CN115174036A - Medical insurance data security transmission system and method based on data processing - Google Patents
Medical insurance data security transmission system and method based on data processing Download PDFInfo
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Abstract
The invention discloses a system and a method for safely transmitting medical insurance data based on data processing, and relates to the field of safe transmission. The method comprises the following steps: s1: obtaining a security key, comprising: s101, acquiring a coding mode sequence as a sub-key 1; s102, acquiring a scrambling mode sequence as a sub-key 2; s103, acquiring a chaotic sequence corresponding to the sub-key 2; s104, taking the chaos mapping coefficient as a sub-key 3; s2: and encrypting the medical insurance data to be transmitted according to the sub-key 1, the sub-key 2 and the sub-key 3: s3: and transmitting and decrypting the encrypted medical insurance data. The encryption method has the advantages of strong key sensitivity and large key space, can effectively resist common cracking means such as information analysis and violence, has higher safety, and can ensure the safe transmission of medical insurance data.
Description
Technical Field
The invention relates to the field of safe transmission, in particular to a medical insurance data safe transmission system and method based on data processing.
Background
In order to guarantee the overall safety and controllability of national medical insurance bureau data, the medical insurance data needs to be guaranteed to safely circulate in the whole life cycle of acquisition, transmission, storage, use, sharing, cleaning, destruction and the like, wherein the medical insurance data is easily attacked and causes the medical insurance data to be leaked during transmission, and for sensitive personal information including biological characteristics, religious belief, specific identity, medical health, financial account, track and other personal information, once the information is leaked or illegally used, the personal dignity of natural people is easily damaged, and even the personal safety and property safety are harmed in severe cases.
The method of replacing or replacing the data to encrypt can play a certain role of encryption, but the replaced encryption method has weak sensitivity of the key, is easy to crack and has low safety. The invention provides a medical insurance data security transmission system and method based on data processing, which are characterized in that medical insurance data is converted into an information sequence, a security key is obtained according to a coding mode sequence, a scrambling mode sequence and a chaotic sequence, the information sequence is coded into a corresponding scanning mode according to the coding mode, pixel blocks are assigned according to the scanning mode, the assigned pixel blocks are scrambled according to the chaotic sequence and the scrambling mode obtained by the scrambling mode sequence, the scanning mode corresponding to the scrambled pixel blocks is decoded according to the coding mode to obtain an encrypted information sequence, the encryption of the medical insurance data is realized, and the security transmission of the medical insurance data is further realized. The encryption method has strong key sensitivity and large key space, can effectively resist common cracking means such as information analysis, violence and the like, has higher safety, and can ensure the safe transmission of medical insurance data.
Disclosure of Invention
Aiming at the technical problem, the invention provides a medical insurance data safety transmission system and method based on data processing.
The invention provides a system and a method for safely transmitting medical insurance data based on data processing. The medical insurance data are converted into the information sequence, the safety key is obtained according to the coding mode sequence, the scrambling mode sequence and the chaotic sequence, the information sequence is coded into the corresponding scanning mode according to the coding mode, the pixel block is assigned according to the scanning mode, the assigned pixel block is scrambled according to the chaotic sequence and the scrambling mode obtained by the scrambling mode sequence, the scanning mode corresponding to the scrambled pixel block is decoded according to the coding mode to obtain the encrypted information sequence, the encryption of the medical insurance data is realized, and the safety transmission of the medical insurance data is further realized. The encryption method has strong key sensitivity and large key space, can effectively resist common cracking means such as information analysis, violence and the like, has higher safety, and can ensure the safe transmission of medical insurance data.
In a first aspect, an embodiment of the present invention provides a method for securely transmitting medical insurance data based on data processing, including:
s1: acquiring all subkeys:
s101, obtaining all five-bit binary data to form a binary data information sequence, converting the binary data into scanning patterns to obtain a plurality of coding mode sequences, randomly selecting one coding mode sequence as a subkey 1, wherein the subkey 1 comprises the scanning patterns corresponding to each five-bit binary data, and the scanning patterns contained in the subkey 1 are not repeated;
s102, scrambling pixel values in a pixel block corresponding to each scanning mode in a sub-key 1 to obtain a plurality of scrambling mode sequences, and randomly selecting one scrambling mode sequence as a sub-key 2, wherein the sub-key 2 comprises a scrambling mode of the pixel values in the pixel block corresponding to each scanning mode;
s2: encrypting the medical insurance data to be transmitted:
s201, acquiring medical insurance data to be transmitted, converting the medical insurance data into five-digit binary data, and acquiring a coding mode sequence of the medical insurance data to be transmitted according to the sub-secret key 1;
s202, a scrambling mode at a position corresponding to the coding mode sequence of the medical insurance data to be transmitted in the sub-key 2 is obtained, and pixel values in a pixel block corresponding to the coding mode sequence of the medical insurance data to be transmitted are scrambled;
s203, acquiring scanning mode sequences corresponding to all the scrambled pixel blocks, and decoding each scanning mode in the scanning mode sequences into binary data by using the corresponding relation between the scanning mode and the binary data in the subkey 1 to obtain an encrypted medical insurance data information sequence to be transmitted;
s3: and transmitting the encrypted medical insurance data to be transmitted and decrypting the encrypted medical insurance data to be transmitted according to all the sub-keys and the scanning mode sequence.
Chaotic mapping is carried out on the obtained sub-secret key 2 to obtain a chaotic sequence, chaotic mapping coefficients are used as a sub-secret key 3, and in the process of encrypting the medical insurance data to be transmitted, a scrambling mode at a position in the chaotic sequence corresponding to a coding mode sequence is obtained to scramble pixel values in pixel blocks of a coding mode in the coding mode sequence of the medical insurance data to be transmitted.
The process of scrambling the pixel values in the pixel blocks of the coding modes in the coding mode sequence of the medical insurance data to be transmitted by acquiring the scrambling mode at the corresponding position in the coding mode sequence in the chaotic sequence comprises the following steps:
for the ith coding mode in the coding mode sequence of the medical insurance data to be transmitted, acquiring the ith numerical value in the chaotic sequencel i According to the first in the scrambling scheme sequencel i And scrambling the pixel values in the pixel block of the ith coding mode in the coding mode sequence of the medical insurance data to be transmitted by the scrambling mode.
The method for converting the binary data into the scanning pattern comprises the following steps:
scanning is carried out according to a pixel block with the size of 2 multiplied by 2, 4 pixels are connected by 3 directed line segments in an unrepeated mode according to the relationship from small to large, the directed line segments refer to line segments pointing to the pointed pixels from the pointed pixels according to the direction from small to large of pixel values, the formed pattern is a scanning pattern, the scanning patterns in 32 are obtained in total, and each binary data corresponds to a different scanning pattern.
The method for acquiring the scrambling mode sequence comprises the following steps:
pixel values of 4 pixel positions in a 2 × 2 pixel block are exchanged once, the order of change of the positions of the pixel values, i.e., the direction of exchange of the pixel values, is used as a scrambling method, and the scrambling methods of each pixel block are combined to obtain a scrambling method sequence, wherein the scrambling methods of the pixel values in each pixel block may be the same or different.
Chaotic mapping is carried out on the obtained sub-key 2 to obtain a chaotic sequence, and the method for taking the chaotic mapping coefficient as the sub-key 3 comprises the following steps:
chaotic mapping is carried out on the obtained sub-secret key 2 to obtain a chaotic sequence, chaotic domains in the chaotic mapping are multiplied by 24 respectively and rounded to obtain a chaotic domain with the value between [0 and 24], a chaotic mapping coefficient of the chaotic mapping is obtained, and the chaotic mapping coefficient is used as a sub-secret key 3.
In a second aspect, an embodiment of the present invention provides a medical insurance data security transmission system based on data processing, including:
a data conversion unit: the system comprises a binary data sequence, a data acquisition unit, a data transmission unit and a data transmission unit, wherein the binary data sequence is used for converting acquired medical insurance data to be transmitted into a binary data sequence with a five-digit length;
a data encryption unit: the system comprises a plurality of sub-keys 1, a plurality of sub-keys and a plurality of scanning modules, wherein the sub-keys are used for converting all binary data information sequences with five-bit length into scanning modes, the coding mode sequences corresponding to the scanning modes are used as the sub-keys 1, the sub-keys 1 comprise the scanning modes corresponding to each piece of five-bit binary data and serial numbers thereof, and the corresponding scanning modes are not repeated;
the scrambling module is used for scrambling the pixel values in the pixel blocks corresponding to each scanning mode in the obtained coding mode sequence to obtain a corresponding scrambling mode sequence in the coding mode sequence, and the scrambling mode sequence is used as a sub-secret key 2;
the system is used for converting the medical insurance data to be transmitted into binary data to obtain an information sequence of the medical insurance data to be transmitted;
the system is used for encrypting the medical insurance data sequence to be transmitted according to the sub-key 1 and the sub-key 2 to obtain encrypted medical insurance data;
a data transmission unit: and the system is used for transmitting the encrypted medical insurance data and decrypting the encrypted medical insurance data by utilizing the sub-key 1, the sub-key 2 and the anti-coding mode sequence.
Compared with the prior art, the embodiment of the invention has the beneficial effects that:
1. the information is coded into the scanning mode, the pixel blocks corresponding to the scanning mode are scrambled, decoding is carried out according to the scanning mode corresponding to the scrambled pixel blocks to obtain the encrypted information, the encrypted information can effectively resist common cracking means such as information analysis and violence, the safety is high, and the safe transmission of medical insurance data is further guaranteed.
2. The safety key of the invention is composed of three sub-keys, and the key space of each sub-key is larger, so that the key space of the safety key is larger, the safety transmission of medical insurance data is ensured, the probability of medical insurance data leakage or illegal use is greatly reduced, and the personal and property safety of natural people is protected.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
FIG. 1 is a block diagram of steps provided by a method for secure transmission of medical insurance data based on data processing according to an embodiment of the present invention;
fig. 2 is a first partial schematic view of a scanning mode provided by a data processing-based medical insurance data secure transmission method according to an embodiment of the present invention;
fig. 3 is a second partial schematic view of a scanning mode provided by the secure transmission method of medical insurance data based on data processing according to the embodiment of the present invention;
fig. 4 is an exemplary diagram of a directed scanning mode and an equivalent scanning mode provided by a data processing-based medical insurance data secure transmission method according to an embodiment of the present invention;
FIG. 5 is an exemplary diagram of scrambling modes provided by a secure transmission method of medical insurance data based on data processing according to an embodiment of the present invention;
fig. 6 is an exemplary diagram of an encryption method provided by a secure transmission method of medical insurance data based on data processing according to an embodiment of the present invention;
fig. 7 is an exemplary diagram of a decryption method provided by the method for securely transmitting the medical insurance data based on data processing according to the embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and do not limit the invention. All other embodiments, which can be obtained by a person skilled in the art without making any creative effort based on the embodiments in the present invention, belong to the protection scope of the present invention.
In the following description, for purposes of explanation and not limitation, specific details are set forth such as particular system structures, techniques, etc. in order to provide a thorough understanding of the embodiments of the present application. It will be apparent, however, to one skilled in the art that the present application may be practiced in other embodiments that depart from these specific details. In other instances, detailed descriptions of well-known systems, devices, circuits, and methods are omitted so as not to obscure the description of the present application with unnecessary detail.
The terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature; in the description of the present embodiment, "a plurality" means two or more unless otherwise specified.
Examples
The embodiment of the invention provides a medical insurance data security transmission method based on data processing, as shown in fig. 1, the specific contents include:
1. obtaining five-digit binary data information sequence
Since the medical insurance data needs to be encrypted and transmitted, the medical insurance data is converted into binary data for analysis and processing, and the calculation speed of the computer can be reduced.
The present embodiment performs an encryption process on data information in conjunction with a scan mode, sets 2 x 2 pixel blocks,there are 32 scan patterns in total, corresponding to 2 5 Therefore, the binary data is divided into a sequence of five digits, all the binary data of the five digits are obtained, and the information sequence of the binary data of the five digits is obtained.
2. Obtaining a subkey 1
For a 2 × 2 pixel block, the pixel block is scanned from small to large, 4 pixels are connected by 3 directional line segments without repetition, where a directional line segment refers to a line segment pointing from a pointing pixel to a pointed pixel in a direction of pixel values from small to large, the formed pattern is a scanning pattern, and the scanning pattern is as shown in fig. 2 and 3.
The scan patterns are classified into a directional scan pattern and an equivalent scan pattern, as shown in fig. 4. If the pixel values of the 4 pixels constituting the pixel block are not equal, for example, for the pixel block 1 shown in fig. 4, the corresponding scanning mode is a directional scanning mode, and finally 24 directional scanning modes are formed, specifically, the scanning modes 1 to 24 shown in fig. 2 and 3; if there are and only 3 pixels of the 4 pixels composing the pixel block have equal pixel values, the formed pattern is an equivalent scan pattern, for example, for the pixel block 2 and the pixel block 3 shown in fig. 4, the equivalent scan pattern corresponds to 8 equivalent scan patterns, and finally 8 equivalent scan patterns, specifically, the scan patterns 25 to 32 shown in fig. 2 and 3, are formed.
Since the data in the binary data information sequence is a 5-bit binary number, there are 32 kinds of information in total, and there is a one-to-one correspondence with the acquired 32 kinds of scanning patterns, so that the 32 kinds of information are coded and converted into 32 kinds of scanning patterns, and thus there are 32! The encoding method obtains 32!of binary data information sequence! And encrypting all the encoding modes by using an AES encryption algorithm, and selecting one encoding mode sequence as a sub-key 1.
3. Obtaining subkey 2
For a 2 × 2 pixel block, there are four pixels in total, so there are 24 scrambling schemes, and random ordering of these 24 scrambling schemes results in a scrambling scheme sequence, so there are 24! Seed, using AES encryption algorithm to pair 24! And encrypting the scrambling mode sequences, and selecting one of the scrambling mode sequences as the sub-key 2.
The calculation formula of the scrambling mode type is as follows:
C 1 4 ×C 1 3 ×C 1 2 ×C 1 1 =24
as shown in fig. 5, the pixel values of 4 pixels in a 2 × 2 pixel block are exchanged to achieve the purpose of scrambling.
4. Obtaining a subkey 3
The one-dimensional Logistic mapping is a typical chaotic mapping, and the model is x n+1 =μx n (1-x n ) When the coefficient is 3.57<When mu is less than or equal to 4, the system enters a chaotic state to generate [0,1 ]]Setting a chaos mapping coefficient as a sub-key 3: (x) 0 μ); wherein mu is a chaotic mapping coefficient in the chaotic mapping process, and x 0 Is an initial value because the result of chaotic mapping depends on
5. Obtaining the chaotic sequence corresponding to the sub-key 3
Chaotic mapping is carried out on the serial number of the scrambling mode in the scrambling mode sequence, so that the corresponding scanning mode sequence in the scrambling mode sequence is more random, the chaotic mapping coefficient subjected to chaotic mapping is used as a sub-secret key 3, and the chaotic mapping wins the iteration of the chaotic mapping coefficient for n times, wherein n is the length of the information sequence, the chaotic sequence with the length of n is obtained, and the chaotic sequence comprises the serial number of the scrambling mode subjected to chaotic mapping.
And combining the sub-key 1, the sub-key 2 and the sub-key 3 obtained in the above steps to obtain the security key.
6. Acquiring information sequence of medical insurance data to be transmitted
Acquiring medical insurance data to be transmitted, converting the medical insurance data into binary data, supplementing (5-L% 5) 0 values behind the binary data with the length of L, wherein the% represents the remainder, dividing the supplemented binary data into information with the length of 5 to form an information sequence, namely the information sequence of the medical insurance data to be transmitted, wherein the length of the information sequence is n = [ L/5], and the [ ] represents the upward rounding.
7. Acquiring encrypted medical insurance data to be transmitted
Converting medical insurance data to be transmitted into a corresponding scanning mode according to the coding mode, assigning values to the 2 x 2 pixel blocks according to the scanning mode, wherein the assignment conditions are different for different scanning modes:
in this embodiment, if the directional scanning mode is: assigning 1,2,3,4 to the pixels in the pixel block according to the pattern corresponding to the scanning mode, such as scanning mode 1 in fig. 4, and assigning the result according to the pattern corresponding to the scanning mode to be pixel block 1;
in this embodiment, if the scanning mode is the equivalent scanning mode: assigning 1,2 respectively to the pixels in the pixel block according to the pattern corresponding to the scanning mode, such as the scanning mode 25 in fig. 4, and assigning the result according to the pattern corresponding to the scanning mode to be the pixel block 2; when the pattern corresponding to the scanning mode is assigned 1,2, as in the scanning mode 29 in fig. 4, the result after the pattern corresponding to the scanning mode is assigned is a pixel block 3.
Scrambling the pixel values in the pixel blocks corresponding to the scanning mode of the medical insurance data to be transmitted according to the scrambling mode sequence and the chaotic sequence, wherein the scrambling method comprises the following steps:
for the ith coding mode in the coding mode sequence of the medical insurance data to be transmitted, the ith numerical value in the chaotic sequence is obtainedl i According to the second in the scrambling scheme sequencel i Scrambling the pixel block of the ith coding mode in the coding mode sequence of the medical insurance data to be transmitted by the scrambling mode;
and acquiring the scanning mode corresponding to the scrambled pixel block, decoding the scanning mode into a corresponding binary number according to the coding mode, and completing encryption of the medical insurance information to be transmitted.
An example of the encryption method is shown in fig. 6.
For example, the following steps are carried out: for the 4 th coding mode in the coding mode sequence of the medical insurance data to be transmitted, obtaining a scanning mode 7 corresponding to the 4 th coding mode, performing pixel block assignment on the scanning mode 7 corresponding to the 4 th coding mode to obtain a pixel block 7 of the 4 th coding mode, obtaining a 4 th numerical value 15 in the chaotic sequence, scrambling pixel values in the pixel block of the 4 th coding mode according to the 15 th scrambling mode of the 4 th numerical value 15 in the scrambling mode sequence to obtain a pixel block 12 after the 4 th coding mode is scrambled, obtaining a scanning mode 8 corresponding to the pixel block 12 after the 4 th coding mode is scrambled, and obtaining a binary number corresponding to the scanning mode 8 according to the anti-coding mode sequence, wherein the binary number is the medical insurance data to be transmitted after the medical insurance data to be transmitted is encrypted.
8. And transmitting and decrypting the encrypted medical insurance data.
The secure key is divided into a sub-key 1, a sub-key 2 and a sub-key 3, the sub-key 1, the sub-key 2 and the sub-key 3 are decrypted according to an AES decryption algorithm, and an encoding mode sequence, a scrambling mode sequence of a pixel block and a chaotic sequence are obtained.
And coding the encrypted information into a corresponding scanning mode according to the coding mode, and assigning the pixel block according to the scanning mode, wherein the assignment mode is the same as the assignment mode during encryption.
Obtaining a corresponding scrambling mode according to the chaotic sequence and the scrambling mode sequence, and restoring the assigned pixel block according to the reverse step of the scrambling mode;
the process of obtaining the corresponding scrambling mode according to the chaos sequence and the scrambling mode sequence is as follows:
for the serial number i of the scanning mode corresponding to the encrypted binary data in the coding mode sequence, acquiring the scrambling mode serial number corresponding to the ith numerical value in the chaotic sequencel i According to the firstl i The inverse scrambling mode of the individual scrambling modes performs inverse scrambling on the pixel values of the pixel blocks corresponding to the scanning modes corresponding to the serial numbers i in the coding mode sequence to obtain pixel blocks after inverse scrambling, and completes restoration of the pixel blocks corresponding to the encrypted binary data.
And (4) decrypting each encrypted information in the encrypted information sequence according to the steps 1 to 3 to obtain restored information, and finally obtaining a restored information sequence, wherein an exemplary decryption method is shown in fig. 7.
By way of example: for the encrypted binary data, obtaining a scanning mode 8 for the binary data pair, obtaining a pixel block 12 corresponding to the scanning mode 8, obtaining a scrambling mode 15 corresponding to the pixel block 12 after scrambling, scrambling the pixel block according to an anti-scrambling mode 21 of the scrambling mode 15 to obtain an anti-scrambled pixel block 7, obtaining a scanning mode corresponding to the anti-scrambled pixel block 7, and obtaining the binary data corresponding to the scanning mode, namely the binary data obtained by decoding the encrypted binary data.
The medical insurance data are encrypted by the encryption method, the encrypted data are transmitted to the medical insurance information management platform, the transmitted information are decrypted by the safety secret key and stored to the medical insurance information management platform, and the safe transmission of the medical insurance data is realized.
Based on the same inventive concept as the method, the embodiment further provides a medical insurance data security transmission system based on data processing, and the medical insurance data security transmission system based on data processing in the embodiment comprises a data conversion unit, a data encryption unit and a data transmission unit, wherein the data conversion unit, the data encryption unit and the data transmission unit are used for obtaining a binary data information sequence composed of all five-digit binary systems by setting the binary system with the five-digit length as described in the embodiment of the medical insurance data security transmission method based on data processing, converting the binary data into a scanning mode, and obtaining a corresponding coding mode sequence according to the obtained scanning mode to obtain a sub-key 1; scrambling the pixel values in the pixel blocks corresponding to each scanning mode in the obtained coding mode sequence to obtain a corresponding scrambling mode sequence in the coding mode sequence, and obtaining a sub-secret key 2 according to the scrambling mode sequence; chaotic mapping is carried out on each scrambling mode in the scrambling mode sequence, and the coefficient of the chaotic mapping is used as a sub-key 3; chaotic mapping is carried out on the chaotic mode sequence according to the sub-key 3 to obtain a chaotic sequence corresponding to the sub-key 3; combining the sub-key 1, the sub-key 2 and the sub-key 3 to obtain a security key; acquiring medical insurance data to be transmitted, and converting the medical insurance data into binary data to obtain a medical insurance data information sequence; encrypting the information sequence of the medical insurance data to be transmitted according to the security key to obtain encrypted medical insurance data; and transmitting and decrypting the encrypted medical insurance data.
In the embodiment of the medical insurance data safety transmission method based on data processing, binary data information sequences consisting of all five-digit binary systems are obtained for the binary systems with the five-digit length, the binary data are converted into scanning modes, and corresponding coding mode sequences are obtained according to the obtained scanning modes to obtain the sub-key 1; scrambling the pixel values in the pixel blocks corresponding to each scanning mode in the obtained coding mode sequence to obtain a corresponding scrambling mode sequence in the coding mode sequence, and obtaining a sub-secret key 2 according to the scrambling mode sequence; carrying out chaotic mapping on each scrambling mode in the scrambling mode sequence, and taking a coefficient of the chaotic mapping as a sub-key 3; carrying out chaotic mapping on the chaotic mode sequence according to the sub-secret key 3 to obtain a chaotic sequence corresponding to the sub-secret key 3; combining the sub-key 1, the sub-key 2 and the sub-key 3 to obtain a security key; acquiring medical insurance data to be transmitted, and converting the medical insurance data into binary data to obtain a medical insurance data information sequence; encrypting the information sequence of the medical insurance data to be transmitted according to the security key to obtain encrypted medical insurance data; the method for transmitting and decrypting the encrypted medical insurance data is explained, and the details are not described herein.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.
Claims (7)
1. The medical insurance data security transmission method based on data processing is characterized by comprising the following steps:
s1: acquiring all subkeys:
s101, obtaining all five-bit binary data to form a binary data information sequence, converting the binary data into scanning patterns to obtain a plurality of coding mode sequences, randomly selecting one coding mode sequence as a subkey 1, wherein the subkey 1 comprises the scanning patterns corresponding to each five-bit binary data, and the scanning patterns contained in the subkey 1 are not repeated;
s102, scrambling pixel values in a pixel block corresponding to each scanning mode in a sub-key 1 to obtain a plurality of scrambling mode sequences, randomly selecting one scrambling mode sequence as a sub-key 2, wherein the sub-key 2 comprises a scrambling mode for the pixel values in the pixel block corresponding to each scanning mode;
s2: encrypting the medical insurance data to be transmitted:
s201, acquiring medical insurance data to be transmitted, converting the medical insurance data into five-digit binary data, and acquiring a coding mode sequence of the medical insurance data to be transmitted according to the sub-secret key 1;
s202, scrambling pixel values in pixel blocks corresponding to the coding mode sequence of the medical insurance data to be transmitted in a scrambling mode of the positions, corresponding to the coding mode sequence of the medical insurance data to be transmitted, in the sub-secret key 2;
s203, acquiring scanning mode sequences corresponding to all the scrambled pixel blocks, and decoding each scanning mode in the scanning mode sequences into binary data by using the corresponding relation between the scanning mode and the binary data in the subkey 1 to obtain an encrypted medical insurance data information sequence to be transmitted;
s3: and transmitting the encrypted medical insurance data to be transmitted, and decrypting the encrypted medical insurance data to be transmitted according to all the sub-keys and the scanning mode sequence.
2. The secure medical insurance data transmission method based on data processing according to claim 1, further comprising:
chaotic mapping is carried out on the obtained sub-secret key 2 to obtain a chaotic sequence, chaotic mapping coefficients are used as a sub-secret key 3, and in the process of encrypting the medical insurance data to be transmitted, a scrambling mode at a position in the chaotic sequence corresponding to a coding mode sequence is obtained to scramble pixel values in pixel blocks of a coding mode in the coding mode sequence of the medical insurance data to be transmitted.
3. The medical insurance data secure transmission method based on data processing according to claim 2, wherein the process of obtaining the scrambling mode of the corresponding position in the coding mode sequence in the chaotic sequence to scramble the pixel values in the pixel blocks of the coding mode in the coding mode sequence of the medical insurance data to be transmitted is as follows:
for the ith coding mode in the coding mode sequence of the medical insurance data to be transmitted, the ith numerical value in the chaotic sequence is obtainedl i According to the second in the scrambling scheme sequencel i And scrambling the pixel values in the pixel block of the ith coding mode in the coding mode sequence of the medical insurance data to be transmitted by the individual scrambling mode.
4. The secure transmission method of medical insurance data based on data processing as claimed in claim 1, wherein the method of converting the binary data into the scan pattern is:
scanning is carried out according to a pixel block with the size of 2 multiplied by 2, 4 pixels are connected by 3 directed line segments in an unrepeated mode according to the relationship from small to large, the directed line segments refer to line segments pointing to the pointed pixels from the pointed pixels according to the direction from small to large of pixel values, the formed pattern is a scanning pattern, the scanning patterns in 32 are obtained in total, and each binary data corresponds to a different scanning pattern.
5. The medical insurance data security transmission method based on data processing according to claim 1, wherein the scrambling mode sequence is obtained as follows:
pixel values of 4 pixel positions in a 2 × 2 pixel block are exchanged once, the order of change of the positions of the pixel values, i.e., the direction of exchange of the pixel values, is used as a scrambling method, and the scrambling methods of each pixel block are combined to obtain a scrambling method sequence, wherein the scrambling methods of the pixel values in each pixel block may be the same or different.
6. The medical insurance data security transmission method based on data processing according to claim 2, wherein the chaos mapping is performed on the obtained sub-key 2 to obtain a chaos sequence, and the method using the chaos mapping coefficient as the sub-key 3 comprises:
chaotic mapping is carried out on the obtained sub-secret key 2 to obtain a chaotic sequence, chaotic domains in the chaotic mapping are multiplied by 24 respectively and rounded to obtain a chaotic domain with a value between [0 and 24], a chaotic mapping coefficient of the chaotic mapping is obtained, and the chaotic mapping coefficient is used as a sub-secret key 3.
7. Medical insurance data security transmission system based on data processing includes: data conversion unit, data encryption unit and data transmission unit, its characterized in that:
a data conversion unit: the system comprises a binary data sequence, a data acquisition unit, a data transmission unit and a data transmission unit, wherein the binary data sequence is used for converting acquired medical insurance data to be transmitted into a binary data sequence with a five-digit length;
a data encryption unit: the system comprises a sub-key 1, a scanning module and a scanning module, wherein the sub-key 1 is used for converting all binary data information sequences with the length of five bits into scanning patterns, and taking an encoding mode sequence corresponding to the scanning patterns as the sub-key 1, and the sub-key 1 comprises the scanning patterns corresponding to each piece of five-bit binary data and serial numbers thereof, and the corresponding scanning patterns are not repeated;
the scrambling module is used for scrambling the pixel values in the pixel blocks corresponding to each scanning mode in the obtained coding mode sequence to obtain a corresponding scrambling mode sequence in the coding mode sequence, and the scrambling mode sequence is used as a sub-secret key 2;
the system is used for converting medical insurance data to be transmitted into binary data to obtain an information sequence of the medical insurance data to be transmitted;
the system is used for encrypting the medical insurance data sequence to be transmitted according to the sub-key 1 and the sub-key 2 to obtain encrypted medical insurance data;
a data transmission unit: and the system is used for transmitting the encrypted medical insurance data and decrypting the encrypted medical insurance data by utilizing the sub-key 1, the sub-key 2 and the anti-coding mode sequence.
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