking each array separately comprises:
if the array comprises a coordinate value, subtracting the coordinate value of the corresponding data from the coordinate value of the corresponding data to obtain a first difference value, and if the first difference value is within a preset threshold range, the array passes the check.
Wherein, the step of checking each array respectively comprises:
if the array comprises a plurality of coordinate values, subtracting the coordinate value of each coordinate value and the coordinate value of the corresponding data to obtain a second difference value;
when the second difference is smaller than a preset first threshold, acquiring a third difference between two adjacent coordinate values in the plurality of coordinate values, and acquiring a fourth difference between two adjacent coordinate values in the coordinate values of the data;
and if a fifth difference value between the third difference value and the corresponding fourth difference value is smaller than a preset second threshold value, the verification of the array is passed.
In order to solve the technical problem, the invention adopts another technical scheme that: there is provided an electronic device encrypted by a signature, comprising:
the display screen is used for displaying a preset edit box when the display screen is awakened;
the processing module is connected with the display screen and used for acquiring the signature content input in the edit box;
the storage module is connected with the processing module and used for storing the coordinates of the signature content in at least one array;
when the number of the at least one array is the same as the preset number, the processing module judges whether the signature content is matched with the preset signature content or not; and if the matching is successful, the processing module unlocks the electronic equipment.
When the number of the at least one array is different from the preset number, the processing module further judges whether signature content is continuously input in the edit box within the preset time;
and if the signature content is not matched with the preset signature content or the matching between the signature content and the preset signature content fails, emptying the editing box by the processing module.
The processing module is further used for setting preset signature content, one continuous touch screen input in the edit box is used as a group of data by the processing module, and each group of data is a coordinate value of the preset signature content.
The processing module respectively checks each array; if the check of each array passes, the matching is successful;
if the array comprises a coordinate value, the processing module subtracts the coordinate value from the coordinate value of the corresponding data to obtain a first difference value, and if the first difference value is within a preset threshold range, the array passes the check.
If the array comprises a plurality of coordinate values, the processing module subtracts each coordinate value from the corresponding coordinate value of the data to obtain a second difference value;
when the second difference is smaller than a preset first threshold, the processing module acquires a third difference between two adjacent coordinate values in the coordinate values and acquires a fourth difference between two adjacent coordinate values in the coordinate values of the data;
and if a fifth difference value between the third difference value and the corresponding fourth difference value is smaller than a preset second threshold value, the verification of the array is passed.
The invention has the beneficial effects that: different from the situation of the prior art, the method and the device display the preset edit box on the display screen when the display screen of the electronic equipment is awakened; acquiring signature content input in an edit box, and storing coordinates of the signature content in at least one array; when the number of the at least one array is the same as the preset number, judging whether the signature content is matched with the preset signature content; if the matching is successful, unlocking the electronic equipment; due to the variability of the signature content, the safety of the electronic equipment is improved, and the additional hardware cost is not increased.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required to be adopted in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on the drawings without creative efforts. Wherein:
fig. 1 is a flowchart of an unlocking method of an electronic device encrypted by a signature according to an embodiment of the present invention;
FIG. 2 is a schematic view of a setup interface of the electronic device of FIG. 1;
FIG. 3 is a schematic diagram of the edit box of FIG. 1;
FIG. 4 is a block diagram of an electronic device encrypted by a signature according to an embodiment of the invention;
fig. 5 is a schematic diagram of a hardware structure of an electronic device encrypted by a signature according to an embodiment of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1, fig. 1 is a flowchart illustrating an unlocking method of an electronic device encrypted by a signature according to an embodiment of the present invention. As shown in fig. 1, the unlocking method disclosed in this embodiment is applied to an electronic device, and the unlocking method includes the following steps:
s11: when a display screen of the electronic equipment is awakened, displaying a preset edit box on the display screen;
before step S11, the electronic device turns on the signature unlock function, for example, the user selects the "signature encryption" option in the "settings" menu of the electronic device, as shown in fig. 2. After the electronic equipment starts the signature unlocking function, the electronic equipment starts to monitor whether the display screen is awakened or not.
After the user selects the "signature encryption" option, the electronic device further sets the preset signature content, and displays an edit box on the display screen, where the edit box has the same size and position as the edit box displayed on the display screen when the display screen is woken up, as shown in fig. 3. The electronic equipment inputs one continuous touch screen input in the edit box as a group of data, wherein each group of data is a coordinate value of the preset signature content. For example, if the preset signature content is C2, the electronic device sets the coordinate value of C as one set of data and sets the coordinate value of 2 as another set of data.
The electronic device judges one continuous touch screen input through the MotionEvent class, and stores the data in the Mobile _ info partition. Specifically, the electronic device obtains a current touch screen action of the user through getAction (); if the current point is ACTION _ DOWN, the user is indicated to touch the screen, the signature content is started to be input, and the coordinates of the current point are saved; if an ACTION _ MOV is detected, indicating that the user is moving the current coordinates, the electronic device begins recording all data until an ACTION _ UP is detected. The specific implementation process is as follows:
when the display screen of the electronic device is awakened, that is, when the electronic device monitors that the user presses the set-up key or double-clicks the screen, a preset edit box is displayed on the display screen, where the edit box is the same as the edit box shown in fig. 3.
S12: acquiring signature content input in an edit box, and storing coordinates of the signature content in at least one array;
the electronic equipment acquires the signature content input by the user in the edit box and stores the coordinates of the signature content in at least one array. The electronic equipment stores the coordinate values input by the user through one continuous touch screen in an array. For example, the user enters C2 in the edit box, the electronic device stores the coordinates of C in one array and the coordinates of 2 in another array.
And when the signature content input by the user is outside the editing frame, the electronic equipment judges that the signature content is invalid and keeps locking the screen.
S13: when the number of the at least one array is the same as the preset number, judging whether the signature content is matched with the preset signature content;
the electronic device further counts the number of the at least one array. Before step S11, when the electronic device enters one continuous touch screen input at the edit box as a set of data, the electronic device further sets a preset number according to the amount of data, for example, the preset number is 2.
And when the number of the at least one array is different from the preset number, the electronic equipment judges whether to continue inputting the signature content in the edit box within the preset time. For example, the electronic device determines whether the user continues to enter signature content in the edit box within 10 seconds.
If not, or the signature content fails to match the preset signature content, that is, the electronic device determines that the signature content is not continuously input in the edit box within the preset time, or the electronic device determines that the signature content fails to match the preset signature content, step S15 is performed, that is, the electronic device clears the edit box.
The step of judging whether the signature content is matched with the preset signature content by the electronic equipment specifically comprises the following steps:
the electronic equipment respectively checks each array;
if the array comprises a coordinate value, the electronic equipment subtracts the coordinate value from the coordinate value of the corresponding data to obtain a first difference value, and if the electronic equipment judges that the first difference value is within a preset threshold range, the check of the array is passed. For example, the array includes a coordinate value (x1, y1), and the coordinate value (x2, y2) of the corresponding data, the first difference is x1-x2 or y1-y2, if the first difference is within a preset threshold range, the electronic device determines that the check of the array is passed, and the preset threshold range may be within a range of plus or minus 20.
If the array comprises a plurality of coordinate values, the electronic equipment subtracts each coordinate value from the corresponding coordinate value of the data to obtain a second difference value; for example, the array includes coordinate values (X1, Y1), (X2, Y2) and (X3, Y3), and the coordinate values of the corresponding data are (X1, Y1), (X2, Y2) and (X3, Y3), and the second difference value may be X1-X1, Y1-Y1, X2-X2, Y2-Y2, X3-X3 or Y3-Y3.
When the second difference is smaller than a preset first threshold, the electronic device acquires a third difference between two adjacent coordinate values among the plurality of coordinate values, and acquires a fourth difference between two adjacent coordinate values among the coordinate values of the data. The second difference is smaller than a preset first threshold, that is, X1-X1, Y1-Y1, X2-X2, Y2-Y2, X3-X3 and Y3-Y3 are all smaller than the preset first threshold, and the first threshold may be 10. The third difference may be X1-X2, Y1-Y2, X2-X3, or Y2-Y3, and the fourth difference may be X1-X2, Y1-Y2, X2-X3, or Y2-Y3.
And if a fifth difference value between the third difference value and the corresponding fourth difference value is smaller than a preset second threshold value, the electronic equipment judges that the array passes the verification. The fifth difference value may be X1-X2- (X1-X2), Y1-Y2- (Y1-Y2), X2-X3- (X2-X3) or Y2-Y3- (Y2-Y3), where X1-X2- (X1-X2), Y1-Y2- (Y1-Y2), X2-X3- (X2-X3) and Y2-Y3- (Y2-Y3) are all less than a preset second threshold, and the electronic device determines that the array passes the check, and the second threshold may be 5.
S14: if the matching is successful, unlocking the electronic equipment;
and if the matching is successful, namely the electronic equipment passes the verification of each array, the electronic equipment is unlocked successfully.
S15: if the matching fails, the edit box is cleared, and the process returns to step S12.
And if the matching fails, namely the electronic equipment fails to check any one of the arrays in the check of each array, the electronic equipment empties the edit box.
The signature content of the embodiment is diversified, so that the safety of the electronic equipment is improved, the additional hardware cost is not increased, and the implementation is easy.
The invention also provides an electronic device encrypted by a signature, which is described on the basis of the unlocking method disclosed by the above embodiment. As shown in fig. 4, the electronic device 40 includes a display screen 41, a processing module 42, and a storage module 43.
Wherein, the processing module 42 is respectively connected with the display screen 41 and the storage module 43. First, the electronic device 40 turns on the signature unlock function, for example, the user selects the "signature encryption" option in the "settings" menu of the electronic device 40, as shown in fig. 2. After the electronic device 40 turns on the signature unlock function, the processing module 42 starts to monitor whether the display 41 is woken up.
After the user selects the "signature encryption" option, the processing module 42 is configured to set the preset signature content, and display an edit box on the display 41, where the edit box has the same size and position as the edit box displayed on the display 41 when the display 41 is woken up, as shown in fig. 3. The user inputs preset signature content in the edit box, where the signature content may include characters, numbers, or graphics, and the processing module 42 uses one continuous touch screen input in the edit box as a set of data, where each set of data is a coordinate value of the preset signature content. For example, if the preset signature content is C2, the processing module 42 uses the coordinate value of C as one set of data and uses the coordinate value of 2 as another set of data.
The processing module 42 determines a continuous touch screen input through the MotionEvent class, and stores the data in the Mobile _ info partition. Specifically, the processing module 42 obtains the current touch screen action of the user through getAction (); if the current point is ACTION _ DOWN, the user is indicated to touch the screen, the signature content is started to be input, and the coordinates of the current point are saved; if an ACTION _ MOV is detected, indicating that the user is moving the current coordinates, processing block 42 begins recording all data until an ACTION _ UP is detected.
When the display screen 41 is woken up, that is, the processing module 42 monitors that the user presses the power key or double-clicks the screen, a preset edit box is displayed on the display screen 41. I.e. the display 41 is used to display a pre-set edit box when the display 41 is woken up.
The processing module 42 is used for acquiring the signature content input by the user in the edit box; the storage module 43 is configured to store the coordinates of the signature content in at least one array. The storage module 43 stores the coordinate values input by the user through one continuous touch screen in an array. For example, if the user enters C2 in the edit box, the storage module 43 stores the coordinates of C in one array and the coordinates of 2 in another array.
When the user inputs the signature content outside the edit box, the processing module 42 determines that the signature content is invalid and keeps the screen locked.
When the number of the at least one array is different from the preset number, the processing module 42 determines whether to continue to input the signature content in the edit box within the preset time. For example, the processing module 42 determines whether the user continues to enter signature content in the edit box within 10 seconds.
If not, or if the matching between the signature content and the preset signature content fails, that is, the processing module 42 determines that the signature content is not continuously input in the edit box within the preset time, or the processing module 42 determines that the matching between the signature content and the preset signature content fails, the processing module 42 clears the edit box.
Wherein, the processing module 42 checks each array respectively; if the array includes a coordinate value, the processing module 42 subtracts the coordinate value from the coordinate value of the corresponding data to obtain a first difference value, and if the processing module 42 determines that the first difference value is within the preset threshold range, the check of the array is passed. For example, the array includes coordinate values (x1, y1), and the coordinate values (x2, y2) of the corresponding data, the first difference is x1-x2 or y1-y2, if the first difference is within a preset threshold range, the processing module 42 determines that the check of the array is passed, and the preset threshold range may be within a range of plus or minus 20.
If the array includes a plurality of coordinate values, the processing module 42 subtracts each coordinate value from the corresponding coordinate value of the data to obtain a second difference value; for example, the array includes coordinate values (X1, Y1), (X2, Y2) and (X3, Y3), and the coordinate values of the corresponding data are (X1, Y1), (X2, Y2) and (X3, Y3), and the second difference value may be X1-X1, Y1-Y1, X2-X2, Y2-Y2, X3-X3 or Y3-Y3.
When the second difference is smaller than the preset first threshold, the processing module 42 obtains a third difference between two adjacent coordinate values in the plurality of coordinate values, and obtains a fourth difference between two adjacent coordinate values in the coordinate values of the data. The second difference is smaller than a preset first threshold, that is, X1-X1, Y1-Y1, X2-X2, Y2-Y2, X3-X3 and Y3-Y3 are all smaller than the preset first threshold, and the first threshold may be 10. The third difference may be X1-X2, Y1-Y2, X2-X3, or Y2-Y3, and the fourth difference may be X1-X2, Y1-Y2, X2-X3, or Y2-Y3.
If a fifth difference between the third difference and the corresponding fourth difference is smaller than the preset second threshold, the processing module 42 determines that the check of the array is passed. The fifth difference value may be X1-X2- (X1-X2), Y1-Y2- (Y1-Y2), X2-X3- (X2-X3), or Y2-Y3- (Y2-Y3), where X1-X2- (X1-X2), Y1-Y2- (Y1-Y2), X2-X3- (X2-X3), and Y2-Y3- (Y2-Y3) are all smaller than a preset second threshold, and the processing module 42 determines that the array passes the check, where the second threshold may be 5.
If the matching is successful, that is, the processing module 42 passes the check of each array, the electronic device is unlocked successfully.
If the matching fails, that is, the processing module 42 fails to check any one of the array checks of each array, the electronic device clears the edit box.
It should be understood that the division of the above-described modules into one logical functional division may be implemented in other ways, for example, two modules may be integrated into another system, or some features may be omitted, or not implemented. In addition, the modules may be connected to each other through some interfaces, and may also be in an electrical or other form. The modules may be implemented in the form of software functional blocks, or in the form of hardware, for example, as shown in fig. 5.
As shown in fig. 5, the electronic device 40 includes at least one processor 51, at least one memory 52, at least one communication bus 53 and a display 54, wherein the communication bus 53 is used for the processor 41 to call various data, and the memory 52 is used for storing program instructions. For convenience of explanation, the number of the processor 51, the memory 52, and the communication bus 53 is one in fig. 5. The display screen 54 is used for displaying a preset edit box when the display screen 51 is woken up.
The processor 51 is configured to:
executing program instructions to obtain signed content entered at the edit box;
executing the program instruction to judge whether the signature content is matched with the preset signature content when the number of the at least one array is the same as the preset number; and if the matching is successful, unlocking the electronic equipment.
In all the above embodiments, the electronic device may be a mobile electronic device such as a smart phone, a portable communication device, a PDA (Personal Digital Assistant or tablet computer), a notebook computer, or the like, or may be a wearable device worn on a limb or embedded in clothes, jewelry, or accessories, or may be other intelligent electronic devices with a data storage function.
The above description is only an embodiment of the present invention, and not intended to limit the scope of the present invention, and all modifications of equivalent structures and equivalent processes performed by the present specification and drawings, or directly or indirectly applied to other related technical fields, are included in the scope of the present invention.
Claims (6)
1. An unlocking method of an electronic device encrypted by a signature, the unlocking method comprising:
setting preset signature content, and displaying an edit box on a display screen of the electronic equipment;
inputting a continuous touch screen of the edit box as a group of data, wherein each group of data is a coordinate value of the preset signature content;
displaying the edit box on a display screen of the electronic equipment when the display screen is awakened;
acquiring the signature content input in the edit box, and storing the coordinates of the signature content in at least one array;
when the number of the at least one array is the same as the preset number, judging whether the signature content is matched with the preset signature content;
if the matching is successful, unlocking the electronic equipment;
when the number of the at least one array is different from the preset number, judging whether signature content is continuously input in the edit box within preset time;
and if not, or the signature content fails to be matched with the preset signature content, emptying the editing box.
2. The unlocking method according to claim 1, wherein the step of determining whether the signature content matches a preset signature content comprises:
respectively checking each array;
if the check of each array passes, the matching is successful;
the step of checking each array separately comprises:
and if the array comprises a coordinate value, subtracting the coordinate value of the data from the coordinate value of the data to obtain a first difference value, and if the first difference value is within a preset threshold range, passing the check of the array.
3. The unlocking method according to claim 2, wherein the step of separately checking each array comprises:
if the array comprises a plurality of coordinate values, subtracting the coordinate value of the data corresponding to each coordinate value to obtain a second difference value;
when the second difference is smaller than a preset first threshold, acquiring a third difference between two adjacent coordinate values in the plurality of coordinate values, and acquiring a fourth difference between two adjacent coordinate values in the coordinate values of the data;
and if a fifth difference value between the third difference value and the corresponding fourth difference value is smaller than a preset second threshold value, the verification of the array is passed.
4. An electronic device encrypted by a signature, the electronic device comprising:
the display screen is used for displaying a preset edit box when the display screen is awakened;
the processing module is connected with the display screen and used for acquiring the signature content input in the edit box; the processing module is further used for setting preset signature content, one continuous touch screen input of the edit box is taken as a group of data by the processing module, and each group of data is a coordinate value of the preset signature content;
the storage module is connected with the processing module and used for storing the coordinates of the signature content in at least one array;
when the number of the at least one array is the same as the preset number, the processing module judges whether the signature content is matched with the preset signature content or not; if the matching is successful, the processing module unlocks the electronic equipment; when the number of the at least one array is different from the preset number, the processing module further judges whether signature content is continuously input in the edit box within a preset time;
and if the signature content is not matched with the preset signature content, or the signature content is not matched with the preset signature content, the processing module empties the editing box.
5. The electronic device of claim 4, wherein the processing module checks each array separately; if the check of each array passes, the matching is successful;
if the array comprises a coordinate value, the processing module subtracts the coordinate value from the corresponding coordinate value of the data to obtain a first difference value, and if the first difference value is within a preset threshold range, the array passes the verification.
6. The electronic device according to claim 5, wherein if the array includes a plurality of coordinate values, the processing module subtracts each coordinate value from the corresponding coordinate value of the data to obtain a second difference value;
when the second difference is smaller than a preset first threshold, the processing module acquires a third difference between two adjacent coordinate values in the plurality of coordinate values and acquires a fourth difference between two adjacent coordinate values in the coordinate values of the data;
and if a fifth difference value between the third difference value and the corresponding fourth difference value is smaller than a preset second threshold value, the verification of the array is passed.
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| CN103294334B (en) * | 2012-03-05 | 2017-03-01 | 北京三星通信技术研究有限公司 | Unlocking screen data access control method and safety control |
| CN102722328A (en) * | 2012-05-25 | 2012-10-10 | 北京壹人壹本信息科技有限公司 | Method for unlocking electronic device and electronic device |
| CN103023658B (en) * | 2012-12-28 | 2015-04-01 | 杭州晟元芯片技术有限公司 | Identity authentication method and identity authentication system based on signature |
| US10095851B2 (en) * | 2013-08-30 | 2018-10-09 | Samsung Electronics Co., Ltd. | Electronic device and inputted signature processing method of electronic device |
| US9665738B2 (en) * | 2014-07-18 | 2017-05-30 | Mediatek Inc. | Electronic devices and signature wakeup methods thereof |
| CN104134066B (en) * | 2014-08-08 | 2017-06-16 | 科进生物识别(深圳)有限公司 | For the recognition methods of static signature |
| CN104601809A (en) * | 2014-12-30 | 2015-05-06 | 西安乾易企业管理咨询有限公司 | Handwriting unlocking method based on smart touch screen mobile phone |
| CN105976516B (en) * | 2016-04-21 | 2019-09-20 | 深圳市旭子科技有限公司 | Touch Encryption Keyboard and data entry device |
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