CN106530206A - Image encryption and decryption methods and image encryption and decryption devices based on optical encryption and decryption technologies - Google Patents
Image encryption and decryption methods and image encryption and decryption devices based on optical encryption and decryption technologies Download PDFInfo
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Abstract
The invention discloses image encryption and decryption methods and image encryption and decryption devices based on optical encryption and decryption technologies. The image encryption method comprises that an image to be encrypted is converted into a binary sequence code; according to a preset sequence conversion rule, the binary sequence code is converted into a decimal sequence code; according to the sequence from the head bit to the tail bit in the decimal sequence code, the decimal sequence code is divided into fragments, and the capacity of each fragment is set to be lower than or equivalent to the maximal capacity of a two-dimensional (2D) code; and the fragments are converted into 2D codes corresponding to the fragments, the 2D codes are encrypted optically, and the encrypted 2D codes are restored to the image to be encrypted via optical decryption. The 2D codes serves as carriers of the image, and are encrypted optically, the image restored via optical decryption is prevented from interference of spot noises, and the decrypted image is clearer and more complete.
Description
Technical field
It is the invention belongs to optical encryption and decryption technology field more particularly to a kind of based on optical encryption and decryption technology
Image encryption and decryption method and device.
Background technology
Information encryption can be protected during transmission and storage to electronic information, prevent from being leaked to illegally make
User.Wherein optical encryption technology has the advantages that high concurrency, high speed and many encryption parameters, is expected in following encryption skill
Art field occupies one seat.For piece image, common optical encryption technology includes：Double random-phase encoding (DRPE,
Double Random Phase Encoding), based on fractional fourier transform (FFT, fractional Fourier
Transform double random-phase encoding), wavelength multiplexing encryption and the asymmetric encryption based on phase truncation etc..
But optical encryption technology of the prior art has one disadvantage in that：After by above-mentioned optical encryption technology,
The severe jamming that original image can be subject to speckle noise, and then the definition of the image for affecting to decrypt is decrypted again.
The content of the invention
The present invention provides a kind of image encryption and decryption method and device based on optical encryption and decryption technology, it is intended to solve
Certainly because the image decrypted by existing optical encryption technology is subject to the severe jamming of speckle noise, and then affect what is decrypted
The problem of the definition of image.
It is a kind of based on optical encryption and the image encryption method of decryption technology that the present invention is provided, including：By figure to be encrypted
As being converted into binary sequence code；According to preset conversion sequence rule, the binary sequence code is converted into into decimal scale sequence
Row code；According to the first order to last position in the decimal sequence code, the decimal sequence code is divided into into multiple fragments,
And the capacity of each fragment in the plurality of fragment is set respectively less than or equal to the maximum capacity of single Quick Response Code；By described
Section is converted into Quick Response Code corresponding with the fragment, and the Quick Response Code is carried out optical encryption, so that the Quick Response Code encrypted
The image to be encrypted is reduced to by visual decryption.
A kind of image decryption method based on optical encryption and decryption technology that the present invention is provided, including：By to be decrypted two
Dimension code carries out visual decryption, the Quick Response Code decrypted, and the Quick Response Code decrypted is converted to includes decimal scale
Digital fragment；According to fragment sequence number preset in the Quick Response Code decrypted, the fragment after conversion is arranged, with life
Into decimal sequence code；According to preset conversion sequence rule, the decimal sequence code is converted into into binary sequence code；And
Switched binary sequence code is reduced to into image.
It is a kind of based on optical encryption and the image encrypting apparatus of decryption technology that the present invention is provided, including：Modular converter is used
In image to be encrypted is converted into binary sequence code；The modular converter, is additionally operable to according to preset conversion sequence rule, will
The binary sequence code is converted into decimal sequence code；Division module is for according to the first to end in the decimal sequence code
The decimal sequence code is divided into multiple fragments, and arranges the capacity of each fragment in the plurality of fragment by the order of position
Respectively less than or equal to the maximum capacity of single Quick Response Code；The modular converter is additionally operable to be converted into and described the fragment
The corresponding Quick Response Code of section, and the Quick Response Code is carried out into optical encryption, so that the Quick Response Code encrypted is reduced by visual decryption
For the image to be encrypted.
It is a kind of based on optical encryption and the image decrypting device of decryption technology that the present invention is provided, including：Modular converter is used
In Quick Response Code to be decrypted is carried out visual decryption, the Quick Response Code decrypted, and the Quick Response Code decrypted is converted to
Include the fragment of decimal system number；Generation module is for according to fragment sequence number preset in the Quick Response Code decrypted, general
Fragment after conversion is arranged, to generate decimal sequence code；The modular converter is for according to preset conversion sequence rule
Then, the decimal sequence code is converted into into binary sequence code；Recovery module for by switched binary sequence code also
Originally it was image.
Image encryption and decryption method based on optical encryption and decryption technology and device that the present invention is provided, will be to be encrypted
Image is converted into binary sequence code, according to preset conversion sequence rule, the binary sequence code is converted into decimal scale sequence
The decimal sequence code, according to the first order to last position in the decimal sequence code, is divided into multiple fragments, and is set by row code
The capacity for putting each fragment in the plurality of fragment is respectively less than or equal to the maximum capacity of single Quick Response Code, converts the piece to
Quick Response Code corresponding with the fragment, and the Quick Response Code is carried out into optical encryption, so that the Quick Response Code encrypted passes through visual decryption
Be reduced to the image to be encrypted, Quick Response Code then carried out into optical encryption to the Quick Response Code as the carrier of image so, can in case
Only disturbed by speckle noise by the image that visual decryption is restored, and then the image for decrypting has been become apparent from
It is whole.
Description of the drawings
In order to be illustrated more clearly that the embodiment of the present invention or technical scheme of the prior art, below will be to embodiment or existing
Accompanying drawing to be used needed for having technology description is briefly described, it should be apparent that, drawings in the following description are only this
Some embodiments of invention.
Fig. 1 is the realization based on optical encryption and the image encryption method of decryption technology that first embodiment of the invention is provided
Schematic flow sheet；
Fig. 2 is the realization based on optical encryption and the image encryption method of decryption technology that second embodiment of the invention is provided
Schematic flow sheet；
Fig. 3 is the schematic diagram for being converted to Quick Response Code process by image；
Fig. 4 is the realization of the image decryption method based on optical encryption and decryption technology that third embodiment of the invention is provided
Schematic flow sheet；
Fig. 5 is the schematic diagram of the corresponding image decryption method of image encryption method in Fig. 3；
Fig. 6 is fourth embodiment of the invention offer based on optical encryption and the structure of the image encrypting apparatus of decryption technology
Schematic diagram；
Fig. 7 is fifth embodiment of the invention offer based on optical encryption and the structure of the image encrypting apparatus of decryption technology
Schematic diagram；
Fig. 8 is sixth embodiment of the invention offer based on optical encryption and the structure of the image decrypting device of decryption technology
Schematic diagram.
Specific embodiment
For enabling goal of the invention of the invention, feature, advantage more obvious and understandable, below in conjunction with the present invention
Accompanying drawing in embodiment, is clearly and completely described to the technical scheme in the embodiment of the present invention, it is clear that described reality
It is only a part of embodiment of the invention to apply example, and not all embodiments.Based on the embodiment in the present invention, people in the art
The every other embodiment obtained under the premise of creative work is not made by member, belongs to the scope of protection of the invention.
Fig. 1 is referred to, Fig. 1 provides the image encryption side based on optical encryption and decryption technology for first embodiment of the invention
Method realizes schematic flow sheet, can be applicable in optical encryption and decryption system, the image encryption method shown in Fig. 1, main to wrap
Include following steps：
S101, image to be encrypted is converted into into binary sequence code.
The image to be encrypted is gray level image, or coloured image.In a computer, any storage format is to be added
Close image can be converted to binary sequence code, the storage format of the image to be encrypted can for bitmap file (BMP,
Bitmap) form, or PC exchanges (PCX, Personal Computer Exchange) form, or
GIF(Graphic Interchange format) (GIF, Graphics Interchange Format) form, can also be joint photo expert group
(JPEG, Joint Photographic Expert Group) form, can also be other storage formats, not repeat herein.
S102, according to preset conversion sequence rule, the binary sequence code is converted into into decimal sequence code.
S103, the order for arriving last position according to first place in the decimal sequence code, the decimal sequence code are divided into multiple
Fragment, and the capacity of each fragment in the plurality of fragment is set respectively less than or equal to the maximum capacity of single Quick Response Code.
Each fragment includes multiple decimal system numbers.The maximum capacity be intrinsic parameter, different types of Quick Response Code
With different maximum capacities.For example, the maximum capacity of single conventional two-dimensional code is 1167 digital, single small Quick Response Codes
The maximum capacity of (Micro QR Code) is 35 digital.
S104, Quick Response Code corresponding with the fragment is converted the piece to, and the Quick Response Code is carried out into optical encryption, so that
The Quick Response Code encrypted is reduced to the image to be encrypted by visual decryption.
One fragment corresponding conversion is into a Quick Response Code.The Quick Response Code of generation is required to carry out optical encryption, to obtain
The Quick Response Code of encryption.
In the embodiment of the present invention, image to be encrypted is converted into into binary sequence code；According to preset conversion sequence rule,
The binary sequence code is converted into into decimal sequence code, according to the first order to last position in the decimal sequence code, should
Decimal sequence code is divided into multiple fragments, and arranges the capacity of each fragment in the plurality of fragment respectively less than or equal to single
The maximum capacity of Quick Response Code, converts the piece to Quick Response Code corresponding with the fragment, and the Quick Response Code is carried out optical encryption,
So that the Quick Response Code encrypted is reduced to the image to be encrypted by visual decryption, so using Quick Response Code as image carrier,
Optical encryption is carried out to the Quick Response Code again, can prevent from being disturbed by speckle noise by the image that visual decryption is restored,
And then the image for decrypting is become apparent from completely.
Refer to Fig. 2, Fig. 2 for second embodiment of the invention provide based on optical encryption and the image encryption of decryption technology
Method realizes schematic flow sheet, can be applicable in optical encryption and decryption system, shown in Fig. 2 based on optical encryption and decryption
The image encryption method of technology, mainly includes the following steps that：
S201, image to be encrypted is converted into into binary sequence code.
The image to be encrypted is gray level image.In a computer, the image to be encrypted of any storage format can be changed
For binary sequence code, the storage format of the image to be encrypted can be BMP forms, or PCX forms, or
GIF forms, can also be jpeg format, can also be other storage formats, not repeat herein.
S202, according to pre-set sequence from the beginning of the binary numeral of decimal system number is not converted in the binary sequence code
Extract four bits.
The pre-set sequence is the first putting in order to last position in the binary sequence code.For example, turned by image in S201
The binary sequence code for changing into is 10010101111000, then the first place of the binary sequence code is positioned at the whole sequence leftmost side
Binary numeral 1, the last position of the binary sequence code is the binary numeral 0 positioned at the whole sequence rightmost side, two is entered from this
Four bits extracted in sequence code processed are 1001.
S203, by way of the numerical value of four bits determines and for binary numeral to be converted into decimal system number.
Alternatively, it is concrete by way of binary numeral is converted into decimal system number by the numerical value determination of four bits
For：
If four bits be 1000 or 1001, according to preset binary system turn decimal scale rule, by for 1000 this
Four bits switch are decimal system number 8, or are decimal system number 9 by four bits switch for 1001；
If four bits are neither 1000 also non-1001, again according to the pre-set sequence from the binary sequence code not
Be converted into decimal system number binary numeral start extract three bits, and according to the binary system turn decimal scale rule by this three
Individual bits switch is decimal system number.
Preset binary system turns decimal scale rule：Binary numeral 1000 is converted to decimal system number 8, binary numeral
1001 are converted to decimal system number 9, and binary numeral 000 is converted to decimal system number 0, and binary numeral 001 is converted to ten and enters
System digital 1, binary numeral 010 is converted to decimal system number 2, and binary numeral 011 is converted to decimal system number 3, binary system
Digital 100 are converted to decimal system number 4, and binary numeral 101 is converted to decimal system number 5, and binary numeral 110 is converted to ten
System number 6, binary numeral 111 are converted to decimal system number 7.
S204, the process for continuing executing with four bits of extraction, until all binary numerals are equal in the binary sequence code
It is converted into decimal system number.
Step S202- step S203 is illustrated by taking binary sequence code 10010101111000 as an example, is first according to pre-
Put order and extract non-switched four bits 1001 from sequence, and directly decimal system number 9 is converted into by 1001；Continue according to
Pre-set sequence extracts non-switched four bits 0101, and four bits are neither 1000 nor 1001, then according to preset
Order extracts non-switched three bits 010 again, and is converted to decimal system number 2 by 010；Then proceed to according to pre-set sequence
Non-switched four bits 1111 are extracted from sequence, and four bits are neither 1000 nor 1001, then according to preset
Order extracts non-switched three bits 111 again, and is converted to decimal system number 7 by 111；Be further continued for according to pre-set sequence from
Non-switched four bits 1000 are extracted in sequence, and are directly converted to decimal system number 8 by 1000.
S205, according to conversion tandem the decimal system number for obtaining is arranged, obtain the decimal sequence code.
Tandem according to conversion is before the decimal system number that first will be converted to is arranged in, after be converted to ten
Behind system number is arranged in, for example, by taking the decimal system number being converted in above-mentioned steps S204 as an example, before conversion
Sequentially carry out afterwards arranging the decimal sequence code for obtaining and be：9278.
S206, the order for arriving last position according to first place in the decimal sequence code, the decimal sequence code are divided into multiple
Fragment, and the capacity of each fragment in the plurality of fragment is set respectively less than or equal to the maximum capacity of single Quick Response Code.
Each fragment includes multiple decimal system numbers.The first order and binary sequence to last position in decimal sequence code
In code, the first order to last position direction between the two is consistent, and for example, decimal sequence code is 9278, then decimal scale sequence
The first place of row code is 9, and last position is 8.The capacity of each fragment is necessarily less than or equal to the maximum capacity of single Quick Response Code, example
Such as, it is assumed that the maximum capacity of single Quick Response Code is 2 digital, and decimal sequence code is 9278, then two for dividing fragment difference
For：Fragment A includes 9 and 2, and fragment B includes 7 and 8；The maximum capacity for assuming single Quick Response Code is 3 digital, then have two
Dividing mode is planted, the first dividing mode is：Fragment A includes 9 and 2, and fragment B includes 7 and 8；Second dividing mode be：
Fragment A includes 9,2 and 7, and fragment B includes 8.
S207, Quick Response Code corresponding with the fragment is converted the piece to, and the Quick Response Code is carried out into optical encryption, so that
The Quick Response Code encrypted is reduced to the image to be encrypted by visual decryption.
S208, put in order according to each decimal system number in the decimal sequence code, to the corresponding two dimension of each fragment
The preset fragment sequence number of code insertion, so as to reduce decimal sequence code by the fragment for dividing according to the fragment sequence number in decryption.
One fragment corresponding conversion is a Quick Response Code.Fragment sequence number is intended to indicate that the tandem of fragment arrangement.Should
Fragment sequence number can be represented in digital form, such as 1,2,3 ... .N, and numeral is less, and more forward, the fragment sequence number also may be used for arrangement
To use Roman number, can be with self-defined with the character for putting in order.For example, decimal sequence code is 9278, in fragment A
Including 9 and 2, fragment B includes 7 and 8, then the fragment serial number 1 of fragment A, the fragment serial number 2 of fragment B, then fragment A is arranged
Before being listed in, behind fragment B is arranged in.The decimal sequence code generated by fragment in decryption may insure by fragment sequence number
In each digital sequence consensus in each digital order and decimal sequence code during encryption.
Fig. 3 is the schematic diagram for being converted to Quick Response Code process by image.As shown in figure 3, below with a concrete instance to upper
State step S201- step S208 to illustrate, it is specific as follows：
Step 1：Image to be encrypted is converted to into 001110100010011110110010010001000 binary sequence
Code；
Step 2:The binary numeral that decimal system number is not converted into from the binary sequence code according to pre-set sequence is opened
Begin to extract four bits 0011；
Step 3：Four bits neither 1000 also non-1001, then again according to the pre-set sequence from the binary sequence code
In be not converted into decimal system number binary numeral start extract three bits 001, and according to the system turn decimal scale rule
It is decimal system number 1 by the bits switch；
Step 4：Step 1 is continued executing with, four for extracting bit is 1101, and then execution step 3, extract again
Three bits are 110, and are converted to decimal system number 6 by 110；
Step 5：Step 1 is continued executing with, and four for extracting bit is 1000, and directly decimal number is converted to by 1000
Code 8；
Step 6：Step 1 is continued executing with, and four for extracting bit is 1001, and directly decimal number is converted to by 1001
Code 9；
The binary sequence code of step 1 is converted to into decimal sequence code 1689731108 according to above-mentioned process；
Assume that the maximum capacity of Quick Response Code is digital for 4, then the three fragments difference decimal sequence code being divided into
For fragment 1, fragment 2 and fragment 3, wherein fragment 1 includes 1689, and fragment 2 includes 7311, and fragment 3 includes 08, meets every
Individual fragment is respectively less than the maximum capacity of single Quick Response Code；
Then fragment 1 is converted to into Quick Response Code A, fragment 2 is converted to into Quick Response Code B, fragment 3 is converted to into Quick Response Code C, its
Middle digital 1,2 and 3 are fragment sequence number.
It should be noted that the mode of above-mentioned division fragment is only a citing, in each fragment that satisfaction is marked off
In the case of the maximum capacity of respectively less than single Quick Response Code, other dividing modes can be selected.
In the embodiment of the present invention, image to be encrypted is converted into into binary sequence code, according to pre-set sequence from the binary system
The binary numeral for being not converted into decimal system number in sequence code starts to extract four bits, and the numerical value by four bits is true
The fixed mode that binary numeral is converted into decimal system number, continues executing with the process for extracting four bits, until the binary system
In sequence code, all binary numerals are converted into decimal system number, according to the tandem of conversion to the decimal system number that obtains
Arranged, obtained the decimal sequence code, according to the first order to last position in the decimal sequence code, by the decimal scale sequence
Row code is divided into multiple fragments, and arranges the capacity of each fragment in the plurality of fragment respectively less than or equal to single Quick Response Code
Maximum capacity, converts the piece to Quick Response Code corresponding with the fragment, and the Quick Response Code is carried out optical encryption, so as to add
Close Quick Response Code is reduced to the image to be encrypted by visual decryption, according to the row of each decimal system number in the decimal sequence code
Row order, inserts preset fragment sequence number to the corresponding Quick Response Code of each fragment so that in decryption by the fragment for dividing according to
The fragment sequence number reduces decimal sequence code, so Quick Response Code then is carried out optics to the Quick Response Code and is added as the carrier of image
It is close, can prevent from being disturbed by speckle noise by the image that visual decryption is restored, and then cause the image for decrypting more
Plus complete display.
Fig. 4 is referred to, Fig. 4 provides the image decryption side based on optical encryption and decryption technology for third embodiment of the invention
Method realizes schematic flow sheet, can be applicable in optical encryption and decryption system, conciliates secret skill based on optical encryption shown in Fig. 4
The image decryption method of art, mainly includes the following steps that：
S401, Quick Response Code to be decrypted is carried out into visual decryption, the Quick Response Code decrypted, and the two dimension that this has been decrypted
Code is converted to the fragment for including decimal system number.
In S402, the Quick Response Code decrypted according to this, preset fragment sequence number, the fragment after conversion is arranged, with life
Into decimal sequence code.
S403, according to preset conversion sequence rule, the decimal sequence code is converted into into binary sequence code；
S404, switched binary sequence code is reduced to into image.
The decryption method of step S401- step S404 and image encryption method in the embodiment shown in above-mentioned Fig. 1 and Fig. 2
Correspondence, related content refer to the description of above-mentioned Fig. 1 and Fig. 2 embodiments, and here is omitted.
Fig. 5 is the schematic diagram of image decryption method corresponding with image encryption method in Fig. 3.
In the embodiment of the present invention, Quick Response Code to be decrypted is carried out into visual decryption, the Quick Response Code decrypted, and by this
The Quick Response Code of decryption is converted to the fragment for including decimal system number, according to fragment sequence preset in the Quick Response Code that this has been decrypted
Number, the fragment after conversion is arranged, to generate decimal sequence code, according to preset conversion sequence rule, this ten is entered
Sequence code processed is converted into binary sequence code, switched binary sequence code is reduced to image, so first Quick Response Code is entered
Row visual decryption, then the Quick Response Code decrypted is restored into image can prevent the interference of speckle noise, and then cause to decrypt
Image become apparent from completely, while decimal scale sequence when fragment more accurately can be reduced into encryption using fragment sequence number
Row code.
Fig. 6 is referred to, Fig. 6 is fourth embodiment of the invention offer based on optical encryption and the image encryption of decryption technology
The structural representation of device, for convenience of description, illustrate only the part related to the embodiment of the present invention.Fig. 6 examples based on
The image encrypting apparatus of optical encryption and decryption technology can be being added based on optics of providing of aforementioned Fig. 1 and embodiment illustrated in fig. 2
The executive agent of the image encryption method of close and decryption technology.Fig. 6 examples are added based on the image of optical encryption and decryption technology
Close device, mainly includes：Modular converter 601 and division module 602.Each functional module describes in detail as follows above：
Modular converter 601, for being converted into binary sequence code by image to be encrypted；
Modular converter 601, is additionally operable to, according to preset conversion sequence rule, the binary sequence code is converted into decimal scale
Sequence code；
Division module 602, for according to the first order to last position in the decimal sequence code, by the decimal sequence code
Multiple fragments are divided into, and the capacity of each fragment in the plurality of fragment is set and be respectively less than or equal to the maximum of single Quick Response Code
Capacity；
Modular converter 601, is additionally operable to convert the piece to Quick Response Code corresponding with the fragment, and the Quick Response Code is carried out
Optical encryption, so that the Quick Response Code encrypted is reduced to the image to be encrypted by visual decryption.
The present embodiment details not to the greatest extent, refers to the description of aforementioned embodiment illustrated in fig. 1, and here is omitted.
In the embodiment of the present invention, image to be encrypted is converted into binary sequence code by modular converter 601, and according to preset
The binary sequence code is converted into decimal sequence code by conversion sequence rule, and division module 602 is according to the decimal sequence code
The decimal sequence code is divided into multiple fragments, and arranges each fragment in the plurality of fragment by the middle the first order to last position
Capacity be respectively less than or equal to the maximum capacity of single Quick Response Code, then modular converter 601 is converted the piece to and the piece
The corresponding Quick Response Code of section, and the Quick Response Code is carried out into optical encryption, so that the Quick Response Code encrypted is reduced to by visual decryption
Quick Response Code so then is carried out optical encryption to the Quick Response Code as the carrier of image, can prevent from passing through by the image to be encrypted
The image that visual decryption is restored is disturbed by speckle noise, and then the image for decrypting is become apparent from completely.
It should be noted that the enforcement based on optical encryption and the image encrypting apparatus of decryption technology of figure 6 above example
In mode, the division of each functional module is merely illustrative of, can as needed in practical application, such as the configuration of corresponding hardware
Require or the convenient of realization of software considers, and above-mentioned functions distribution is completed by different functional modules, light will be based on
The internal structure for learning the image encrypting apparatus of encryption and decryption technology is divided into different functional modules, described above to complete
All or part of function.And, in practical application, the corresponding functional module in the present embodiment can be by corresponding hardware
Realize, it is also possible to corresponding software is performed by corresponding hardware and is completed.Each embodiment that this specification is provided can all apply upper
Description principle is stated, is below repeated no more.
Refer to Fig. 7, Fig. 7 for fifth embodiment of the invention provide based on optical encryption and the image encryption of decryption technology
The structural representation of device, for convenience of description, illustrate only the part related to the embodiment of the present invention.Fig. 7 examples based on
The image encrypting apparatus of optical encryption and decryption technology can be being added based on optics of providing of aforementioned Fig. 1 and embodiment illustrated in fig. 2
The executive agent of the image encryption method of close and decryption technology.Fig. 7 examples are added based on the image of optical encryption and decryption technology
Close device, mainly includes：Modular converter 701, division module 702 and setup module 703, wherein modular converter 701 include：Extract
Module 7011, determining module 7012, performing module 7013 and arrangement module 7014；Determining module 7012 includes：Transform subblock
70121.Each functional module describes in detail as follows above：
Modular converter 701, for being converted into binary sequence code by image to be encrypted.
The image to be encrypted is gray level image.In a computer, the image to be encrypted of any storage format can be changed
For binary sequence code, the storage format of the image to be encrypted can be BMP forms, or PCX forms, or
GIF forms, can also be jpeg format, can also be other storage formats, not repeat herein.
Modular converter 701 includes：Extraction module 7011, determining module 7012, performing module 7013 and arrangement module 7014；
Determining module 7012 includes：Transform subblock 70121.
Extraction module 7011, for being not converted into the two of decimal system number from the binary sequence code according to pre-set sequence
System number starts to extract four bits.
The pre-set sequence is the first putting in order to last position in the binary sequence code.For example, turned by image in S201
The binary sequence code for changing into is 10010101111000, then the first place of the binary sequence code is positioned at the whole sequence leftmost side
Binary numeral 1, the last position of the binary sequence code is the binary numeral 0 positioned at the whole sequence rightmost side, two is entered from this
Four bits extracted in sequence code processed are 1001.
Determining module 7012, determines for the numerical value by four bits and for binary numeral to be converted into decimal system number
Mode.
Optionally it is determined that module 7012 includes：Transform subblock 70121.
Transform subblock 70121, if being 1000 or 1001 for four bits, turns ten according to preset binary system and enters
Four bits switch for 1000 are decimal system number 8, or four bits switch for 1001 are entered for ten by system rule
System digital 9；
Transform subblock 70121, it is if being additionally operable to four bits neither 1000 also non-1001, again preset suitable according to this
Sequence be not converted into from the binary sequence code binary numeral of decimal system number start extract three bits, and according to this two
It is decimal system number that system turns decimal scale rule by three bits switch.
Preset binary system turns decimal scale rule：Binary numeral 1000 is converted to decimal system number 8, binary numeral
1001 are converted to decimal system number 9, and binary numeral 000 is converted to decimal system number 0, and binary numeral 001 is converted to ten and enters
System digital 1, binary numeral 010 is converted to decimal system number 2, and binary numeral 011 is converted to decimal system number 3, binary system
Digital 100 are converted to decimal system number 4, and binary numeral 101 is converted to decimal system number 5, and binary numeral 110 is converted to ten
System number 6, binary numeral 111 are converted to decimal system number 7.
Performing module 7013, for continuing executing with the process for extracting four bits, until own in the binary sequence code
Binary numeral is converted into decimal system number.
Step S202- step S203 is illustrated by taking binary sequence code 10010101111000 as an example, is first according to pre-
Put order and extract non-switched four bits 1001 from sequence, and directly decimal system number 9 is converted into by 1001；Continue according to
Pre-set sequence extracts non-switched four bits 0101, and four bits are neither 1000 nor 1001, then according to preset
Order extracts non-switched three bits 010 again, and is converted to decimal system number 2 by 010；Then proceed to according to pre-set sequence
Non-switched four bits 1111 are extracted from sequence, and four bits are neither 1000 nor 1001, then according to preset
Order extracts non-switched three bits 111 again, and is converted to decimal system number 7 by 111；Be further continued for according to pre-set sequence from
Non-switched four bits 1000 are extracted in sequence, and are directly converted to decimal system number 8 by 1000.
Arrangement module 7014, for arranging to the decimal system number for obtaining according to the tandem of conversion, is somebody's turn to do
Decimal sequence code.
Tandem according to conversion is before the decimal system number that first will be converted to is arranged in, after be converted to ten
Behind system number is arranged in, for example, by taking the decimal system number being converted in above-mentioned steps S204 as an example, before conversion
Sequentially carry out afterwards arranging the decimal sequence code for obtaining and be：9278.
Division module 702, for according to the first order to last position in the decimal sequence code, by the decimal sequence code
Multiple fragments are divided into, and the capacity of each fragment in the plurality of fragment is set and be respectively less than or equal to the maximum of single Quick Response Code
Capacity.
Each fragment includes multiple decimal system numbers.The first order and binary sequence to last position in decimal sequence code
In code, the first order to last position direction between the two is consistent, and for example, decimal sequence code is 9278, then decimal scale sequence
The first place of row code is 9, and last position is 8.The capacity of each fragment is necessarily less than or equal to the maximum capacity of single Quick Response Code, example
Such as, it is assumed that the maximum capacity of single Quick Response Code is 2 digital, and decimal sequence code is 9278, then two for dividing fragment difference
For：Fragment A includes 9 and 2, and fragment B includes 7 and 8；The maximum capacity for assuming single Quick Response Code is 3 digital, then have two
Dividing mode is planted, the first dividing mode is：Fragment A includes 9 and 2, and fragment B includes 7 and 8；Second dividing mode be：
Fragment A includes 9,2 and 7, and fragment B includes 8.
The Quick Response Code for converting the piece to Quick Response Code corresponding with the fragment, and is carried out light by modular converter 701
Encryption is learned, so that the Quick Response Code encrypted is reduced to the image to be encrypted by visual decryption.
Setup module 703, for putting in order according to each decimal system number in the decimal sequence code, to each fragment
Corresponding Quick Response Code inserts preset fragment sequence number, so as to enter the fragment of division according to the fragment sequence number reduction ten in decryption
Sequence code processed.
One fragment corresponding conversion is a Quick Response Code.Fragment sequence number is intended to indicate that the tandem of fragment arrangement.Should
Fragment sequence number can be represented in digital form, such as 1,2,3 ... .N, and numeral is less, and more forward, the fragment sequence number also may be used for arrangement
To use Roman number, can be with self-defined with the character for putting in order.For example, decimal sequence code is 9278, in fragment A
Including 9 and 2, fragment B includes 7 and 8, then the fragment serial number 1 of fragment A, the fragment serial number 2 of fragment B, then fragment A is arranged
Before being listed in, behind fragment B is arranged in.The decimal sequence code generated by fragment in decryption may insure by fragment sequence number
In each digital sequence consensus in each digital order and decimal sequence code during encryption.
The present embodiment details not to the greatest extent, refers to the description of aforementioned Fig. 1 and embodiment illustrated in fig. 2, and here is omitted.
In the embodiment of the present invention, image to be encrypted is converted into binary sequence code, extraction module 7011 by modular converter 701
The binary numeral that decimal system number is not converted into from the binary sequence code according to pre-set sequence starts to extract four bits,
Determining module 7012 performs mould by way of the numerical value of four bits determines for binary numeral to be converted into decimal system number
Block 7013 continues executing with the process for extracting four bits, until all binary numerals are converted into ten in the binary sequence code
System is digital, arranges module 7014 and the decimal system number for obtaining is arranged according to the tandem of conversion, obtains this and ten enters
The decimal sequence code is divided by sequence code processed, division module 702 according to the first order to last position in the decimal sequence code
For multiple fragments, and the capacity of each fragment in the plurality of fragment is set it is respectively less than or holds equal to the maximum of single Quick Response Code
Amount, modular converter 701 converts the piece to Quick Response Code corresponding with the fragment, and the Quick Response Code is carried out optical encryption, with
The Quick Response Code encrypted is made to be reduced to the image to be encrypted by visual decryption, setup module 703 is according to the decimal sequence code
In each decimal system number put in order, preset fragment sequence number is inserted to the corresponding Quick Response Code of each fragment, so that in decryption
When the fragment for dividing is reduced into decimal sequence code according to the fragment sequence number, so using Quick Response Code as image carrier, it is then right
The Quick Response Code carries out optical encryption, can prevent from being disturbed by speckle noise by the image that visual decryption is restored, and then
So that the image for decrypting becomes apparent from completely.
Fig. 8 is referred to, Fig. 8 is sixth embodiment of the invention offer based on optical encryption and the image decryption of decryption technology
The structural representation of device, for convenience of description, illustrate only the part related to the embodiment of the present invention.Fig. 8 examples based on
The image decrypting device of optical encryption and decryption technology can be being conciliate based on optical encryption for aforementioned embodiment illustrated in fig. 3 offer
The executive agent of the image decryption method of secret skill art.Fig. 8 examples based on optical encryption and the image decrypting device of decryption technology,
Mainly include：Modular converter 801, generation module 802 and recovery module 803.Each functional module describes in detail as follows above：
Modular converter 801, for Quick Response Code to be decrypted is carried out visual decryption, the Quick Response Code decrypted, and should
The Quick Response Code decrypted is converted to the fragment for including decimal system number；
Generation module 802, for fragment sequence number preset in the Quick Response Code decrypted according to this, the fragment after conversion is entered
Row arrangement, to generate decimal sequence code；
Modular converter 801, for according to preset conversion sequence rule, being converted into binary system sequence by the decimal sequence code
Row code；
Recovery module 803, for and switched binary sequence code is reduced to into image.
The present embodiment details not to the greatest extent, refers to the description of aforementioned Fig. 1, Fig. 2 and embodiment illustrated in fig. 3, no longer goes to live in the household of one's in-laws on getting married herein
State.
It should be noted that the image decrypting device based on optical encryption and decryption technology in the embodiment of the present invention with it is upper
State may be located in a terminal based on the image encrypting apparatus of optical encryption and decryption technology shown in Fig. 6 and Fig. 7, it is also possible to
In different terminals.
In the embodiment of the present invention, Quick Response Code to be decrypted is carried out visual decryption by modular converter 801, the two dimension decrypted
Code, and the Quick Response Code decrypted is converted to the fragment for including decimal system number, what generation module 802 had been decrypted according to this
Fragment sequence number preset in Quick Response Code, the fragment after conversion is arranged, to generate decimal sequence code, modular converter 801
According to preset conversion sequence rule, the decimal sequence code is converted into into binary sequence code, recovery module 803 has been changed
Binary sequence code be reduced to image, so first carry out visual decryption to Quick Response Code, then the Quick Response Code decrypted restored
Image can prevent the interference of speckle noise, and then the image for decrypting is become apparent from completely, while utilizing fragment sequence number
The decimal sequence code that more accurately fragment can be reduced into during encryption.
In multiple embodiments provided herein, it should be understood that disclosed system, apparatus and method, can be with
Realize by another way.For example, device embodiment described above is only schematic, for example, the module
Divide, only a kind of division of logic function can have other dividing mode, such as multiple module or components when actually realizing
Can with reference to or be desirably integrated into another system, or some features can be ignored, or not perform.It is another, it is shown or
The coupling each other for discussing or direct-coupling or communication linkage can be the indirect couplings by some interfaces, device or module
Close or communication linkage, can be electrical, mechanical or other forms.
The module as separating component explanation can be or may not be it is physically separate, it is aobvious as module
The part for showing can be or may not be physical module, you can local to be located at one, or can also be distributed to multiple
On mixed-media network modules mixed-media.Some or all of module therein can be selected according to the actual needs to realize the mesh of this embodiment scheme
's.
In addition, each functional module in each embodiment of the invention can be integrated in a processing module, it is also possible to
It is that modules are individually physically present, it is also possible to which two or more modules are integrated in a module.Above-mentioned integrated mould
Block both can be realized in the form of hardware, it would however also be possible to employ the form of software function module is realized.
If the integrated module is realized and as independent production marketing or use using in the form of software function module
When, can be stored in a computer read/write memory medium.Based on such understanding, technical scheme is substantially
The part for contributing to prior art in other words or all or part of the technical scheme can be in the form of software products
Embody, the computer software product is stored in a storage medium, use so that a computer including some instructions
Equipment (can be personal computer, server, or network equipment etc.) performs the complete of each embodiment methods described of the invention
Portion or part steps.And aforesaid storage medium includes：USB flash disk, portable hard drive, read only memory (ROM, Read-Only
Memory), random access memory (RAM, Random Access Memory), magnetic disc or CD etc. are various can store journey
The medium of sequence code.
It should be noted that for aforesaid each method embodiment, for easy description, therefore which is all expressed as a series of
Combination of actions, but those skilled in the art should know, the present invention do not limited by described sequence of movement because
According to the present invention, some steps can adopt other orders or while carry out.Secondly, those skilled in the art should also know
Know, embodiment described in this description belongs to preferred embodiment, and involved action and module might not all be these
It is bright necessary.
In the above-described embodiments, the description to each embodiment all emphasizes particularly on different fields, and does not have the portion described in detail in certain embodiment
Point, may refer to the associated description of other embodiments.
It is more than to the image encryption and decryption method based on optical encryption and decryption technology provided by the present invention and dress
The description put, for those skilled in the art, according to the thought of the embodiment of the present invention, in specific embodiment and range of application
On will change, to sum up, this specification content should not be construed as limiting the invention.
Claims (10)
1. it is a kind of based on optical encryption and the image encryption method of decryption technology, it is characterised in that to include：
Image to be encrypted is converted into into binary sequence code；
According to preset conversion sequence rule, the binary sequence code is converted into into decimal sequence code；
According to the first order to last position in the decimal sequence code, the decimal sequence code is divided into into multiple fragments,
And the capacity of each fragment in the plurality of fragment is set respectively less than or equal to the maximum capacity of single Quick Response Code；
The fragment is converted into into Quick Response Code corresponding with the fragment, and the Quick Response Code is carried out into optical encryption, so that
The Quick Response Code of encryption is reduced to the image to be encrypted by visual decryption.
2. method according to claim 1, it is characterised in that described according to preset conversion sequence rule, by described two
System sequence code is converted into decimal sequence code to be included：
The binary numeral that decimal system number is not converted into from the binary sequence code according to pre-set sequence starts extraction four
Individual bit, wherein described pre-set sequence are the first putting in order to last position in the binary sequence code；
By way of binary numeral is converted into decimal system number by the numerical value determination of four bits；
The process for extracting four bits is continued executing with, until all binary numerals are converted into ten in the binary sequence code
System is digital；
Tandem according to conversion is arranged to the decimal system number for obtaining, and obtains the decimal sequence code.
3. method according to claim 2, it is characterised in that described to determine to enter two by the numerical value of four bits
Digit speech recognition processed includes into the mode of decimal system number：
If four bits are 1000 or 1001, turn decimal scale rule according to preset binary system, by described in 1000
Four bits switch are decimal system number 8, or are decimal system number 9 by four bits switch for 1001；
If four bits are neither 1000 also non-1001, again according to the pre-set sequence from the binary sequence code
The binary numeral for being not converted into decimal system number starts to extract three bits, and turns decimal scale rule general according to the binary system
Three bits switch are decimal system number.
4. the method according to any one of claim 1-3, it is characterised in that described that the fragment is converted into and described
The corresponding Quick Response Code of section, and after the Quick Response Code is carried out optical encryption, also include：
Put in order according to each decimal system number in the decimal sequence code, it is pre- to the corresponding Quick Response Code insertion of each fragment
The fragment sequence number put, so as to reduce decimal sequence code by the fragment for dividing according to the fragment sequence number in decryption.
5. it is a kind of based on optical encryption and decryption image decryption method, it is characterised in that methods described includes：
Quick Response Code to be decrypted is carried out into visual decryption, the Quick Response Code decrypted, and the Quick Response Code decrypted is changed
For including the fragment of decimal system number；
According to fragment sequence number preset in the Quick Response Code decrypted, the fragment after conversion is arranged, is entered with generating ten
Sequence code processed；
According to preset conversion sequence rule, the decimal sequence code is converted into into binary sequence code；
And switched binary sequence code is reduced to into image.
6. it is a kind of based on optical encryption and decryption image encrypting apparatus, it is characterised in that described device includes：
Modular converter, for being converted into binary sequence code by image to be encrypted；
The modular converter, is additionally operable to, according to preset conversion sequence rule, the binary sequence code is converted into decimal scale
Sequence code；
Division module, for according to the first order to last position in the decimal sequence code, the decimal sequence code being drawn
It is divided into multiple fragments, and the capacity of each fragment in the plurality of fragment is set and is respectively less than or equal to the maximum of single Quick Response Code
Capacity；
The modular converter, is additionally operable to for the fragment to be converted into Quick Response Code corresponding with the fragment, and by the Quick Response Code
Optical encryption is carried out, so that the Quick Response Code encrypted is reduced to the image to be encrypted by visual decryption.
7. device according to claim 6, it is characterised in that the modular converter includes：
Extraction module, for being not converted into the binary number of decimal system number from the binary sequence code according to pre-set sequence
Code starts to extract four bits, and wherein described pre-set sequence is the first putting in order to last position in the binary sequence code；
Determining module, determines the side that binary numeral is converted into decimal system number for the numerical value by four bits
Formula；
Performing module, for continuing executing with the process for extracting four bits, until all binary systems in the binary sequence code
Number is converted into decimal system number；
Arrangement module, for arranging to the decimal system number for obtaining according to the tandem of conversion, obtains the decimal scale
Sequence code.
8. device according to claim 7, it is characterised in that the determining module includes：
Transform subblock, if being 1000 or 1001 for four bits, turns decimal scale rule according to preset binary system,
It is decimal system number 8 by four bits switch for 1000, or is decimal scale by four bits switch for 1001
Digital 9；
The transform subblock, if being additionally operable to four bits neither 1000 also non-1001, again according to described preset suitable
Sequence is not converted into the binary numeral of decimal system number from the binary sequence code and starts to extract three bits, and according to institute
State binary system to turn decimal scale rule by three bits switch is decimal system number.
9. the device according to any one of claim 6-8, it is characterised in that described device also includes：
Setup module, for putting in order according to each decimal system number in the decimal sequence code, to each fragment correspondence
Quick Response Code insert preset fragment sequence number, so as to the fragment for dividing is reduced decimal scale according to the fragment sequence number in decryption
Sequence code.
10. it is a kind of based on optical encryption and decryption image decrypting device, it is characterised in that described device includes：
Modular converter, for Quick Response Code to be decrypted is carried out visual decryption, the Quick Response Code decrypted, and decrypted described
Quick Response Code be converted to the fragment for including decimal system number；
Generation module, for according to fragment sequence number preset in the Quick Response Code decrypted, the fragment after conversion being arranged
Row, to generate decimal sequence code；
The modular converter, for according to preset conversion sequence rule, being converted into binary system sequence by the decimal sequence code
Row code；
Recovery module, for being reduced to image by switched binary sequence code.
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