CN117792614B - High-speed encryption method for end-to-end satellite communication data - Google Patents
High-speed encryption method for end-to-end satellite communication data Download PDFInfo
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Abstract
The invention relates to the technical field of data transmission, in particular to a high-speed encryption method for end-to-end satellite communication data, which comprises the following steps: collecting a reference temperature communication data sequence; obtaining a reference temperature communication data segment according to the reference temperature communication data sequence; obtaining local deviation degree and local deviation factor according to the reference temperature communication data segment; obtaining local weighted offset degree according to the local offset degree and the local offset factor; obtaining normal reference temperature communication data according to the local weighted offset; clustering the normal reference temperature communication data to obtain a cluster; obtaining the local information richness according to the cluster; obtaining optimal encryption rounds according to the information content in the local information richness; and carrying out encryption transmission on the reference temperature communication data sequence according to the optimal encryption round. The invention reduces the cost of data encryption and improves the data transmission efficiency.
Description
Technical Field
The invention relates to the technical field of data transmission, in particular to a high-speed encryption method for end-to-end satellite communication data.
Background
The process of transmitting data from the ground user terminal to the receiving end of the satellite and then from the transmitting end of the satellite to the ground receiving end is an end-to-end satellite communication data process; in the process of satellite data transmission, in order to ensure the security of the data, the data needs to be encrypted. The data is encrypted in a fixed round by an AES encryption algorithm, but the data collected by a ground user terminal in different time periods has different change conditions due to the influence of a collection environment, so that the data coverage information amount in different time periods is also different, and the optimal encryption round of the data in different time periods is also different; and the data in all time periods are encrypted in a fixed round through the traditional method, so that the cost of data encryption is increased, and the data transmission efficiency is reduced.
Disclosure of Invention
The invention provides a high-speed encryption method for end-to-end satellite communication data, which aims to solve the existing problems: the data coverage information amount is different in different time, the corresponding optimal encryption rounds are different, the data is encrypted in a fixed round by the traditional AES encryption algorithm, the data encryption cost is increased, and the data transmission efficiency is reduced.
The invention discloses a high-speed encryption method for end-to-end satellite communication data, which adopts the following technical scheme:
the method comprises the following steps:
collecting a plurality of reference temperature communication data sequences, wherein the reference temperature communication data sequences comprise a plurality of reference temperature communication data;
Carrying out quantity division on the reference temperature communication data sequence to obtain a plurality of reference temperature communication data segments; obtaining the local deviation degree of each reference temperature communication data according to the numerical value difference between the reference temperature communication data in the reference temperature communication data segment; obtaining a local deviation factor of each reference temperature communication data according to the numerical value difference between the reference temperature communication data of the same position among different reference temperature communication data segments; obtaining a local weighted offset degree of each reference temperature communication data according to the local offset degree and the local offset factor, wherein the local weighted offset degree is used for describing the probability that the reference temperature communication data belong to abnormal reference temperature communication data; screening a plurality of normal reference temperature communication data from the reference temperature communication data sequence according to the local weighted offset degree;
Clustering the normal reference temperature communication data to obtain a plurality of clusters; obtaining a plurality of local information richness according to the difference of the quantity ratio of the normal reference temperature communication data contained between the cluster and the reference temperature communication data sequence; obtaining optimal encryption rounds of each reference temperature communication data sequence according to the information content in the local information richness; and carrying out encryption transmission on the reference temperature communication data sequence according to the optimal encryption round.
Preferably, the number of the reference temperature communication data sequences is divided to obtain a plurality of reference temperature communication data segments, which comprises the following specific steps:
Presetting a reference temperature communication data quantity T1; for any one reference temperature communication data sequence, the first reference temperature communication data in the reference temperature communication data sequence is taken as a starting point, and a data segment formed by every T1 reference temperature communication data is taken as one reference temperature communication data segment.
Preferably, the obtaining the local deviation degree of each reference temperature communication data according to the numerical value difference between the reference temperature communication data in the reference temperature communication data segment includes the following specific methods:
in the method, in the process of the invention, Representing an initial local deviation degree of any one of the reference temperature communication data in any one of the reference temperature communication data segments in any one of the reference temperature communication data sequences; /(I)Representing reference temperature communication data; /(I)Representing the average value of all the reference temperature communication data in the reference temperature communication data segment; /(I)Representing standard deviations of all reference temperature communication data in the reference temperature communication data segment; /(I)Representing preset super parameters; /(I)The representation takes absolute value; obtaining initial local deviation degrees of all reference temperature communication data in the reference temperature communication data segment, carrying out linear normalization on all initial local deviation degrees, and recording each normalized initial local deviation degree as a local deviation degree.
Preferably, the local deviation factor of each reference temperature communication data is obtained according to the numerical value difference between the reference temperature communication data at the same position between different reference temperature communication data segments, and the specific method comprises the following steps:
in the method, in the process of the invention, Representing the/>, within any one reference temperature communication data sequenceThe/>, in the reference temperature communication data segmentInitial local deviation factors for the individual reference temperature communication data; /(I)Representing the/>, within the reference temperature communication data sequenceThe/>, in the reference temperature communication data segmentCommunicating data with a plurality of reference temperatures; /(I)Representing the/>, of all reference temperature communication data segments within a reference temperature communication data sequenceAverage value of the communication data of the reference temperature; /(I)Representing the number of all reference temperature communication data segments within the reference temperature communication data sequence; /(I)The representation takes absolute value; and acquiring initial local deviation factors of all reference temperature communication data in all reference temperature communication data segments in the reference temperature communication data sequence, carrying out linear normalization on all the initial local deviation factors, and marking each normalized initial local deviation factor as a local deviation factor.
Preferably, the local weighted offset degree of each reference temperature communication data is obtained according to the local offset degree and the local offset factor, and the specific method comprises the following steps:
in the method, in the process of the invention, Representing an initial local weighted offset degree of any one of the reference temperature communication data in any one of the reference temperature communication data segments in any one of the reference temperature communication data sequences; /(I)Representing the local degree of deviation of the reference temperature communication data; /(I)A local deviation factor representing the reference temperature communication data; /(I)Representing standard deviations of all reference temperature communication data in the reference temperature communication data segment; /(I)Standard deviations of all comparative temperature communication data representing the reference temperature communication data; obtaining initial local weighted offset degrees of all reference temperature communication data in all reference temperature communication data segments in a reference temperature communication data sequence, carrying out linear normalization on all initial local weighted offset degrees, and marking the normalized initial local weighted offset degrees as local weighted offset degrees.
Preferably, the method for screening out a plurality of normal reference temperature communication data from the reference temperature communication data sequence according to the local weighted offset degree includes the following specific steps:
presetting a local weighted offset degree threshold T2; for any one of the reference temperature communication data sequences, reference temperature communication data with a local weighted shift degree smaller than T2 is recorded as normal reference temperature communication data in the reference temperature communication data sequence.
Preferably, the clustering of the normal reference temperature communication data is performed to obtain a plurality of clusters, which comprises the following specific methods:
And for any one reference temperature communication data sequence, clustering all normal reference temperature communication data in the reference temperature communication data sequence by using an ISODATA clustering algorithm to obtain a plurality of clusters.
Preferably, the method for obtaining a plurality of local information richness according to the difference of the number of the normal reference temperature communication data contained between the cluster and the reference temperature communication data sequence includes the following specific steps:
For any one cluster, the quantity of all normal reference temperature communication data in the cluster is recorded as cluster data quantity, the quantity of all reference temperature communication data in the reference temperature communication data sequence is recorded as integral data quantity, and the ratio of the cluster data quantity to the integral data quantity is used as the local information richness of the reference temperature communication data sequence.
Preferably, the optimal encryption round of each reference temperature communication data sequence is obtained according to the information content in the local information richness, and the specific method comprises the following steps:
Obtaining information entropy of local information richness of all reference temperature communication data sequences, carrying out linear normalization on all the information entropy, and marking each normalized information entropy as a sequence information quantity;
in the method, in the process of the invention, Representing an optimal encryption round of any one reference temperature communication data sequence; /(I)Representing preset super parameters; /(I)A sequence information amount indicating a local information richness of the reference temperature communication data sequence; /(I)Representing an upward rounding.
Preferably, the encrypting transmission is performed on the reference temperature communication data sequence according to the optimal encrypting round, and the specific method comprises the following steps:
For any one reference temperature communication data sequence, taking the optimal encryption round of the reference temperature communication data sequence as an encryption round, and performing AES encryption on all normal reference temperature communication data in the reference temperature communication data sequence according to the encryption round to obtain a plurality of ciphertext data and corresponding keys; the ciphertext data and the corresponding secret key are transmitted to a receiving end of the satellite, and then transmitted to a ground receiving end from a transmitting end of the satellite.
The technical scheme of the invention has the beneficial effects that: obtaining local deviation degree and local deviation factor of the reference temperature communication data according to the reference temperature communication data sequence, obtaining local weighted deviation degree according to the local deviation degree and the local deviation factor, obtaining normal reference communication data according to the local weighted deviation degree, clustering the normal reference temperature communication data to obtain a cluster, obtaining local information richness according to the cluster and the normal reference communication data, obtaining optimal encryption round according to the local information richness, and carrying out encryption transmission on the reference temperature communication data sequence according to the optimal encryption round; the local weighted offset degree reflects the probability that the reference temperature communication data belong to abnormal reference temperature communication data, and the local information richness reflects the difference of information content between the integral reference temperature communication data sequences corresponding to the clusters; the cost of data encryption is reduced, and the data transmission efficiency is improved.
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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 the steps of a method for encrypting end-to-end satellite communication data at high speed according to the present invention.
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 embodiments, structures, features and effects of an end-to-end satellite communication data high-speed encryption method 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 end-to-end satellite communication data high-speed encryption method provided by the invention with reference to the accompanying drawings.
Referring to fig. 1, a flowchart illustrating a method for encrypting end-to-end satellite communication data at a high speed according to an embodiment of the invention is shown, the method includes the following steps:
Step S001: a plurality of reference temperature communication data sequences are collected.
It should be noted that, in the conventional method, the AES encryption algorithm is used to encrypt the data in fixed rounds, but because the data collected by the ground user terminal in different time periods has different changes due to the influence of the collecting environment, the data coverage information amount in different time periods is different, and the optimal encryption rounds of the data in different time periods are also different; and the data in all time periods are encrypted in a fixed round through the traditional method, so that the cost of data encryption is increased, and the data transmission efficiency is reduced. For this reason, the present embodiment proposes a high-speed encryption method for end-to-end satellite communication data.
Specifically, in order to implement the end-to-end satellite communication data high-speed encryption method provided in this embodiment, this embodiment is not described with respect to a certain data, such as temperature communication data of meteorological data, and the specific process of acquiring a temperature communication data sequence is as follows: and acquiring temperature communication data recorded in the last week in a database of the weather observation station, rounding and rounding each temperature communication data, marking the rounded result as reference temperature communication data, arranging the reference temperature communication data recorded every day according to the sequence of the recording time from small to large, and marking the arranged sequence as a reference temperature communication data sequence. Wherein each reference temperature communication data sequence corresponds to a day of recorded temperature communication data.
So far, a plurality of reference temperature communication data sequences are obtained through the method.
Step S002: carrying out quantity division on the reference temperature communication data sequence to obtain a reference temperature communication data segment; obtaining the local deviation degree of the reference temperature communication data according to the numerical value difference between the reference temperature communication data in the reference temperature communication data segment; obtaining local deviation factors of the reference temperature communication data according to the numerical value difference between the reference temperature communication data of the same position among different reference temperature communication data segments; obtaining the local weighted offset degree of the reference temperature communication data according to the local offset degree and the local offset factor; and screening normal reference temperature communication data from the reference temperature communication data sequence according to the local weighted offset degree.
It should be noted that, since the data collected in different time periods have different changes due to the influence of the collecting environment, the data coverage information amount in different time periods is also different; in general, for any time period, the more the information amount covered by the data in the time period is, the more the useful information in the time period is relatively, the greater the importance degree of the data in the time period is reflected, and the more the safety of the data in the time period is required to be ensured; therefore, in this embodiment, all data are clustered by using the ISODATA algorithm to obtain a plurality of clusters, and an optimal encryption round of the data in a corresponding time period is determined according to the information range degree included between different clusters, so that encryption transmission is performed according to the optimal encryption round.
It should be further noted that, because the collected data has different change conditions due to the influence of the collection environment, the data before and after the junction of the collection environment change has larger difference due to the mutation of the environment, abnormal data may exist, and the information covered by the abnormal data is not useful information; in the process of finally obtaining the optimal encryption round by using the traditional ISODATA clustering algorithm, abnormal data are forced to be classified into a certain cluster, so that the accuracy of classifying the data is reduced, the rationality of the optimal encryption round is interfered, and the efficiency of data transmission is further reduced. Therefore, the local deviation degree and the local deviation factor of the data are obtained by analyzing the change condition of the data in different time periods, the local weighted deviation degree of the data is obtained according to the local deviation degree and the local deviation factor, and the normal data are determined according to the local weighted deviation degree so as to be convenient for subsequent analysis and processing.
Specifically, a reference temperature communication data amount T1 is preset, where the embodiment is described by taking t1=16 as an example, and the embodiment is not specifically limited, where T1 may be determined according to the specific implementation situation; taking any one reference temperature communication data sequence as an example, taking the first reference temperature communication data in the reference temperature communication data sequence as a starting point, taking a data segment formed by every T1 reference temperature communication data as a reference temperature communication data segment, and acquiring all the reference temperature communication data segments in the reference temperature communication data sequence. If the remaining reference temperature communication data does not meet the preset T1, then 0 is added after the remaining reference temperature communication data until the number of the remaining reference temperature communication data meets the preset T1, and the data segment formed by the remaining reference temperature communication data at this time is taken as a reference temperature communication data segment.
Further, taking any one reference temperature communication data in any one reference temperature communication data segment in the reference temperature communication data sequence as an example, according to the difference between the reference temperature communication data in the reference temperature communication data segment and other reference temperature communication data, the initial local deviation degree of the reference temperature communication data is obtained. The method for calculating the initial local deviation degree of the reference temperature communication data comprises the following steps:
in the method, in the process of the invention, Representing an initial local degree of deviation of the reference temperature communication data; /(I)Representing the reference temperature communication data; /(I)Representing the average value of all the reference temperature communication data in the reference temperature communication data segment; /(I)Representing standard deviations of all reference temperature communication data in the reference temperature communication data segment; /(I)Representing preset super parameters, preset in this embodimentFor preventing denominator from being 0; /(I)The representation takes absolute value. Wherein if the initial local deviation degree of the reference temperature communication data is larger, the reference temperature communication data is larger than the reference temperature communication data in the reference temperature communication data section, and the reference temperature communication data is reflected to be abnormal in the reference temperature communication data section. And obtaining initial local deviation degrees of all the reference temperature communication data in the reference temperature communication data segment, carrying out linear normalization on all the initial local deviation degrees, and recording each normalized initial local deviation degree as a local deviation degree.
Further, the reference temperature is used for communicating the first in the data sequenceThe/>, in the reference temperature communication data segmentFor example, the number of the reference temperature communication data segments in the reference temperature communication data sequence is used to obtain the/>, of the reference temperature communication data sequenceThe/>, in the reference temperature communication data segmentAn initial local deviation factor of the reference temperature communication data. Wherein the reference temperature communicates the first/>, within the data sequenceThe/>, in the reference temperature communication data segmentThe calculation method of the initial local deviation factor of the reference temperature communication data comprises the following steps:
in the method, in the process of the invention, Indicating the/>, within the reference temperature communication data sequenceThe/>, in the reference temperature communication data segmentInitial local deviation factors for the individual reference temperature communication data; /(I)Indicating the/>, within the reference temperature communication data sequenceThe/>, in the reference temperature communication data segmentCommunicating data with a plurality of reference temperatures; /(I)Indicating the/>, of all reference temperature communication data segments within the reference temperature communication data sequenceAverage value of the communication data of the reference temperature; /(I)Representing a number of all reference temperature communication data segments within the reference temperature communication data sequence; /(I)The representation takes absolute value. Wherein if the reference temperature communicates the first/>, within the data sequenceThe/>, in the reference temperature communication data segmentThe greater the initial local deviation factor of the reference temperature communication data, the more/>, is indicative of the sequence of reference temperature communication dataThe/>, in the reference temperature communication data segmentThe larger the difference between the reference temperature communication data and the whole reference temperature communication data acquired at the same time every day is, the more the difference is, the more the reference temperature communication data is reflected in the reference temperature communication data sequenceThe/>, in the reference temperature communication data segmentThe more likely that anomalies are present in the individual reference temperature communication data. Acquiring the/>, within the reference temperature communication data sequenceInitial local deviation factors of all reference temperature communication data in all reference temperature communication data segments in the reference temperature communication data sequence are obtained, the initial local deviation factors of all reference temperature communication data in all reference temperature communication data segments in the reference temperature communication data sequence are subjected to linear normalization, and each normalized initial local deviation factor is recorded as a local deviation factor.
Further, taking any one of the reference temperature communication data segments in any one of the reference temperature communication data sequences as an example, in the reference temperature communication data segments, reference temperature communication data other than the reference temperature communication data is recorded as comparison temperature communication data of the reference temperature communication data; and obtaining the initial local weighted offset degree of the reference temperature communication data according to the comparison temperature communication data of the reference temperature communication data, the local offset degree of the reference temperature communication data and the local offset factor. The method for calculating the initial local weighted offset degree of the reference temperature communication data comprises the following steps:
in the method, in the process of the invention, Representing an initial local weighted shift level of the reference temperature communication data; /(I)Indicating the degree of local deviation of the reference temperature communication data; /(I)A local deviation factor representing the reference temperature communication data; /(I)Representing standard deviations of all reference temperature communication data in the reference temperature communication data segment; /(I)Representing standard deviations of all comparative temperature communication data of the reference temperature communication data. Wherein the greater the initial local weighted offset of the reference temperature communication data, the more likely the reference temperature communication data is abnormal data after comprehensive judgment. Obtaining initial local weighted offset degrees of all reference temperature communication data in all reference temperature communication data segments in the reference temperature communication data sequence, carrying out linear normalization on all initial local weighted offset degrees, and marking the normalized initial local weighted offset degrees as local weighted offset degrees.
Further, a local weighted offset threshold T2 is preset, where the embodiment is described by taking t2=0.8 as an example, and the embodiment is not specifically limited, where T2 may be determined according to the specific implementation situation; taking any reference temperature communication data sequence as an example, in the reference temperature communication data sequence, reference temperature communication data with local weighted deviation degree smaller than T2 is recorded as normal reference temperature communication data; and acquiring all normal reference temperature communication data in all reference temperature communication data sequences.
So far, all normal reference temperature communication data in all reference temperature communication data sequences are obtained through the method.
Step S003: clustering the normal reference temperature communication data to obtain a cluster; obtaining the local information richness according to the difference of the quantity ratio of the normal reference temperature communication data contained between the cluster and the reference temperature communication data sequence; obtaining the optimal encryption round of the reference temperature communication data sequence according to the information content in the local information richness; and carrying out encryption transmission on the reference temperature communication data sequence according to the optimal encryption round.
After determining normal data, the clusters obtained by performing ISODATA clustering on the normal data are all clusters containing a large amount of useful information, and in this embodiment, the sequence information of the clusters is obtained according to the difference of the data amounts contained between the clusters, the corresponding optimal encryption round is obtained according to the sequence information, and the data is encrypted and transmitted according to the optimal encryption round.
Specifically, taking any reference temperature communication data sequence as an example, clustering all normal reference temperature communication data in the reference temperature communication data sequence by using an ISODATA clustering algorithm to obtain a plurality of clusters; taking any one cluster as an example, recording the quantity of all normal reference temperature communication data in the cluster as a cluster data quantity, recording the quantity of all reference temperature communication data in the reference temperature communication data sequence as a whole data quantity, and taking the ratio of the cluster data quantity to the whole data quantity as a local information richness of the reference temperature communication data sequence; obtaining the information entropy of the local information richness of the reference temperature communication data sequence, obtaining the information entropy of the local information richness of all the reference temperature communication data sequences, carrying out linear normalization on all the information entropy, and marking each normalized information entropy as a sequence information amount. Wherein each reference temperature communication data sequence corresponds to a plurality of clusters; the initial cluster center number k and the maximum iteration number M need to be preset by using the isadata clustering algorithm, where in this embodiment, k=6 and m=15 are described as an example, and the present embodiment is not limited specifically, where k and M may be determined according to specific implementation situations. In addition, it should be noted that the information entropy is obtained by a known method, and the isadata clustering algorithm is a known technique, which is not described in detail in this embodiment.
Further, taking any one reference temperature communication data sequence as an example, according to the sequence information quantity of the local information richness of the reference temperature communication data sequence, the optimal encryption round of the reference temperature communication data sequence is obtained. The calculation method of the optimal encryption round of the reference temperature communication data sequence comprises the following steps:
in the method, in the process of the invention, Representing an optimal encryption round of the reference temperature communication data sequence; /(I)Representing preset hyper-parameters, preset/>, in this embodimentThe system is used for representing a preset fixed encryption round; /(I)A sequence information amount indicating a local information richness of the reference temperature communication data sequence; /(I)Representing an upward rounding. And if the optimal encryption round of the reference temperature communication data sequence is larger, the more important information contained in the reference temperature communication data sequence is indicated, and the more important information is reflected, the data security of the reference temperature communication data sequence is required to be ensured.
Further, taking the optimal encryption round of the reference temperature communication data sequence as an encryption round, and performing AES (advanced encryption standard) encryption on all normal reference temperature communication data in the reference temperature communication data sequence according to the encryption round to obtain a plurality of ciphertext data and corresponding keys; the ciphertext data and the corresponding secret key are transmitted to a receiving end of the satellite, and then transmitted to a ground receiving end from a transmitting end of the satellite; and then, when the reference temperature communication data in the reference temperature communication data sequence needs to be analyzed, decrypting according to the ciphertext data and the corresponding secret key. The process of encrypting the data according to the encryption round, the process of obtaining the key corresponding to the ciphertext data, and the process of decrypting the ciphertext data according to the key are all well known contents of the AES encryption algorithm, and are not described in detail in this embodiment.
This embodiment is completed.
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 (7)
1. A method for high-speed encryption of end-to-end satellite communication data, the method comprising the steps of:
collecting a plurality of reference temperature communication data sequences, wherein the reference temperature communication data sequences comprise a plurality of reference temperature communication data;
Carrying out quantity division on the reference temperature communication data sequence to obtain a plurality of reference temperature communication data segments; obtaining the local deviation degree of each reference temperature communication data according to the numerical value difference between the reference temperature communication data in the reference temperature communication data segment; obtaining a local deviation factor of each reference temperature communication data according to the numerical value difference between the reference temperature communication data of the same position among different reference temperature communication data segments; obtaining a local weighted offset degree of each reference temperature communication data according to the local offset degree and the local offset factor, wherein the local weighted offset degree is used for describing the probability that the reference temperature communication data belong to abnormal reference temperature communication data; screening a plurality of normal reference temperature communication data from the reference temperature communication data sequence according to the local weighted offset degree;
Obtaining the local deviation degree of each reference temperature communication data according to the numerical value difference between the reference temperature communication data in the reference temperature communication data segment, comprising the following specific methods:
，
in the method, in the process of the invention, Representing an initial local deviation degree of any one of the reference temperature communication data in any one of the reference temperature communication data segments in any one of the reference temperature communication data sequences; /(I)Representing reference temperature communication data; /(I)Representing the average value of all the reference temperature communication data in the reference temperature communication data segment; /(I)Representing standard deviations of all reference temperature communication data in the reference temperature communication data segment; /(I)Representing preset super parameters; /(I)The representation takes absolute value; obtaining initial local deviation degrees of all reference temperature communication data in a reference temperature communication data segment, carrying out linear normalization on all initial local deviation degrees, and recording each normalized initial local deviation degree as a local deviation degree;
the local deviation factor of each reference temperature communication data is obtained according to the numerical value difference between the reference temperature communication data of the same position between different reference temperature communication data segments, and the specific method comprises the following steps:
，
in the method, in the process of the invention, Representing the/>, within any one reference temperature communication data sequenceThe/>, in the reference temperature communication data segmentInitial local deviation factors for the individual reference temperature communication data; /(I)Representing the/>, within the reference temperature communication data sequenceThe/>, in the reference temperature communication data segmentCommunicating data with a plurality of reference temperatures; /(I)Representing the/>, of all reference temperature communication data segments within a reference temperature communication data sequenceAverage value of the communication data of the reference temperature; /(I)Representing the number of all reference temperature communication data segments within the reference temperature communication data sequence; /(I)The representation takes absolute value; acquiring initial local deviation factors of all reference temperature communication data in all reference temperature communication data segments in a reference temperature communication data sequence, carrying out linear normalization on all the initial local deviation factors, and marking each normalized initial local deviation factor as a local deviation factor;
The local weighted offset degree of each reference temperature communication data is obtained according to the local offset degree and the local offset factor, and the specific method comprises the following steps: In the above, the ratio of/> Representing an initial local weighted offset degree of any one of the reference temperature communication data in any one of the reference temperature communication data segments in any one of the reference temperature communication data sequences; /(I)Representing the local degree of deviation of the reference temperature communication data; /(I)A local deviation factor representing the reference temperature communication data; /(I)Representing standard deviations of all reference temperature communication data in the reference temperature communication data segment; /(I)Standard deviations of all comparative temperature communication data representing the reference temperature communication data; acquiring initial local weighted offset degrees of all reference temperature communication data in all reference temperature communication data segments in a reference temperature communication data sequence, carrying out linear normalization on all initial local weighted offset degrees, and marking the normalized initial local weighted offset degrees as local weighted offset degrees;
Clustering the normal reference temperature communication data to obtain a plurality of clusters; obtaining a plurality of local information richness according to the difference of the quantity ratio of the normal reference temperature communication data contained between the cluster and the reference temperature communication data sequence; obtaining optimal encryption rounds of each reference temperature communication data sequence according to the information content in the local information richness; and carrying out encryption transmission on the reference temperature communication data sequence according to the optimal encryption round.
2. The method for encrypting end-to-end satellite communication data at high speed according to claim 1, wherein said dividing the reference temperature communication data sequence into a plurality of reference temperature communication data segments comprises the following steps:
Presetting a reference temperature communication data quantity T1; for any one reference temperature communication data sequence, the first reference temperature communication data in the reference temperature communication data sequence is taken as a starting point, and a data segment formed by every T1 reference temperature communication data is taken as one reference temperature communication data segment.
3. The method for encrypting end-to-end satellite communication data at high speed according to claim 1, wherein said selecting a plurality of normal reference temperature communication data from a sequence of reference temperature communication data according to the degree of local weighted offset comprises the specific steps of:
presetting a local weighted offset degree threshold T2; for any one of the reference temperature communication data sequences, reference temperature communication data with a local weighted shift degree smaller than T2 is recorded as normal reference temperature communication data in the reference temperature communication data sequence.
4. The method for encrypting the end-to-end satellite communication data at high speed according to claim 1, wherein the clustering of the normal reference temperature communication data to obtain a plurality of clusters comprises the following specific steps:
And for any one reference temperature communication data sequence, clustering all normal reference temperature communication data in the reference temperature communication data sequence by using an ISODATA clustering algorithm to obtain a plurality of clusters.
5. The method for encrypting end-to-end satellite communication data according to claim 1, wherein the obtaining a plurality of local information richness according to the difference of the number of normal reference temperature communication data contained between the cluster and the reference temperature communication data sequence comprises the following specific steps:
For any one cluster, the quantity of all normal reference temperature communication data in the cluster is recorded as cluster data quantity, the quantity of all reference temperature communication data in the reference temperature communication data sequence is recorded as integral data quantity, and the ratio of the cluster data quantity to the integral data quantity is used as the local information richness of the reference temperature communication data sequence.
6. The method for encrypting the end-to-end satellite communication data at a high speed according to claim 1, wherein the obtaining the optimal encryption round of each reference temperature communication data sequence according to the information content in the local information richness comprises the following specific steps:
Obtaining information entropy of local information richness of all reference temperature communication data sequences, carrying out linear normalization on all the information entropy, and marking each normalized information entropy as a sequence information quantity;
,
in the method, in the process of the invention, Representing an optimal encryption round of any one reference temperature communication data sequence; /(I)Representing preset super parameters; a sequence information amount indicating a local information richness of the reference temperature communication data sequence; /(I) Representing an upward rounding.
7. The method for encrypting the end-to-end satellite communication data according to claim 1, wherein the encrypting and transmitting the reference temperature communication data sequence according to the optimal encryption round comprises the following specific steps:
For any one reference temperature communication data sequence, taking the optimal encryption round of the reference temperature communication data sequence as an encryption round, and performing AES encryption on all normal reference temperature communication data in the reference temperature communication data sequence according to the encryption round to obtain a plurality of ciphertext data and corresponding keys; the ciphertext data and the corresponding secret key are transmitted to a receiving end of the satellite, and then transmitted to a ground receiving end from a transmitting end of the satellite.
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