CN117521156A - Guarantee factory equipment maintaining records Security method - Google Patents
Guarantee factory equipment maintaining records Security method Download PDFInfo
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- CN117521156A CN117521156A CN202311573366.3A CN202311573366A CN117521156A CN 117521156 A CN117521156 A CN 117521156A CN 202311573366 A CN202311573366 A CN 202311573366A CN 117521156 A CN117521156 A CN 117521156A
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- 238000000034 method Methods 0.000 title claims abstract description 32
- 238000012423 maintenance Methods 0.000 claims abstract description 186
- 238000003860 storage Methods 0.000 claims abstract description 15
- 238000007689 inspection Methods 0.000 claims description 38
- 238000004364 calculation method Methods 0.000 claims description 3
- 238000005516 engineering process Methods 0.000 abstract description 4
- 238000004519 manufacturing process Methods 0.000 abstract description 2
- 239000004065 semiconductor Substances 0.000 abstract 1
- 238000004140 cleaning Methods 0.000 description 9
- 238000001514 detection method Methods 0.000 description 4
- 230000002159 abnormal effect Effects 0.000 description 3
- 238000012546 transfer Methods 0.000 description 2
- 230000004075 alteration Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000002354 daily effect Effects 0.000 description 1
- 238000013524 data verification Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000003203 everyday effect Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000000737 periodic effect Effects 0.000 description 1
- 230000003449 preventive effect Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
- 238000012795 verification Methods 0.000 description 1
Classifications
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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
- G06F21/64—Protecting data integrity, e.g. using checksums, certificates or signatures
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F16/00—Information retrieval; Database structures therefor; File system structures therefor
- G06F16/20—Information retrieval; Database structures therefor; File system structures therefor of structured data, e.g. relational data
- G06F16/22—Indexing; Data structures therefor; Storage structures
- G06F16/2228—Indexing structures
- G06F16/2255—Hash tables
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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
- G06F21/62—Protecting access to data via a platform, e.g. using keys or access control rules
- G06F21/6218—Protecting access to data via a platform, e.g. using keys or access control rules to a system of files or objects, e.g. local or distributed file system or database
- G06F21/6227—Protecting access to data via a platform, e.g. using keys or access control rules to a system of files or objects, e.g. local or distributed file system or database where protection concerns the structure of data, e.g. records, types, queries
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P90/00—Enabling technologies with a potential contribution to greenhouse gas [GHG] emissions mitigation
- Y02P90/30—Computing systems specially adapted for manufacturing
Abstract
The present invention relates to the field of data secure storage technology, which discloses a method for guaranteeing the security of maintenance records of factory equipment, the record is not easy to tamper, and the reliability, reliability and traceability of record storage are improved. The book is provided with invention of the invention scheme for the production of a semiconductor device comprising the following steps: recording maintenance records of the equipment according to the time sequence; generating a hash value of the current maintenance record according to the set period: the hash value of the current maintenance record is obtained by carrying out hash operation on the current maintenance record, the current timestamp and the hash value corresponding to the last maintenance record, and a data index catalog is generated; the hash value and the data index directory of the current maintenance record are stored. The invention is suitable for factory equipment.
Description
Technical Field
The invention relates to a data security storage technology, in particular to a method for guaranteeing the security of maintenance records of factory equipment.
Background
At present, a common method for guaranteeing spot inspection, maintenance and repair records of factory equipment is a symmetrical encryption technology, such as: the digest hash value such as md5 is either generated using the aes algorithm or simply. The symmetric encryption and decryption technology is to encrypt the record and decrypt the inquiry original text when the inquiry is needed; the MD5 algorithm is adopted to save the hash value of the record by using the MD5 algorithm, and when inquiring whether the record is tampered, the record is subjected to MD5 operation again to obtain the hash value, and whether the original stored hash value is consistent is compared.
The above-mentioned manner has the disadvantage of being easily intercepted and tampered with by high-rights or counterfeited high-rights people, such as: for the scheme adopting the aes algorithm, if the secret key is obtained, the recorded ciphertext can be decrypted and tampered, and then the original ciphertext is replaced for storage. For the scheme adopting the MD5 algorithm, after the recorded text is tampered, a new hash value is generated by using the MD5 algorithm to replace the original hash value.
Recording factory equipment spot check, maintenance and repair records is required to faithfully reflect the state of the real life cycle of equipment, especially important equipment with high value, or users who often rent and purchase second-hand high-value equipment, and the faithful recording spot check, maintenance and repair records are important to the economic value of new owners or users.
Therefore, a method for guaranteeing the reliability, traceability and difficult tampering of the record is needed.
Disclosure of Invention
The technical problems to be solved by the invention are as follows: the method for guaranteeing the security of the maintenance records of the factory equipment is provided, the records are not easy to tamper, and the reliability, reliability and traceability of record storage are improved.
The technical scheme adopted for solving the technical problems is as follows:
a method of securing maintenance records of a plant facility, comprising:
recording maintenance records of the equipment according to the time sequence;
generating a hash value of the current maintenance record according to the set period:
the hash value of the current maintenance record is obtained by carrying out hash operation on the current maintenance record, the current timestamp and the hash value corresponding to the last maintenance record, and a data index catalog is generated;
the hash value and the data index directory of the current maintenance record are stored.
Further, the maintenance record includes: spot inspection, maintenance and maintenance record; the recorded content includes structured text data and unstructured audiovisual data.
Further, the recording the maintenance record of the device according to the time sequence includes:
for the structured text data, directly inputting an original maintenance record database local to the equipment user;
and for unstructured audio and video data, taking a hash value of the audio and video data to record an original maintenance record database local to a device user.
Further, the generating the hash value of the current maintenance record according to the set period includes:
if the maintenance type is spot check, the user selects a period of month, week or day, and a hash value of the current maintenance record is generated;
if the maintenance type is maintenance or repair, defaulting to be performed once, and generating a hash value of the current maintenance record.
Further, the performing a hash operation on the hash value corresponding to the current maintenance record, the current timestamp and the last maintenance record includes:
if the equipment is put into use for the first time and the hash value corresponding to the last maintenance record does not exist, directly carrying out hash operation on the current maintenance record and the current timestamp;
if the equipment is not put into use for the first time and the hash value corresponding to the last maintenance record exists, performing hash operation on the current maintenance record, the current timestamp and the hash value corresponding to the last maintenance record.
Further, the data index directory includes: the method comprises the steps of starting and ending time ranges of hash value operation of a current maintenance record, a storage path of original data, a time stamp, a hash value corresponding to a last maintenance record and a data ordering sequence of the hash value operation of the current maintenance record.
Further, the storing the hash value and the data index directory of the current maintenance record includes:
the hash value and the data index catalog of the current maintenance record are stored in a maintenance record index database local to the device user.
Further, the method further comprises:
reporting the hash value and the data index catalog of the current maintenance record to a third party service;
when the factory equipment has a new user, the new user acquires the hash value and the data index catalog of the saved historical maintenance record from the third party service;
and checking the hash value of the maintenance record in the past, and judging whether the maintenance record data is tampered or not.
Further, the verification of the obtained hash value of the past maintenance record by the new user of the factory equipment, and judging whether the maintenance record data is tampered, includes:
according to the data index catalog, maintenance record data under a corresponding path is obtained from an original equipment user, and hash calculation is carried out by combining a hash value corresponding to the last maintenance record in the data index catalog, the starting and ending time range of the hash value operation, timestamp information and a data ordering sequence, so that a restored hash value is obtained;
and comparing the restored hash value with the hash value of the maintenance record of the corresponding time range acquired from the third party service, and if the restored hash value is consistent with the hash value of the maintenance record, judging that the maintenance record data is not tampered.
The beneficial effects of the invention are as follows:
in the scheme of the invention, the hash digest (hash value) is iterated successively on the maintenance record according to the time sequence, namely the hash digest information of the last maintenance record is covered in the hash digest of the current maintenance record, so that a trusted chain sequenced according to the time sequence is formed, and therefore, the method has the characteristics of increment record only and difficult counterfeiting, and the maintenance record is ensured to be difficult to tamper.
In addition, the recorded hash abstract and the data index catalog can be synchronously recorded by a third party or more users, so that when the equipment resells or replaces users, the historical maintenance record of the equipment can be queried through the data index catalog provided by the third party or more parties, the hash operation is carried out again through the queried maintenance record, and the comparison is carried out with the hash abstract provided by the third party or more parties to verify whether the maintenance record is the original data, thereby improving the reliability, the reliability and the traceability of record storage.
Drawings
FIG. 1 is a flow chart of a method for securing maintenance records of plant equipment in the present invention;
FIG. 2 is a network layout diagram of a plant rental system, in an embodiment.
Detailed Description
The invention provides a method for guaranteeing the security of maintenance records of factory equipment, which aims to guarantee that the records are not easy to tamper, and improve the reliability, reliability and traceability of record storage. The core is as follows: the hash digests are carried out on the equipment point inspection, maintenance and repair records according to the time sequence, and each hash digest is generated on the basis of the last latest point inspection, maintenance or repair record hash digest and the current record digest and is subjected to time stamping, so that a trusted chain sequenced according to time sequences is formed, and the method has the characteristics of being capable of only incremental recording and being difficult to forge, and therefore the maintenance records are guaranteed to be difficult to tamper. In addition, the recorded hash abstract and the data index catalog can be synchronously recorded by a third party or more users, so that when the equipment resells or replaces users, the historical maintenance record of the equipment can be queried through the data index catalog provided by the third party or more parties, the hash operation is carried out again through the queried maintenance record, and the comparison is carried out with the hash abstract provided by the third party or more parties to verify whether the maintenance record is the original data, thereby improving the reliability, the reliability and the traceability of record storage.
In specific implementation, referring to fig. 1, a flow of a method for guaranteeing security of maintenance records of factory equipment in the present invention includes:
s1, recording equipment spot inspection, maintenance and repair records according to time sequence;
spot inspection, namely, whether abnormal preventive and frequent inspection is carried out on key points on equipment by manual experience or by means of a tool instrument, and daily spot inspection can be set for some important production equipment in order to discover hidden dangers and defects of the equipment as early as possible in time; repairing, namely repairing equipment based on abnormal conditions found after spot inspection; maintenance is maintenance work that is regularly performed on equipment in order to maintain equipment life and performance status.
For equipment point inspection, maintenance and repair records, the equipment point inspection, maintenance and repair records are usually recorded into a database of equipment, such as an original maintenance record database, in time after corresponding work is completed.
S2, acquiring a hash value of the spot inspection, maintenance and repair audio and video, and recording and storing the hash value and a corresponding file;
in general, the recorded data includes both structured data and unstructured data, and when recording, the structured data includes text data such as spot inspection, maintenance, repair, etc., such as maintenance duration, consumable, equipment status, abnormal status, maintenance repair responsible person information, etc., and the data is stored in a database in time sequence.
And (3) for unstructured data, such as operation audio and video records of spot inspection, equipment maintenance and repair, after video shooting is completed, checking, confirming and storing, and taking the hash value of the audio and video for storing.
S3, according to the period of spot inspection, maintenance and repair, calculating the record and the time stamp to obtain a hash value H1 and generating a data index catalog;
when the equipment user uses the equipment for the first time, the equipment is routinely checked every day, a check record is recorded, and the hash operation can be carried out on the check record in a time period of month, week or day according to actual requirements. For comprehensive consideration of safety and computing resources, periodic hash operation can be performed according to a cycle of time, namely, electronic records of equipment point detection are arranged in time sequence every week by a user of equipment, and the arranged records are added with a current timestamp to generate a hash value H1.
In addition, a data index directory is also generated, which is mainly used for recording information such as a data path used for generating the hash value, a data point detection record value starting and ending time range of the hash value H1, a time stamp, a data sequence of the hash value operation and the like, so that the original data can be found according to the index directory to generate the hash value during data verification.
It should be noted that, if a maintenance or repair event occurs in one period of generating the hash value in the spot check record, the period of taking the hash value may be divided into two times: one time from the beginning of the week to the completion of maintenance or repair, and the other time from the beginning of the point inspection after maintenance or repair to the end of the week. That is, the hash value is generated twice every week.
S4, reporting the hash value H1 and the data index catalog to a third party service, and pushing the third party service message to other units using the device;
the reporting of the hash value H1 and the data index directory in the step is mainly used for synchronously storing the information to a third party service, and when the equipment is resale or leased, the historical spot check, maintenance and repair record hash value and the data index directory of the equipment can be obtained by the third party service as an equipment receiver so as to check the corresponding record and judge whether the corresponding record is tampered. Such as:
the device receiver can acquire maintenance record data under a corresponding path from the original device user through the data index catalog, and performs hash calculation by combining a hash value corresponding to the last maintenance record in the data index catalog, the starting and ending time range of the hash value operation, timestamp information and a data ordering sequence to acquire a restored hash value; and comparing the restored hash value with the hash value of the maintenance record of the corresponding time range acquired from the third party service, and if the restored hash value is consistent with the hash value of the maintenance record, judging that the maintenance record data is not tampered.
S5, continuously inputting new equipment point inspection, maintenance and repair records according to time sequences;
for the second week, third week, nth week, etc. of the equipment use, the equipment spot check, maintenance, repair records are entered into the original maintenance record database in the same manner as step S1.
S6, acquiring a hash value of the spot inspection, maintenance and repair audio and video, and recording and storing the hash value and a corresponding file;
for the second week, third week, nth week, etc. of device use, the hash value of the unstructured audio-video record is also obtained for storage in the same manner as step S2.
S7, according to the period of spot inspection, maintenance and repair, calculating the record, the time stamp and the last hash value Hn-1 to obtain the hash value Hn and generating a data index catalog;
for the second week, third week, nth week, etc. of the device use, since the hash value record of the previous cycle has been already recorded before, in the new hash value generation process, the hash value of the previous cycle is also introduced to participate in the operation. The method comprises the steps of carrying out hash operation on three parts of a hash value and a current timestamp of a previous period on a record of spot inspection, maintenance and repair of the current period, so as to obtain the hash value of the current period, and generating a corresponding data index catalog.
S8, reporting the hash value Hn and the data index catalog to a third party service, and pushing the third party service message to other units using the device;
and as in the step S4, reporting the hash value Hn and the data index directory to a third party service.
Before the transfer of the use right (such as selling and renting) of the equipment, the point inspection, maintenance and repair record storage of the equipment are all executed according to the steps, and after the transfer of the use right, the new equipment user can acquire the hash value and the data index catalog of the point inspection, maintenance and repair record according to the period from the third party service.
The new equipment user obtains the original point inspection, maintenance and repair records from the original user through the hash value and the data index catalog, verifies the legality of the hash value, and queries the original equipment point inspection, maintenance and repair records according to the actual service requirement after verifying the legality of the hash value. When a new user performs equipment point inspection, maintenance and repair, a new hash value and a data index catalog are generated based on the last point inspection, maintenance and repair hash value and the time stamp of the original user. Simultaneously the new hash value and the data index directory are synchronized to the third party service. And the new user stores the original electronic text record and the audio-video record in the process of checking, maintaining and repairing the equipment during the use of the equipment by the new user.
Examples:
take as an example the implementation of the inventive solution in a factory equipment rental system. Referring to fig. 2, in the rental system, a large-scale cleaning device is rented for use by five factories in turn, each factory does not need to pay the expense of purchasing the device, only needs to bear the point inspection, maintenance and repair costs during renting and use, and can strictly check whether a user points inspection, maintenance and repair before according to the requirement, and record that the user is not falsified. A device spot inspection, maintenance and repair record database (hereinafter referred to as an original maintenance record database) is deployed in all five factories and is used for storing spot inspection, maintenance and repair original records; a hash value and data index directory database (hereinafter referred to as maintenance record index database) is also deployed in the five factories, for storing the hash value and data index directory calculated for the maintenance record.
The operation steps of this embodiment are as follows:
1. the factory using the equipment for the first time, the equipment is subjected to spot inspection, maintenance and repair according to the requirements in the use process, and records are made according to time sequence, including text records and audio-video records. The audio and video record takes a hash value and is stored to an original maintenance record database together with the corresponding text record.
According to the cycle of spot inspection, maintenance and repair, the corresponding records and the time stamp are operated to obtain a hash value, a corresponding data index catalog is generated, the hash value is stored in a maintenance record index database, and meanwhile, the hash value is reported to a third party service. The third party service in this embodiment is the device user, i.e., the factory currently leased. The third party service synchronously transmits the hash value and the data index directory to other factories for saving the cleaning equipment in a manner of message service.
Example data are as follows in table 1:
table 1: the cleaning equipment first checks and maintains part of original data:
the contents of table 1 are stored in the original maintenance record database, and since the equipment maintenance is performed at 2023-05-17, in order to store and synchronize the hash data in time, the hash operation is performed according to the record and the timestamp in table 1, so as to generate a hash value and an index directory, and obtain the contents of table 2 as follows:
table 2: first generated hash value and index directory
The contents in table 2 above are stored in a maintenance record index database and simultaneously reported to a third party service for pushing to another several factories ready to rent the cleaning equipment.
2. The user continues to store the original point detection, maintenance and repair records in time sequence, and iterates to generate a record hash value and a data index catalog. The Hash value and the data index catalog are reported to a third party service, and the third party service sends the Hash value and the data index catalog to other factories to be rented for saving in a message service mode.
Examples of data are shown in table 3 below:
table 3: spot inspection and maintenance of part of original data of cleaning equipment:
similarly, the content of the above table 3 is stored in the original maintenance record database, and since 2023-06-21 performs equipment maintenance, in order to store and synchronize the hash data in time, the hash operation is performed according to the record in the above table 3, the last hash value and the timestamp, so as to generate a hash value and an index directory, and obtain the content of the following table 4:
table 4: hash value and index directory
Also, the contents of table 4 above are stored in the maintenance record index database while being reported to the third party service, and pushed to another several factories ready to rent the cleaning equipment for storage.
3. When the factory of the current user temporarily does not use the cleaning machine equipment, the equipment is handed over to the factory of the next lease to use the equipment. Assuming that the equipment factory for the next rental use is XX manufacturer, use equipment side ID: sy0002 then the third party service of the current party pushes the data in the following table 5 in turn to this next party:
table 5: data pushed to new device users
The new user can call and inquire the original point inspection, maintenance and repair records of the original user according to the hash value and the data index catalog which are synchronously sent by the original user, and generate hash values of different point inspection, maintenance and repair periods according to the needs. After confirming that the equipment is not tampered, the new user can check whether the original point detection, maintenance and repair record of the equipment meets the requirements.
4. When a new user performs point inspection, maintenance and repair equipment, original point inspection, maintenance and repair records are stored in time sequence, a first generated hash value is based on a hash value finally pushed by a third party service of the original user, a subsequent hash value is based on a hash value generated in the factory last time, and further a record hash value and a data index catalog are iteratively generated.
Examples of data are shown in table 6 below:
table 6: the cleaning equipment checks and maintains the original data at the point of a new user:
the data in table 6 is stored in the original maintenance record database of the new user, and since 2023-07-09 performs equipment maintenance, in order to store and synchronize the hash data in time, the hash operation is performed according to the record in table 6, the last hash value (the hash value that was last pushed by the original user third party service) and the timestamp, so as to generate a hash value and an index directory, and obtain the contents of table 7 below:
table 7: new user side generates hash value and data index catalog for the first time
Also, the contents of table 7 above are stored in the maintenance record index database while being reported to the third party service, and pushed to another several factories ready to rent the cleaning equipment for storage.
5. When a new user temporarily does not use the cleaner equipment and hands over the factory where the equipment is leased next, the next factory checks the previous record according to the mode of the step 3, iteratively generates the hash and the data index catalog of the record according to the mode of the step 4, and simultaneously reports the data index catalog to a third party service while maintaining a record index database locally.
An exemplary data is shown in table 8:
table 8: constantly iterated hash value and data index directory
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Through the means, the embodiment forms a trusted chain sequenced according to time sequence, so that the maintenance records are difficult to tamper, the historical maintenance records of the equipment can be queried through the data index catalog provided by the third party service, the queried maintenance records are subjected to hash operation again, and the comparison is carried out with the hash abstract provided by the third party service to verify whether the maintenance records are original data, so that the reliability, the reliability and the traceability of record storage are improved.
Finally, while embodiments of the present invention have been described above, it will be appreciated by those skilled in the art that numerous changes, modifications, substitutions and alterations can be made hereto without departing from the spirit and scope of the invention as defined by the appended claims.
Claims (9)
1. A method of securing maintenance records for a plant facility, comprising:
recording maintenance records of the equipment according to the time sequence;
generating a hash value of the current maintenance record according to the set period:
the hash value of the current maintenance record is obtained by carrying out hash operation on the current maintenance record, the current timestamp and the hash value corresponding to the last maintenance record, and a data index catalog is generated;
the hash value and the data index directory of the current maintenance record are stored.
2. A method of securing a maintenance record for a plant device according to claim 1,
the maintenance record includes: spot inspection, maintenance and maintenance record; the recorded content includes structured text data and unstructured audiovisual data.
3. A method of securing a maintenance record for a plant device according to claim 2,
the recording of the maintenance records of the equipment according to the time sequence comprises the following steps:
for the structured text data, directly inputting an original maintenance record database local to the equipment user;
and for unstructured audio and video data, taking a hash value of the audio and video data to record an original maintenance record database local to a device user.
4. A method of securing a maintenance record for a plant device according to claim 1,
generating the hash value of the current maintenance record according to the set period comprises the following steps:
if the maintenance type is spot check, the user selects a period of month, week or day, and a hash value of the current maintenance record is generated;
if the maintenance type is maintenance or repair, defaulting to be performed once, and generating a hash value of the current maintenance record.
5. A method of securing a maintenance record for a plant device according to claim 1,
the hash operation is performed on the hash values corresponding to the current maintenance record, the current timestamp and the last maintenance record, and the method comprises the following steps:
if the equipment is put into use for the first time and the hash value corresponding to the last maintenance record does not exist, directly carrying out hash operation on the current maintenance record and the current timestamp;
if the equipment is not put into use for the first time and the hash value corresponding to the last maintenance record exists, performing hash operation on the current maintenance record, the current timestamp and the hash value corresponding to the last maintenance record.
6. A method of securing a maintenance record for a plant device according to claim 1,
the data index directory includes: the method comprises the steps of starting and ending time ranges of hash value operation of a current maintenance record, a storage path of original data, a time stamp, a hash value corresponding to a last maintenance record and a data ordering sequence of the hash value operation of the current maintenance record.
7. A method of securing a maintenance record for a plant device according to claim 1,
the storing the hash value and the data index directory of the current maintenance record comprises the following steps:
the hash value and the data index catalog of the current maintenance record are stored in a maintenance record index database local to the device user.
8. A method for securing a maintenance record for a plant as defined in any one of claims 1 to 7,
the method further comprises the steps of:
reporting the hash value and the data index catalog of the current maintenance record to a third party service;
when the factory equipment has a new user, the new user acquires the hash value and the data index catalog of the saved historical maintenance record from the third party service;
and checking the hash value of the maintenance record in the past, and judging whether the maintenance record data is tampered or not.
9. A method of securing a maintenance record for a plant device according to claim 8,
the new user of the factory equipment checks the obtained hash value of the past maintenance record and judges whether the maintenance record data is tampered or not, and the method comprises the following steps:
according to the data index catalog, maintenance record data under a corresponding path is obtained from an original equipment user, and hash calculation is carried out by combining a hash value corresponding to the last maintenance record in the data index catalog, the starting and ending time range of the hash value operation, timestamp information and a data ordering sequence, so that a restored hash value is obtained;
and comparing the restored hash value with the hash value of the maintenance record of the corresponding time range acquired from the third party service, and if the restored hash value is consistent with the hash value of the maintenance record, judging that the maintenance record data is not tampered.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202311573366.3A CN117521156A (en) | 2023-11-23 | 2023-11-23 | Guarantee factory equipment maintaining records Security method |
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| CN202311573366.3A CN117521156A (en) | 2023-11-23 | 2023-11-23 | Guarantee factory equipment maintaining records Security method |
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