CN109068021A - A kind of encryption and decryption method and system - Google Patents
A kind of encryption and decryption method and system Download PDFInfo
- Publication number
- CN109068021A CN109068021A CN201810982109.8A CN201810982109A CN109068021A CN 109068021 A CN109068021 A CN 109068021A CN 201810982109 A CN201810982109 A CN 201810982109A CN 109068021 A CN109068021 A CN 109068021A
- Authority
- CN
- China
- Prior art keywords
- array
- encryption
- key
- encrypted
- pixels
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 238000000034 method Methods 0.000 title claims abstract description 78
- 238000003491 array Methods 0.000 claims abstract description 29
- 238000004422 calculation algorithm Methods 0.000 claims description 15
- 238000004590 computer program Methods 0.000 claims description 12
- 239000000284 extract Substances 0.000 claims description 10
- 230000010365 information processing Effects 0.000 claims description 9
- 238000000605 extraction Methods 0.000 claims description 6
- 230000005055 memory storage Effects 0.000 claims description 6
- 238000010586 diagram Methods 0.000 description 9
- 239000000203 mixture Substances 0.000 description 8
- 238000005516 engineering process Methods 0.000 description 2
- 238000005194 fractionation Methods 0.000 description 2
- 238000013475 authorization Methods 0.000 description 1
- 230000003796 beauty Effects 0.000 description 1
- 238000004364 calculation method Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
Classifications
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
- G06T1/00—General purpose image data processing
- G06T1/0021—Image watermarking
-
- 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
- G06F21/10—Protecting distributed programs or content, e.g. vending or licensing of copyrighted material ; Digital rights management [DRM]
Landscapes
- Engineering & Computer Science (AREA)
- Theoretical Computer Science (AREA)
- Software Systems (AREA)
- General Physics & Mathematics (AREA)
- Physics & Mathematics (AREA)
- Technology Law (AREA)
- Multimedia (AREA)
- Computer Hardware Design (AREA)
- Computer Security & Cryptography (AREA)
- General Engineering & Computer Science (AREA)
- Storage Device Security (AREA)
- Two-Way Televisions, Distribution Of Moving Picture Or The Like (AREA)
- Facsimile Transmission Control (AREA)
Abstract
The invention discloses a kind of encryption and decryption method and system, the encryption method includes establishing the array of pixels of picture to be encrypted；The array of pixels of the picture to be encrypted is divided into one or more grid arrays；Identical encryption information is added in the grid array, obtains encrypted array of pixels；According to encrypted array of pixels, encrypted picture is configured.It is stolen that picture can have not only been prevented using the encryption and decryption method, but also did not influenced picture presentation.
Description
Technical field
The invention belongs to picture process field, in particular to a kind of encryption and decryption method and system.
Background technique
With the promotion of intellectual property right consciousness, people increasingly pay attention to the copyright of the personal production, for example, shooting photo, draw
The image etc. of system.When picture is shown on common platform, author, which only desires to these pictures being shared with everybody, to be seen, but is had
People do not obtain author authorization in the case where illegal download, usurp these pictures, speculate.
The method for preventing picture stolen existing at present mainly adds watermark to picture, but watermark not only influences beauty
Sight is also easily removed, and if when a part that others only cuts picture carries out in use, having no idea to prove picture
All rights reserved.
Summary of the invention
The technical problem to be solved in the present invention is that having overcome the deficiencies of the prior art and provide a kind of encryption and decryption method
And system, it is stolen that the encryption and decryption method can not only prevent picture, but also does not influence picture presentation.
In view of this, the purpose of the present invention is to provide a kind of encryption methods, using following technical scheme: a kind of encryption side
Method, the encryption method include,
Establish the array of pixels of picture to be encrypted；
The array of pixels of the picture to be encrypted is divided into one or more grid arrays；
Identical encryption information is added in the grid array, obtains encrypted array of pixels；
According to encrypted array of pixels, encrypted picture is configured.
Further, the encryption method further includes predetermined encryption information and encryption rule, wherein
The encryption information includes one or combination in head key, encryption key and tail portion key；
The encryption rule include Encryption Algorithm, encryption key addition manner, one in encryption information processing mode or
It is multiple.
Further, the Encryption Algorithm includes at least,
Encryption element in the head key, encryption key or tail portion key is added to pixel array to be encrypted,
Enable front three element in encrypted pixel array and value units numerical value equal with encryption element.
Further, the encryption key addition manner includes at least,
Determine first encryption element first position in grid array to be encrypted in encryption key；
Encryption element since first position, in the grid array addition encryption key to be encrypted.
Further, the encryption information processing mode includes at least,
Determine the encrypted characters string of head key, encryption key or tail portion key；
The encrypted characters string of head key, encryption key or tail portion key is switched into number according to preset rules；
The number is switched to encrypt array.
Further, the preset rules, which are included at least, switchs to number for encrypted characters string by dictionary table.
Further, the array of pixels includes line number group, and the pixel array formed with four numbers is the pixel
The minimum unit of array.
Further, the step of array of pixels by the picture to be encrypted is divided into one or more grid arrays packet
It includes,
Obtain encryption information；
According to the encryption information, it is determined to that the height and the width of the unit grids array of the encryption information are added；
According to the unit grids array height and the width, the picture pixels array to be encrypted is divided into one or more
A grid array.
Further, the encryption method further includes,
The height of the grid array or width are not equal to the unit grids array height or width if it exists, to described
Grid array adds blank pixel point array.
Further, identical encryption information is added in the grid array, obtains the step of encrypted array of pixels
Suddenly include,
Determine head key, encryption key and the tail portion key in the encryption information；
Head position is reserved from the grid array, and head key is added in head position；
Using the head position as reference point, encryption key is added in the grid array；
Tail position is determined in the grid array, and tail portion key is added in tail position.
Further, the encryption method further includes removal blank pixel point array:
According to the width and height of picture to be encrypted, the length of pixel array set in line number group in array of pixels is enabled after encryption
Equal to the width of picture to be encrypted, the length of the pixel array set of array of pixels in a column direction after encrypting is enabled to be equal to be encrypted
The height of picture；
Interception width and the high array of pixels in picture to be encrypted, to remove blank pixel point array.
Another object of the present invention, which also resides in, provides a kind of decryption method, and the decryption method includes,
Establish the array of pixels to be decrypted of picture to be decrypted；
The head position and/or tail position in array of pixels to be decrypted are obtained, and according to head position and/or tail portion position
It sets, determines unit grids array；
According to head position and/or tail position, encryption key is extracted in the unit grids array；
The encryption key that will acquire is compared with predetermined encryption key.
Further, the decryption method further includes,
Extract the units numerical value of pixel array front three element and value all in the array of pixels to be decrypted；
The units numerical value of the default head position and/or default tail position that extract simultaneously is handled, and is obtained wait solve
The head key and/or tail portion key of close picture；
The head key and/or tail portion key that will acquire are compared with default head key and/or tail portion key, are determined
Head position and/or tail position, and determine unit grids array.
Another object of the present invention, which also resides in, provides a kind of encryption system, and the encryption system includes,
Array of pixels establishes module, for establishing the array of pixels of picture to be encrypted；
Array of pixels processing module, for the array of pixels of the picture to be encrypted to be divided into one or more grid numbers
Group；
Encrypting module obtains encrypted pixel number for identical encryption information to be added in the grid array
Group；
Configuration module, for configuring encrypted picture according to encrypted array of pixels.
Further, the encryption system further includes,
Presetting module is used for predetermined encryption information and encryption rule.
Another object of the present invention, which also resides in, provides a kind of decryption system, and the decryption system includes,
Array of pixels establishes module, for establishing the array of pixels to be decrypted of picture to be decrypted；
Module is obtained, for identification the head position and/or tail position in array of pixels to be decrypted, and according to head position
It sets and/or tail position, determines unit grids array；
Extraction module, for it is close to extract encryption in the unit grids array according to head position and/or tail position
Key；
Comparison module, the encryption key for will acquire are compared with predetermined encryption key.
Another object of the present invention, which also resides in, provides a kind of encryption system, the system comprises at least one processor and
At least one processor；
The memory storage executes the computer program of encryption method described above, and the processor calls in memory
The computer program to execute encryption method described above.
Another object of the present invention, which also resides in, provides a kind of decryption system, the system comprises at least one processor and
At least one processor；
The memory storage executes the computer program of decryption method described above, and the processor calls in memory
The computer program to execute decryption method described above.
Encryption and decryption method of the invention makes the encryption information of picture to be encrypted be evenly distributed on picture, and perfect
Encryption rule makes the encryption information that picture is added not will lead to picture distortion to be encrypted, to not influence the exhibition of encryption picture still
Show, further, is cut even if having encrypted picture, encryption information can still be decrypted according to part picture, thus of the invention
Encryption and decryption method can be effectively prevented picture and be stolen, and improve the safety that picture uses.
Other features and advantages of the present invention will be illustrated in the following description, also, partly becomes from specification
It obtains it is clear that understand through the implementation of the invention.The objectives and other advantages of the invention can be by specification, right
Pointed structure is achieved and obtained in claim and attached drawing.
Detailed description of the invention
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below
There is attached drawing needed in technical description to be briefly described, it should be apparent that, the accompanying drawings in the following description is this hair
Bright some embodiments for those of ordinary skill in the art without creative efforts, can be with root
Other attached drawings are obtained according to these attached drawings.
Fig. 1 shows one of embodiment of the present invention encryption method flow diagram；
Fig. 2 shows one of embodiment of the present invention grid array schematic diagrames；
Fig. 3 shows the array of pixels schematic diagram that one of embodiment of the present invention is divided into grid；
Fig. 4 shows one of embodiment of the present invention and illustrates by the encryption information process flow of encryption information of character string
Figure；
Fig. 5 shows encryption information arrangement schematic diagram in one of embodiment of the present invention grid array to be encrypted；
Fig. 6 shows one of embodiment of the present invention decryption method flow diagram；
Fig. 7 shows the structural schematic diagram of one of embodiment of the present invention encryption system；
Fig. 8 shows the structural schematic diagram of one of embodiment of the present invention decryption system；
Fig. 9 shows the structural schematic diagram of another encryption system in the embodiment of the present invention；
Figure 10 shows the structural schematic diagram of another decryption system in the embodiment of the present invention.
Specific embodiment
In order to make the object, technical scheme and advantages of the embodiment of the invention clearer, below in conjunction with the embodiment of the present invention
In attached drawing, technical solution in the embodiment of the present invention clearly and completely illustrated, it is clear that described embodiment is
A part of the embodiment of the present invention, instead of all the embodiments.Based on the embodiments of the present invention, those of ordinary skill in the art
Every other embodiment obtained without making creative work, shall fall within the protection scope of the present invention.
As shown in Figure 1, a kind of encryption method is described in the embodiment of the present invention, firstly, establishing the pixel of picture to be encrypted
Array, secondly, the array of pixels of the picture to be encrypted is divided into one or more grid arrays, then, in the grid
Identical encryption information is added in array, obtains encrypted array of pixels, finally, being matched according to encrypted array of pixels
Set encrypted picture.To achieve the purpose that prevent picture stolen to image ciphering.
Specifically, a picture has a large amount of Pixel Information, a pixel includes RGB color value and Alpha transparency
Value (also makees channel value), wherein the RGB represents Red (red) Green (green) Blue (blue), and R parameter value, G parameter
The range of value, B parameter value and Alpha transparence value is 0 to 255, so that the Pixel Information of a picture is by very much
Number composition, therefore, the Pixel Information of a picture is considered as the one-dimension array being made of many numbers；It is to be added to establish
One pixel is considered as being made of RGB color value and four numbers of Alpha transparence value by the array of pixels of close picture
One-dimension array, so that the original pixels array of the picture to be encrypted is using the one-dimension array of a pixel as the two dimension of unit
Array, while and record the height and width of the picture to be encrypted, further, the pixel array further includes one or more
The line number group being made of pixel array.Preferably, the one-dimension array of a pixel is denoted as pixel array.Further
Ground according to encryption information is determined to that the height and the width of the unit grids array of the encryption information are added；Further according to described
The picture pixels array to be encrypted is divided into one or more grid arrays by unit grids array height and the width.It is described
Pixel array in grid array is a part of the picture pixels array to be encrypted.As illustratively shown in Fig. 2
The data format of grid array, as can be known from Fig. 2, the grid array are that the pixel array of every row forms the row of grid array
Array shows only the one part of pixel point array in grid array in Fig. 2.Preferably, the picture to be encrypted can be seen as
The two-dimensional array of one or more grid array compositions, and to the grid array for meeting grid when encrypting picture progress grid division
In have sufficient amount pixel array satisfaction all encryption information can be added, to should consider simultaneously in grid division
The length of encryption information and the size of original pixels array.
The encryption method further includes addition blank pixel point array, according to the unit grids array height and width
Degree, during the picture pixels array to be encrypted is divided into one or more grid arrays, as shown in figure 3, will encryption
Picture is divided into multiple grids, in Fig. 3 all grids with unit grids X height and width having the same, but by picture point
At there are the pictures to be encrypted to be unsatisfactory for the case where dividing all grids equally when identical grid, then need by adding blank picture
Vegetarian refreshments array makes the grid that picture to be encrypted is bisected into identical height and width, in Fig. 3, original a height of H of the encryption picture,
Width is W, but when dividing grid equally, Partial Mesh is imperfect, so that being added to partial blank pixel array makes picture to be encrypted
The grid of division is all the same.The purpose of addition blank pixel point array is when avoiding that encryption information is written in each grid
Grid array is imperfect to lead to write error.Preferably, the picture in grid array that the array of pixels of picture to be encrypted is divided into
Vegetarian refreshments array sum is identical as pixel array sum in unit grids array.It is further preferred that when equal part grid, if it exists
When cannot divide grid equally, blank pixel points can also be added according to the pixel array sum in unit grids array
Group.
The encryption method further includes predetermined encryption information and encryption rule, wherein the encryption information includes that head is close
One in key, encryption key and tail portion key or combination；The encryption rule includes Encryption Algorithm, encryption key addition side
One or more of formula, encryption information processing mode.Specifically, head key, encryption key in the encryption information or
Tail portion key is usually the encrypted characters string being made of multiple characters, then needs encrypted characters string according to preset encryption information
Processing mode is handled, and the encryption information processing mode, which can be, is converted to corresponding number for encrypted characters string, then will
Number is converted to encryption array, then the final encryption element using in encryption array encrypts grid array.Specifically, such as
Shown in Fig. 4, using encryption key be character string 123abc and preset rules use dictionary table as exemplary illustration, first in Fig. 4
It first needs encrypted characters string 123abc being converted to corresponding number, encrypted characters string is converted to according to dictionary table by corresponding number
Word are as follows: 010203101112, then further, number is converted into encryption array, the encryption array be [0,1,0,2,0,3,
1,0,1,1,1,2], so that the element in the encryption array is all encryption elements.Preferably, the encryption information can be with
It is the combination of one or more encryption elements in user's choosing.
Further specifically, being added head key, encryption key or the tail portion key in the encryption information to described
Identical Encryption Algorithm can be used when in grid array, the Encryption Algorithm includes at least the head key, encryption key
Or the encryption element in the key of tail portion is added to pixel array to be encrypted, enables first three bit in encrypted pixel array
Element and value units numerical value is equal with encryption element.Specific Encryption Algorithm step can be with are as follows: firstly, determination will encrypt picture
Vegetarian refreshments array and encryption element；Secondly, first three element carries out add operation in the encrypted pixel point array, front three is obtained
Then the encryption element and the units numerical value are subtracted each other, obtain difference between the two by the units numerical value of element and value
Value；Finally, by the difference according to addition rule and one or more progress in front three element in the pixel array
Operation show that encrypted pixel array, the encrypted pixel array meet front three element and are added, obtained
And value units numerical value be equal to encryption element.Wherein, the difference is transported with the front three element in pixel array
When calculation, the operation result of the either element in the front three element still needs to meet within 0-255, therefore, by the difference
According to addition rule and one or more progress operations in front three element in the pixel array, encrypted picture is obtained
The step of vegetarian refreshments array, further includes, if there are elements less than 0 in encrypted pixel array, then by the element less than 0
When carrying out being greater than 255 there are element in add operation or encrypted pixel array with 10, then it will be greater than 255 element again
Subtraction is carried out with 10.Preferably, the Encryption Algorithm is not limited to only enable front three element in encrypted pixel array
And value units numerical value with encryption element it is equal, be also possible to the either element in pixel array in front three element
After units numerical value is equal with encryption element or encryption in pixel array nibble element and value units numerical value with plus
Situations such as close element is equal.
Further specifically, the addition rule to the difference illustrates, it is integrated into including at least by difference
Tool there are three the array form of element, herein difference only one, to be integrated into tool using 0 numerical value and difference, there are three elements
One-dimension array；Such as difference is 4, then can be integrated into [4,0,0], but be not limited to [4,0,0], can also [0,4,0] etc., so
It is added respectively with the front three element in pixel array again afterwards, obtains encrypted pixel array, such as pixel
Array is [21,31,65,255], then array after being added is [25,31,65,255].Further, in the Encryption Algorithm
Addition rule, which can also be, splits the difference, i.e., difference is split as one or more addition element；Then it will tear open
The addition digital convergence divided is that there are three the one-dimension arrays of element for tool；Because of the addition number after splitting and need and picture to be encrypted
The front three element of vegetarian refreshments array is added, and when the difference is split, the element after fractionation is up to 3.Preferably,
The numerical difference is divided equally as far as possible, can not only guarantee the quality of picture, but also does not influence the displaying of picture.Preferably, described to add
Close algorithm has nonuniqueness, but first three bit digital for meeting encrypted pixel array is added the result units value obtained
Equal to encryption number.
With pixel array be [23,34,45,255], encryption element is 6 to illustrate, firstly, pixel number
The front three element of group carries out phase added elements, and units numerical value obtain and value is 2；Secondly, by the encryption element and institute
State units numerical value to subtract each other, show that difference between the two is 4, then need by 4 be added to pixel array [23,34,45,
255] it in the front three element in, then, to be divided into exemplary illustration using to numerical difference progress is third, then 4 can tear open
It is divided into 2,1,1；Be again [2,1,1] by 2,1,1 composition addition arrays, finally attach element in addend group [2,1,1] respectively with
Front three element in pixel array is added, and show that encrypted pixel array is [25,35,46,255].It is preferred that
Ground, 2,1,1 three bit elements composition add array when be not limited to [2,1,1], the sequence of three bits element be also possible to [1,2,1],
[1,1,2] etc..Therefore, the addition array has nonuniqueness.
Similarly, be [1,23,3,255] with pixel array, encryption element is 1 to illustrate, firstly, pixel
The front three element of array carries out phase added elements, and units numerical value obtain and value is 7；Secondly, by the encryption element with
The units numerical value subtracts each other, and show that difference between the two is -6, then need by -6 be added to pixel array [1,23,3,
It 255], then, then -6 can be divided into exemplary illustration using carrying out trisection to the numerical difference in the front three element in
To be split as -2, -2, -2；Again will -2, -2, -2 composition addition arrays be [- 2, -2, -2], finally attach addend group [- 2, -2, -
2] element in is added with the front three element in pixel array respectively, obtain encrypted pixel array be [- 1,
21,1,255].There are elements -1 for the encrypted pixel array less than 0, then carries out add operations for -1 and 10, final to add
Pixel array after close is [9,21,1,255].When there is the case where being greater than 255 in the element after the encryption in pixel array,
The element and 10 that then will be greater than 255 carry out subtraction, and specifically no longer citing repeats.
The trisection fractionation of the difference, which can be, first divides exactly difference with 3, and records decile value and residual value, secondly, will
Residual value is divided exactly with 2, and records decile value and residual value, is then divided exactly the residual value after dividing exactly with 2 with 1, and record decile value；Finally
By the corresponding addition of decile value three times, three addition element are obtained, by taking difference 4 as an example, are then first divided exactly with 3, obtaining decile value is
1, residual value 1, the then addition element after dividing exactly with 3 is 1,1,1；Then continue that residual value and 2 are divided exactly to obtain decile value to be 0, residual value
It is addition element after 1, then residual value and 2 are divided exactly is 0,0,0；Then, continue to divide exactly the residual value after dividing exactly with 2 and 1
Decile value is 1, and residual value is 0 (can not again equal part), then the addition element after dividing exactly with 1 is 1,0,0；The then addition after operation three times
Element carries out adding up to 2,1,1, so that last addition array is [2,1,1], in short, the addition array does not have uniquely
Property.Preferably, the algorithm for pixel array being added in the difference is not unique.
The addition rule of the difference is a part in Encryption Algorithm, so that above-mentioned example explanation is also to calculate encryption
Method carries out exemplary partial explanation.
Further specifically, identical encryption letter is added in all grid arrays that picture to be encrypted etc. point obtains
Breath, during obtaining encrypted grid array, need to mark off head position, encrypted location and tail from the grid array
Portion position, firstly, reserving head position in the grid array of the grid, and close for head to be added in the head position
Key.Wherein, the head position occupies one or more pixel arrays, and one or more of pixel arrays can be
It is continuous and/or discontinuous.Therefore, the head key can be the encryption number that one or more encryption elements are composed
Group.Preferably, the head position at least occupies 9 pixel arrays.It is illustrated with Fig. 5, the head position
Positioned at the upper left corner of the grid array, the pixel array that the head position occupies is 9, and the arrangement used for
Since the pixel array of first, the upper left corner of unit grids, first three pixel number of first three rows line number group is successively occupied
Group, wherein the encryption array that the head key uses is [1,2,3,4,5,6,7,8,9], then respectively by encrypt in array 9
Head position is added in a encryption element.The arrangement of the head position and the head key be not unique, can be according to institute
The length for stating head key determines the position of pixel array and pixel array that the head position accounts for, can also root
The length of head key is determined according to head position.But head position and/or head key can not be too simple, such as head
Position only takes up 4 pixel arrays, then head key is only there are four element is encrypted, then there may be encrypted to have 4 in picture
The neighbor pixel array of a unencryption decryption when, the content extracted is identical as head key, thus head position and/or
Head key is too simple, so that head position is difficult to determining probability and increases, then influences closed quality, brings to decryption tired
It is difficult.
Secondly, encryption key is added according to encryption key addition manner using head position as reference point in grid array,
Specifically: determine first encryption element first position in grid array to be encrypted in encryption key, since first position,
The encryption element in encryption key is successively added in the grid array to be encrypted, further specifically, the encryption key
Addition manner do not limit to a kind of mode, can be use the encryption key addition manner with from first encryption element
Encrypted location starts, and adds an encryption element every n pixel array in the line number group of the grid array, and in institute
Stating in grid array is successively encrypted every n every trade array, wherein n >=0.Using Fig. 5 as exemplary illustration, first in Fig. 5
The position of a encryption element is first pixel array after the head position the first row of the grid array.In Fig. 5
Encryption key uses character string 123abc, then encrypting array is [0,1,0,2,0,3,1,0,1,1,1,2], thus the encryption number
Element in group is successively according to since first encrypts the position of element, every two in the line number group of the grid array
Pixel array adds an encryption element, and in the grid array be every two every trade arrays to the grid array into
Row encryption.Since grid array limitation exposition encrypts element in Fig. 5.The encryption key addition manner makes picture neither
Distortion also plays and prevents picture stolen.Preferably, the line number group of the grid array is regarded as X-axis, the grid
The columns group of array regards Y-axis as, then the addition manner of the encryption key is the X-axis since first encrypts the position of element
It is to add an encryption element every n pixel, Y-axis is successively encrypted every n every trade array, wherein n >=0.
Finally, determining tail position in the grid array, and add in tail position after encryption key addition
Enter tail portion key, it is preferable that the tail portion key is after the encryption key, using the end as the encryption key
Mark, and when tail portion key is added, the addition manner according to the encryption key is added.Therefore tail portion key is added
The tail position of pixel array composition grid array.Further, the tail position can be one or more pixels
Array, the tail portion key can be one or more encryption elements, wherein can be the tail position and determine the tail portion
The length of key is also possible to pixel array number and its arrangement that the tail portion key determines that the tail position occupies
Mode.Using Fig. 5 as exemplary illustration, the tail portion key is using character string " & ", and the character string " & " is in dictionary table
Corresponding number is " 56 ", then the tail portion key array is [5,6], and the cipher mode used is from first encryption element
Position start, add an encryption elements every two pixel arrays in the line number group of the grid array, and in institute
State in grid array is successively encrypted every two every trade arrays.Preferably, to the grid array encrypted when
It waits, the tail portion key as end mark is added in the encryption key, then it is when adding encryption key, the encryption is close
Key and tail portion key sequentially add in grid, for example, encryption key uses the character string 123abc& of tail key, wherein tail
Portion's key is &.It is further preferred that the tail position addition manner is not limited to the addition manner using encryption key, it can also
To be in the last one or the multiple pixel arrays for being directly added into the grid array, but the tail position one is positioned at institute
It states in the pixel array in encryption key after pixel array shared by the last one encryption element.
In the present embodiment, the encryption method further includes removal blank pixel point array, i.e., will add in above-mentioned encryption method
The blank pixel point array added is removed from encrypted picture, firstly, enabling encryption according to the width and height of original image to be encrypted
The length of pixel array set is equal to the width of original image to be encrypted in line number group in array of pixels afterwards, enables pixel number after encryption
The length of group pixel array set in a column direction is equal to the height of original image to be encrypted, finally, finally intercept out it is wide and
The high array of pixels in original image to be encrypted eliminates extra blank pixel point array.With Fig. 3 for exemplary theory
Bright, after the original image addition blank pixel point array to be encrypted, the high H and width W of the original image to be encrypted are had occurred
Change, then after the completion of the original image to be encrypted encryption, each grid joined identical head key, encryption key with
And tail portion key, then the array of pixels after the image ciphering to be encrypted is an encrypted new two-dimensional array, then enables encryption
Array of pixels afterwards is equal to the width of original image to be encrypted, and all pixels point in the Y-axis direction in the length of X-axis uplink array
The length of the set of array is equal to the height of original image to be encrypted, is then intercepted again, that is, removes extra blank pixel point
Array.
As shown in fig. 6, describing a kind of decryption method in the embodiment of the present invention, the decryption method includes, firstly, establishing
The array of pixels to be decrypted of picture to be decrypted, secondly, traversal it is described decryption picture array of pixels to be decrypted, search and obtain to
The head position and/or tail position in array of pixels are decrypted, and any unit is determined according to head position and/or tail position
Grid array；Then, according to head position or tail position, the encryption element in the unit grids array is parsed；Finally,
Calculated encryption element is switched into encryption key, and is compared with predetermined encryption key, if the two is consistent, decrypts picture
For our original picture, to achieve the purpose that anti-theft picture.Specifically, the original image prime number for establishing decryption picture
Group is identical as principle and/or method that the above-mentioned array of pixels for establishing picture to be encrypted uses, herein without repeating.Work as traversal
When the array of pixels of the picture to be decrypted, firstly, head position and/or tail position are reversely searched using Encryption Algorithm, from
And determine a unit grids array, specifically, extract pixel array all in the array of pixels to be decrypted first three
The units numerical value of bit element and value；The units numerical value of the default head position and/or default tail position that extract is gone forward side by side
Row processing, obtains the head key and/or tail portion key of picture to be decrypted；The head key and/or tail portion key that will acquire with
Default head key and/or default tail portion key are compared, and determine one or more head position and/or tail position, and
Determine one or more unit grids array.After determining one or more unit grids arrays, choose one of those or
Multiple unit grids arrays with head position or tail position are reference in the one or more unit grids arrays selected
Point reversely extracts the units numerical value of the respective pixel point array according to encryption key addition manner, then will extract
Then encryption array is reversely switched to encrypt close by all units numerical value composition encryption arrays according to encryption information processing mode
Key, the encryption key that finally will acquire are compared with predetermined encryption key.
Decrypting process is illustrated by taking Fig. 5 as an example, as shown in Figure 5, the encryption information of the picture with Fig. 5 grid array
And encryption rule are as follows: head position uses the arrangement of 3x3 in the upper left corner of grid, and key corresponding array in head is
[1,2,3,4,5,6,7,8,9]；The encryption key be character string 123abc, then corresponding encryption array for [0,1,0,2,0,
3,1,0,1,1,1,2], and first of encryption key for grid array the first row head position after first pixel
Array；The tail position is " ", corresponds to tail portion key array as [5,6], and the addition manner of tail portion key and encryption key
It is identical.It, then can be with when traversing the original pixels array of the picture when to which the picture with Fig. 5 grid being decrypted
The units numerical value of picture to be decrypted all pixel array front threes and value is obtained, with first three rows line number group in Fig. 5 grid
All pixels point array and value units value for, then be 1,2,3,0,2,2,1,2,2,0；4,5,6,2,2,2,2,2,2,
2；7,8,9,2,2,2,2,2,2,2；So that the units numerical value for obtaining the pixel array of the position 3x3 in the grid upper left corner is 1,
2,3,4,5,6,7,8,9, then meet the head position and head key of encryption rule described above, it is determined that go out head position,
The acquisition modes of similar tail position will not be described in great detail.When taking the available one or more head positions of a picture
And/or tail position is chosen described in the extraction of any unit grid array so as to obtain one or more unit grids arrays
Element is encrypted, during the extraction process, then extracting rule is consistent with encryption rule, after head position determines in Fig. 5, that is, determines list
Position grid array, according to encryption key addition manner reversely from first after the grid array the first row head position
Pixel array starts, every two pixel arrays in the line number group of the grid array, and in the grid array
It is successively to extract units numerical value every two every trade arrays, completes all encryption elements until extracting, and/or extract tail portion
Terminate to extract after the encryption element of key, then, by the encryption element composition encryption array of all encryption keys extracted, so
Afterwards, encryption key is converted according to encryption rule by encryption array, so that by the encryption key decrypted and adding for picture be added
Key is compared, specifically, all encryption numbers to be finally translated into the processing mode of encryption key in decrypting process
With in ciphering process handle encryption key process be inverse process, in Fig. 5, will encryption array be [0,1,0,2,0,3,1,
0,1,1,1,2] switch to number 010203101112, it is character string that number, which is further switched to encryption key, according to dictionary table
123abc。
In the present embodiment, the encryption information can be carried out with encryption rule it is customized, but one encryption picture plus
Confidential information and encryption rule have uniqueness, and the decryption method is also to uniquely determine according to encryption information and encryption rule,
After being encrypted to picture, even if picture is cut into sub-fraction, we are still it can be concluded that encrypted characters string, reaches
Prevent stolen purpose.
In the present embodiment, the array of pixels of picture is also considered as the one-dimension array being made of tri- color values of RGB, then and one
The encryption and decryption method of picture and method described above similarly, are then no longer repeated.
Based on the above method, a kind of encryption system is provided to being also adapted to property of the embodiment of the present invention, such as Fig. 7 institute
Show, the encryption system successively includes realizing that the array of pixels of data connection establishes module, array of pixels processing module, encryption mould
Block, configuration module, wherein the array of pixels establishes module for establishing the array of pixels of picture to be encrypted；The array of pixels
Processing module is used to the array of pixels of the picture to be encrypted being divided into one or more grid arrays；The encrypting module is used
In identical encryption information is added in the grid array, encrypted array of pixels is obtained；The configuration module is used for
According to encrypted array of pixels, encrypted picture is configured.Specifically, the array of pixels establish module be also used to so as to
Encrypted pixel array includes line number group, and take the pixel array that four numbers form as the minimum unit of the array of pixels；
The unit grids that the array of pixels processing module is also used to be determined to that the encryption information is added according to the encryption information
The height and the width of array, and it is also used to add blank pixel point array；The encrypting module is also used to determine the encryption letter
Head key, encryption key and tail portion key in breath, and picture to be encrypted is encrypted according to encryption rule；It is described to match
Set module be also used to remove encrypted the blank pixel point array that picture adds in ciphering process.
The encryption system further includes for predetermined encryption information and encryption rule presetting module.Specifically, described default
The preset encryption information of module includes one or combination in head key, encryption key and tail portion key；The encryption rule
Including one or more of Encryption Algorithm, encryption key addition manner, encryption information processing mode.
Based on the above method, a kind of encryption system is provided to being also adapted to property of the embodiment of the present invention, such as Fig. 8 institute
Show, the decryption system includes realizing that the array of pixels of data connection establishes module, obtains module, extraction module and compares mould
Block；Wherein, the array of pixels establishes module for establishing the array of pixels to be decrypted of picture to be decrypted；The acquisition module is used
Head position and/or tail position in identification array of pixels to be decrypted, and according to head position and/or tail position, really
Order position grid array；The extraction module is used for according to head position and/or tail position, in the unit grids array
Extract encryption key；
The encryption key that the comparison module is used to will acquire is compared with predetermined encryption key.
Based on the above method, a kind of encryption system is provided to being also adapted to property of the embodiment of the present invention, such as Fig. 9 institute
Show, the system comprises at least one processor and at least one processors；The memory storage executes described above add
The computer program of decryption method, the processor call the computer program in memory to execute encryption described above
Method.
Based on the above method, a kind of decryption system is provided to being also adapted to property of the embodiment of the present invention, such as Figure 10 institute
Show, the system comprises at least one processor and at least one processors；The memory storage executes solution described above
The computer program of decryption method, the processor call the computer program in memory to execute decryption described above
Method.
Although the present invention is described in detail referring to the foregoing embodiments, those skilled in the art should manage
Solution: it is still possible to modify the technical solutions described in the foregoing embodiments, or to part of technical characteristic into
Row equivalent replacement；And these are modified or replaceed, various embodiments of the present invention technology that it does not separate the essence of the corresponding technical solution
The spirit and scope of scheme.
Claims (18)
1. a kind of encryption method, it is characterised in that: the encryption method includes,
Establish the array of pixels of picture to be encrypted；
The array of pixels of the picture to be encrypted is divided into one or more grid arrays；
Identical encryption information is added in the grid array, obtains encrypted array of pixels；
According to encrypted array of pixels, encrypted picture is configured.
2. encryption method according to claim 1, it is characterised in that: the encryption method further include predetermined encryption information with
Encryption rule, wherein
The encryption information includes one or combination in head key, encryption key and tail portion key；
The encryption rule includes one or more of Encryption Algorithm, encryption key addition manner, encryption information processing mode.
3. encryption method according to claim 2, it is characterised in that: the Encryption Algorithm includes at least,
Encryption element in the head key, encryption key or tail portion key is added to pixel array to be encrypted, enables and adding
In pixel array after close front three element and value units numerical value with encryption element it is equal.
4. encryption method according to claim 2, it is characterised in that: the encryption key addition manner includes at least,
Determine first encryption element first position in grid array to be encrypted in encryption key；
Encryption element since first position, in the grid array addition encryption key to be encrypted.
5. encryption method according to claim 2, it is characterised in that: the encryption information processing mode includes at least,
Determine the encrypted characters string of head key, encryption key or tail portion key；
The encrypted characters string of head key, encryption key or tail portion key is switched into number according to preset rules；
The number is switched to encrypt array.
6. encryption method according to claim 5, it is characterised in that: the preset rules are included at least will by dictionary table
Encrypted characters string switchs to number.
7. -6 any encryption method according to claim 1, it is characterised in that: the array of pixels includes line number group, and
It take the pixel array that four numbers form as the minimum unit of the array of pixels.
8. encryption method according to claim 1, it is characterised in that: the array of pixels etc. by the picture to be encrypted
The step of being divided into one or more grid arrays include,
Obtain encryption information；
According to the encryption information, it is determined to that the height and the width of the unit grids array of the encryption information are added；
According to the height and the width of the unit grids array, the picture pixels array to be encrypted is divided into one or more
Grid array.
9. encryption method according to claim 1 or 8, it is characterised in that: the encryption method further includes,
The height of the grid array or width are not equal to the height or width of the unit grids array if it exists, to the net
Lattice array adds blank pixel point array.
10. encryption method according to claim 1, it is characterised in that: identical add is added in the grid array
Confidential information, the step of obtaining encrypted array of pixels include,
Determine head key, encryption key and the tail portion key in the encryption information；
Head position is reserved from the grid array, and head key is added in head position；
Using the head position as reference point, encryption key is added in the grid array；
Tail position is determined in the grid array, and tail portion key is added in tail position.
11. encryption method according to claim 9, it is characterised in that: the encryption method further includes removal blank pixel
Point array:
According to the width and height of picture to be encrypted, the length of pixel array set is equal in line number group in array of pixels after order encryption
The width of picture to be encrypted enables the length of the pixel array set of array of pixels in a column direction after encrypting be equal to picture to be encrypted
Height；
Interception width and the high array of pixels in picture to be encrypted, to remove blank pixel point array.
12. a kind of decryption method, it is characterised in that: the decryption method includes,
Establish the array of pixels to be decrypted of picture to be decrypted；
Obtain the head position and/or tail position in array of pixels to be decrypted, and according to head position and/or tail position,
Determine unit grids array；
According to head position and/or tail position, encryption key is extracted in the unit grids array；
The encryption key that will acquire is compared with predetermined encryption key.
13. decryption method according to claim 12, it is characterised in that: the decryption method further includes,
Extract the units numerical value of pixel array front three element and value all in the array of pixels to be decrypted；
The units numerical value of the default head position and/or default tail position that extract simultaneously is handled, and figure to be decrypted is obtained
The head key and/or tail portion key of piece；
The head key and/or tail portion key that will acquire are compared with default head key and/or tail portion key, determine head
Position and/or tail position, and determine unit grids array.
14. a kind of encryption system, it is characterised in that: the encryption system includes,
Array of pixels establishes module, for establishing the array of pixels of picture to be encrypted；
Array of pixels processing module, for the array of pixels of the picture to be encrypted to be divided into one or more grid arrays；
Encrypting module obtains encrypted array of pixels for identical encryption information to be added in the grid array；
Configuration module, for configuring encrypted picture according to encrypted array of pixels.
15. encryption system according to claim 14, it is characterised in that: the encryption system further includes,
Presetting module is used for predetermined encryption information and encryption rule.
16. a kind of decryption system, it is characterised in that: the decryption system includes,
Array of pixels establishes module, for establishing the array of pixels to be decrypted of picture to be decrypted；
Module is obtained, for identification the head position and/or tail position in array of pixels to be decrypted, and according to head position
And/or tail position, determine unit grids array；
Extraction module, for extracting encryption key in the unit grids array according to head position and/or tail position；
Comparison module, the encryption key for will acquire are compared with predetermined encryption key.
17. a kind of encryption system, it is characterised in that: the system comprises at least one processor and at least one processors；
The memory storage perform claim requires the computer program of any the method for 1-11, and the processor calls storage
The computer program in device requires any method of 1-11 with perform claim.
18. a kind of decryption system, it is characterised in that: the system comprises at least one processor and at least one processors；
The memory storage perform claim requires the computer program of any the method for 12-13, and the processor calling is deposited
The computer program in reservoir requires any method of 12-13 with perform claim.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810982109.8A CN109068021B (en) | 2018-08-27 | 2018-08-27 | Encryption and decryption method and system |
| CN201911102778.2A CN111192187B (en) | 2018-08-27 | 2018-08-27 | Decryption method and system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810982109.8A CN109068021B (en) | 2018-08-27 | 2018-08-27 | Encryption and decryption method and system |
Related Child Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911102778.2A Division CN111192187B (en) | 2018-08-27 | 2018-08-27 | Decryption method and system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109068021A true CN109068021A (en) | 2018-12-21 |
| CN109068021B CN109068021B (en) | 2020-02-14 |
Family
ID=64756191
Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810982109.8A Active CN109068021B (en) | 2018-08-27 | 2018-08-27 | Encryption and decryption method and system |
| CN201911102778.2A Active CN111192187B (en) | 2018-08-27 | 2018-08-27 | Decryption method and system |
Family Applications After (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911102778.2A Active CN111192187B (en) | 2018-08-27 | 2018-08-27 | Decryption method and system |
Country Status (1)
| Country | Link |
|---|---|
| CN (2) | CN109068021B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112437205A (en) * | 2020-11-18 | 2021-03-02 | 光谷技术有限公司 | Video encryption method and device |
| CN113282911A (en) * | 2021-05-12 | 2021-08-20 | 捷德(中国)科技有限公司 | Identity authentication method, device, equipment and computer storage medium |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111815723B (en) * | 2020-07-08 | 2024-04-12 | 北京华云安信息技术有限公司 | Data encryption method and device |
| CN113297613A (en) * | 2021-05-12 | 2021-08-24 | 捷德(中国)科技有限公司 | Key access method, key processing device, key processing equipment and computer storage medium |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2009232129A (en) * | 2008-03-21 | 2009-10-08 | Fujitsu Ltd | Image processing apparatus, image processing method, and image processing program |
| CN101656818A (en) * | 2008-08-18 | 2010-02-24 | 富士通株式会社 | Document data encryption method and document data encryption system |
| CN105488426A (en) * | 2015-11-30 | 2016-04-13 | 西安闻泰电子科技有限公司 | Mobile platform image encryption method |
| JP2017135530A (en) * | 2016-01-27 | 2017-08-03 | セイコーエプソン株式会社 | Image scanner and image scanning system |
| CN107154851A (en) * | 2017-06-30 | 2017-09-12 | 上海众人网络安全技术有限公司 | A kind of method and device of data encryption and decryption |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2404487A (en) * | 2003-07-31 | 2005-02-02 | Sony Uk Ltd | Access control for digital storage medium content |
| JP5321217B2 (en) * | 2009-04-21 | 2013-10-23 | 大日本印刷株式会社 | File encryption system |
| CN102142074B (en) * | 2011-03-31 | 2013-04-10 | 东北大学 | Chaos based universal electronic file encryption and decryption method |
| CN107483193A (en) * | 2017-08-31 | 2017-12-15 | 郑州云海信息技术有限公司 | An encryption method, a decryption method, an encryption device and a decryption device |
-
2018
- 2018-08-27 CN CN201810982109.8A patent/CN109068021B/en active Active
- 2018-08-27 CN CN201911102778.2A patent/CN111192187B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2009232129A (en) * | 2008-03-21 | 2009-10-08 | Fujitsu Ltd | Image processing apparatus, image processing method, and image processing program |
| CN101656818A (en) * | 2008-08-18 | 2010-02-24 | 富士通株式会社 | Document data encryption method and document data encryption system |
| CN105488426A (en) * | 2015-11-30 | 2016-04-13 | 西安闻泰电子科技有限公司 | Mobile platform image encryption method |
| JP2017135530A (en) * | 2016-01-27 | 2017-08-03 | セイコーエプソン株式会社 | Image scanner and image scanning system |
| CN107154851A (en) * | 2017-06-30 | 2017-09-12 | 上海众人网络安全技术有限公司 | A kind of method and device of data encryption and decryption |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112437205A (en) * | 2020-11-18 | 2021-03-02 | 光谷技术有限公司 | Video encryption method and device |
| CN112437205B (en) * | 2020-11-18 | 2022-03-15 | 光谷技术有限公司 | Video encryption method and device |
| CN113282911A (en) * | 2021-05-12 | 2021-08-20 | 捷德(中国)科技有限公司 | Identity authentication method, device, equipment and computer storage medium |
Also Published As
| Publication number | Publication date |
|---|---|
| CN111192187B (en) | 2023-10-24 |
| CN109068021B (en) | 2020-02-14 |
| CN111192187A (en) | 2020-05-22 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN109068021A (en) | A kind of encryption and decryption method and system | |
| Shankar et al. | Optimal key based homomorphic encryption for color image security aid of ant lion optimization algorithm | |
| CN109767375A (en) | Method and system for image watermark embedding and tracing | |
| US20090046856A1 (en) | Methods and apparatus for encrypting, obfuscating and reconstructing datasets or objects | |
| CN104851070B (en) | A kind of image encryption and decryption method based on foreground and background separation | |
| CN103475463B (en) | Encryption implementation method and device | |
| WO2018006576A1 (en) | Method for protecting pdf document page-by-page | |
| AU2006303085A1 (en) | Methods and apparatus for encrypting, obfuscating and reconstructing datasets or objects | |
| US11455757B2 (en) | Method and apparatus for reconstruction of original images from modified images | |
| US20110307952A1 (en) | Electronic device with password generating function and method thereof | |
| CN106295403A (en) | A kind of data safety processing method based on hbase and system | |
| CN106875323B (en) | Information hiding method and device based on image encryption | |
| CN105872305B (en) | A kind of completely separable encryption area image reversible data concealing method | |
| CN107169911A (en) | A kind of image encryption method converted based on Arnold transformation | |
| Zaini | Image segmentation to secure lsb2 data steganography | |
| CN108174053A (en) | A Decrypted Region-Defined Image Encryption Method Based on Directed Area and Playing Card Mapping | |
| CN104700348B (en) | A kind of color image-adaptive encryption method based on high-order chaos system | |
| CN112508764B (en) | Encryption method for balancing image privacy and usability based on information embedding | |
| CN115001666A (en) | Image local encryption algorithm based on bit plane template XOR | |
| CN114465779A (en) | A reversible and separable ciphertext domain information hiding method and system | |
| Bhase et al. | An access control system using visual cryptography and steganography | |
| CN114329555A (en) | Video file encryption processing method and device, storage medium and equipment | |
| CN106846233A (en) | A kind of photo encryption method and encryption device | |
| WO2017064517A1 (en) | Messaging security | |
| CN110690968B (en) | An Image Encryption Method Based on Montgomery-RSA Algorithm |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |