CN115208700B - Data remote display method based on data integrity operation - Google Patents
Data remote display method based on data integrity operation Download PDFInfo
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- CN115208700B CN115208700B CN202211120114.0A CN202211120114A CN115208700B CN 115208700 B CN115208700 B CN 115208700B CN 202211120114 A CN202211120114 A CN 202211120114A CN 115208700 B CN115208700 B CN 115208700B
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L63/00—Network architectures or network communication protocols for network security
- H04L63/12—Applying verification of the received information
- H04L63/123—Applying verification of the received information received data contents, e.g. message integrity
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/14—Digital output to display device ; Cooperation and interconnection of the display device with other functional units
- G06F3/1454—Digital output to display device ; Cooperation and interconnection of the display device with other functional units involving copying of the display data of a local workstation or window to a remote workstation or window so that an actual copy of the data is displayed simultaneously on two or more displays, e.g. teledisplay
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L63/00—Network architectures or network communication protocols for network security
- H04L63/04—Network architectures or network communication protocols for network security for providing a confidential data exchange among entities communicating through data packet networks
- H04L63/0428—Network architectures or network communication protocols for network security for providing a confidential data exchange among entities communicating through data packet networks wherein the data content is protected, e.g. by encrypting or encapsulating the payload
Abstract
The invention relates to a data remote display method based on data integrity operation, which relates to the technical field of data security and comprises the steps of carrying out data integrity operation processing on data to be remotely displayed and packing the data to be remotely displayed, a data integrity operation result and an operator of the data integrity operation; the packed data packet is encrypted and then sent to a decoding operation unit of a display; when the decoding operation unit receives the encrypted data packet, the decoding operation unit performs data integrity operation on the data to be remotely displayed in the data packet through an operator, and compares the data integrity operation result with the data integrity operation result in the data packet; and when the comparison result is consistent, displaying the data to be remotely displayed in the data packet through the display, and determining whether the data is displayed on the display or sending the data again and re-determining the processing mode of the data to be remotely displayed according to the consistency of the comparison result, so that the data security is improved.
Description
Technical Field
The invention relates to the technical field of data security, in particular to a data remote display method based on data integrity operation.
Background
In the development of modern business, internet interconnection and thing internet connection are not separated, and the internet and internet of things are developed to the present, the security of data transmission is always a problem of high concern in all social circles, data interaction is required in the development of business, the security of data transmission is an important ring for guaranteeing the development of business in the process of data interaction, and the security of data transmission based on the internet and the internet of things is greatly guaranteed in the prior art, but the threat in transmission is continuously updated.
Chinese patent publication No.: CN101611379B discloses a method and system for detecting tampering with a remote display. According to one method, a first data integrity result is generated at a secure module by performing a first data integrity operation on display data to be displayed on a remote display. The display data is transmitted from the security module to the remote display security module. The remote display security module receives the display data. At the remote display security module, a second data integrity result is generated by performing a first data integrity operation on the received display data. If the first data integrity result does not match the second data integrity result, making a determination at the secure module whether the remote display has been tampered with; it can be seen that the method for detecting tampering with a remote display has the following problems:
1. the method is only suitable for the payment field and only can solve the data security of data transmission between contact magnetic cards, and cannot be used for security guarantee of data transmission of businesses (such as enterprises).
2. The security of the data to be remotely displayed cannot be accurately controlled, so that the data security cannot be guaranteed.
Disclosure of Invention
Therefore, the invention provides a data remote display method based on data integrity operation, which is used for solving the problem that the safety of data to be remotely displayed cannot be accurately controlled in the prior art, so that the data safety cannot be ensured.
In order to achieve the above object, the present invention provides a data remote display method based on data integrity operation, comprising:
s1, carrying out data integrity operation processing on data to be remotely displayed, and packaging the data to be remotely displayed, a data integrity operation result and an operator of the data integrity operation;
s2, encrypting the packed data to be remotely displayed, the data integrity operation result and the operator data packet and then sending the data to a decoding operation unit of a display;
s3, when the decoding operation unit receives the encrypted data packet, performing data integrity operation on the data to be remotely displayed in the data packet through the operator, and comparing the data integrity operation result with the data integrity operation result in the data packet;
s4, when the comparison results are consistent, displaying the data to be remotely displayed in the data packet through a display, and if the comparison results are inconsistent, re-determining the processing mode of the data to be remotely displayed and re-transmitting the data packet;
in the step S2, determining an encryption complexity coefficient for the data packet according to the data amount of the data to be remotely displayed when the data packet is transmitted, and calculating the encryption complexity of the data packet when the determination is completed;
in the step S4, when the comparison result is inconsistent, determining a tampered data amount of the tampered data, and determining whether to adjust the encryption complexity coefficient according to the tampered data amount.
Further, in the step S2, when the packed data packet is sent to a decoding operation unit of a display, the data sending end obtains the data amount W of the data to be remotely displayed, and determines an encryption complexity coefficient for the data packet according to a comparison result between the data amount W of the data to be remotely displayed and a first preset data amount W1 and a second preset data amount W2 in the data sending end, and when W is less than or equal to W1, sets the encryption complexity coefficient to be Y1; when W1 is larger than W and smaller than or equal to W2, setting the encryption complexity coefficient as Y2; and when W is larger than W2, setting the encryption complexity coefficient to be Y3, wherein W1 is smaller than W2, and Y1 is larger than 1 and smaller than Y2 and smaller than Y3 and smaller than 2.
Further, in step S2, when determining that the encryption complexity coefficient is complete, the data sending end determines the encryption complexity F for the data packet according to the security level of the data to be remotely displayed and the encryption complexity coefficient, where F = Mi × Yj, where i =1,2, \ 8230;, n, j =1,2,3.
Further, in the step S4, when the comparison result is inconsistent, the decoding operation unit obtains the tampered data amount C of the tampered data in the data to be displayed remotely via the display, compares the tampered data amount C with the preset tampered data amount C0, and determines the processing mode when the data is retransmitted according to the comparison result,
if C is less than or equal to C0, determining to adjust the encryption complexity coefficient;
and if C is larger than C0, determining that interference data need to be added into the data to be remotely displayed.
Further, in the step S4, when it is determined to adjust the encryption complexity, a first data amount difference Δ Ca between the tampered data amount C and a preset tampered data amount C0 is calculated, Δ Ca = C0-C is set, and a corresponding adjustment coefficient is selected according to a comparison result between the first data amount difference Δ Ca and a preset data amount difference to adjust the encryption complexity coefficient,
wherein the preset data amount difference comprises a first preset data amount difference Δ C1 and a second preset data amount difference Δ C2, the adjustment coefficient comprises a first adjustment coefficient K1, a second adjustment coefficient K2 and a third adjustment coefficient K3, wherein Δ C1 is less than Δ C2, and K1 is more than 1 and K2 is more than K3 and less than 1.2 are set,
when delta Ca is less than or equal to delta C1, selecting a first adjusting coefficient K1 to adjust the encryption complexity coefficient;
when delta C1 is larger than delta Ca and is smaller than or equal to delta C2, selecting a second adjusting coefficient K2 to adjust the encryption complexity coefficient;
when delta Ca is larger than delta C2, selecting a third adjusting coefficient K3 to adjust the encryption complexity coefficient;
when the e-th adjustment coefficient Ke is selected to adjust the encryption complexity coefficient, e =1,2,3 is set, the adjusted encryption complexity coefficient is set to Yj' and Yj ″ = Yj × Ke is set.
Further, in step S4, when it is determined that the interference data needs to be added to the data to be remotely displayed, calculating a second data amount difference Δ Cb between the tampered data amount C and a preset tampered data amount C0, setting Δ Cb = C-C0, and determining the interference data amount according to a comparison result between the second data amount difference and the preset data amount difference,
wherein the interference data amount comprises a first interference data amount G1, a second interference data amount G2 and a third interference data amount G3, G1 < G2 < G3,
when the delta Cb is less than or equal to the delta C1, determining the interference data amount to be G1;
when delta C1 is larger than delta Cb and is smaller than or equal to delta C2, determining the interference data volume as G2;
when Δ Cb > Δ C2, the amount of interference data is determined to be G3.
Further, when the interference data volume is determined and the retransmission of the data packet is completed, if the comparison result is inconsistent, determining the data volume D of the tampered interference data, and determining whether the data to be remotely displayed is tampered according to the comparison result between the data volume D of the tampered interference data and a preset tampered interference data volume, wherein the preset tampered interference data volume includes a first preset tampered interference data volume D1 and a second preset tampered interference data volume D2,
if D is less than or equal to D1, determining that the data to be remotely displayed is not tampered;
if D1 is larger than D and is not larger than D2, determining that the data to be remotely displayed is tampered, and adjusting the interference data amount;
and if D is larger than D2, determining that the data to be remotely displayed is tampered, and adjusting the encryption complexity coefficient.
Further, when it is determined that the data to be remotely displayed is tampered and D1 is greater than D and is not greater than D2, calculating a first interference data amount difference Δ Da between the data amount D of the tampered interference data and a first preset tampered interference data amount D1, setting Δ Da = D-D1, and determining an adjustment coefficient for adjusting the interference data amount according to a comparison result of the first interference data amount difference and a preset interference data amount difference,
wherein the preset interference data amount difference comprises a first preset interference data amount difference delta D1 and a second preset interference data amount difference delta D2, the adjustment coefficients comprise a first data amount adjustment coefficient S1, a second data amount adjustment coefficient S2 and a third data amount adjustment coefficient S3, delta D1 is less than delta D2,1 is less than S2 is less than S3 is less than 1.5,
when the delta Da is less than or equal to the delta D1, selecting a first data volume adjusting coefficient S1 to adjust the data volume of the interference data;
when the delta D1 is larger than the delta Da and smaller than or equal to the delta D2, selecting a second data volume adjusting coefficient S2 to adjust the data volume of the interference data;
when the delta Da is larger than the delta D2, selecting a third data volume adjusting coefficient S3 to adjust the data volume of the interference data;
when the data amount of the interference data is adjusted by selecting the z-th data amount adjustment coefficient Sz, z =1,2,3 is set, the adjusted data amount of the interference data is set to G4, and G4= Gx × Sz is set, where x =1,2,3.
Further, when it is determined that the encryption complexity coefficient needs to be adjusted, calculating a second interference data amount difference Δ Db between the data amount D of the tampered interference data and a second preset tampered interference data amount D2, setting Δ Db = D-D2, determining a corresponding correction coefficient according to a comparison result of the second interference data amount difference and a preset interference data amount difference to adjust the encryption complexity coefficient, wherein the correction coefficient includes a first correction coefficient P1, a second correction coefficient P2, and a third correction coefficient P3, setting 1 < P2 < P3 < 1.5,
when the delta Db is not greater than the delta D1, setting the adjusted encryption complexity coefficient as Yj' xP 1;
when delta D1 is more than delta Db and less than or equal to delta D2, setting the adjusted encryption complexity as Yj' xP 2;
when Δ Db > Δ D2, then the adjusted encryption complexity coefficient is set to Yj' × P3.
Further, when the interference data are determined to be added, if the comparison result is that the comparison result is consistent, the interference data are independently sent to the display, and the decoding operation unit extracts the interference data in the data to be remotely displayed according to the interference data sent to the display.
Compared with the prior art, the remote data transmission method has the advantages that when the remote data are transmitted, the data to be remotely displayed are subjected to data integrity operation processing, the processed data are packed and encrypted together with the operation result and the operator and then are sent to the corresponding display, the decoding operation unit at the display end carries out decryption identification on the packed and sent data, the data integrity operation result sent to the display end is determined to be consistent with the integrity operation result of the data to be remotely displayed before being packed and sent, and therefore the security of data transmission among enterprises is improved.
Particularly, when the data to be displayed remotely is encrypted, the encryption complexity coefficient when the data is encrypted is determined according to the data volume of the data to be displayed remotely, the encryption complexity of the data to be displayed remotely is calculated according to the determined encryption complexity coefficient and the security level of the data to be displayed remotely, and when the encryption complexity coefficient is determined during calculation, the encryption complexity coefficient is determined according to the comparison result of the data volume to be displayed remotely and a plurality of preset data volumes, so that the accurate control of the data to be displayed remotely is improved, and the data security is further improved.
Further, before the data to be displayed remotely is sent to the display for display, if the results of data integrity operation are inconsistent, it is indicated that a data tampering condition may exist, the data volume to be tampered in the data to be displayed remotely is extracted, and whether to adjust the encryption complexity coefficient or add interference data into the data to be displayed remotely is determined according to the extracted data volume to further improve the accurate control of the data to be displayed remotely, so that the data security is further improved.
Furthermore, the invention sets a plurality of preset data quantity difference values and the adjusting coefficients of the encryption complexity, and determines the corresponding adjusting coefficients to adjust the encryption complexity according to the comparison result of the calculated data quantity difference values of the falsified data quantity and the preset data quantity and the plurality of preset data quantity difference values when the adjustment of the encryption complexity is determined, thereby further improving the accurate control of the remote display data and further improving the data security.
Furthermore, the invention determines the data volume of the interference data to be added by setting a plurality of preset data volume difference values and interference data volume according to the comparison result of the calculated data volume to be tampered with, the data volume difference value of the preset data volume and the plurality of preset data volume difference values when the interference data to be added is determined, thereby further improving the accurate control of the remote display data and further improving the data security.
Furthermore, according to the invention, by setting a plurality of preset tampered interference data volumes, when the interference data is added into the data to be remotely displayed and the data sending is completed, if the comparison result is still inconsistent, the safety of the data to be remotely displayed is determined by obtaining the data volume of the tampered interference data and comparing the data volume of the tampered interference data with the plurality of preset tampered interference data volumes, so that the accurate control of the remote display data is further improved, and the data safety is further improved.
Drawings
Fig. 1 is a flowchart of a data remote display method based on data integrity operation according to an embodiment of the present invention.
Detailed Description
In order that the objects and advantages of the invention will be more clearly understood, the invention is further described below with reference to examples; it should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
Preferred embodiments of the present invention are described below with reference to the accompanying drawings. It should be understood by those skilled in the art that these embodiments are only for explaining the technical principle of the present invention, and do not limit the scope of the present invention.
Fig. 1 is a flowchart illustrating a data remote display method based on data integrity calculation according to an embodiment of the present invention.
The data remote display method based on the data integrity operation comprises the following steps:
s1, carrying out data integrity operation processing on data to be remotely displayed, and packaging the data to be remotely displayed, a data integrity operation result and an operator of the data integrity operation;
s2, encrypting the packed data to be remotely displayed, the data integrity operation result and the operator data packet and then sending the encrypted data to a decoding operation unit of a display;
s3, when the decoding operation unit receives the encrypted data packet, performing data integrity operation on the data to be remotely displayed in the data packet through the operator, and comparing the data integrity operation result with the data integrity operation result in the data packet;
s4, when the comparison results are consistent, displaying the data to be remotely displayed in the data packet through a display, and if the comparison results are inconsistent, re-determining the processing mode of the data to be remotely displayed and re-transmitting the data packet;
in the step S2, determining an encryption complexity coefficient for the data packet according to the data amount of the data to be remotely displayed when the data packet is transmitted, and calculating the encryption complexity of the data packet when the determination is completed;
in the step S4, when the comparison result is inconsistent, determining a tampered data amount of the tampered data, and determining whether to adjust the encryption complexity coefficient according to the tampered data amount.
Specifically, in the step S2, when the packed data packet is sent to a decoding operation unit of a display, the data sending end obtains the data amount W of the data to be remotely displayed, and determines the encryption complexity coefficient of the data packet according to the comparison result between the data amount W of the data to be remotely displayed and the first preset data amount W1 and the second preset data amount W2 in the data sending end, and when W is less than or equal to W1, sets the encryption complexity coefficient to Y1; when W1 is larger than W and smaller than or equal to W2, setting the encryption complexity coefficient as Y2; and when W is larger than W2, setting the encryption complexity coefficient to be Y3, wherein W1 is smaller than W2, and Y1 is larger than 1 and smaller than Y2 and smaller than Y3 and smaller than 2.
Specifically, in step S2, when determining that the encryption complexity coefficient is complete, the data sending end determines the encryption complexity F for the data packet according to the security level of the data to be remotely displayed and the encryption complexity coefficient, and sets F = Mi × Yj, where i =1,2, \ 8230;, n, j =1,2,3.
Specifically, in step S4, when the comparison result is inconsistent, the decoding arithmetic unit obtains the tampered data amount C of the tampered data in the data to be displayed remotely, which needs to be displayed by the display, and compares the tampered data amount C with the preset tampered data amount C0, and determines the processing mode when the data is retransmitted according to the comparison result,
if C is less than or equal to C0, determining to adjust the encryption complexity coefficient;
and if C is larger than C0, determining that interference data needs to be added into the data to be remotely displayed.
Specifically, in step S4, when it is determined to adjust the encryption complexity, a first data amount difference Δ Ca between the tampered data amount C and a preset tampered data amount C0 is calculated, Δ Ca = C0-C is set, and a corresponding adjustment coefficient is selected according to a comparison result between the first data amount difference Δ Ca and a preset data amount difference to adjust the encryption complexity coefficient,
wherein the preset data amount difference comprises a first preset data amount difference Δ C1 and a second preset data amount difference Δ C2, the adjustment coefficients comprise a first adjustment coefficient K1, a second adjustment coefficient K2 and a third adjustment coefficient K3, wherein Δ C1 is less than Δ C2, 1 is more than K1 and more than K2 is more than K3 and less than 1.2,
when the delta Ca is less than or equal to the delta C1, selecting a first adjusting coefficient K1 to adjust the encryption complexity coefficient;
when delta C1 is larger than delta Ca and is smaller than or equal to delta C2, selecting a second adjusting coefficient K2 to adjust the encryption complexity coefficient;
when delta Ca is larger than delta C2, selecting a third adjusting coefficient K3 to adjust the encryption complexity coefficient;
when the e-th adjustment coefficient Ke is selected to adjust the encryption complexity coefficient, e =1,2,3 is set, the adjusted encryption complexity coefficient is set to Yj' and Yj ″ = Yj × Ke is set.
Specifically, in step S4, when it is determined that the interference data needs to be added to the data to be remotely displayed, a second data amount difference Δ Cb between the falsified data amount C and a preset falsified data amount C0 is calculated, Δ Cb = C-C0 is set, and the interference data amount is determined according to a comparison result between the second data amount difference and the preset data amount difference,
wherein the interference data amount comprises a first interference data amount G1, a second interference data amount G2 and a third interference data amount G3, G1 < G2 < G3,
when the delta Cb is less than or equal to the delta C1, determining the interference data amount to be G1;
when delta C1 is larger than delta Cb and is smaller than or equal to delta C2, determining the interference data volume as G2;
when Δ Cb > Δ C2, the amount of interference data is determined to be G3.
Specifically, when the interference data volume is determined and the retransmission of the data packet is completed, if the comparison result is inconsistent, determining the data volume D of the tampered interference data, and determining whether the data to be remotely displayed is tampered according to the comparison result between the data volume D of the tampered interference data and a preset tampered interference data volume, wherein the preset tampered interference data volume includes a first preset tampered interference data volume D1 and a second preset tampered interference data volume D2,
if D is less than or equal to D1, determining that the data to be remotely displayed is not tampered;
if D1 is larger than D and is not larger than D2, the data to be remotely displayed is determined to be tampered, and the interference data amount needs to be adjusted;
and if D is larger than D2, determining that the data to be remotely displayed is tampered, and adjusting the encryption complexity coefficient.
Specifically, when the remote display data to be displayed is falsified and D1 is larger than D and smaller than or equal to D2, calculating a first interference data amount difference Delta Da between the data amount D of the falsified interference data and a first preset tampered interference data amount D1, setting Delta Da = D-D1, and determining an adjustment coefficient for adjusting the interference data amount according to a comparison result of the first interference data amount difference and a preset interference data amount difference,
wherein the preset interference data amount difference comprises a first preset interference data amount difference delta D1 and a second preset interference data amount difference delta D2, the adjustment coefficients comprise a first data amount adjustment coefficient S1, a second data amount adjustment coefficient S2 and a third data amount adjustment coefficient S3, delta D1 is less than delta D2,1 is less than S2 is less than S3 is less than 1.5,
when the delta Da is less than or equal to the delta D1, selecting a first data volume adjusting coefficient S1 to adjust the data volume of the interference data;
when the delta D1 is larger than the delta Da and is smaller than or equal to the delta D2, selecting a second data volume adjusting coefficient S2 to adjust the data volume of the interference data;
when the delta Da is larger than the delta D2, selecting a third data volume adjusting coefficient S3 to adjust the data volume of the interference data;
when the data amount of the interference data is adjusted by selecting the z-th data amount adjustment coefficient Sz, z =1,2,3 is set, the adjusted data amount of the interference data is set to G4, and G4= Gx × Sz is set, where x =1,2,3.
Specifically, when it is determined that the encryption complexity coefficient needs to be adjusted, calculating a second interference data amount difference Δ Db between a data amount D of the tampered interference data and a second preset tampered interference data amount D2, setting Δ Db = D-D2, determining a corresponding correction coefficient according to a comparison result between the second interference data amount difference and a preset interference data amount difference, and adjusting the encryption complexity coefficient, wherein the correction coefficient includes a first correction coefficient P1, a second correction coefficient P2, and a third correction coefficient P3, setting 1 < P2 < P3 < 1.5,
when Δ Db is not greater than Δ D1, setting the adjusted encryption complexity coefficient to Yj' × P1;
when delta D1 is more than delta Db and less than or equal to delta D2, setting the adjusted encryption complexity as Yj' xP 2;
when Δ Db > Δ D2, then the adjusted encryption complexity coefficient is set to Yj' × P3.
Specifically, when the interference data is determined to be added, if the comparison result is that the results are consistent, the interference data is sent to the display independently, and the decoding operation unit extracts the interference data in the data to be remotely displayed according to the interference data sent to the display.
Specifically, when data transmission is carried out among enterprises, data completeness operation is carried out on data to be remotely displayed of the enterprises, the data to be remotely displayed, operation results and operators, which are subjected to data completeness operation, are packed, encrypted and sent, before the data are sent, an encryption complexity coefficient when the data are encrypted is determined, data completeness verification is carried out before a display is displayed, the safety of the data transmission process is determined according to the data completeness verification result and the data completeness verification result before sending, and when the data are determined to be inconsistent, the encryption complexity coefficient is determined to be adjusted according to the result of data quantity tampering or interference data are added into the data to be remotely displayed, so that the data in the data transmission process are prevented from being tampered or stolen.
So far, the technical solutions of the present invention have been described in connection with the preferred embodiments shown in the drawings, but it is apparent to those skilled in the art that the scope of the present invention is not limited to these specific embodiments. Equivalent changes or substitutions of related technical features can be made by those skilled in the art without departing from the principle of the invention, and the technical scheme after the changes or substitutions can fall into the protection scope of the invention.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention; various modifications and alterations to this invention will become apparent to those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (9)
1. A data remote display method based on data integrity operation is characterized by comprising the following steps:
s1, carrying out data integrity operation processing on data to be remotely displayed, and packaging the data to be remotely displayed, a data integrity operation result and an operator of the data integrity operation;
s2, encrypting the packed data to be remotely displayed, the data integrity operation result and the operator and then sending the encrypted result to a decoding operation unit of a display;
s3, when the decoding operation unit receives the encrypted data packet, performing data integrity operation on the data to be remotely displayed through the operator, and comparing the data integrity operation result with the consistency of the data integrity operation result in the data packet;
s4, when the comparison result is that the results are consistent, displaying the data to be remotely displayed through a display, and if the comparison result is that the results are not consistent, re-sending the data and re-determining the processing mode of the data to be remotely displayed;
in the step S2, when the data to be remotely displayed is transmitted, an encryption complexity coefficient of a data packet is determined according to the data amount of the data to be remotely displayed, and when the determination is completed, the encryption complexity of the data packet is calculated;
in the step S4, when the comparison result is inconsistent, determining a tampered data amount of the tampered data, and determining whether to adjust the encryption complexity coefficient according to the tampered data amount;
in step S4, when the comparison result is that the comparison result is inconsistent, the decoding operation unit obtains a tampered data amount C of the tampered data in the data to be remotely displayed and displayed on the display, compares the tampered data amount C with a preset tampered data amount C0, and determines a processing manner when the data is retransmitted according to the comparison result,
if C is less than or equal to C0, determining to adjust the encryption complexity coefficient;
if C is larger than C0, determining that interference data need to be added into the data to be remotely displayed;
in step S4, when it is determined that the interference data needs to be added to the data to be remotely displayed, a second data amount difference Δ Cb between the tampered data amount C and a preset tampered data amount C0 is calculated, Δ Cb = C-C0 is set, and the data amount of the interference data is determined according to a comparison result between the second data amount difference and the preset data amount difference.
2. The data remote display method based on data integrity operation according to claim 1, wherein in the step S2, when the packed data to be remotely displayed, the data integrity operation result, and the operator are encrypted and then sent to a decoding operation unit of a display, a data sending end obtains a data volume W of the data to be remotely displayed, and determines an encryption complexity coefficient for a data packet according to the data volume of the data to be remotely displayed and a comparison result of a first preset data volume W1 and a second preset data volume W2 in the data sending end, and when W is less than or equal to W1, the encryption complexity coefficient is set to Y1; when W1 is larger than W and smaller than or equal to W2, setting the encryption complexity coefficient as Y2; and when W is larger than W2, setting the encryption complexity coefficient to be Y3, wherein W1 is smaller than W2, and Y1 is larger than 1 and smaller than Y2 and smaller than Y3 and smaller than 2.
3. The remote data display method according to claim 2, wherein in step S2, when it is determined that the encryption complexity coefficient is complete, the data sending end determines the encryption complexity F for the data packet according to the security level of the data to be remotely displayed and the encryption complexity coefficient, and sets F = Mi × Yj, where Mi is the security level of the data to be remotely displayed, i =1,2, \8230, and n, j =1,2,3.
4. The method according to claim 3, wherein in step S4, when the encryption complexity is determined to be adjusted, a first data amount difference Δ Ca between the tampered data amount C and a preset tampered data amount C0 is calculated, Δ Ca = C0-C is set, and a corresponding adjustment coefficient is selected according to a comparison result between the first data amount difference Δ Ca and a preset data amount difference to adjust the encryption complexity coefficient,
wherein the preset data amount difference comprises a first preset data amount difference Δ C1 and a second preset data amount difference Δ C2, the adjustment coefficient comprises a first adjustment coefficient K1, a second adjustment coefficient K2 and a third adjustment coefficient K3, wherein Δ C1 is less than Δ C2, and K1 is more than 1 and K2 is more than K3 and less than 1.2 are set,
when the delta Ca is less than or equal to the delta C1, selecting a first adjusting coefficient K1 to adjust the encryption complexity coefficient;
when delta C1 is larger than delta Ca and is smaller than or equal to delta C2, selecting a second adjusting coefficient K2 to adjust the encryption complexity coefficient;
when delta Ca is larger than delta C2, selecting a third adjusting coefficient K3 to adjust the encryption complexity coefficient;
when the e-th adjustment coefficient Ke is selected to adjust the encryption complexity coefficient, e =1,2,3 is set, the adjusted encryption complexity coefficient is set to Yj', and Yj ″ = Yj × Ke is set.
5. The method according to claim 4, wherein the disturbance data amount comprises a first disturbance data amount G1, a second disturbance data amount G2, and a third disturbance data amount G3, G1 < G2 < G3,
when the delta Cb is less than or equal to the delta C1, determining the interference data amount to be G1;
when delta C1 is larger than delta Cb and is smaller than or equal to delta C2, determining the interference data volume as G2;
when Δ Cb > Δ C2, the amount of interference data is determined to be G3.
6. The remote data display method based on data integrity operation according to claim 5, wherein when determining the interference data volume and sending the data to be remotely displayed again is completed, if the comparison result is inconsistent, determining the data volume D of the tampered interference data, and determining whether the data to be remotely displayed is tampered according to the comparison result between the data volume D of the tampered interference data and the preset tampered interference data volume, wherein the preset tampered interference data volume includes a first preset tampered interference data volume D1 and a second preset tampered interference data volume D2,
if D is less than or equal to D1, determining that the data to be remotely displayed is not tampered;
if D1 is larger than D and is not larger than D2, determining that the data to be remotely displayed is tampered, and adjusting the interference data amount;
and if D is larger than D2, determining that the data to be remotely displayed is tampered, and adjusting the encryption complexity coefficient.
7. The method according to claim 6, wherein when it is determined that the data to be remotely displayed is falsified and D1 < D ≦ D2, calculating a first disturbing data amount difference Δ Da between the data amount D of the falsified disturbing data and a first preset falsified disturbing data amount D1, setting Δ Da = D-D1, and determining an adjustment coefficient for adjusting the disturbing data amount according to a comparison result of the first disturbing data amount difference and a preset disturbing data amount difference,
wherein the preset interference data amount difference comprises a first preset interference data amount difference delta D1 and a second preset interference data amount difference delta D2, the adjustment coefficients comprise a first data amount adjustment coefficient S1, a second data amount adjustment coefficient S2 and a third data amount adjustment coefficient S3, delta D1 is less than delta D2,1 is less than S2 is less than S3 is less than 1.5,
when the delta Da is less than or equal to the delta D1, selecting a first data volume adjusting coefficient S1 to adjust the data volume of the interference data;
when the delta D1 is larger than the delta Da and smaller than or equal to the delta D2, selecting a second data volume adjusting coefficient S2 to adjust the data volume of the interference data;
when the delta Da is larger than the delta D2, selecting a third data volume adjusting coefficient S3 to adjust the data volume of the interference data;
when the data amount of the interference data is adjusted by selecting the z-th data amount adjustment coefficient Sz, z =1,2,3 is set, the adjusted data amount of the interference data is set to G4, and G4= Gx × Sz is set, where x =1,2,3.
8. The method according to claim 7, wherein when it is determined that the encryption complexity factor needs to be adjusted, calculating a second interference data amount difference Δ Db between the tampered interference data amount D and a second predetermined tampered interference data amount D2, setting Δ Db = D-D2, and determining a corresponding correction factor according to a comparison result between the second interference data amount difference and the predetermined interference data amount difference to adjust the encryption complexity factor, wherein the correction factor includes a first correction factor P1, a second correction factor P2, and a third correction factor P3, setting 1 < P2 < P3 < 1.5,
when Δ Db is not greater than Δ D1, setting the adjusted encryption complexity coefficient to Yj' × P1;
when the delta D1 is more than the delta Db and less than or equal to the delta D2, setting the adjusted encryption complexity as Yj' xP 2;
when Δ Db > Δ D2, then the adjusted encryption complexity coefficient is set to Yj' × P3.
9. The remote data display method according to claim 8, wherein when the interference data is determined to be added, if the comparison result is that the interference data is consistent, the interference data is sent to the display independently, and the decoding operation unit extracts the interference data in the data to be displayed remotely according to the interference data sent to the display.
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| CN101448130A (en) * | 2008-12-19 | 2009-06-03 | 北京中星微电子有限公司 | Method, system and device for protecting data encryption in monitoring system |
| CN112203117A (en) * | 2020-09-15 | 2021-01-08 | 西安工程大学 | Video source tracing and tamper-proof method based on video coder/decoder |
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