CN117879789A - Satellite communication message data transmission method based on high-speed encryption - Google Patents
Satellite communication message data transmission method based on high-speed encryption Download PDFInfo
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Abstract
The invention relates to the technical field of data transmission, in particular to a satellite communication message data transmission method based on high-speed encryption, which comprises the steps of collecting atmospheric temperature data to form a meteorological data sequence and dividing the meteorological data sequence into various blocks; acquiring the fluctuation degree of the atmospheric temperature data in each block, and further acquiring the number of the influence blocks of each block; acquiring the influence blocks of each block according to the number of the influence blocks of each block; the influence degree of each block on each influence block is obtained, and the importance degree of each block is further obtained; obtaining the confusion degree of each round of encrypted data of each block, and obtaining the confusion degree change of each round of encrypted data of each block; according to the confusion degree change of each round of encrypted data of each block and the importance degree of each block, the preference degree of each round of encrypted data of each block is obtained, and then the optimal encryption round of each block is obtained and the atmospheric temperature data in each block is encrypted and transmitted; the invention adapts to the optimal encryption round, and improves the encryption efficiency.
Description
Technical Field
The invention relates to the technical field of data transmission, in particular to a satellite communication message data transmission method based on high-speed encryption.
Background
The satellite communication message data refers to characteristic type information or information transmitted through satellite communication, for example, a meteorological satellite transmits meteorological data through satellite communication so as to monitor the meteorological data, and when the meteorological data is transmitted, in order to ensure the integrity of the data, the meteorological data is generally encrypted so as to prevent the data from being tampered in the transmission process, if a receiver receives the tampered data, the tampered part of the data has extremely large difference with other data, so that the receiver can realize that the data has been tampered, and therefore the meteorological data acquired by the meteorological satellite needs to be encrypted.
The encryption algorithm of AES is used for encrypting the meteorological data, but as the traditional AES encryption algorithm generally adopts a fixed encryption round to encrypt the meteorological data, the confusion effect of the meteorological data is continuously increased along with the increase of the encryption round, but the security gain effect of the meteorological data is gradually reduced, and a large amount of unnecessary encryption time is increased by the fixed encryption round.
Disclosure of Invention
In order to solve the problems, the invention provides a satellite communication message data transmission method based on high-speed encryption.
The satellite communication message data transmission method based on high-speed encryption adopts the following technical scheme:
the embodiment of the invention provides a satellite communication message data transmission method based on high-speed encryption, which comprises the following steps:
acquiring atmospheric temperature data to form a meteorological data sequence, and dividing the meteorological data sequence into various blocks;
taking the variance of the atmospheric temperature data in each block as the fluctuation degree of the atmospheric temperature data in each block; acquiring the number of influence blocks of each block according to the fluctuation degree of the atmospheric temperature data in each block; obtaining the influence blocks of each block according to the number of the influence blocks of each block; according to the fluctuation degree of the atmospheric temperature data in each block and the number of the spacing blocks between each block and each influence block, the influence degree of each block on each influence block is obtained; acquiring the importance degree of each block according to the influence degree of each block on each influence block and the fluctuation degree of the atmospheric temperature data in each block;
taking the atmospheric temperature data in each block as the 0 th round of encryption data of each block, carrying out a plurality of rounds of iterative encryption on the atmospheric temperature data in each block to obtain each round of encryption data of each block, and obtaining the confusion degree of each round of encryption data of each block according to the 0 th round of encryption data of each block and the Hamming distance between each round of encryption data; acquiring the confusion degree change of each round of encrypted data of each block according to the confusion degree of each round of encrypted data of each block; obtaining the preference degree of each round of encryption data of each block according to the confusion degree change of each round of encryption data of each block and the importance degree of each block; acquiring the optimal encryption round of each block according to the preference degree of each round of encryption data of each block;
and encrypting and transmitting the atmospheric temperature data in each block according to the optimal encryption round of each block.
Preferably, the obtaining the number of the affected blocks of each block according to the fluctuation degree of the atmospheric temperature data in each block includes the following specific steps:
in the method, in the process of the invention,represents->The number of the influence blocks of the blocks; />Represents->The degree of fluctuation of the atmospheric temperature data in the individual blocks; />Representing a preset first super parameter; />Representing an upward rounding symbol; />Representing a logarithmic function.
Preferably, the step of obtaining the influence block of each block according to the number of the influence blocks of each block includes the following specific steps:
ordering the obtained blocks according to time sequence, and then the first stepPost-individual block->The block is taken as the->Influence block of individual blocks->Represents->The number of blocks is affected by the number of blocks.
Preferably, the step of obtaining the influence degree of each block on each influence block according to the fluctuation degree of the atmospheric temperature data in each block and the number of the spacer blocks between each block and each influence block comprises the following specific steps:
in the method, in the process of the invention,represents->The block is about>The degree of influence of the individual influence blocks; />Represents->The degree of fluctuation of the atmospheric temperature data in the individual blocks; />Represents->The individual blocks are->The number of spacer blocks between the influencing blocks; />Representing a preset second super parameter.
Preferably, the step of obtaining the importance degree of each block according to the influence degree of each block on each influence block and the fluctuation degree of the atmospheric temperature data in each block comprises the following specific steps:
in the method, in the process of the invention,represents->The importance of the individual blocks; />Represents->The degree of fluctuation of the atmospheric temperature data in the individual blocks;representative pair->The>Block pair->The degree of influence of individual blocks; />Representative pair->The number of blocks that each block affects; />Representing a normalization function; />Representing an exponential function based on a natural constant.
Preferably, the obtaining the confusion degree of each round of encrypted data of each block according to the 0 th round of encrypted data of each block and the hamming distance between each round of encrypted data comprises the following specific steps:
will be the firstNo. 5 of individual blocks>The round encrypted data is converted into binary data, denoted as +.>No. 5 of individual blocks>Wheel binary data, will be->No. 5 of individual blocks>Conversion of round encrypted data into binary dataMarked as->No. 5 of individual blocks>Wheel binary data, will beNo. 5 of individual blocks>Wheel binary data and->No. 5 of individual blocks>The sum of Hamming distances of binary data of all corresponding positions in the round binary data is taken as +.>No. 5 of individual blocks>The degree of confusion of the round encrypted data.
Preferably, the obtaining the change of the confusion degree of each round of encrypted data of each block according to the confusion degree of each round of encrypted data of each block comprises the following specific steps:
in the method, in the process of the invention,represents->No. 5 of individual blocks>The degree of confusion of the round encrypted data varies; />Represents->No. 5 of individual blocks>The degree of confusion of the round encrypted data; />Represents->No. 5 of individual blocks>The degree of confusion of the round encrypted data.
Preferably, the obtaining the preferred degree of each round of encrypted data of each block according to the confusion degree change of each round of encrypted data of each block and the importance degree of each block includes the following specific steps:
in the method, in the process of the invention,represents->No. 5 of individual blocks>The degree of preference of the round encrypted data; />Represents->The importance of the individual blocks; />Represents->No. 5 of individual blocks>The degree of confusion of the round encrypted data varies; />Representing a normalization function.
Preferably, the obtaining the optimal encryption round of each block according to the preference degree of each round of encryption data of each block comprises the following specific steps:
presetting a threshold value of the degree of preferenceWhen->First->The optimal encryption round of each block is +.>Secondary times;
when (when)For->The individual blocks are subject to->Round encryption, will->No. 5 of individual blocks>Preference degree and +.>Compare, and so on, untilFirst->No. 5 of individual blocks>The preference degree of the round encryption data is greater than +.>Stop encryption at time->The optimal encryption round of each block is +.>Secondary (S)/(S)>Represents->No. 5 of individual blocks>The preference degree of the round encryption data.
Preferably, the encrypting and transmitting the atmospheric temperature data in each block according to the optimal encrypting round of each block comprises the following specific steps:
and encrypting the atmospheric temperature data in each block by using an AES encryption algorithm according to the optimal encryption round of each block to obtain the encrypted data of each block, and transmitting the encrypted data of all the blocks to a receiver.
The technical scheme of the invention has the beneficial effects that: according to the invention, the acquired atmospheric temperature data are subjected to pre-partitioning treatment, and the number of the influence blocks of each block is obtained according to the fluctuation degree of the atmospheric temperature data in each block, so that the influence block of each block is obtained; according to the fluctuation degree of the atmospheric temperature data in each block and the number of the spacing blocks between each block and each influence block, the influence degree of each block on each influence block is obtained, and the importance degree of each block is further obtained; then taking the atmospheric temperature data in each block as the 0 th round of encryption data of each block, encrypting the atmospheric temperature data in each block by using an AES encryption algorithm to obtain each round of encryption data of each block, and acquiring the confusion degree of each round of encryption data of each block according to the 0 th round of encryption data of each block and the Hamming distance between each round of encryption data, thereby obtaining the confusion degree change of each round of encryption data of each block; and finally, according to the confusion degree change of each round of encrypted data of each block and the importance degree of each block, the optimal encryption round of each block is obtained in a self-adaptive manner, the data is encrypted by using the optimal encryption round of each block, and on the premise of ensuring the data security, the encryption time of the data is greatly saved, and the encryption efficiency is improved.
Drawings
In order to more clearly illustrate the embodiments of the invention or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, it being obvious that the drawings in the following description are only some embodiments of the invention, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
Fig. 1 is a flow chart of steps of a satellite communication message data transmission method based on high-speed encryption.
Detailed Description
In order to further describe the technical means and effects adopted by the present invention to achieve the preset purpose, the following detailed description refers to specific implementation, structure, characteristics and effects of the satellite communication message data transmission method based on high-speed encryption according to the present invention with reference to the accompanying drawings and preferred embodiments. In the following description, different "one embodiment" or "another embodiment" means that the embodiments are not necessarily the same. Furthermore, the particular features, structures, or characteristics of one or more embodiments may be combined in any suitable manner.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs.
The following specifically describes a specific scheme of the satellite communication message data transmission method based on high-speed encryption provided by the invention with reference to the accompanying drawings.
Referring to fig. 1, a flowchart illustrating a method for transmitting satellite communication message data based on high-speed encryption according to an embodiment of the invention is shown, the method includes the following steps:
s001, acquiring atmospheric temperature data to form a meteorological data sequence, and dividing the meteorological data sequence into various blocks.
It should be noted that the purpose of the present invention is to make encrypted transmissions of meteorological data, so that the palm needs to acquire meteorological data, and the meteorological data refer to meteorological condition data about the atmosphere and the earth collected on meteorological satellites, and these data are used for predicting weather, climate and influence on natural environment, and the collected meteorological condition data about the atmosphere and the earth are known to include, but are not limited to, the following aspects: data such as atmospheric temperature, atmospheric humidity, air pressure, wind speed and the like are mainly collected and analyzed in the embodiment of the invention.
In the embodiment of the invention, an infrared radiation sensor is carried on a meteorological satellite to collect atmospheric temperature data, and the preset collection time interval is once collected every 15 minutes.
The invention encrypts the collected atmospheric temperature data by using the AES encryption algorithm, so that the collected atmospheric temperature data needs to be rounded and segmented.
In the embodiment of the invention, the acquired atmospheric temperature data are rounded up and rounded down to form a meteorological data sequence according to a time sequence, and it is required to be noted that the wavelengths of infrared radiation corresponding to different atmospheric temperatures are different, so that the different wavelength radiation measured by the infrared radiation sensor corresponds to different atmospheric temperatures.
Preset intra-segment dataAccording to the time sequence of acquisition, the acquired meteorological data sequence is according to +.>The atmospheric temperature data are divided into each section, if the atmospheric temperature data in the last section are less than 16, the atmospheric temperature data are collected, the collection can be stopped until the atmospheric temperature in the last section meets 16, and the atmospheric temperature data in each section are filled into a side length in sequence>Obtaining each matrix in the matrixes with the sizes, and marking each obtained matrix as each block; it should be noted that each row in the matrix represents four atmospheric temperature data representing each hour, and each matrix represents four consecutive hours of atmospheric temperature data.
Thus, the atmospheric temperature data are collected to form a meteorological data sequence, and the meteorological data sequence is divided into various blocks.
S002, acquiring fluctuation degree of atmospheric temperature data in each block; according to the fluctuation degree of the atmospheric temperature data in each block, the number of the influence blocks of each block is obtained, the influence block of each block is obtained, and the influence degree of each block on each influence block is obtained; and acquiring the importance degree of each block according to the influence degree of each block on each influence block and the fluctuation degree of the atmospheric temperature data in each block.
It should be noted that, if the obtained atmospheric temperature data in each block is the atmospheric temperature data of four continuous hours, if the atmospheric temperature data suddenly changes to be a certain abnormal event, such as rapid development of a weather event, weather disasters, etc., by identifying the change of the atmospheric temperature data, the weather expert can perceive the abnormal situation faster and take measures in time, so for the block with the greater fluctuation degree of the atmospheric temperature data, the important degree is greater, and further, the atmospheric temperature data in each block is caused to fluctuate due to the change condition of the atmospheric temperature data represented by the fluctuation degree of the atmospheric temperature data in four continuous hours, which may be caused by factors such as a cooling and heating period or an air pressure change, etc., the fluctuation degree of the atmospheric temperature data in the following several times is continuously influenced, and the larger the fluctuation degree of the atmospheric temperature data is, i.e. when the fluctuation degree of the atmospheric temperature data in any block is greater, the larger the influence range is caused to the blocks, and when the fluctuation degree of the atmospheric temperature data in any block is greater, the influence the block is firstly influenced by the blocks, the larger the atmospheric temperature data in each block is influenced by the fluctuation degree of the atmospheric temperature data in each block, so that the block is influenced by the atmospheric temperature data in each block.
It should be further noted that, when the fluctuation degree of the atmospheric temperature data in any one block is large, the influence degree of that block on its influence block is large, and when the number of spacers between any one block and any one of its influence blocks is small, the distance between that block and its influence block is small, the influence degree of that block on that influence block is large, so in the present invention, the influence degree of each block on each influence block is obtained according to the fluctuation degree of the atmospheric temperature data in each block and the number of spacers between each block and each influence block.
In the embodiment of the invention, the variance of the atmospheric temperature data in each block is obtained as the fluctuation degree of the atmospheric temperature data in each block;
obtaining the number of influence blocks of each block:
in the method, in the process of the invention,represents->The number of the influence blocks of the blocks; />Represents->In individual blocksThe degree of fluctuation of the atmospheric temperature data; />Representing a preset first super parameter; />Representing an upward rounding symbol; in the embodiment of the invention, a first super parameter is presetIn other embodiments, the practitioner may preset the value of the first super parameter according to the specific implementation; when->The greater the value of (2), the description of +.>The larger the fluctuation of the atmospheric temperature data in the individual blocks, at this time, +.>The more the number of influencing blocks of the blocks; and similarly, obtaining the number of the influence blocks of each block.
Obtaining an influence block of each block: ordering all the obtained blocks according to time sequence to obtain the firstPost-individual block->The block is taken as the->Influence block of individual blocks->Represents->And the number of the influence blocks of each block is similar to the number of the influence blocks of each block, and the influence blocks of each block are obtained.
Obtaining the influence degree of each block on each influence block:
，
in the method, in the process of the invention,represents->The block is about>The degree of influence of the individual influence blocks; />Represents->The degree of fluctuation of the atmospheric temperature data in the individual blocks; />Represents->The individual blocks are->The number of spacers between the influencing blocks, i.e.>The individual blocks are->The distance between the blocks is affected; />Representing a preset second super parameter; in the embodiment of the invention, a second super parameter is presetIn other embodiments, the practitioner can preset +_ according to the specific implementation>Is a value of (2); />Indicate->The block is about>Influence factors of individual influence blocks, +.>The smaller the value of (2) is, the +.>The individual blocks are->The closer the distance between the influencing blocks is, the closer the distance is, the +.>The block is about>The greater the degree of influence of the influencing blocks, in this case +.>The greater the value of (2); when->The greater the value of (2), the description of +.>The larger the fluctuation of the data in the block is, the +.>The block is about>The greater the degree of influence of the individual influence blocks.
It should be noted that each block affects the atmospheric temperature data in a plurality of blocks behind it, and the degree of influence of each block on each affected block is obtained, and as such, there are several blocks affecting each block, when the degree of influence of all the blocks affecting any block on the block is greater, the greater the correlation between all the blocks affecting the block and the atmospheric temperature data in the block is, the greater the degree of importance of the block is; and because the greater the fluctuation degree of the atmospheric temperature data in any block, the greater the importance degree of the block is, the importance degree of each block is obtained by combining the fluctuation degree of the atmospheric temperature data in each block and the influence degree of all blocks influencing each block on the block.
In the embodiment of the invention, the importance degree of each block is obtained:
in the method, in the process of the invention,represents->The importance of the individual blocks; />Represents->The degree of fluctuation of the atmospheric temperature data in the individual blocks;representative pair->The>Block pair->The degree of influence of individual blocks; />Representative pair->The number of blocks that each block affects; />Representing a normalization function, using linear normalization, the normalization object being for each blockIs a value of (2); />Represents an exponential function based on a natural constant; />Representative pair->All blocks influencing the individual blocks are +.>The influence degree of the individual blocks, the greater the influence degree, the description of +.>All blocks whose influence is produced by the individual blocks and +.>The greater the correlation between the atmospheric temperature data in the blocks, the +.>The more important the atmospheric temperature data in the individual blocks is, the +.>The greater the importance of the individual blocks; when->The larger the data fluctuation of the individual blocks, the description of +.>The more important the atmospheric temperature data in the individual blocks is, the +.>The greater the importance of the individual blocks.
So far, acquiring the fluctuation degree of the atmospheric temperature data in each block; according to the fluctuation degree of the atmospheric temperature data in each block, the number of the influence blocks of each block is obtained, the influence block of each block is obtained, and the influence degree of each block on each influence block is obtained; and acquiring the importance degree of each block according to the influence degree of each block on each influence block and the fluctuation degree of the atmospheric temperature data in each block.
S003, obtaining the confusion degree of each round of encrypted data of each block, and further obtaining the confusion degree change condition of each round of encrypted data of each block; acquiring the preference degree of each round of encryption data of each block according to the importance degree of each block and the confusion degree change condition of each round of encryption data of each block; and combining the preset preference degree threshold with the preference degree of each round of encrypted data of each block to acquire the optimal encryption round of each block.
It should be noted that, encryption of atmospheric temperature data using the AES encryption algorithm is a process of continuously obfuscating atmospheric temperature data, as encryption rounds increase, the obfuscating operation of the AES encryption algorithm causes atmospheric temperature data to become more difficult to understand, increasing the difficulty of an attacker to attempt to restore atmospheric temperature data from ciphertext, that is, as encryption rounds increase, the degree of obfuscation of atmospheric temperature data is continuously increasing, but the security gain of atmospheric temperature is continuously decreasing, because encryption of the initial rounds already provides relatively higher security, and as encryption rounds increase, each round of encryption requires more calculation time, therefore, the invention aims to adaptively acquire the optimal encryption rounds of each block, and save the encryption time of data on the premise of guaranteeing the security of data.
It should be further noted that, the confusion operation of the AES encryption algorithm is known to make the difference between the encrypted data and the original data larger, that is, the better the confusion degree of the encrypted data is indicated when the difference is large, and the hamming distance between the two sets of data may reflect the difference between the two sets of data, the larger the hamming distance is indicated the greater the difference between the two sets of data, so the present invention obtains each round of encrypted data of each block by obtaining each round of encrypted data of each block and taking the atmospheric temperature data in each block as the 0 th round of encrypted data of each block, and obtains the confusion degree of each round of encrypted data of each block according to the hamming distance between each round of encrypted data of each block and the 0 th round of encrypted data of each block, and it is known that as the encryption round increases, the confusion degree of each round of encrypted data of each block increases, but the gain of the confusion degree decreases continuously, so the confusion degree of each round of encrypted data of each block is obtained according to the confusion degree of two adjacent rounds of encrypted data of each block.
In the embodiment of the invention, the first is acquiredNo. 5 of individual blocks>Degree of confusion of round encrypted data: will be->Atmospheric temperature data in the individual blocks as +.>No. 5 of individual blocks>Round encryption data, use AES encryption algorithm to +.>Encrypting the atmospheric temperature data in each block to obtain +.>Encrypting data for each round of the block; will be->No. 5 of individual blocks>The round encrypted data is converted into binary data, denoted as +.>No. 5 of individual blocks>Wheel binary data, will be->No. 5 of individual blocks>The round encrypted data is converted into binary data, denoted as +.>No. 5 of individual blocks>Wheel binary data, will be->No. 5 of individual blocks>Wheel binary data and->No. 5 of individual blocks>The sum of Hamming distances of binary data of all corresponding positions in the round binary data is taken as +.>No. 5 of individual blocks>The degree of confusion of the round encrypted data; similarly, the confusion degree of each round of encrypted data of each block is obtained.
Obtaining the confusion degree change of each round of encrypted data of each block:
in the method, in the process of the invention,represents->No. 5 of individual blocks>The degree of confusion of the round encrypted data varies; />Represents->No. 5 of individual blocks>The degree of confusion of the round encrypted data; />Represents->No. 5 of individual blocks>The degree of confusion of the round encrypted data; with the increasing encryption rounds +.>The value of (c) will decrease continuously.
It should be noted that, as the encryption round increases, the confusion degree of each round of encrypted data of each block is known to be continuously increasing, but the gain of the confusion degree is continuously decreasing, that is, the confusion degree of each round of encrypted data of each block is changed, so that it is unnecessary to encrypt the atmospheric temperature data in the block by using more rounds, and the importance degree of each block is obtained in step S002, when the importance degree of a block is greater, the atmospheric temperature in the block is illustrated to be more important, so that when the importance degree of a block is greater, the encryption round of a block needs to be set more, when the importance degree of a block is smaller, the encryption round of a block needs to be set less, so as to achieve the effect of improving the encryption speed and saving the encryption time.
In the embodiment of the invention, the preference degree of each round of encrypted data of each block is acquired:
in the method, in the process of the invention,represents->No. 5 of individual blocks>The degree of preference of the round encrypted data; />Represents->The importance of the individual blocks; />Represents->No. 5 of individual blocks>The degree of confusion of the round encrypted data varies; />Representing a normalization function, using linear normalization, normalized object is +.>The method comprises the steps of carrying out a first treatment on the surface of the With the increasing encryption rounds +.>The value of (2) is continuously decreasing, thus +.>The value of (2) is an increasing process, so with increasing encryption rounds ++>The value of (2) is an increasing process, i.e. from small to large, and therefore when +.>When the value of (2) is smaller, i.e. +.>No. 5 of individual blocks>The preference degree of the round encryption data is lower, indicating +.>The encryption round of each block is small at this time, and the next round of encryption is needed.
Obtaining an optimal encryption round for each block: presetting a threshold value of the degree of preferenceIn the embodiment of the present invention, a threshold value of the degree of preference is preset +.>In other embodiments, the practitioner can set +.>When the value of (1)Description of the->No. 5 of individual blocks>The preference degree of the round encrypted data is too high, at this time +.>The optimal encryption round of each block is +.>Secondary times; when->Description of the->No. 5 of individual blocks>The preferred degree of round encryption of data is too low, the round encryption is too small, thus for the +.>The individual blocks are subject to->Round encryption, get->No. 5 of individual blocks>The degree of preference of the round encrypted data is compared with a threshold degree of preference, and so on, up to +.>No. 5 of individual blocks>The encryption is stopped when the preference degree of the round encrypted data is greater than the preference degree threshold value, at this time +.>The optimal encryption round of each block is +.>Secondary times; and similarly, obtaining the optimal encryption round of each block.
So far, the confusion degree of each round of encrypted data of each block is obtained, and the confusion degree change condition of each round of encrypted data of each block is further obtained; acquiring the preference degree of each round of encryption data of each block according to the importance degree of each block and the confusion degree change condition of each round of encryption data of each block; and combining the preset preference degree threshold with the preference degree of each round of encrypted data of each block to acquire the optimal encryption round of each block.
S004, encrypting and transmitting the atmospheric temperature data in each block according to the optimal encryption round of each block.
In addition, the optimal encryption round of each block is obtained in the step S003, so that the atmospheric temperature data in each block needs to be encrypted according to the optimal encryption round of each block, and the encrypted data is transmitted to the receiving party, so that the receiving party can analyze and process the atmospheric temperature data conveniently.
In the embodiment of the invention, according to the optimal encryption round of each block, the atmospheric temperature data in each block is encrypted by using an AES encryption algorithm to obtain the encrypted data of each block, and the encrypted data of all the blocks are transmitted to a receiver, so that the receiver can conveniently analyze and process the atmospheric temperature data.
To this end, encryption of the atmospheric temperature data in each block is completed according to the optimal encryption round for each block.
The above description is only of the preferred embodiments of the present invention and is not intended to limit the invention, but any modifications, equivalent substitutions, improvements, etc. within the principles of the present invention should be included in the scope of the present invention.
Claims (10)
1. The satellite communication message data transmission method based on high-speed encryption is characterized by comprising the following steps of:
acquiring atmospheric temperature data to form a meteorological data sequence, and dividing the meteorological data sequence into various blocks;
taking the variance of the atmospheric temperature data in each block as the fluctuation degree of the atmospheric temperature data in each block; acquiring the number of influence blocks of each block according to the fluctuation degree of the atmospheric temperature data in each block; obtaining the influence blocks of each block according to the number of the influence blocks of each block; according to the fluctuation degree of the atmospheric temperature data in each block and the number of the spacing blocks between each block and each influence block, the influence degree of each block on each influence block is obtained; acquiring the importance degree of each block according to the influence degree of each block on each influence block and the fluctuation degree of the atmospheric temperature data in each block;
taking the atmospheric temperature data in each block as the 0 th round of encryption data of each block, carrying out a plurality of rounds of iterative encryption on the atmospheric temperature data in each block to obtain each round of encryption data of each block, and obtaining the confusion degree of each round of encryption data of each block according to the 0 th round of encryption data of each block and the Hamming distance between each round of encryption data; acquiring the confusion degree change of each round of encrypted data of each block according to the confusion degree of each round of encrypted data of each block; obtaining the preference degree of each round of encryption data of each block according to the confusion degree change of each round of encryption data of each block and the importance degree of each block; acquiring the optimal encryption round of each block according to the preference degree of each round of encryption data of each block;
and encrypting and transmitting the atmospheric temperature data in each block according to the optimal encryption round of each block.
2. The method for transmitting satellite communication message data based on high-speed encryption according to claim 1, wherein the step of obtaining the number of the affected blocks of each block according to the fluctuation degree of the atmospheric temperature data in each block comprises the following specific steps:
，
in the method, in the process of the invention,represents->The number of the influence blocks of the blocks; />Represents->The degree of fluctuation of the atmospheric temperature data in the individual blocks; />Representing a preset first super parameter; />Representing an upward rounding symbol; />Representing a logarithmic function.
3. The method for transmitting satellite communication message data based on high-speed encryption according to claim 1, wherein the obtaining the influence block of each block according to the number of the influence blocks of each block comprises the following specific steps:
ordering the obtained blocks according to time sequence, and then the first stepPost-individual block->The block is taken as the->Influence block of individual blocks->Represents->The number of blocks is affected by the number of blocks.
4. The method for transmitting satellite communication message data based on high-speed encryption according to claim 1, wherein the step of obtaining the influence degree of each block on each influence block according to the fluctuation degree of the atmospheric temperature data in each block and the number of spacer blocks between each block and each influence block comprises the following specific steps:
，
in the method, in the process of the invention,represents->The block is about>The degree of influence of the individual influence blocks; />Represents->The degree of fluctuation of the atmospheric temperature data in the individual blocks; />Represents->The individual blocks are->The number of spacer blocks between the influencing blocks; />Representing a preset second super parameter.
5. The method for transmitting satellite communication message data based on high-speed encryption according to claim 1, wherein the step of obtaining the importance level of each block according to the influence level of each block on each influence block and the fluctuation level of the atmospheric temperature data in each block comprises the following specific steps:
，
in the method, in the process of the invention,represents->The importance of the individual blocks; />Represents->The degree of fluctuation of the atmospheric temperature data in the individual blocks; />Representative pair->The>Block pair->The degree of influence of individual blocks; />Representative pair->The number of blocks that each block affects; />Representing a normalization function; />Representing an exponential function based on a natural constant.
6. The method for transmitting satellite communication message data based on high-speed encryption according to claim 1, wherein the step of obtaining the confusion degree of each round of encrypted data of each block according to the 0 th round of encrypted data of each block and the hamming distance between each round of encrypted data comprises the following specific steps:
will be the firstNo. 5 of individual blocks>The round encrypted data is converted into binary data, denoted as +.>No. 5 of individual blocks>Wheel binary data, will be->No. 5 of individual blocks>The round encrypted data is converted into binary data, denoted as +.>No. 5 of individual blocks>Wheel binary data, will be->No. 5 of individual blocks>Wheel binary data and->No. 5 of individual blocks>The sum of Hamming distances of binary data of all corresponding positions in the round binary data is taken as +.>No. 5 of individual blocks>The degree of confusion of the round encrypted data.
7. The method for transmitting satellite communication message data based on high-speed encryption according to claim 1, wherein the step of obtaining the change of the confusion degree of each round of encrypted data of each block according to the confusion degree of each round of encrypted data of each block comprises the following specific steps:
，
in the method, in the process of the invention,represents->No. 5 of individual blocks>The degree of confusion of the round encrypted data varies; />Represents->No. 5 of individual blocks>The degree of confusion of the round encrypted data; />Represents->No. 5 of individual blocks>The degree of confusion of the round encrypted data.
8. The method for transmitting satellite communication message data based on high-speed encryption according to claim 1, wherein the obtaining the preference degree of each round of encrypted data of each block according to the confusion degree change of each round of encrypted data of each block and the importance degree of each block comprises the following specific steps:
，
in the method, in the process of the invention,represents->No. 5 of individual blocks>The degree of preference of the round encrypted data; />Represents->The importance of the individual blocks; />Represents->No. 5 of individual blocks>The degree of confusion of the round encrypted data varies; />Representing a normalization function.
9. The method for transmitting satellite communication message data based on high-speed encryption according to claim 1, wherein the obtaining the optimal encryption round of each block according to the preference degree of each round of encryption data of each block comprises the following specific steps:
presetting a threshold value of the degree of preferenceWhen->First->The optimal encryption round of each block is +.>Secondary times;
when (when)For->The individual blocks are subject to->Round encryption, will->No. 5 of individual blocks>Preference degree and +.>Comparison, and so on, up to +.>No. 5 of individual blocks>The preference degree of the round encryption data is greater than +.>Stop encryption at time->The optimal encryption round of each block is +.>Secondary (S)/(S)>Represents->No. 5 of individual blocks>The preference degree of the round encryption data.
10. The method for transmitting satellite communication message data based on high-speed encryption according to claim 1, wherein the encrypting and transmitting the atmospheric temperature data in each block according to the optimal encryption round of each block comprises the following specific steps:
and encrypting the atmospheric temperature data in each block by using an AES encryption algorithm according to the optimal encryption round of each block to obtain the encrypted data of each block, and transmitting the encrypted data of all the blocks to a receiver.
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