CN115118529A - Data transmission method based on block chain - Google Patents
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Abstract
The invention relates to the technical field of block chains, in particular to a data transmission method based on a block chain, which comprises the following steps: step S1, the data acquisition module acquires data and sends the acquired data to a block chain platform after the acquisition is finished; step S2, the block chain platform encrypts the data according to the received data and generates a first encryption key; step S3, the user side encrypts data according to the received first encryption key to obtain first encrypted data; step S4, the central control module identifies the data capacity according to the data collected by the data collection module and adjusts the data transmission monitoring frequency to a corresponding value according to the actual capacity of the data; and step S5, the central control module judges whether second encrypted data is added to the first target node according to the adjusted data leakage actual risk value. The invention realizes the improvement of the safety and the reliability of data transmission in the block chain.
Description
Technical Field
The invention relates to the technical field of block chains, in particular to a data transmission method based on a block chain.
Background
With the development of the blockchain technology, the application of the blockchain is more and more extensive, but in the process of the blockchain application, the safety problem of data transmission of the blockchain exists.
Chinese patent publication No.: CN 113987530A. Disclosed are a data transmission method and system, belonging to the block chain technical field, in particular to a data transmission method and system based on the block chain. The method comprises the following steps: encrypting data to be linked by using block chain encryption information to obtain first encrypted data; encrypting the first encrypted data by using an original secret key of the data acquisition equipment to obtain second encrypted data; and transmitting the second encrypted data to a data acquisition platform for data analysis service based on an NBIOT protocol. Therefore, the data transmission method and the data transmission system have the following problems: the security and reliability of data transmission in the block chain are insufficient.
Disclosure of Invention
Therefore, the invention provides a data transmission method based on a block chain, which is used for overcoming the problem that the safety and the reliability of data transmission in the block chain in the prior art are insufficient.
In order to achieve the above object, the present invention provides a data transmission method based on a block chain, including: step S1, the data acquisition module acquires data and sends the acquired data to the block chain platform after the acquisition is finished; step S2, the block chain platform encrypts the data according to the received data to generate a first encryption key and sends the generated first encryption key to the user terminal; step S3, the user side encrypts data according to the received first encryption key to obtain first encrypted data and sends the first encrypted data to a plurality of corresponding block chain data target nodes; step S4, when the block chain transmits data, the central control module identifies the capacity of the data according to the data acquired by the data acquisition module and adjusts the data transmission monitoring frequency to a corresponding value according to the actual capacity of the data, the central control module preliminarily judges whether to adjust the actual risk value of data leakage according to the actual data transmission speed reaching the target node and the actual capacity of the data block and adjusts the actual risk value of data leakage to the corresponding value according to the difference value between the actual data transmission speed and the preset data transmission speed when the judgment is finished; step S5, when the first target node receives the data, the central control module determines whether to add the second encrypted data to the first target node according to the adjusted data leakage actual risk value, and adjusts the encryption range of the second encrypted data to a corresponding value according to the difference between the adjusted data leakage actual risk value and the preset data leakage risk value when the determination is completed, and when the central control module completes the adjustment of the encryption range of the second encrypted data, the central control module secondarily adjusts the data monitoring frequency to a corresponding value according to the difference between the actual distance between the first target node and the second target node and the preset node distance.
Further, the central control module adjusts the monitoring frequency of the data according to the capacity E of the data block acquired by the data acquisition module, the central control module is provided with a preset first data block capacity E1 and a preset second data block capacity E2, wherein E1 is less than E2,
if E is less than or equal to E1, the central control module judges that the actual capacity of the data block is within the allowable range;
if E1 is larger than E and smaller than or equal to E2, the actual capacity of the central control module data block exceeds an allowable range, the difference value delta E between the actual capacity of the data block and the preset first data block capacity is calculated, the monitoring frequency of data transmission is adjusted according to the delta E, and delta E = E-E1 is set;
if E is larger than E2, the central control module judges that the actual capacity of the data block exceeds the allowable range, monitors the waiting time of the receiving end and judges whether to suspend the data transmission according to the waiting time.
Further, when the central control module completes the judgment of whether the data monitoring frequency is adjusted and the capacity E of the data block acquired by the data acquisition module meets E1 < E ≦ E2, the central control module adjusts the monitoring frequency of data transmission according to the difference delta E between the capacity of the actual data block and the capacity of the preset data block, and is provided with a preset first data block capacity difference delta E1, a preset second data block capacity delta E2, a preset first data monitoring frequency adjustment coefficient alpha 1, a preset second data monitoring frequency adjustment coefficient alpha 2 and a preset data monitoring frequency F0, wherein delta E1 < deltaE 2, 1 < alpha 2,
if the delta E is less than or equal to the delta E1, the central control module judges that the data monitoring frequency is not adjusted;
if delta E1 is less than delta E and less than delta E2, the central control module judges that the data monitoring frequency is adjusted by using alpha 1;
if delta E > -delta E2, the central control module determines to adjust the data monitoring frequency using alpha 2;
when the central controller adjusts the data monitoring frequency by using α i, i =1,2 is set, and the adjusted data monitoring frequency is denoted as F ', and F' = F0 × α i is set.
Further, when the central control module completes the adjustment of the data monitoring frequency and the data reaches the first target node, the central control module preliminarily determines whether to adjust the actual risk value of data leakage according to the actual data transmission speed reaching the target node and the actual data block capacity, the central control module is provided with a preset data transmission speed V0,
if V is less than or equal to V0 and E is more than E1, the central control module judges that the actual data transmission speed exceeds the allowable range, calculates the difference value delta V between the actual data transmission speed and the preset data transmission speed, adjusts the actual data leakage risk value to a corresponding value according to the delta V, and sets delta V = V0-V;
and if V is greater than V0 and E is less than or equal to E1, the central control module judges that the actual data transmission speed is within an allowable range and does not adjust the actual data leakage risk value.
Further, when the central control module finishes the determination of whether the data leakage risk exists, the actual transmission speed V of the data satisfies V not more than V0, and the actual capacity E of the data block satisfies E > E1, the central control module adjusts the preset data leakage risk value to a corresponding value according to the difference between the actual transmission speed of the data and the preset data transmission speed, the central control module is provided with a preset first data transmission speed difference Δ V1, a preset second data transmission speed difference Δ V2, a preset first data leakage risk value adjustment coefficient β 1, a preset second data leakage risk value adjustment coefficient β 2, and a preset data leakage risk value S0, wherein Δ V1 is less than Δ V2, 1 < β 2,
if the delta V is less than or equal to the delta V1, the central control module judges that the actual risk value of data leakage is not adjusted;
if delta V1 is less than delta V and less than or equal to delta V2, the central control module judges that the actual risk value of data leakage is adjusted by using beta 1;
if DeltaV is > DeltaV 2, the central control module judges that the data leakage actual risk value is adjusted by using beta 2;
when the central control module adjusts the data leakage actual risk value by using β j, j =1,2 is set, and the adjusted data leakage actual risk value is recorded as S ', and S' = S0 × (2 + β j)/3 is set.
Further, when the first target node receives the data, the central control module determines whether to add second encrypted data to the first target node according to the adjusted data leakage actual risk value, where the second encrypted data includes: the actual transmission speed from the user side to the first target node, the transmission speed of the preset data, the capacity of the data block, the adjusted actual risk value of data leakage and the distance from the first target node to the second target node, the central control module is provided with a preset first risk value S1 of data leakage and a preset second risk value S2 of data leakage, wherein S1 is less than S2,
if S' is less than or equal to S1, the central control module judges that second encrypted data are not added to the first target node;
if S1 is greater than S ' and less than or equal to S2, the central control module judges that second encrypted data are added to the first target node, calculates the difference value deltaS ' between the adjusted data leakage actual risk value and the preset risk value, and adjusts the encryption range of the second encrypted data to a corresponding value according to the deltaS ';
if S' > S2, the central control module judges whether to adjust the data monitoring frequency for the second time according to the actual distance between the first target node and the second target node of the data by adding the second encrypted data to the first target node.
Further, when the central control module completes the determination of whether to add the second encrypted data to the first target node, the central control module adjusts the encryption range of the second encrypted data to a corresponding value according to the difference between the adjusted actual risk value of data leakage and the preset risk value, the central control module is provided with a first actual risk value difference Δ S1 ', a preset second risk value difference Δ S2', a preset first encryption range adjustment coefficient γ 1, a preset encryption range adjustment coefficient γ 2 and a preset second encryption data encryption range R0, wherein Δ S1 '<Δs 2', 1 < γ 2,
if the delta S 'is less than or equal to the delta S1', the central control module judges that the encryption range of the second encrypted data is not adjusted;
if delta S1 ' <deltaS ' ≦ delta S2 ', the central control module determines to adjust the second encrypted data encryption range using gamma 1;
if Δ S '>. Δ S2', the central control module determines to adjust the encryption range of the second encrypted data using γ 2;
when the central control module adjusts the second encryption data encryption range by using γ k, setting k =1,2, and setting R '= R0 × (1 + γ k)/2 as the adjusted second encryption data encryption range is denoted as R'.
Further, when the central control module finishes adjusting the encryption range of the second encrypted data, the central control module judges whether the block chain server fails according to the difference value between the adjusted data leakage actual risk value and the preset risk value, the central control module is provided with a preset maximum data leakage risk value difference value delta Smax',
if the delta S 'is less than or equal to the delta Smax', the central control module judges that the block chain server has no fault;
and if the delta S '> [ delta ] Smax', the central control module judges that the block chain server has a fault and sends out a maintenance notice.
Further, when the central control module completes the adjustment of the encryption range of the second encrypted data, the central control module judges whether to perform secondary adjustment on the data monitoring frequency according to the actual distance D between the first target node and the second target node of the data, the central control module is provided with a preset node distance D0,
if D is not more than D0, the central control module judges that the data monitoring frequency is not adjusted for the second time;
if D is larger than D0, the central control module judges that the actual distance between the first target node and the second target node exceeds an allowable range, calculates the difference value delta D between the actual distance and the distance of the preset node, adjusts the data monitoring frequency to a corresponding value according to delta D, and sets delta D = D-D1.
Further, when the central control module completes the determination of whether to perform the secondary adjustment on the data monitoring frequency, the central control performs the secondary adjustment on the data monitoring frequency according to the difference between the actual distance between the first target node and the second target node and the preset node distance, the central control module is provided with a preset first node distance difference Δ D1, a preset second node distance difference Δ D2, a preset three-data monitoring frequency adjustment coefficient α 3 and a preset fourth data monitoring frequency adjustment coefficient α 4, wherein Δ D1 is smaller than Δ D2, 1 is larger than α 3 and smaller than α 4 and smaller than α 1 and smaller than α 2,
if the delta D is less than or equal to the delta D1, the central control module judges that the data monitoring frequency after the first adjustment is not adjusted;
if delta D1 is less than delta D and less than delta D2, the central control module performs secondary adjustment on the data monitoring frequency by using alpha 3;
if DeltaD > DeltaD 2, the central control module judges that alpha 4 is used for carrying out secondary adjustment on the data monitoring frequency;
when the central control module adjusts the data monitoring frequency by using α i, i =3,4 is set, the adjusted data monitoring frequency is recorded as F ", and F" = F' × α i is set.
Compared with the prior art, the method has the advantages that the monitoring frequency of the data can be adjusted through the preset data block capacity set by the central control module before the data are transmitted in the block chain by setting the preset data block capacity, the preset data monitoring frequency, the preset data transmission speed, the preset data leakage risk value and the preset node distance, the monitoring capability of stealing the data in the data transmission process is improved by adjusting the data monitoring frequency, the safety of data transmission is improved, when the data are transmitted in the block chain, the leakage risk value of the data is correspondingly adjusted through the preset data transmission speed set by the central control module and the actual data transmission speed, and when the first target node receives the data, the central control module secondarily adjusts the data monitoring frequency according to the distance between the first target node and the second target node, the safety of data transmission in the block chain is improved, and the safety and the reliability of data transmission in the block chain are improved.
Furthermore, the method of the invention can adjust the monitoring frequency of the data according to the size of the data block acquired by the data acquisition module by setting the preset first data block capacity and the preset second data block capacity, thereby improving the safety monitoring capability of the data in the data transmission process and further realizing the improvement of the safety and reliability of the data transmission in the block chain.
Furthermore, the method of the invention can adjust the monitoring frequency of data transmission according to the difference between the capacity of the actual data block and the capacity of the preset data block by setting the preset first data block capacity difference, the preset second data block capacity, the preset first data monitoring frequency adjustment coefficient, the preset second data monitoring frequency and the preset data monitoring frequency, thereby realizing the improvement of the data monitoring range, the monitoring capability of the stolen risk of the large-capacity data in the transmission process and further realizing the improvement of the safety and the reliability of the data transmission in the block chain.
Furthermore, by setting the preset data transmission speed, the method of the invention can preliminarily judge whether to adjust the risk value of data leakage according to the actual data transmission speed reaching the target node and the actual data block capacity, thereby improving the accurate adjustment capability of the data leakage risk and further improving the safety and reliability of data transmission in the block chain.
Furthermore, the method of the present invention adjusts the actual risk value of data leakage to a corresponding value according to the difference between the actual data transmission speed and the preset data transmission speed by setting the preset first data transmission speed difference value, the preset second data transmission speed difference value, the preset first data leakage risk value adjustment coefficient, the preset second data leakage risk value adjustment coefficient and the preset data leakage risk, so as to improve the accurate adjustment capability of the data leakage risk, realize the accurate monitoring of the safety of the data transmission process, and further realize the improvement of the safety and the reliability of the data transmission in the block chain.
Furthermore, the method of the present invention can determine whether to add the second encrypted data to the first target node according to the adjusted actual risk value of data leakage by setting the preset first data leakage risk value and the preset second data leakage risk value, thereby achieving the determination of whether to add the second encrypted data in the process of receiving data by the first target node, and further achieving the improvement of the security and reliability of data transmission in the block chain.
Furthermore, the method of the invention can adjust the encryption range of the second encrypted data to a corresponding value according to the difference between the adjusted actual risk value of data leakage and the preset risk value by setting the preset first data leakage risk value difference, the preset second data leakage risk value difference, the preset first encryption range adjustment coefficient, the preset encryption range adjustment coefficient and the preset second encrypted data encryption range, thereby improving the accurate adjustment capability of the encryption range of the second encrypted data, improving the transmission security of the first target node to the second target node, and further improving the security and reliability of data transmission in the block chain.
Furthermore, the method of the invention can judge whether the block chain server fails according to the difference between the adjusted actual risk value of data leakage and the preset risk value by setting the difference between the preset maximum actual risk value of data leakage, thereby improving the identification capability of the failure and further realizing the improvement of the safety and reliability of data transmission in the block chain.
Furthermore, the method of the invention can judge whether to adjust the data monitoring frequency for the second time according to the actual distance between the first target node and the second target node of the data by setting the preset node distance, thereby realizing the improvement of the safety of data transmission from the first target node to the second target node and further realizing the improvement of the safety and reliability of data transmission in the block chain.
Furthermore, the method of the invention can carry out secondary adjustment on the data monitoring frequency according to the difference between the actual distance between the first target node and the second target node and the distance between the preset nodes by setting the preset first node distance difference, the preset second node distance difference, the preset three-data monitoring frequency adjustment coefficient and the preset fourth data monitoring frequency adjustment coefficient, thereby further improving the data transmission safety and further realizing the improvement on the safety and the reliability of data transmission in the block chain.
Drawings
Fig. 1 is a flowchart of a data transmission method based on a block chain according to an embodiment of the present invention;
fig. 2 is a flowchart illustrating a step S4 of the method for data transmission based on a blockchain according to an embodiment of the present invention;
fig. 3 is a detailed flowchart of step S5 of the data transmission method based on block chains according to the embodiment of the present invention;
fig. 4 is a detailed flowchart of step S3 of the data transmission method based on a blockchain according to the 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.
Referring to fig. 1, fig. 2, fig. 3 and fig. 4, which are a flowchart of a data transmission method based on a block chain, a detailed flowchart of step S4, a detailed flowchart of step S5 and a detailed flowchart of step S3 according to an embodiment of the present invention, respectively, the data transmission method based on a block chain includes:
step S1, the data acquisition module acquires data and sends the acquired data to the block chain platform after the acquisition is finished;
step S2, the blockchain platform encrypts data according to the received data to generate a first encryption key and sends the generated first encryption key to the user side;
step S3, the user side encrypts data according to the received first encryption key to obtain first encrypted data and sends the first encrypted data to a plurality of corresponding block chain data target nodes;
step S4, when the block chain transmits data, the central control module identifies the capacity of the data according to the data acquired by the data acquisition module and adjusts the data transmission monitoring frequency to a corresponding value according to the actual capacity of the data, the central control module preliminarily judges whether to adjust the actual risk value of data leakage according to the actual transmission speed of the data reaching the target node and the actual capacity of the data block and adjusts the actual risk value of data leakage to the corresponding value according to the difference between the actual transmission speed of the data and the preset data transmission speed when the judgment is finished;
step S5, when the first target node receives the data, the central control module determines whether to add the second encrypted data to the first target node according to the adjusted data leakage actual risk value, and adjusts the encryption range of the second encrypted data to a corresponding value according to the difference between the adjusted data leakage actual risk value and the preset data leakage risk value when the determination is completed, and when the central control module completes the adjustment of the encryption range of the second encrypted data, the central control module secondarily adjusts the data monitoring frequency to a corresponding value according to the difference between the actual distance between the first target node and the second target node and the preset node distance.
The method of the invention can adjust the monitoring frequency of the data through the preset data block capacity set by the central control module before the data is transmitted in the block chain by setting the preset data block capacity, the preset data monitoring frequency, the preset data transmission speed, the preset data leakage risk value and the preset node distance, improves the monitoring capability of stealing the data in the data transmission process by adjusting the data monitoring frequency, improves the safety of data transmission, correspondingly adjusts the leakage risk value of the data through the preset data transmission speed set by the central control module and the actual transmission speed of the data when the data is transmitted in the block chain, and secondarily adjusts the data monitoring frequency according to the distance between the first target node and the second target node when the first target node receives the data, the safety of data transmission in the block chain is improved, and the safety and the reliability of data transmission in the block chain are improved.
Referring to fig. 1, the central control module adjusts the monitoring frequency of the data according to the capacity E of the data block acquired by the data acquisition module, and the central control module has a preset first data block capacity E1 and a preset second data block capacity E2, where E1 is less than E2,
if E is less than or equal to E1, the central control module judges that the actual capacity of the data block is within an allowable range;
if E1 is larger than E and smaller than or equal to E2, the actual capacity of the central control module data block exceeds an allowable range, the difference value delta E between the actual capacity of the data block and the preset first data block capacity is calculated, the monitoring frequency of data transmission is adjusted according to the delta E, and delta E = E-E1 is set;
if E is larger than E2, the central control module judges that the actual capacity of the data block exceeds the allowable range, monitors the waiting time of the receiving end and judges whether to suspend the data transmission according to the waiting time.
According to the method, the preset first data block capacity and the preset second data block capacity are set, the monitoring frequency of the data can be adjusted according to the size of the data block acquired by the data acquisition module, the safety monitoring capability of the data in the data transmission process is improved, and the safety and the reliability of data transmission in a block chain are further improved.
As shown in fig. 1, when the central control module completes the determination of whether to adjust the data monitoring frequency and the capacity E of the data block acquired by the data acquisition module satisfies E1 < E ≦ E2, the central control module adjusts the monitoring frequency of data transmission according to the difference Δ E between the capacity of the actual data block and the capacity of the preset data block, and the central control module is provided with a preset first data block capacity difference Δ E1, a preset second data block capacity Δ E2, a preset first data monitoring frequency adjustment coefficient α 1, a preset second data monitoring frequency adjustment coefficient α 2, and a preset data monitoring frequency F0, where E1 is less than Δ E2, and 1 < α 2,
if the delta E is less than or equal to the delta E1, the central control module judges that the data monitoring frequency is not adjusted;
if delta E1 is less than delta E and less than delta E2, the central control module judges that the data monitoring frequency is adjusted by using alpha 1;
if delta E > -delta E2, the central control module determines to adjust the data monitoring frequency using alpha 2;
when the central controller adjusts the data monitoring frequency by using α i, i =1,2 is set, and the adjusted data monitoring frequency is denoted as F ', and F' = F0 × α i is set.
According to the method, the difference value of the capacity of the preset first data block, the capacity of the preset second data block, the regulation coefficient of the preset first data monitoring frequency, the preset second data monitoring frequency and the preset data monitoring frequency are set, so that the monitoring frequency of data transmission can be regulated according to the difference value of the capacity of the actual data block and the capacity of the preset data block, the improvement of the data monitoring range is realized, the monitoring capability of the stolen risk of the large-capacity data in the transmission process is realized, and the safety and the reliability of the data transmission in a block chain are further improved.
Continuing to refer to fig. 1 and fig. 2, when the central control module completes the adjustment of the data monitoring frequency and the data reaches the first target node, the central control module preliminarily determines whether to adjust the risk value of data leakage according to the actual data transmission speed reaching the target node and the actual data block capacity, the central control module is provided with a preset data transmission speed V0,
if V is less than or equal to V0 and E is more than E1, the central control module judges that the actual data transmission speed exceeds the allowable range, calculates the difference value delta V between the actual data transmission speed and the preset data transmission speed, adjusts the actual data leakage risk value to a corresponding value according to the delta V, and sets delta V = V0-V;
and if V is greater than V0 and E is less than or equal to E1, the central control module judges that the actual data transmission speed is within an allowable range and does not adjust the actual data leakage risk value.
According to the method, the preset data transmission speed is set, whether the risk value of data leakage exists can be preliminarily judged according to the actual data transmission speed reaching the target node and the actual data block capacity, the accurate adjustment capability of the data leakage risk is improved, and the safety and the reliability of data transmission in a block chain are further improved.
Continuing to refer to fig. 2, when the central control module completes the determination of whether there is a data leakage risk, and the actual transmission speed V of the data satisfies V ≦ V0 and the actual capacity E of the data block satisfies E1, the central control module adjusts the actual data leakage risk value to a corresponding value according to the difference between the actual data transmission speed and the preset data transmission speed, and the central control module is provided with a preset first data transmission speed difference Δ V1, a preset second data transmission speed difference Δ V2, a preset first data leakage risk value adjustment coefficient β 1, a preset second data leakage risk value adjustment coefficient β 2, and a preset data leakage risk S0, where Δ V1 is less than Δ V2, 1 < β 2,
if the delta V is less than or equal to the delta V1, the central control module judges that the actual risk value of data leakage is not adjusted;
if the delta V1 is smaller than the delta V and is equal to or less than the delta V2, the central control module judges that the data leakage actual risk value is adjusted by using beta 1;
if DeltaV > DeltaV 2, the central control module judges that the data leakage actual risk value is adjusted by using beta 2;
when the central control module adjusts the data leakage actual risk value by using β j, j =1,2 is set, and the adjusted data leakage actual risk value is recorded as S ', and S' = S0 × (2 + β j)/3 is set.
According to the method, the difference value of the data transmission speed is preset, the difference value of the second data transmission speed is preset, the adjustment coefficient of the first data leakage risk value is preset, the adjustment coefficient of the second data leakage risk value is preset, and the preset data leakage risk is set, so that the actual data leakage risk value can be adjusted to the corresponding value according to the difference value of the actual data transmission speed and the preset data transmission speed, the accurate adjustment capability of the data leakage risk is improved, the accurate safety monitoring of the data transmission process is realized, and the safety and the reliability of data transmission in a block chain are further improved.
As shown in fig. 3, when the first target node receives the data, the central control module determines whether to add second encrypted data to the first target node according to the adjusted actual risk value of data leakage, where the second encrypted data includes: the actual transmission speed from the user side to the first target node, the transmission speed of the preset data, the capacity of the data block, the adjusted actual risk value of data leakage and the distance from the first target node to the second target node, the central control module is provided with a preset first risk value S1 of data leakage and a preset second risk value S2 of data leakage, wherein S1 is less than S2,
if S' is less than or equal to S1, the central control module judges that second encrypted data are not added to the first target node;
if S1 is greater than S ' and less than or equal to S2, the central control module judges that second encrypted data are added to the first target node, calculates the difference value deltaS ' between the adjusted data leakage actual risk value and the preset risk value, and adjusts the encryption range of the second encrypted data to a corresponding value according to the deltaS ';
if S' > S2, the central control module judges whether to adjust the data monitoring frequency for the second time according to the actual distance between the first target node and the second target node of the data by adding the second encrypted data to the first target node.
According to the method, the preset first data leakage risk value and the preset second data leakage risk value are set, whether the second encrypted data is added to the first target node or not can be judged according to the adjusted data leakage actual risk value, the judgment of whether the second encrypted data is added or not in the data receiving process of the first target node is achieved, and the safety and the reliability of data transmission in the block chain are further improved.
Continuing to refer to fig. 3, when the central control module completes the determination of whether to add the second encrypted data to the first target node, the central control module adjusts the encryption range of the second encrypted data to a corresponding value according to the difference between the adjusted actual risk value of data leakage and the preset risk value, and the central control module is provided with a first actual risk value difference Δ S1 ', a preset second risk value difference Δ S2', a preset first encryption range adjustment coefficient γ 1, a preset encryption range adjustment coefficient γ 2, and a preset second encryption data encryption range R0, where Δ S1 '<Δs 2', 1 < γ 2,
if the delta S 'is less than or equal to the delta S1', the central control module judges that the encryption range of the second encrypted data is not adjusted;
if Δ S1 ' <ΔS ' ≦ Δ S2 ', the central control module determines to adjust the second encrypted data encryption range using γ 1;
if Δ S '> [ Δ S2', the central control module determines to adjust the encryption range of the second encrypted data using γ 2;
when the central control module adjusts the second encryption data encryption range by using γ k, setting k =1,2, and setting R '= R0 × (1 + γ k)/2 as the adjusted second encryption data encryption range is denoted as R'.
According to the method, the preset first data leakage risk value difference value, the preset second data leakage risk value difference value, the preset first encryption range adjusting coefficient, the preset encryption range adjusting coefficient and the preset second encryption data encryption range are set, the encryption range of the second encryption data can be adjusted to a corresponding value according to the difference between the adjusted data leakage actual risk value and the preset risk value, the accurate adjusting capability of the encryption range of the second encryption data is improved, the transmission safety of the first target node to the second target node is improved, and the safety and the reliability of data transmission in a block chain are further improved.
Referring to fig. 1, when the central control module completes the adjustment of the encryption range of the second encrypted data, the central control module determines whether the blockchain server fails according to the difference between the adjusted actual risk value of data leakage and the preset risk value, the central control module has a preset maximum risk value difference Δ Smax',
if the delta S 'is less than or equal to the delta Smax', the central control module judges that the block chain server has no fault;
and if the delta S '> [ delta ] Smax', the central control module judges that the block chain server has a fault and sends out a maintenance notice.
According to the method, whether the block chain server fails or not can be judged according to the difference value between the adjusted actual risk value of data leakage and the preset risk value by setting the preset maximum data leakage risk value difference value, so that the fault identification capability is improved, and the safety and the reliability of data transmission in the block chain are further improved.
Continuing to refer to fig. 1, when the central control module completes the adjustment of the encryption range of the second encrypted data, the central control module determines whether to perform the secondary adjustment on the data monitoring frequency according to the actual distance D between the first target node and the second target node of the data, the central control module has a preset node distance D0,
if D is not more than D0, the central control module judges that the data monitoring frequency is not adjusted for the second time;
if D is larger than D0, the central control module judges that the actual distance between the first target node and the second target node exceeds an allowable range, calculates the difference value Delta D between the actual distance and the preset node distance, adjusts the data monitoring frequency to a corresponding value according to Delta D, and sets Delta D = D-D1.
According to the method, whether the data monitoring frequency is adjusted for the second time or not can be judged according to the actual distance between the first target node and the second target node of the data by setting the preset node distance, so that the safety of data transmission from the first target node to the second target node is improved, and the safety and the reliability of data transmission in a block chain are further improved.
Referring to fig. 3, when the central control module completes the determination of whether to perform the secondary adjustment on the data monitoring frequency, the central control performs the secondary adjustment on the data monitoring frequency according to the difference between the actual distance between the first target node and the second target node and the preset node distance, and the central control module is provided with a preset first node distance difference Δ D1, a preset second node distance difference Δ D2, a preset three-data monitoring frequency adjustment coefficient α 3, and a preset fourth data monitoring frequency adjustment coefficient α 4, wherein Δ D1 is less than Δ D2, 1 < α 3 < α 4 < α 1 < α 2,
if the delta D is less than or equal to the delta D1, the central control module judges that the data monitoring frequency after the first adjustment is not adjusted;
if delta D1 is less than delta D and less than delta D2, the central control module performs secondary adjustment on the data monitoring frequency by using alpha 3;
if DeltaD > DeltaD 2, the central control module judges that alpha 4 is used for carrying out secondary adjustment on the data monitoring frequency;
when the central control module adjusts the data monitoring frequency by using α i, i =3,4 is set, the adjusted data monitoring frequency is recorded as F ", and F" = F' × α i is set.
According to the method, the data monitoring frequency can be secondarily regulated according to the difference value between the actual distance between the first target node and the second target node and the distance between the preset nodes by setting the preset first node distance difference value, the preset second node distance difference value, the preset third data monitoring frequency regulation coefficient and the preset fourth data monitoring frequency regulation coefficient, so that the data transmission safety is further improved, and the safety and the reliability of data transmission in a block chain are further improved.
Example 1
In the data transmission method based on the block chain according to the embodiment of the present invention, when the central control module completes the determination of whether to adjust the data monitoring frequency, the central control module adjusts the monitoring frequency of data transmission according to the difference Δ E between the capacity of the actual data block and the capacity of the preset data block, and the central control module is provided with a preset first data block capacity difference Δ E1, a preset second data block capacity difference Δ E2, a preset first data monitoring frequency adjustment coefficient α 1, a preset second data monitoring frequency α 2, and a preset data monitoring frequency F0, where Δ E1=15G, Δ E2=20G, α 1=1.1, α 2=1.2, and F0=2Hz,
in this embodiment, Δ E =18G is obtained by the central control module, and at this time, the central control module determines that Δ E1 is less than Δ E and less than Δ E2 and adjusts the data monitoring frequency by using α 1, and the adjusted data monitoring frequency is denoted as F ', and F' =2Hz × 1.1=2.2Hz is set.
According to the method, the monitoring frequency of data transmission can be adjusted by setting the preset first data block capacity difference value, the preset second data block capacity, the preset first data monitoring frequency adjusting coefficient, the preset second data monitoring frequency and the preset data monitoring frequency, so that the data monitoring range is improved, the monitoring capability of the stolen risk of the large-capacity data in the transmission process is realized, and the safety and the reliability of data transmission in a block chain are further improved.
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 easily understood by those skilled in the art that the scope of the present invention is obviously 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 (10)
1. A data transmission method based on a block chain is characterized by comprising the following steps:
step S1, the data acquisition module acquires data and sends the acquired data to the block chain platform after the acquisition is finished;
step S2, the blockchain platform encrypts data according to the received data to generate a first encryption key and sends the generated first encryption key to the user side;
step S3, the user side encrypts data according to the received first encryption key to obtain first encrypted data and sends the first encrypted data to a plurality of corresponding block chain data target nodes;
step S4, when the block chain transmits data, the central control module identifies the capacity of the data according to the data acquired by the data acquisition module and adjusts the data transmission monitoring frequency to a corresponding value according to the actual capacity of the data, the central control module preliminarily judges whether to adjust the actual risk value of data leakage according to the actual transmission speed of the data reaching the target node and the actual capacity of the data block and adjusts the actual risk value of data leakage to the corresponding value according to the difference between the actual transmission speed of the data and the preset data transmission speed when the judgment is finished;
step S5, when the first target node receives the data, the central control module determines whether to add the second encrypted data to the first target node according to the adjusted actual risk value of data leakage, and adjusts the encryption range of the second encrypted data to a corresponding value according to the difference between the adjusted actual risk value of data leakage and the preset risk value of data leakage when the determination is completed, and when the central control module completes the adjustment of the encryption range of the second encrypted data, the central control module secondarily adjusts the data monitoring frequency to a corresponding value according to the difference between the actual distance between the first target node and the second target node and the preset node distance.
2. The blockchain-based data transmission method according to claim 1, wherein the central control module adjusts a monitoring frequency of the data according to a capacity E of the data blocks collected by the data collection module, and the central control module is provided with a preset first data block capacity E1 and a preset second data block capacity E2, wherein E1 < E2,
if E is less than or equal to E1, the central control module judges that the actual capacity of the data block is within an allowable range;
if E1 is larger than E and smaller than or equal to E2, the actual capacity of the central control module data block exceeds an allowable range, the difference value delta E between the actual capacity of the data block and the preset first data block capacity is calculated, the monitoring frequency of data transmission is adjusted according to the delta E, and delta E = E-E1 is set;
if E is larger than E2, the central control module judges that the actual capacity of the data block exceeds the allowable range, monitors the waiting time of the receiving end and judges whether to suspend the data transmission according to the waiting time.
3. The method of claim 2, wherein when the central control module determines whether to adjust the data monitoring frequency and the capacity E of the data block collected by the data collection module satisfies E1 < E ≦ E2, the central control module adjusts the monitoring frequency of the data transmission according to the difference Δ E between the capacity of the actual data block and the capacity of the preset data block, and the central control module is provided with a preset first data block capacity difference Δ E1, a preset second data block capacity Δ E2, a preset first data monitoring frequency adjustment coefficient α 1, a preset second data monitoring frequency adjustment coefficient α 2, and a preset data monitoring frequency F0, wherein Δ E1 < [ delta ] E2, and 1 < α 2,
if the delta E is less than or equal to the delta E1, the central control module judges that the data monitoring frequency is not adjusted;
if delta E1 is less than delta E and less than delta E2, the central control module judges that the data monitoring frequency is adjusted by using alpha 1;
if delta E > -delta E2, the central control module determines to adjust the data monitoring frequency using alpha 2;
when the central controller adjusts the data monitoring frequency by using α i, i =1,2 is set, and the adjusted data monitoring frequency is denoted as F ', and F' = F0 × α i is set.
4. The blockchain-based data transmission method according to claim 3, wherein when the central control module completes the adjustment of the data monitoring frequency and data reaches a first target node, the central control module preliminarily determines whether to adjust the actual risk value of data leakage according to an actual data transmission speed reaching the target node and an actual data block capacity, the central control module is provided with a preset data transmission speed V0,
if V is less than or equal to V0 and E is more than E1, the central control module judges that the actual data transmission speed exceeds the allowable range, calculates the difference value delta V between the actual data transmission speed and the preset data transmission speed, adjusts the actual data leakage risk value to a corresponding value according to the delta V, and sets delta V = V0-V;
and if V is greater than V0 and E is less than or equal to E1, the central control module judges that the actual data transmission speed is within an allowable range and does not adjust the actual data leakage risk value.
5. The block chain-based data transmission method according to claim 4, wherein when the central control module completes the determination of whether there is a risk of data leakage and the actual transmission speed V of the data satisfies V0 and the actual capacity E of the data block satisfies E > E1, the central control module adjusts the actual risk value of data leakage to a corresponding value according to the difference between the actual transmission speed of the data and a preset data transmission speed, and the central control module is provided with a preset first data transmission speed difference Δ V1, a preset second data transmission speed difference Δ V2, a preset first data leakage risk value adjustment coefficient β 1, a preset second data leakage risk value adjustment coefficient β 2, and a preset data leakage risk value S0, wherein Δ V1 is less than Δ V2, 1 < β 2,
if the delta V is less than or equal to the delta V1, the central control module judges that the actual risk value of data leakage is not adjusted;
if delta V1 is less than delta V and less than or equal to delta V2, the central control module judges that the actual risk value of data leakage is adjusted by using beta 1;
if DeltaV > DeltaV 2, the central control module judges that the data leakage actual risk value is adjusted by using beta 2;
when the central control module adjusts the data leakage actual risk value by using β j, j =1,2 is set, and the adjusted data leakage actual risk value is recorded as S ', and S' = S0 × (2 + β j)/3 is set.
6. The blockchain-based data transmission method according to claim 5, wherein when the first target node receives the data, the central control module determines whether to add second encrypted data to the first target node according to the adjusted actual risk value of data leakage, where the second encrypted data includes: the actual transmission speed from the user side to the first target node, the transmission speed of the preset data, the capacity of the data block, the adjusted actual risk value of data leakage and the distance from the first target node to the second target node, the central control module is provided with a preset first risk value S1 of data leakage and a preset second risk value S2 of data leakage, wherein S1 is less than S2,
if S' is less than or equal to S1, the central control module judges that second encrypted data are not added to the first target node;
if S1 is greater than S ' and less than or equal to S2, the central control module judges that second encrypted data are added to the first target node, calculates the difference value deltaS ' between the adjusted data leakage actual risk value and the preset risk value, and adjusts the encryption range of the second encrypted data to a corresponding value according to the deltaS ';
if S' > S2, the central control module judges whether to adjust the data monitoring frequency for the second time according to the actual distance between the first target node and the second target node of the data by adding the second encrypted data to the first target node.
7. The blockchain-based data transmission method according to claim 6, wherein when the central control module completes the determination of whether to add the second encrypted data at the first target node, the central control module adjusts the encryption range of the second encrypted data to a corresponding value according to a difference between the adjusted actual risk value of data leakage and a preset risk value, the central control module is provided with a first data leakage risk value difference Δ S1 ', a preset second data leakage risk value difference Δ S2', a preset first encryption range adjustment coefficient γ 1, a preset encryption range adjustment coefficient γ 2, and a preset second encrypted data encryption range R0, wherein Δ S1 '<ΔS 2', 1 < γ 2,
if the delta S 'is less than or equal to the delta S1', the central control module judges that the encryption range of the second encrypted data is not adjusted;
if Δ S1 ' <ΔS ' ≦ Δ S2 ', the central control module determines to adjust the second encrypted data encryption range using γ 1;
if Δ S '> [ Δ S2', the central control module determines to adjust the encryption range of the second encrypted data using γ 2;
when the central control module adjusts the second encryption data encryption range by using γ k, setting k =1,2, and setting R '= R0 × (1 + γ k)/2 as the adjusted second encryption data encryption range is denoted as R'.
8. The blockchain-based data transmission method according to claim 7, wherein when the central control module completes the adjustment of the encryption range of the second encrypted data, the central control module determines whether the blockchain server is faulty according to a difference between the adjusted actual risk value of data leakage and a preset risk value, the central control module has a preset maximum risk value difference Δ Smax',
if the delta S 'is less than or equal to the delta Smax', the central control module judges that the block chain server has no fault;
and if the delta S '> [ delta ] Smax', the central control module judges that the block chain server has a fault and sends out a maintenance notice.
9. The blockchain-based data transmission method according to claim 8, wherein when the central control module completes the adjustment of the encryption range of the second encrypted data, the central control module determines whether to perform a secondary adjustment on the data monitoring frequency according to an actual distance D between a first target node and a second target node of the data, the central control module is provided with a preset node distance D0,
if D is not more than D0, the central control module judges that the data monitoring frequency is not adjusted for the second time;
if D is larger than D0, the central control module judges that the actual distance between the first target node and the second target node exceeds an allowable range, calculates the difference value Delta D between the actual distance and the preset node distance, adjusts the data monitoring frequency to a corresponding value according to Delta D, and sets Delta D = D-D1.
10. The block chain-based data transmission method according to claim 9, wherein the central control module secondarily adjusts the data monitoring frequency according to a difference between an actual distance between the first target node and the second target node and a preset node distance when the central control module completes the determination of whether to secondarily adjust the data monitoring frequency, the central control module is provided with a preset first node distance difference Δ D1, a preset second node distance difference Δ D2, a preset three data monitoring frequency adjustment coefficient α 3, and a preset fourth data monitoring frequency adjustment coefficient α 4, where Δ D1 is less than Δ D2, 1 < α 3 < α 4 < α 1 < α 2,
if the delta D is less than or equal to the delta D1, the central control module judges that the data monitoring frequency after the first adjustment is not adjusted;
if delta D1 is less than delta D and less than delta D2, the central control module performs secondary adjustment on the data monitoring frequency by using alpha 3;
if DeltaD > DeltaD 2, the central control module judges that alpha 4 is used for carrying out secondary adjustment on the data monitoring frequency;
when the central control module adjusts the data monitoring frequency by using α i, i =3,4 is set, the adjusted data monitoring frequency is recorded as F ", and F" = F' × α i is set.
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