CN111191253A - Data encryption combination method - Google Patents
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- CN111191253A CN111191253A CN201910411228.2A CN201910411228A CN111191253A CN 111191253 A CN111191253 A CN 111191253A CN 201910411228 A CN201910411228 A CN 201910411228A CN 111191253 A CN111191253 A CN 111191253A
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- 238000012545 processing Methods 0.000 claims abstract description 18
- 238000012163 sequencing technique Methods 0.000 claims description 6
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- 238000005259 measurement Methods 0.000 claims description 3
- 230000005540 biological transmission Effects 0.000 description 2
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- ZXQYGBMAQZUVMI-GCMPRSNUSA-N gamma-cyhalothrin Chemical compound CC1(C)[C@@H](\C=C(/Cl)C(F)(F)F)[C@H]1C(=O)O[C@H](C#N)C1=CC=CC(OC=2C=CC=CC=2)=C1 ZXQYGBMAQZUVMI-GCMPRSNUSA-N 0.000 description 1
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F21/00—Security arrangements for protecting computers, components thereof, programs or data against unauthorised activity
- G06F21/60—Protecting data
- G06F21/602—Providing cryptographic facilities or services
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L9/00—Cryptographic mechanisms or cryptographic arrangements for secret or secure communications; Network security protocols
- H04L9/06—Cryptographic mechanisms or cryptographic arrangements for secret or secure communications; Network security protocols the encryption apparatus using shift registers or memories for block-wise or stream coding, e.g. DES systems or RC4; Hash functions; Pseudorandom sequence generators
- H04L9/0618—Block ciphers, i.e. encrypting groups of characters of a plain text message using fixed encryption transformation
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Abstract
The invention relates to a data encryption combination method, which comprises the following steps: s1: performing hierarchical encryption on the original data based on the encryption level; s2: and carrying out data combination storage on the encrypted original data. The invention can carry out hierarchical selection of encryption modes, thereby improving the encryption efficiency to the maximum extent; the data after encryption processing is combined based on the encryption grade, and then the encrypted data is processed subsequently, so that the system efficiency is greatly improved.
Description
[ technical field ] A method for producing a semiconductor device
The invention belongs to the field of data encryption, and particularly relates to a data encryption combination method.
[ background of the invention ]
During the transmission and storage process, the data is directly encrypted by the data using or transmitting terminal (such as personal computer, server, etc.). The advantages are that: the data terminal generally has very strong computing power and high encryption efficiency. The disadvantages are that: 1. once a device is infected with a trojan or virus program, encryption algorithms and keys may be exposed, resulting in data encryption failure. In the network transmission process, if the key needs to be transmitted at the same time, the data and the key may be intercepted by others, resulting in data leakage. If a separate external device is used to encrypt and decrypt the data. The encryption and decryption device is separated from the data using device, and if the encryption and decryption device is not acquired by others, the security of encryption is very high. However, if a complex encryption algorithm is adopted or the amount of encrypted data is large, a high-performance encryption and decryption device is required, the cost is high, the size of an independent device is inevitably large, flexibility and portability cannot be realized, and in addition, if a portable encryption and decryption device needs to be manufactured, the balance between the efficiency and the energy consumption is difficult to be considered. Based on the problems, a new data encryption combination method is needed, and the invention can perform hierarchical selection of encryption modes, thereby improving the encryption efficiency to the maximum extent; the data after encryption processing is combined based on the encryption grade, and then the encrypted data is processed subsequently, so that the system efficiency is greatly improved.
[ summary of the invention ]
In order to solve the above problems in the prior art, the present invention provides a data encryption combination method, which includes the following steps:
s1: performing hierarchical encryption on the original data based on the encryption level;
s2: and carrying out data combination storage on the encrypted original data.
Further, the step S1 is specifically: and if the encryption level is less than the first encryption level, performing hierarchical encryption on the original data based on the encryption level.
Further, the performing hierarchical encryption on the original data based on the encryption level specifically includes: carrying out nonlinear division on the first encryption grade to obtain a second encryption grade and a third encryption grade; if the encryption level is less than or equal to a second encryption level, processing by adopting a first encryption mode; if the encryption level is greater than the second encryption level and less than or equal to a third encryption level, processing by adopting a second encryption mode; and if the encryption level is higher than the third encryption level, processing by adopting a third encryption mode.
Further, the performing nonlinear division on the encryption level to obtain a second encryption level and a third encryption level specifically includes: obtaining the first encryption level FTrd based on a formula
Calculating the second encryption level STrd; based on the formula
The third encryption level TTrd is calculated.
Further, the first encryption mode comprises a first key step, a second encryption mode and a third encryption mode; the second processing policy includes a second critical step and a third encryption mode.
Further, the step S2 is specifically: and carrying out data combination on the encrypted original data, and storing the combined data in an encryption cache.
Further, the data combination of the encrypted original data specifically includes: determining the security level of the encrypted original data, grouping the original data based on the security level, merging and splitting the groups based on the size of the groups, sequencing the split groups, and combining all the groups according to the sequencing order to form combined data.
Further, the determining the security level of the encrypted original data specifically includes: obtaining a security level IMU (inertial measurement Unit) of a user corresponding to the original data, obtaining an encryption level DFL (distributed feedback) of the original data and a time PTS (time stamp) of the original data after encryption, and calculating a security level IMD (in-mold decoration) of the original data based on the following formula;
IMD＝IMU×DFL/PTS (4)。
further, the merging and splitting of the packets based on the size of the packets specifically includes: acquiring the size of each packet one by one, splitting the packet to form a plurality of packets with the size of the first size threshold and a single packet if the size of the packet is larger than the first size threshold, and setting the security level of the split packet to be equal to the security level of the packet before splitting; if the size of the packet is less than the second size threshold, the packet and other packets are merged to form a packet having a size less than the first size threshold.
The beneficial effects of the invention include: the hierarchical selection of the encryption mode can be carried out, so that the encryption efficiency is improved to the maximum extent; the data after encryption processing is combined based on the encryption grade, and then the encrypted data is processed subsequently, so that the system efficiency is greatly improved.
[ description of the drawings ]
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this application, and are not to be considered limiting of the invention, in which:
fig. 1 is a flow chart of a data encryption combining method of the present invention.
[ detailed description ] embodiments
The present invention will now be described in detail with reference to the drawings and specific embodiments, wherein the exemplary embodiments and descriptions are provided only for the purpose of illustrating the present invention and are not to be construed as limiting the present invention.
A data encryption combination method applied in the present invention is explained in detail, the method includes the following steps:
s1: carrying out encryption grade evaluation on the original data, specifically comprising the following steps: acquiring attribute information of the original data, and determining an encryption level based on the attribute of the original data;
for example: if the attribute of the original data is the highest secret, correspondingly setting the encryption level as the highest level;
s2: performing hierarchical encryption on the original data based on the encryption level; specifically, the method comprises the following steps: if the encryption level is greater than or equal to a first encryption level, the original data is not processed, and the original data is directly returned; otherwise, if the encryption level is less than the first encryption level, performing hierarchical encryption on the original data based on the encryption level;
the hierarchical encryption is performed on the original data based on the encryption level, which specifically comprises the following steps: carrying out nonlinear division on the first encryption grade to obtain a second encryption grade and a third encryption grade; if the encryption level is less than or equal to a second encryption level, processing by adopting a first encryption mode; if the encryption level is greater than the second encryption level and less than or equal to a third encryption level, processing by adopting a second encryption mode; if the encryption level is higher than a third encryption level, processing by adopting a third encryption mode;
the non-linear division of the encryption grade to obtain a second encryption grade and a third encryption grade specifically comprises: obtaining the first encryption level FTrd based on a formula
Calculating the second encryption level STrd; based on the formula
Calculating the third encryption level TTrd; by adopting the method, the simple encryption mode is adopted for the original data in the larger encryption grade interval, and the complex encryption mode is adopted for the high-grade original data in the smaller encryption grade interval;
preferably: the first, second and third encryption modes are stored in a local cache; the encryption mode is stored in an encryption mode; the encryption mode is dynamically modified based on the current security requirement, so that the modifiability and the real-time property of security processing are improved;
preferably: the first encryption mode comprises a first key step, a second encryption mode and a third encryption mode; the second processing strategy comprises a second key step and a third encryption mode;
preferably: the third encryption mode comprises clearing obviously contradictory data in the original data;
preferably: the first critical step is more complex than the second critical step;
s3: carrying out data combination storage on the encrypted original data; specifically, the method comprises the following steps: carrying out data combination on the encrypted original data, and storing the combined data in an encryption cache;
the data combination of the encrypted original data specifically includes: determining the security level of encrypted original data, grouping the original data based on the security level, merging and splitting the groups based on the size of the groups, sequencing the split groups, and combining all the groups according to a sequencing sequence to form combined data;
the determining the security level of the encrypted original data specifically includes: obtaining a security level IMU (inertial measurement Unit) of a user corresponding to the original data, obtaining an encryption level DFL (distributed feedback) of the original data and a time PTS (time stamp) of the original data after encryption, and calculating a security level IMD (in-mold decoration) of the original data based on the following formula;
IMD＝IMU×DFL/PTS (4)；
grouping original data based on the security level, grouping the original data according to a security level gradient, and setting a label for the grouping, wherein the content of the label is the security level; preferably: the security level gradient is to divide the security level into a plurality of gradients according to a fixed security level interval and divide the original data into corresponding groups according to the security level;
the merging and splitting of the packets based on the packet sizes specifically includes: acquiring the size of each packet one by one, splitting the packet to form a plurality of packets with the size of the first size threshold and a single packet if the size of the packet is larger than the first size threshold, and setting the security level of the split packet to be equal to the security level of the packet before splitting; if the size of the packet is less than a second size threshold, merging the packet with other packets to form a packet having a size less than a first size threshold;
the grouping and other groupings are merged, specifically, only when the difference value of the security levels between two groupings is smaller than the threshold value of the difference value of the security levels, the two groupings are merged; resetting the security level for the merged packet; the reset privacy level is equal to the greater of the privacy levels of the two packets;
the sorting of the split packets specifically includes: sorting the packets in descending order of the privacy level;
the data are sorted according to the security level and divided into the groups meeting the size of the subsequent processing requirement, so that the subsequent processing is facilitated; the original data can be selectively protected from the beginning according to encryption and data protection conditions;
the storing of the original data of the combined data in the encryption cache specifically includes: calculating the security level of the combined data, selecting an encryption cache partition matched with the security level, and storing the combined data in the selected encryption cache partition;
the calculating the security level of the combined data specifically comprises: setting the security level equal to the sum of all grouped security levels in the combined data and dividing the sum by the number of the groups;
preferably: the encryption cache is a local cache;
the above description is only a preferred embodiment of the present invention, and all equivalent changes or modifications of the structure, characteristics and principles described in the present invention are included in the scope of the present invention.
Claims (9)
1. A data encryption combination method, characterized in that the method comprises the steps of:
s1: performing hierarchical encryption on the original data based on the encryption level;
s2: and carrying out data combination storage on the encrypted original data.
2. The data encryption combination method according to claim 1, wherein the step S1 specifically includes: and if the encryption level is less than the first encryption level, performing hierarchical encryption on the original data based on the encryption level.
3. The data encryption combination method according to claim 2, wherein the hierarchical encryption is performed on the original data based on the encryption level, specifically: carrying out nonlinear division on the first encryption grade to obtain a second encryption grade and a third encryption grade; if the encryption level is less than or equal to a second encryption level, processing by adopting a first encryption mode; if the encryption level is greater than the second encryption level and less than or equal to a third encryption level, processing by adopting a second encryption mode; and if the encryption level is higher than the third encryption level, processing by adopting a third encryption mode.
4. The data encryption combination method according to claim 3, wherein the non-linear division of the encryption levels to obtain a second encryption level and a third encryption level is specifically: obtaining the first encryption level FTrd based on a formula
Calculating the second encryption level STrd; based on the formula
The third encryption level TTrd is calculated.
5. The data encryption combination method according to claim 4, wherein the first encryption mode comprises a first key step and second and third encryption modes; the second processing policy includes a second critical step and a third encryption mode.
6. The data encryption combination method according to claim 5, wherein the step S2 specifically includes: and carrying out data combination on the encrypted original data, and storing the combined data in an encryption cache.
7. The data encryption combination method according to claim 6, wherein the data combination of the encrypted original data is specifically: determining the security level of the encrypted original data, grouping the original data based on the security level, merging and splitting the groups based on the size of the groups, sequencing the split groups, and combining all the groups according to the sequencing order to form combined data.
8. The data encryption combination method according to claim 7, wherein the determining the security level of the encrypted original data is specifically: obtaining a security level IMU (inertial measurement Unit) of a user corresponding to the original data, obtaining an encryption level DFL (distributed feedback) of the original data and a time PTS (time stamp) of the original data after encryption, and calculating a security level IMD (in-mold decoration) of the original data based on the following formula;
IMD＝IMU×DFL/PTS (4)。
9. the data encryption combination method according to claim 8, wherein the merging and splitting of the packets is performed based on the size of the packets, specifically: acquiring the size of each packet one by one, splitting the packet to form a plurality of packets with the size of the first size threshold and a single packet if the size of the packet is larger than the first size threshold, and setting the security level of the split packet to be equal to the security level of the packet before splitting; if the size of the packet is less than the second size threshold, the packet and other packets are merged to form a packet having a size less than the first size threshold.
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| CN116484407A (en) * | 2023-04-23 | 2023-07-25 | 深圳市天下房仓科技有限公司 | Data security protection method and device, electronic equipment and storage medium |
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