CN114553362A - Satellite data encryption method and terminal equipment - Google Patents
Satellite data encryption method and terminal equipment Download PDFInfo
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- CN114553362A CN114553362A CN202011331102.3A CN202011331102A CN114553362A CN 114553362 A CN114553362 A CN 114553362A CN 202011331102 A CN202011331102 A CN 202011331102A CN 114553362 A CN114553362 A CN 114553362A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04K—SECRET COMMUNICATION; JAMMING OF COMMUNICATION
- H04K1/00—Secret communication
- H04K1/02—Secret communication by adding a second signal to make the desired signal unintelligible
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B7/00—Radio transmission systems, i.e. using radiation field
- H04B7/14—Relay systems
- H04B7/15—Active relay systems
- H04B7/185—Space-based or airborne stations; Stations for satellite systems
- H04B7/1851—Systems using a satellite or space-based relay
- H04B7/18513—Transmission in a satellite or space-based system
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B7/00—Radio transmission systems, i.e. using radiation field
- H04B7/14—Relay systems
- H04B7/15—Active relay systems
- H04B7/185—Space-based or airborne stations; Stations for satellite systems
- H04B7/18578—Satellite systems for providing broadband data service to individual earth stations
- H04B7/18593—Arrangements for preventing unauthorised access or for providing user protection
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04K—SECRET COMMUNICATION; JAMMING OF COMMUNICATION
- H04K1/00—Secret communication
- H04K1/06—Secret communication by transmitting the information or elements thereof at unnatural speeds or in jumbled order or backwards
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
- Y02D30/00—Reducing energy consumption in communication networks
- Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks
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Abstract
The application is suitable for the technical field of Beidou satellite communication, and provides a satellite data encryption method which comprises the following steps: inserting interference data into a satellite data frame to be sent at a random position to obtain target sending data, wherein the interference data is determined according to random time and a channel number of a satellite data sending channel; determining satellite data transmission channels corresponding to the transmission moments according to the random time; the data are transmitted through the satellite data transmission channels corresponding to the transmission moments at the transmission moments, interference data are inserted into original data on the basis of random positions to play a role in information source encryption, and then the incidence relation between each transmission moment and each satellite data transmission channel is determined on the basis of random time, so that the data transmission is random by using which physical channel at which moment, the confidentiality of a data transmission process is increased, and the problem that the data security of the Beidou satellite system is difficult to guarantee is solved.
Description
Technical Field
The application belongs to the technical field of Beidou satellite communication, and particularly relates to a satellite data encryption method and terminal equipment.
Background
The Beidou satellite navigation system is a satellite navigation system with independent and independent intellectual property rights in China, and with the rapid development of the Beidou satellite navigation system, various Beidou satellite communication terminals based on the Beidou satellite navigation system are produced at the same time and are widely applied to the fields of electric power, agriculture, water conservancy, sea and land transportation and the like.
In order to solve the problem that data of each remote terminal is accessed to a master station system, a Beidou commander is usually configured to realize the functions of storing and forwarding the data. However, the Beidou commander is directly connected to the master station system, and data analysis is performed on the master station system, so that the existing power communication protocol needs to be changed, the sent data conforms to the frame format of Beidou data transmission, and the adaptability of the master station system is undoubtedly reduced.
In order to solve the problem, the Beidou commanding machine can transmit the Beidou data to the GPRS/4G transmitting device and then access the master station system through the GPRS/4G transmitting device, however, the Beidou commanding machine needs to be arranged outside a machine room in the mode, and therefore the safety of the data is difficult to guarantee.
Disclosure of Invention
The embodiment of the application provides a satellite data encryption method and terminal equipment, and can solve the problem that the data security is difficult to guarantee.
In a first aspect, an embodiment of the present application provides a satellite data encryption method, including:
inserting interference data into a satellite data frame to be sent at a random position to obtain target sending data, wherein the interference data is determined according to random time and a channel number of a satellite data sending channel;
determining satellite data transmission channels corresponding to the transmission moments according to the random time;
and carrying out data transmission at each transmission time through the satellite data transmission channel corresponding to each transmission time.
In a possible implementation manner of the first aspect, the inserting interference data into a data frame of a satellite to be transmitted at a random position to obtain target transmission data includes:
acquiring a channel number of a satellite data sending channel;
and after the channel number is randomly processed, inserting the processed data into a satellite data frame to be transmitted at a random position.
In a possible implementation manner of the first aspect, the determining, according to the random time, a satellite data transmission channel corresponding to each transmission time includes:
associating the channel number of each satellite data transmission channel with each transmission moment based on random time;
and determining satellite data sending channels corresponding to the sending moments according to the incidence relation between the channel numbers of the satellite data sending channels and the sending moments.
In a possible implementation manner of the first aspect, the satellite data encryption method further includes:
splitting satellite data to be sent into a plurality of satellite data fragments; encrypting the satellite data fragments to obtain target fragment data;
and determining the sending time of each target fragment data according to random time.
In one possible implementation manner of the first aspect, the satellite data encryption method further includes:
determining satellite data sending channels of the target fragment data according to the sending time of the target fragment data;
and transmitting each target fragment data through a satellite data transmission channel corresponding to each transmission time at each transmission time.
In a possible implementation manner of the first aspect, the determining, according to the transmission time of each target fragment data, a satellite data transmission channel of each satellite data to be transmitted includes:
determining to associate the channel number of each satellite data transmission channel with each transmission moment based on random time;
and determining the satellite data transmission channels of the target fragment data according to the incidence relation between the channel numbers of the satellite data transmission channels and the transmission moments.
In a possible implementation manner of the first aspect, the performing data transmission through the satellite data transmission channel corresponding to each transmission time at each transmission time includes:
and switching the satellite data transmission channel to the satellite data transmission channel corresponding to the satellite data transmission channel at each transmission moment.
In a possible implementation manner of the first aspect, the satellite data is beidou short message data.
In a second aspect, an embodiment of the present application provides a terminal device, including:
the encryption unit is used for inserting interference data into a satellite data frame to be sent at a random position to obtain target sending data, wherein the interference data is determined according to random time and a channel number of a satellite data sending channel;
the channel determining unit is used for determining satellite data transmitting channels corresponding to all transmitting moments according to the random time stamps;
and the data sending unit is used for sending data at each sending time through the satellite data sending channel corresponding to each sending time.
In a third aspect, an embodiment of the present application provides a terminal device, where the terminal device includes a processor, a memory, and a computer program stored in the memory and executable on the processor, and the processor, when executing the computer program, implements the method according to the first aspect or any optional manner of the first aspect.
In a fourth aspect, embodiments of the present application provide a computer-readable storage medium storing a computer program, which when executed by a processor implements the method according to the first aspect or any alternative manner of the first aspect.
In a fifth aspect, the present application provides a computer program product, when the computer program product runs on a terminal device, the terminal device is caused to execute the satellite data encryption method according to any one of the first aspect.
It is understood that the beneficial effects of the second aspect to the fifth aspect can be referred to the related description of the first aspect, and are not described herein again.
Compared with the prior art, the embodiment of the application has the advantages that: interference data are inserted based on random positions to play a role of information source encryption, and then the incidence relation between each sending moment and each satellite data sending channel is determined based on random time, so that the physical channel used at which moment to send data is random, the confidentiality of the data sending process is improved, and the problem that the data security of the Beidou satellite system is difficult to guarantee is solved.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the embodiments or the prior art descriptions will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without inventive exercise.
Fig. 1 is a schematic flow chart of a satellite data encryption method according to an embodiment of the present application;
fig. 2 is a schematic flow chart of a satellite data encryption method according to another embodiment of the present application;
fig. 3 is a schematic structural diagram of a terminal device according to an embodiment of the present application;
fig. 4 is a schematic structural diagram of a terminal device according to another embodiment of the present application.
Detailed Description
In the following description, for purposes of explanation and not limitation, specific details are set forth, such as particular system structures, techniques, etc. in order to provide a thorough understanding of the embodiments of the present application. It will be apparent, however, to one skilled in the art that the present application may be practiced in other embodiments that depart from these specific details. In other instances, detailed descriptions of well-known systems, devices, circuits, and methods are omitted so as not to obscure the description of the present application with unnecessary detail.
It will be understood that the terms "comprises" and/or "comprising," when used in this specification and the appended claims, specify the presence of stated features, integers, steps, operations, elements, and/or components, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and/or groups thereof.
It should also be understood that the term "and/or" as used in this specification and the appended claims refers to and includes any and all possible combinations of one or more of the associated listed items.
As used in this specification and the appended claims, the term "if" may be interpreted contextually as "when", "upon" or "in response to" determining "or" in response to detecting ". Similarly, the phrase "if it is determined" or "if a [ described condition or event ] is detected" may be interpreted contextually to mean "upon determining" or "in response to determining" or "upon detecting [ described condition or event ]" or "in response to detecting [ described condition or event ]".
Furthermore, in the description of the present application and the appended claims, the terms "first," "second," "third," and the like are used for distinguishing between descriptions and not necessarily for describing or implying relative importance.
Reference throughout this specification to "one embodiment" or "some embodiments," or the like, means that a particular feature, structure, or characteristic described in connection with the embodiment is included in one or more embodiments of the present application. Thus, appearances of the phrases "in one embodiment," "in some embodiments," "in other embodiments," or the like, in various places throughout this specification are not necessarily all referring to the same embodiment, but rather "one or more but not all embodiments" unless specifically stated otherwise. The terms "comprising," "including," "having," and variations thereof mean "including, but not limited to," unless expressly specified otherwise.
The satellite data encryption method provided by the embodiment of the application can be applied to a satellite data sending terminal (hereinafter referred to as a sending terminal). Specifically, the transmitting end may be a satellite data transceiver having a satellite data transceiving function.
In this application embodiment, above-mentioned sending end can be multiple terminal equipment such as big dipper signal transceiver, big dipper commander, big dipper subscriber unit, leading server, and this application does not put a limit to this.
As an embodiment of the application, the transmitting end is a Beidou signal transceiver.
Referring to fig. 1, fig. 1 shows a schematic flow chart of a satellite data encryption method provided in the present application, which may be applied to the transmitting end by way of example and not limitation.
S11: and inserting the interference data into a satellite data frame to be sent at a random position to obtain target sending data, wherein the interference data is determined according to random time and a channel number of a satellite data sending channel.
In specific application, the unique channel number of each satellite data transmission channel is determined, the unique channel number is embedded into a satellite data frame to be transmitted, the channel number of the satellite data transmission channel is used as interference data, and the data confidentiality is enhanced.
In an embodiment of the present application, the S11 may include:
acquiring a channel number of a satellite data sending channel;
and after the channel number is randomly processed, inserting the processed data into a satellite data frame to be transmitted at a random position.
In the real-time example of the application, when satellite data transmission is needed, a channel number of a physical channel for transmitting data can be randomized, interference data after randomization is obtained, and then insertion time and insertion positions are randomly controlled, so that the data security is effectively improved.
In a particular application, the channel number may be randomized by a random number generator. The insertion time is then controlled based on the random time so that the location of the insertion is also random.
S12: and determining satellite data transmission channels corresponding to the transmission moments according to the random time.
In this embodiment, the transmitting end may include a plurality of satellite data transmission channels, and each satellite data transmission channel may be configured to transmit satellite data. In order to improve the security of the data transmission process, the transmission time of each satellite data transmission channel is determined by random time.
Specifically, the physical channel number (code division multiple access) of each satellite data transmission channel may be combined with the logical channel to obtain the channel number of each satellite data transmission channel. Assuming that the transmitting end includes N logical sub-arrays (i.e., N satellite antennas), each satellite antenna includes M physical channel numbers, and data transmission control of M × N different satellite data transmission channels can be realized based on the multiplication principle.
When data is transmitted, the incidence relation between each transmitting moment and each satellite data transmitting channel is determined firstly based on random time. That is, at the time of data transmission, the channel number ID1 of the satellite transmission channel used at the time of transmitting the target transmission data at the first transmission time T0 may be determined based on a random time; and then determining the channel number ID2 of the satellite transmission channel used when the target transmission data is transmitted at the second transmission time T1, and so on. So that at which time instant the data transmission is performed using which physical channel is random, increasing the confidentiality of the data transmission process.
In a possible implementation manner, the determining, according to the random time, the satellite data transmission channel corresponding to each preset time includes:
associating the channel number of each satellite data transmission channel with each transmission moment based on random time;
and determining satellite data sending channels corresponding to the sending moments according to the incidence relation between the channel numbers of the satellite data sending channels and the sending moments.
In the embodiment of the application, the sending time is firstly associated with the channel number of the satellite data sending channel based on random time.
For example, assume that 4 satellite data frames need to be transmitted. The satellite data frames are transmitted at the time T0, the time T1, the time T2 and the time T3 respectively, and at the time, the first target sending data are determined to be transmitted at the time T2, the second target sending data are transmitted at the time T3, the third target sending data are transmitted at the time T1 and the fourth target sending data are transmitted at the time T0 based on random time. And the time of T0 is associated with the satellite data transmission channel with the channel number ID1, the time of T1 is associated with the satellite data transmission channel with the channel number ID4, the time of T2 is associated with the satellite data transmission channel with the channel number ID2, and the time of T3 is associated with the satellite data transmission channel with the channel number ID 3.
Based on the above-mentioned association relationship, it can be determined that the satellite data transmission channel corresponding to the time T0 is the satellite data transmission channel with the channel number ID1, the satellite data transmission channel corresponding to the time T1 is the satellite data transmission channel with the channel number ID4, the satellite data transmission channel corresponding to the time T2 is the satellite data transmission channel with the channel number ID2, and the satellite data transmission channel corresponding to the time T3 is the satellite data transmission channel with the channel number ID 3.
S13: and carrying out data transmission at each transmission moment through a satellite data transmission channel corresponding to each transmission moment.
Specifically, the satellite data transmission channel is switched to the satellite data transmission channel corresponding to the satellite data transmission channel at each transmission time.
In the embodiment of the application, after the satellite data transmission channel is determined, the satellite data to be transmitted are sequentially transmitted to the receiving end according to each transmission time.
Illustratively, the satellite data frames are transmitted at times T0, T1, T2, and T3, respectively, when it is determined based on random time that the first target transmission data is transmitted at time T2, the second target transmission data is transmitted at time T3, the third target transmission data is transmitted at time T1, and the fourth target transmission data is transmitted at time T0. And the time of T0 is associated with the satellite data transmission channel with the channel number ID1, the time of T1 is associated with the satellite data transmission channel with the channel number ID4, the time of T2 is associated with the satellite data transmission channel with the channel number ID2, and the time of T3 is associated with the satellite data transmission channel with the channel number ID 3.
Transmitting fourth target transmission data by using a satellite data transmission channel with a channel number ID1 at time T0; transmitting third target transmission data by using a satellite data transmission channel with a channel number ID4 at T1; at time T2, the satellite data transmission channel with channel number ID2 is used for transmitting first target transmission data; the second object transmission data is transmitted using the satellite data transmission channel with the channel number ID3 at time T3.
In the embodiment of the application, the target sending data is encrypted Beidou short message data.
In the embodiment of the application, the receiving end can perform reverse processing based on a pre-agreed random time algorithm to realize data frame synchronization, and can perform decryption based on a pre-agreed decryption algorithm to extract original sending data to realize information source decoding.
The method has the advantages that the interference data are inserted into the original data based on the random position to play a role in information source encryption, and then the incidence relation between each sending time and each satellite data sending channel is determined based on the random time, so that the physical channel used at which time for data sending is random, the confidentiality of the data sending process is improved, and the problem that the data security of the Beidou satellite system is difficult to guarantee is solved.
Referring to fig. 2, fig. 2 is a schematic diagram illustrating an implementation flow of a satellite data encryption method according to another embodiment of the present application. As shown in fig. 2, when a large amount of data is transmitted, the satellite data encryption method includes:
s21: splitting satellite data to be sent into a plurality of satellite data fragments; and encrypting the satellite data fragment to obtain target fragment data.
In the embodiment of the application, satellite data to be transmitted can be split into a plurality of target fragment data meeting the transmission requirement of the Beidou antenna according to actual needs and the data transmission bandwidth of the Beidou antenna.
In the present application, the above encryption process can be referred to the discussion of S11, and is not described herein.
For the specification, the satellite data splitting process may refer to the existing splitting mode, which is not described herein.
S22: and determining the sending time of each target fragment data according to random time.
In the embodiment of the present application, the transmission timing of each target fragment data is first determined based on a random time. Here, the transmission time of each target fragment data is randomly allocated, so that even if the data is stolen in the transmission process, the correct frame combination sequence cannot be known, and the confidentiality in the data transmission process is effectively increased.
S23: and determining satellite data transmission channels of the target fragment data according to the transmission time of the target fragment data.
In the embodiment of the application, when data fragment transmission is carried out, the association relationship between each transmission moment and each satellite data transmission channel is determined firstly based on random time. That is, at the time of data transmission, the channel number ID1 of the satellite transmission channel used when the target fragment data is transmitted at the first transmission time T0 may be determined based on a random time; and then determines the channel number ID2 of the satellite transmission channel used when the target clip data is transmitted at the second transmission time T1, and so on. So that at which time instant the data transmission is performed using which physical channel is random, increasing the confidentiality of the data transmission process.
In one possible implementation, the S23 includes:
determining to associate the channel number of each satellite data transmission channel with each transmission moment based on random time;
and determining the satellite data transmission channels of the target fragment data according to the incidence relation between the channel numbers of the satellite data transmission channels and the transmission moments.
In the embodiment of the application, the sending time is firstly associated with the channel number of the satellite data sending channel based on random time.
Illustratively, assuming that 4 pieces of target fragment data need to be transmitted, the target fragment data are transmitted at times T0, T1, T2 and T3, respectively, at which time it is determined based on random times that the first piece of target fragment data is transmitted at time T2, the second piece of target fragment data is transmitted at time T3, the third piece of target fragment data is transmitted at time T1 and the fourth piece of target fragment data is transmitted at time T0. And the time of T0 is associated with the satellite data transmission channel with the channel number ID1, the time of T1 is associated with the satellite data transmission channel with the channel number ID4, the time of T2 is associated with the satellite data transmission channel with the channel number ID2, and the time of T3 is associated with the satellite data transmission channel with the channel number ID 3.
Based on the above-mentioned association relationship, it can be determined that the satellite data transmission channel corresponding to the time T0 is the satellite data transmission channel with the channel number ID1, the satellite data transmission channel corresponding to the time T1 is the satellite data transmission channel with the channel number ID4, the satellite data transmission channel corresponding to the time T2 is the satellite data transmission channel with the channel number ID2, and the satellite data transmission channel corresponding to the time T3 is the satellite data transmission channel with the channel number ID 3.
S24: and transmitting each target fragment data through the satellite data transmission channel corresponding to each transmission time at each transmission time.
In the embodiment of the application, the satellite data transmission channel is switched to the satellite data transmission channel corresponding to the satellite data transmission channel at each transmission moment.
In the embodiment of the application, after a satellite data transmission channel is determined, target fragment data are sequentially transmitted to a receiving end according to each transmission time.
Illustratively, assuming that 4 pieces of target fragment data need to be transmitted, the target fragment data are transmitted at times T0, T1, T2 and T3, respectively, at which time it is determined based on random times that the first piece of target fragment data is transmitted at time T2, the second piece of target fragment data is transmitted at time T3, the third piece of target fragment data is transmitted at time T1 and the fourth piece of target fragment data is transmitted at time T0. And the time of T0 is associated with the satellite data transmission channel with the channel number ID1, the time of T1 is associated with the satellite data transmission channel with the channel number ID4, the time of T2 is associated with the satellite data transmission channel with the channel number ID2, and the time of T3 is associated with the satellite data transmission channel with the channel number ID 3.
Therefore, at the time of transmitting target fragment data, fourth target fragment data is transmitted using the satellite data transmission channel whose channel number is ID1 at time T0; transmitting third target clip data using a satellite data transmission channel having a channel number ID4 at time T1; transmitting first target fragment data using a satellite data transmission channel having a channel number ID2 at time T2; the second target clip data is transmitted using the satellite data transmission channel having the channel number ID3 at time T3.
In the embodiment of the application, the receiving end can perform reverse processing based on a pre-agreed good random time algorithm to realize data frame synchronization, and frame combination processing is performed to obtain correct satellite data.
In this embodiment, the transmitting end may transmit the satellite data to the receiving end through a satellite system. Specifically, the transmitting terminal can transmit the Beidou short message data to the receiving terminal through the Beidou satellite system.
It should be understood that, the sequence numbers of the steps in the foregoing embodiments do not imply an execution sequence, and the execution sequence of each process should be determined by its function and inherent logic, and should not constitute any limitation to the implementation process of the embodiments of the present application.
Fig. 3 shows a block diagram of a terminal device provided in the embodiment of the present application, corresponding to the satellite data encryption method described in the above embodiment, and only shows a part related to the embodiment of the present application for convenience of description.
Referring to fig. 3, the terminal device includes: an encryption unit 31, a channel determination unit 32, and a data transmission unit 33.
The encryption unit 31 is configured to insert interference data into a satellite data frame to be transmitted at a random position to obtain target transmission data, where the interference data is determined according to random time and a channel number of a satellite data transmission channel.
The channel determining unit 32 is configured to determine satellite data transmission channels corresponding to the respective transmission times according to the random timestamps.
The data transmission unit 33 is configured to perform data transmission through the satellite data transmission channel corresponding to each transmission time at each transmission time.
In an embodiment of the present application, the encryption unit includes a channel number obtaining unit and a random unit.
The channel number acquisition unit is used for acquiring the channel number of the satellite data transmission channel.
And the random unit is used for inserting the processed data into a satellite data frame to be transmitted at a random position after the channel number is randomly processed.
In an embodiment of the present application, the channel determination unit 32 includes an association unit and a determination unit.
The association unit is used for associating the channel number of each satellite data transmission channel with each transmission time based on random time.
The determining unit is used for determining satellite data sending channels corresponding to the sending moments according to the incidence relation between the channel numbers of the satellite data sending channels and the sending moments.
In an embodiment of the present application, the terminal device further includes a splitting unit and a time determining unit.
The splitting unit is used for splitting satellite data to be sent into a plurality of satellite data fragments; and encrypting the satellite data fragment to obtain target fragment data.
The time determination unit is configured to determine a transmission time of each piece of target data according to a random time.
In an embodiment of the present application, the above-mentioned channel determining unit 32 is further configured to determine satellite data transmission channels of the respective target fragment data according to transmission timings of the respective target fragment data.
The data transmitting unit is further configured to transmit each piece of target fragment data through a satellite data transmission channel corresponding to each transmission time at each transmission time.
In an embodiment of the application, the associating unit is further configured to determine, based on the random time, to associate a channel number of each satellite data transmission channel with each transmission time.
The determining unit is further configured to determine the satellite data transmission channels of the respective target fragment data according to the association relationship between the channel numbers of the respective satellite data transmission channels and the respective transmission times.
In an embodiment of the application, the data sending unit is specifically configured to switch the satellite data sending channel to the satellite data sending channel corresponding to the satellite data sending channel at each sending time.
It should be noted that, for the information interaction, execution process, and other contents between the above-mentioned devices/units, the specific functions and technical effects thereof are based on the same concept as those of the embodiment of the method of the present application, and specific reference may be made to the part of the embodiment of the method, which is not described herein again.
It will be apparent to those skilled in the art that, for convenience and brevity of description, only the above-mentioned division of the functional units and modules is illustrated, and in practical applications, the above-mentioned function distribution may be performed by different functional units and modules according to needs, that is, the internal structure of the apparatus is divided into different functional units or modules to perform all or part of the above-mentioned functions. Each functional unit and module in the embodiments may be integrated in one processing unit, or each unit may exist alone physically, or two or more units are integrated in one unit, and the integrated unit may be implemented in a form of hardware, or in a form of software functional unit. In addition, specific names of the functional units and modules are only for convenience of distinguishing from each other, and are not used for limiting the protection scope of the present application. The specific working processes of the units and modules in the system may refer to the corresponding processes in the foregoing method embodiments, and are not described herein again.
Fig. 4 is a schematic structural diagram of a terminal device according to an embodiment of the present application. As shown in fig. 4, the terminal device 4 of this embodiment includes: at least one processor 40 (only one shown in fig. 4), a memory 41, and a computer program 42 stored in said memory 41 and executable on said at least one processor 40, said processor 40 implementing the steps in any of the various satellite data encryption method embodiments described above when executing said computer program 42. In this application embodiment, above-mentioned terminal equipment can be big dipper antenna, also can be equipment such as big dipper data transceiver, big dipper commander, big dipper subscriber machine including big dipper multichannel antenna.
The Processor 40 may be a Central Processing Unit (CPU), and the Processor 40 may be other general purpose Processor, a Digital Signal Processor (DSP), an Application Specific Integrated Circuit (ASIC), an off-the-shelf Programmable Gate Array (FPGA) or other Programmable logic device, discrete Gate or transistor logic device, discrete hardware component, or the like. A general purpose processor may be a microprocessor or the processor may be any conventional processor or the like.
The memory 41 may in some embodiments be an internal storage unit of the terminal device 4, such as a hard disk or a memory of the terminal device 4. In other embodiments, the memory 41 may also be an external storage device of the terminal device 4, such as a plug-in hard disk, a Smart Media Card (SMC), a Secure Digital (SD) Card, a Flash memory Card (Flash Card), or the like provided on the terminal device 4. Further, the memory 41 may also include both an internal storage unit and an external storage device of the terminal device 4. The memory 41 is used for storing an operating system, an application program, a BootLoader (BootLoader), data, and other programs, such as program codes of the computer program. The memory 41 may also be used to temporarily store data that has been output or is to be output.
The embodiments of the present application further provide a computer-readable storage medium, where a computer program is stored, and when the computer program is executed by a processor, the computer program implements the steps in the above-mentioned method embodiments.
The embodiments of the present application provide a computer program product, which when running on a mobile terminal, enables the mobile terminal to implement the steps in the above method embodiments when executed.
The integrated unit, if implemented in the form of a software functional unit and sold or used as a stand-alone product, may be stored in a computer readable storage medium. Based on such understanding, all or part of the processes in the methods of the embodiments described above can be implemented by a computer program, which can be stored in a computer-readable storage medium and can implement the steps of the embodiments of the methods described above when the computer program is executed by a processor. Wherein the computer program comprises computer program code, which may be in the form of source code, object code, an executable file or some intermediate form, etc. The computer readable medium may include at least: any entity or device capable of carrying computer program code to a photographing apparatus/terminal device, recording medium, computer Memory, Read-Only Memory (ROM), Random Access Memory (RAM), electrical carrier wave signals, telecommunication signals, and software distribution medium. Such as a usb-disk, a removable hard disk, a magnetic or optical disk, etc. In certain jurisdictions, computer-readable media may not be an electrical carrier signal or a telecommunications signal in accordance with legislative and patent practice.
In the above embodiments, the descriptions of the respective embodiments have respective emphasis, and reference may be made to the related descriptions of other embodiments for parts that are not described or illustrated in a certain embodiment.
Those of ordinary skill in the art will appreciate that the various illustrative elements and algorithm steps described in connection with the embodiments disclosed herein may be implemented as electronic hardware or combinations of computer software and electronic hardware. Whether such functionality is implemented as hardware or software depends upon the particular application and design constraints imposed on the implementation. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the present application.
In the embodiments provided in the present application, it should be understood that the disclosed apparatus/network device and method may be implemented in other ways. For example, the above-described apparatus/network device embodiments are merely illustrative, and for example, the division of the modules or units is only one logical function division, and other divisions may be realized in practice, for example, multiple units or components may be combined or integrated into another system, or some features may be omitted, or not executed. In addition, the shown or discussed mutual coupling or direct coupling or communication connection may be an indirect coupling or communication connection through some interfaces, devices or units, and may be in an electrical, mechanical or other form.
The units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of the embodiment.
The above-mentioned embodiments are only used for illustrating the technical solutions of the present application, and not for limiting the same; although the present application has been described in detail with reference to the foregoing embodiments, it should be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; such modifications and substitutions do not substantially depart from the spirit and scope of the embodiments of the present application and are intended to be included within the scope of the present application.
Claims (10)
1. A method for encrypting satellite data, comprising:
inserting interference data into a satellite data frame to be sent at a random position to obtain target sending data, wherein the interference data is determined according to random time and a channel number of a satellite data sending channel;
determining satellite data transmission channels corresponding to the transmission moments according to the random time;
and carrying out data transmission at each transmission time through the satellite data transmission channel corresponding to each transmission time.
2. The satellite data encryption method as claimed in claim 1, wherein said inserting interference data into the satellite data frame to be transmitted at a random position to obtain the target transmission data comprises:
acquiring a channel number of a satellite data sending channel;
and after the channel number is randomly processed, inserting the processed data into a satellite data frame to be transmitted at a random position.
3. The satellite data encryption method as claimed in claim 1, wherein said determining a satellite data transmission channel corresponding to each transmission time according to a random time comprises:
associating the channel number of each satellite data transmission channel with each transmission moment based on random time;
and determining satellite data sending channels corresponding to the sending moments according to the incidence relation between the channel numbers of the satellite data sending channels and the sending moments.
4. The satellite data encryption method as claimed in claim 1, further comprising:
splitting satellite data to be sent into a plurality of satellite data fragments; encrypting the satellite data fragments to obtain target fragment data;
and determining the sending time of each target fragment data according to random time.
5. The satellite data encryption method as claimed in claim 4, further comprising:
determining satellite data sending channels of the target fragment data according to the sending time of the target fragment data;
and transmitting each target fragment data through the satellite data transmission channel corresponding to each transmission time at each transmission time.
6. The satellite data encryption method as claimed in claim 3, wherein said determining a satellite data transmission channel for each satellite data to be transmitted according to a transmission time of each target fragment data comprises:
determining to associate the channel number of each satellite data transmission channel with each transmission moment based on random time;
and determining the satellite data transmission channels of the target fragment data according to the incidence relation between the channel numbers of the satellite data transmission channels and the transmission moments.
7. The satellite data encryption method as claimed in claim 1, wherein the data transmission is performed through the satellite data transmission channel corresponding to each transmission time at each transmission time, comprising:
and switching the satellite data transmission channel to the satellite data transmission channel corresponding to the satellite data transmission channel at each transmission moment.
8. A terminal device, comprising:
the encryption unit is used for inserting interference data into a satellite data frame to be sent at a random position to obtain target sending data, wherein the interference data is determined according to random time and a channel number of a satellite data sending channel;
the channel determining unit is used for determining satellite data transmitting channels corresponding to all transmitting moments according to the random time stamps;
and the data transmission unit is used for transmitting data through the transmission channel corresponding to each transmission time at each transmission time.
9. A terminal device comprising a memory, a processor and a computer program stored in the memory and executable on the processor, characterized in that the processor implements the method according to any of claims 1 to 7 when executing the computer program.
10. A computer-readable storage medium, in which a computer program is stored which, when being executed by a processor, carries out the method according to any one of claims 1 to 7.
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| CN202011331102.3A CN114553362A (en) | 2020-11-24 | 2020-11-24 | Satellite data encryption method and terminal equipment |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN115334498A (en) * | 2022-08-02 | 2022-11-11 | 北斗天汇（北京）科技有限公司 | Beidou information communication method, device, server and medium |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN115334498A (en) * | 2022-08-02 | 2022-11-11 | 北斗天汇（北京）科技有限公司 | Beidou information communication method, device, server and medium |
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