CN115883679A - Block chain-based data secure transmission method and system - Google Patents

Block chain-based data secure transmission method and system Download PDF

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CN115883679A
CN115883679A CN202211489243.7A CN202211489243A CN115883679A CN 115883679 A CN115883679 A CN 115883679A CN 202211489243 A CN202211489243 A CN 202211489243A CN 115883679 A CN115883679 A CN 115883679A
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data
transmitted
level
encryption
standard
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CN115883679B (en
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刘超
肖鹏辉
邓艳
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Hunan Wanxiang Technology Co ltd
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Hunan Wanxiang Technology Co ltd
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Abstract

The invention relates to the field of data transmission, in particular to a safe data transmission method and a safe data transmission system based on a block chain, wherein the method comprises the steps of receiving data to be transmitted; extracting the actual number of keywords contained in the data to be transmitted according to a preset keyword cluster; determining the index level of the data to be transmitted according to the relation between the actual quantity and the preset first standard quantity and second standard quantity; setting an encryption grade based on the index grade, and encrypting data to be transmitted according to the encryption grade; and sending the encrypted data to be transmitted to each block chain node through a transmission channel for storage. And determining the index level of the data to be transmitted, and setting an encryption level according to the index level to complete the safe transmission of the data to be transmitted in each transmission channel, realize the efficient transmission of the data to be transmitted and ensure the transmission safety.

Description

Block chain-based data secure transmission method and system
Technical Field
The present invention relates to the field of data transmission, and in particular, to a method and a system for secure data transmission based on a block chain.
Background
At present, with the progress of technology, people's lives have become intelligent, networked and informationized, and under such conditions, the transmission of various kinds of information of people becomes more convenient, and in order to guarantee the information or property safety of people, it is important to provide a safe data transmission method and system.
Patent document CN111629000A discloses a method for secure data transmission based on a block chain, which includes a sending terminal sending information; carrying out public key encryption on the transmitted data by the block chain node point of the transmitting terminal, and broadcasting the encrypted data to other block chain nodes; receiving and decrypting the information; and the receiving end block link point stores the received data in one block, decrypts the data based on a decryption key of the receiving end block link point, judges whether the decrypted data contains an instruction or not after the decryption is successful, and if the decrypted data contains the instruction, carries out safety detection, and refuses to execute the instruction if the detection result is dangerous.
However, in the prior art, encryption is only performed simply, so that the security of each node of the block chain is greatly reduced.
Disclosure of Invention
Therefore, the invention provides a data secure transmission method and system based on a block chain, which can solve the problem of low security of block chain nodes in the prior art.
In order to achieve the above object, a first aspect of the present invention provides a method for secure data transmission based on a block chain, including:
receiving data to be transmitted;
extracting the actual number of keywords contained in the data to be transmitted according to a preset keyword cluster;
determining the index level of the data to be transmitted according to the relation between the actual quantity and the preset first standard quantity and second standard quantity;
setting an encryption grade based on the index grade, and encrypting data to be transmitted according to the encryption grade;
and sending the encrypted data to be transmitted to each block chain node through a transmission channel for storage.
Further, determining the index level of the data to be transmitted according to the relationship between the actual quantity and the preset first standard quantity and second standard quantity includes:
acquiring the actual number N of keywords contained in data to be transmitted;
presetting a first standard quantity N10 and a second standard quantity N20, wherein N10 is less than N20;
if the actual number N is less than or equal to the first standard number N10, determining the index level of the data to be transmitted as a third level;
if the first standard quantity N10 is smaller than the actual quantity N and smaller than or equal to the second standard quantity N20, determining the index level of the data to be transmitted as a second level;
and if the actual quantity N > the second standard quantity N20, determining the index level of the data to be transmitted as a first level.
Further, setting an encryption level based on the index hierarchy includes:
if the data to be transmitted belongs to the first level, the important data in the data to be transmitted is more, and the data to be transmitted is encrypted by adopting a first encryption level;
if the data to be transmitted belongs to the second level, the important data in the data to be transmitted is equal, and the data to be transmitted is encrypted by adopting a second encryption level;
if the data to be transmitted belongs to the third level, the important data in the data to be transmitted is less, and the data to be transmitted is encrypted by adopting the third encryption level.
Further, still include:
setting a transmission period, and counting the transmission time of the data to be transmitted after the data to be transmitted is encrypted by adopting a corresponding encryption grade;
presetting standard transmission time T0, and setting the actual transmission time of any data to be transmitted through a transmission channel as T;
if the actual transmission time T is larger than or equal to the standard transmission time T0, the transmission time is too long, and the encryption level of the data to be transmitted needs to be adjusted in the next transmission period.
Further, when the encryption level of the data to be transmitted needs to be adjusted in the next transmission period, the current network state is obtained, and if the current network state does not reach the transmission standard, the encryption level is upgraded;
if the current network state reaches the transmission standard, the encryption level is degraded.
Further, if the encryption level of the data to be transmitted is a first encryption level, if the network state meets the standard, updating the first encryption level to a second encryption level;
if the encryption level of the data to be transmitted is a second encryption level, if the network state does not meet the standard, updating the second encryption level to a first encryption level, and if the network state meets the standard, updating the second encryption level to a third encryption level;
and if the encryption level of the data to be transmitted is a third encryption level, updating the third encryption level to be a second encryption level if the network state does not meet the standard.
In another aspect, the present invention further provides a block chain-based data secure transmission system using the block chain-based data secure transmission method described above, where the system includes:
the receiving module is used for receiving data to be transmitted;
the extraction module is used for extracting the actual number of the keywords contained in the data to be transmitted according to a preset keyword cluster;
the determining module is used for determining the index level of the data to be transmitted according to the relation between the actual quantity and the preset first standard quantity and second standard quantity;
the encryption module is used for setting an encryption grade based on the index level and encrypting data to be transmitted according to the encryption grade;
and the sending module is used for sending the encrypted data to be transmitted to each block chain node through a transmission channel for storage.
Further, the determining module is further configured to obtain an actual number N of keywords included in the data to be transmitted;
presetting a first standard quantity N10 and a second standard quantity N20, wherein N10 is less than N20;
if the actual number N is less than or equal to the first standard number N10, determining the index level of the data to be transmitted as a third level;
if the first standard quantity N10 is smaller than the actual quantity N and smaller than or equal to the second standard quantity N20, determining the index level of the data to be transmitted as a second level;
and if the actual quantity N > the second standard quantity N20, determining the index level of the data to be transmitted as a first level.
Furthermore, the encryption module is further configured to indicate that more important data are in the data to be transmitted if the data to be transmitted belongs to the first level, and encrypt the data to be transmitted by using the first encryption level;
if the data to be transmitted belongs to the second level, the important data in the data to be transmitted is equal, and the data to be transmitted is encrypted by adopting a second encryption level;
if the data to be transmitted belongs to the third level, the important data in the data to be transmitted are less, and the data to be transmitted is encrypted by adopting the third encryption level.
The device further comprises a setting module and a counting module, wherein the setting module is used for setting a transmission period, and the counting module is used for counting the transmission time of the data to be transmitted after being encrypted by adopting the corresponding encryption grade;
presetting standard transmission time T0, and setting the actual transmission time of any data to be transmitted through a transmission channel as T;
if the actual transmission time T is larger than or equal to the standard transmission time T0, the transmission time is too long, and the encryption level of the data to be transmitted needs to be adjusted in the next transmission period;
if the actual transmission time T is less than the standard transmission time T0, the transmission time is in accordance with the requirement, and the original encryption grade is adopted for encryption and transmission in the next transmission period without adjustment.
Compared with the prior art, the method has the advantages that the keywords in the information to be transmitted are extracted, the number of the keywords in the data to be transmitted is determined, the index level of the data to be transmitted is further determined, the encryption level is set according to the index level, so that the data to be transmitted is safely transmitted in each transmission channel, the high-efficiency transmission of the data to be transmitted is realized, and the transmission safety is ensured.
Particularly, the actual number N of the keywords contained in the data to be transmitted is compared with the preset first standard number N10 and second standard number N20, so that the index level where the data to be transmitted is located is determined, the effective evaluation of the data to be transmitted is realized, and the subsequent effective transmission of the data to be transmitted is facilitated.
Particularly, different encryption levels are set for the corresponding levels of the data to be transmitted at different levels, so that the encrypted data to be transmitted is transmitted to each block chain node through a transmission channel, efficient transmission is realized, and the transmission efficiency is improved.
Particularly, the actual transmission time is compared with the standard transmission time to determine whether to adjust the encryption level of the data to be transmitted in the next transmission period, so that the data to be transmitted in different transmission periods can be efficiently adjusted, the data to be transmitted can select the corresponding encryption level according to the importance degree of the data to be transmitted, namely the number of the keywords, the data to be transmitted is encrypted according to the corresponding encryption level and then transmitted to each block chain node through the transmission channel, and the transmission fluency of the encrypted data to be transmitted is determined by comparing the transmission time with the standard transmission time so as to determine whether to adjust the encryption level of the data to be transmitted, so that the consistency of the transmission time of the data to be transmitted is ensured, the synchronization of the data of the chain nodes of each block is facilitated, and the accuracy of data storage is improved.
Particularly, whether the network state meets the transmission standard or not is determined to adjust the encryption level, the encryption level is determined according to the number of key words in the data to be transmitted for the first time, and on the basis, the encryption level is dynamically adjusted according to whether the network state meets the transmission standard or not, so that the data to be transmitted can be received by the block chain node within the specified time, the safety and the high efficiency of data transmission are ensured, and the transmission efficiency is improved.
Especially, when the network state is not good, the transmission data is easy to lose, so that the mode of increasing the encryption complexity is adopted when the transmission is carried out in the state, and the effectiveness of data transmission is ensured; if the network state is good, an encryption mode with low complexity can be selected for encryption so as to ensure that the data to be transmitted is quickly transmitted to the node corresponding to the block chain, and the transmission safety and the transmission efficiency of the data to be transmitted are greatly improved.
Drawings
Fig. 1 is a schematic flowchart of a block chain-based data secure transmission method according to an embodiment of the present invention;
fig. 2 is another schematic flow chart of a block chain-based data secure transmission method according to an embodiment of the present invention;
fig. 3 is a schematic structural diagram of a block chain-based data secure transmission system according to an embodiment of the present invention;
fig. 4 is another schematic structural diagram of a data secure transmission system based on a block chain 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.
It should be noted that in the description of the present invention, the terms of direction or positional relationship indicated by the terms "upper", "lower", "left", "right", "inner", "outer", etc. are based on the directions or positional relationships shown in the drawings, which are only for convenience of description, and do not indicate or imply that the device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention.
Furthermore, it should be noted that, in the description of the present invention, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
Referring to fig. 1, a block chain-based data secure transmission method according to an embodiment of the present invention includes:
step S100: receiving data to be transmitted;
step S200: extracting the actual number of keywords contained in the data to be transmitted according to a preset keyword cluster;
step S300: determining the index level of the data to be transmitted according to the relation between the actual quantity and the preset first standard quantity and second standard quantity;
step S400: setting an encryption grade based on the index grade, and encrypting data to be transmitted according to the encryption grade;
step S500: and sending the encrypted data to be transmitted to each block chain node through a transmission channel for storage.
Specifically, the data to be transmitted in the embodiment of the present invention may be files, tables, or other information data. The method comprises the steps that keywords are contained in a file to be transmitted, when the file to be transmitted is a plurality of transaction information, the keywords can be transaction amount, the transaction information which is higher than the set amount in the file to be transmitted can be extracted from data to be transmitted, the proportion of the extracted data information in the data to be transmitted is determined, and the index level of the data to be transmitted is determined. In the application scenario in the embodiment of the present invention, after information in any node of a plurality of blockchain nodes is changed, the changed information needs to be synchronized to other nodes of the blockchain and stored. In practical application, data information of the block chain nodes is synchronous, and a transmission channel is arranged between each node and other nodes to transmit data so as to realize data synchronization.
Specifically, the embodiment of the invention extracts the keywords in the information to be transmitted, determines the number of the keywords in the data to be transmitted, further determines the index level of the data to be transmitted, and sets the encryption level according to the index level, so as to complete the safe transmission of the data to be transmitted in each transmission channel, realize the efficient transmission of the data to be transmitted, and ensure the transmission safety.
Specifically, determining the index level of the data to be transmitted according to the relationship between the actual number and the preset first standard number and second standard number includes:
acquiring the actual number N of keywords contained in data to be transmitted;
presetting a first standard quantity N10 and a second standard quantity N20, wherein N10 is less than N20;
if the actual number N is less than or equal to the first standard number N10, determining the index level of the data to be transmitted as a third level;
if the first standard quantity N10 is smaller than the actual quantity N and smaller than or equal to the second standard quantity N20, determining the index level of the data to be transmitted as a second level;
and if the actual number N > the second standard number N20, determining the index level of the data to be transmitted as a first level.
Specifically, in the embodiment of the invention, the index level of the data to be transmitted is determined by comparing the actual number N of the keywords contained in the data to be transmitted with the preset first standard number N10 and second standard number N20, so that the data to be transmitted is effectively evaluated, and the subsequent effective transmission of the data to be transmitted is facilitated.
Specifically, setting the encryption level based on the index hierarchy includes:
if the data to be transmitted belongs to the first level, the important data in the data to be transmitted are more, and the data to be transmitted is encrypted by adopting a first encryption level;
if the data to be transmitted belongs to the second level, the important data in the data to be transmitted is equal, and the data to be transmitted is encrypted by adopting a second encryption level;
if the data to be transmitted belongs to the third level, the important data in the data to be transmitted is less, and the data to be transmitted is encrypted by adopting the third encryption level.
Specifically, the embodiment of the invention sets different encryption levels for the corresponding levels of the data to be transmitted at different levels, so as to realize that the encrypted data to be transmitted is transmitted to each block chain node through a transmission channel, realize efficient transmission and improve transmission efficiency.
Specifically, as shown in fig. 2, the embodiment of the present invention further includes:
step S600: setting a transmission period, and counting the transmission time of the data to be transmitted after being encrypted by adopting a corresponding encryption grade;
step S700: presetting standard transmission time T0, and setting the actual transmission time of any data to be transmitted through a transmission channel as T;
if the actual transmission time T is larger than or equal to the standard transmission time T0, the transmission time is too long, and the encryption level of the data to be transmitted needs to be adjusted in the next transmission period;
if the actual transmission time T is less than the standard transmission time T0, the transmission time is in accordance with the requirement, and the original encryption grade is adopted for encryption and transmission in the next transmission period without adjustment.
Specifically, the embodiment of the invention compares the actual transmission time with the standard transmission time to determine whether to adjust the encryption level of the data to be transmitted in the next transmission period, so as to realize efficient adjustment of the data to be transmitted in different transmission periods, so that the data to be transmitted selects the corresponding encryption level according to the importance degree of the data to be transmitted, namely the number of the keywords, the data to be transmitted is encrypted according to the corresponding encryption level and then transmitted to each block chain node through the transmission channel, and the transmission fluency of the encrypted data to be transmitted is determined by comparing the transmission time with the standard transmission time so as to determine whether to adjust the encryption level, so as to ensure the consistency of the transmission time of the data to be transmitted, facilitate synchronization of the data of each block chain link point and improve the accuracy of data storage.
Specifically, when the encryption level of the data to be transmitted needs to be adjusted in the next transmission period, the current network state is obtained, and if the current network state does not reach the transmission standard, the encryption level is upgraded;
if the current network state reaches the transmission standard, the encryption level is degraded.
Specifically, the encryption level is adjusted by determining whether the network state meets the transmission standard, the determination of the encryption level is determined according to the number of the keywords in the data to be transmitted for the first time, and on the basis, the encryption level in the embodiment of the invention is dynamically adjusted according to whether the network state meets the transmission standard, so that the block chain node can receive the data to be transmitted within the specified time, the safety and the high efficiency of data transmission are ensured, and the transmission efficiency is improved.
Specifically, if the encryption level of the data to be transmitted is a first encryption level, if the network state meets the standard, the first encryption level is updated to a second encryption level;
if the encryption level of the data to be transmitted is a second encryption level, if the network state does not meet the standard, updating the second encryption level to a first encryption level, and if the network state meets the standard, updating the second encryption level to a third encryption level;
and if the encryption level of the data to be transmitted is a third encryption level, updating the third encryption level to be a second encryption level if the network state does not meet the standard.
Specifically, in practical applications, the encryption complexity of the first encryption level is higher than that of the second encryption level, and is higher than that of the third encryption level.
Specifically, when the network state is not good, the transmission data is easy to lose, so that the mode of increasing the encryption complexity is adopted when the transmission is carried out in the state, and the validity of data transmission is ensured; if the network state is good, an encryption mode with low complexity can be selected for encryption, so that the data to be transmitted can be rapidly transmitted to the nodes corresponding to the block chain, and the transmission safety and the transmission efficiency of the data to be transmitted are greatly improved.
Specifically, as shown in fig. 3, an embodiment of the present invention further provides a data secure transmission system based on a blockchain, where the system includes:
a receiving module 10, configured to receive data to be transmitted;
the extraction module 20 is configured to extract an actual number of keywords included in the data to be transmitted according to a preset keyword cluster;
the determining module 30 is configured to determine an index level of the data to be transmitted according to a relationship between the actual number and a preset first standard number and a preset second standard number;
the encryption module 40 is used for setting an encryption level based on the index level and encrypting the data to be transmitted according to the encryption level;
and a sending module 50, configured to send the encrypted data to be transmitted to each blockchain node through a transmission channel for storage.
Specifically, the determining module is further configured to obtain an actual number N of keywords included in the data to be transmitted;
presetting a first standard quantity N10 and a second standard quantity N20, wherein N10 is less than N20;
if the actual number N is less than or equal to the first standard number N10, determining the index level of the data to be transmitted as a third level;
if the first standard quantity N10 is smaller than the actual quantity N and smaller than or equal to the second standard quantity N20, determining the index level of the data to be transmitted as a second level;
and if the actual number N > the second standard number N20, determining the index level of the data to be transmitted as a first level.
Specifically, the encryption module is further configured to, if the data to be transmitted belongs to a first level, indicate that more important data are present in the data to be transmitted, and encrypt the data to be transmitted at a first encryption level;
if the data to be transmitted belongs to the second level, the important data in the data to be transmitted is equal, and the data to be transmitted is encrypted by adopting a second encryption level;
if the data to be transmitted belongs to the third level, the important data in the data to be transmitted is less, and the data to be transmitted is encrypted by adopting the third encryption level.
Specifically, as shown in fig. 4, the embodiment of the present invention further includes a setting module 60 and a counting module 70, where the setting module is configured to set a transmission period, and the counting module is configured to count transmission time of data to be transmitted after being encrypted by using a corresponding encryption level;
presetting standard transmission time T0, and setting the actual transmission time of any data to be transmitted through a transmission channel as T;
if the actual transmission time T is larger than or equal to the standard transmission time T0, the transmission time is too long, and the encryption level of the data to be transmitted needs to be adjusted in the next transmission period;
if the actual transmission time T is less than the standard transmission time T0, the transmission time is in accordance with the requirement, and the original encryption grade is adopted for encryption and transmission in the next transmission period without adjustment.
The block chain-based data secure transmission system provided in the embodiment of the present invention is used for applying the block chain-based data secure transmission method described above, includes the same technical features, can achieve the same technical effects, and is not described herein again.
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 safe data transmission method based on a block chain is characterized by comprising the following steps:
receiving data to be transmitted;
extracting the actual number of keywords contained in the data to be transmitted according to a preset keyword cluster;
determining the index level of the data to be transmitted according to the relation between the actual quantity and the preset first standard quantity and second standard quantity;
setting an encryption grade based on the index grade, and encrypting data to be transmitted according to the encryption grade;
and sending the encrypted data to be transmitted to each block chain node through a transmission channel for storage.
2. The block chain based data security transmission method according to claim 1,
determining the index level of the data to be transmitted according to the relation between the actual number and the preset first standard number and second standard number comprises the following steps:
acquiring the actual number N of keywords contained in data to be transmitted;
presetting a first standard quantity N10 and a second standard quantity N20, wherein N10 is less than N20;
if the actual number N is less than or equal to the first standard number N10, determining the index level of the data to be transmitted as a third level;
if the first standard quantity N10 is smaller than the actual quantity N and smaller than or equal to the second standard quantity N20, determining the index level of the data to be transmitted as a second level;
and if the actual quantity N > the second standard quantity N20, determining the index level of the data to be transmitted as a first level.
3. The block chain based data secure transmission method according to claim 2,
setting an encryption level based on the index hierarchy includes:
if the data to be transmitted belongs to the first level, the important data in the data to be transmitted are more, and the data to be transmitted is encrypted by adopting a first encryption level;
if the data to be transmitted belongs to the second level, the important data in the data to be transmitted is equal, and the data to be transmitted is encrypted by adopting a second encryption level;
if the data to be transmitted belongs to the third level, the important data in the data to be transmitted is less, and the data to be transmitted is encrypted by adopting the third encryption level.
4. The method for safely transmitting data based on the blockchain according to claim 3, further comprising:
setting a transmission period, and counting the transmission time of the data to be transmitted after the data to be transmitted is encrypted by adopting a corresponding encryption grade;
presetting standard transmission time T0, and setting the actual transmission time of any data to be transmitted through a transmission channel as T;
if the actual transmission time T is larger than or equal to the standard transmission time T0, the transmission time is too long, and the encryption level of the data to be transmitted needs to be adjusted in the next transmission period.
5. The block chain based data secure transmission method according to claim 4,
when the encryption level of data to be transmitted needs to be adjusted in the next transmission period, the current network state is obtained, and if the current network state does not reach the transmission standard, the encryption level is upgraded;
if the current network state reaches the transmission standard, the encryption level is degraded.
6. The block chain based data security transmission method according to claim 5,
if the encryption level of the data to be transmitted is a first encryption level, if the network state meets the standard, updating the first encryption level to a second encryption level;
if the encryption level of the data to be transmitted is a second encryption level, if the network state does not meet the standard, updating the second encryption level to a first encryption level, and if the network state meets the standard, updating the second encryption level to a third encryption level;
and if the encryption level of the data to be transmitted is a third encryption level, updating the third encryption level to be a second encryption level if the network state does not meet the standard.
7. A block chain based data security transmission system applying the block chain based data security transmission method according to any one of claims 1 to 6, comprising:
the receiving module is used for receiving data to be transmitted;
the extraction module is used for extracting the actual number of the keywords contained in the data to be transmitted according to a preset keyword cluster;
the determining module is used for determining the index level of the data to be transmitted according to the relation between the actual quantity and the preset first standard quantity and second standard quantity;
the encryption module is used for setting an encryption grade based on the index level and encrypting data to be transmitted according to the encryption grade;
and the sending module is used for sending the encrypted data to be transmitted to each block chain node through a transmission channel for storage.
8. The system according to claim 7, wherein the determining module is further configured to obtain an actual number N of keywords included in the data to be transmitted;
presetting a first standard quantity N10 and a second standard quantity N20, wherein N10 is less than N20;
if the actual number N is less than or equal to the first standard number N10, determining the index level of the data to be transmitted as a third level;
if the first standard quantity N10 is smaller than the actual quantity N and smaller than or equal to the second standard quantity N20, determining the index level of the data to be transmitted as a second level;
and if the actual number N > the second standard number N20, determining the index level of the data to be transmitted as a first level.
9. The system for secure block chain-based data transmission according to claim 8,
the encryption module is also used for indicating that more important data are in the data to be transmitted if the data to be transmitted belongs to the first level, and encrypting the data to be transmitted by adopting the first encryption level;
if the data to be transmitted belongs to the second level, the important data in the data to be transmitted is equal, and the data to be transmitted is encrypted by adopting a second encryption level;
if the data to be transmitted belongs to the third level, the important data in the data to be transmitted is less, and the data to be transmitted is encrypted by adopting the third encryption level.
10. The system for the secure transmission of data based on a blockchain according to claim 9, further comprising a setting module and a statistical module, wherein the setting module is configured to set a transmission period, and the statistical module is configured to count transmission time of data to be transmitted after being encrypted by using a corresponding encryption level;
presetting standard transmission time T0, and setting the actual transmission time of any data to be transmitted through a transmission channel as T;
if the actual transmission time T is larger than or equal to the standard transmission time T0, the transmission time is too long, and the encryption level of the data to be transmitted needs to be adjusted in the next transmission period;
if the actual transmission time T is less than the standard transmission time T0, the transmission time is in accordance with the requirement, and the original encryption grade is adopted for encryption and transmission in the next transmission period without adjustment.
CN202211489243.7A 2022-11-25 2022-11-25 Data security transmission method and system based on block chain Active CN115883679B (en)

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