JP2001164547A - Management method and device for civil engineering work - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a management method and device for civil engineering works capable of preventing construction data in a civil engineering work such as a grouting work or management data from being falsified and promoting a paperless trend of management data and technical data. SOLUTION: The management method and device include constructor's processing (AS 10) carried out by a constructor, contructor's processing (G 30) carried out by a contractor, owner's processing (Oh 50) carried out by an owner. Data are prevented from being falsified by using open keys (Sa,Oa, Ga) and confidential keys (Sb, Ob, Gb). Further, pretense of the malicious third party can be prevented.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to a method and an apparatus for managing a civil engineering work. In more detail, various ground improvement management such as grouting work, shield excavation management, measurement management such as landslides and landslides, management of survey data, workmanship management using digital cameras, tension data management of anchors, daily reports of various civil engineering works It relates to technologies used in civil engineering and architectural civil engineering work such as management of types. More specifically, it discovers falsification of civil engineering work record data recorded during such various types of civil engineering work, and a situation in which a malicious third party impersonates the contractor and transmits counterfeit data to the orderer. The present invention relates to a civil engineering work management method and apparatus capable of preventing tampering of work data that can be performed.

[0002]

2. Description of the Related Art Management of civil engineering work, for example, grouting management in grouting work, excavation management in shield work,
For construction management data in various construction methods such as measurement management of landslides and landslides, management of civil engineering daily reports, etc., the actual contents to be managed rely on a paper base such as a chart. For example, in the case of a grouting work, the flow rate and supply pressure of the milk to be injected into each boring hole are charted with a pen writing recorder (FIG. 12) and the work daily report (FIGS. Was output on paper as basic data, and the data output on paper was used as basic data for volume billing.

[0003] The problem here is that the contractor can forge or falsify the chart paper by handwriting or the like, and if such fraud occurs, it becomes socially significant. It can be a problem as an incident. As means for preventing such injustice, the orderer has been provided with a seal stamped on a chart sheet. In addition, since the management is based on paper, if the number of constructions is large, omission of approval or loss of documents may cause the next construction delay. That is, according to the conventional paper-based method, it is difficult to search, and furthermore, it is troublesome to store the materials.

Here, when transmitting information using various networks such as the Internet, in order to keep information confidential and prevent tampering, plaintext is encrypted with a public key, and the encrypted text is encrypted. A method that can be transmitted and decrypted by a recipient only with a secret key has been put to practical use. FIG. 15 shows a typical method, showing a transmission from the sender S to the receiver R and a falsification check. In the method shown in FIG. 15, the plaintext Ss1 transmitted by the sender S is divided into two directions, one of which is transmitted as the ciphertext Ss0 with the recipient S's public key and the recipient R is transmitted with the secret key. Decrypt and read plaintext Ss2. Next, the plaintext Ss2 is hashed to create a digest sentence Hs. The other plaintext Ss1 is hashed into a digest, which is digitally signed to obtain information Sd1. Next, the information Sd1 is encrypted with the secret key of the sender S, and is transmitted to the receiver R as ciphertext Sd0. The receiver R decrypts the ciphertext Sd0 with the sender's S public key, checks the digest and the electronic signature, compares the digest with the digest Hs, and checks for tampering. Such means are well known in current Internet communications.

[0005]

SUMMARY OF THE INVENTION The present invention has been proposed in view of the above-mentioned problems of the prior art and the current state of the Internet and other various electronic communication technologies. It is an object of the present invention to provide a civil engineering work management method and apparatus which prevent falsification of information, approve the act of approval, and make the management information and technical information paperless.

[0006]

According to the civil engineering management method of the present invention, a construction company collects civil engineering data as digital values, registers it in a construction management server, and hashes the civil engineering data to digest it. Civil work data management process of encrypting with the public key of the orderer and contractor and registering it with the work management server, acquiring civil work data from the work management server, and hashing the civil work data Into digest digest work data, create daily report data and register it in the construction management server, hash the daily report data into digest daily report data, attach an electronic signature together with the digest civil work data, and collectively Encrypted with the contractor's private key and registered as a digest data file in the construction management server Construction management process and the orderer, the digest data file from the construction management server,
Digest civil work data and daily report data are obtained, the digest data file and the digest civil work data are respectively decrypted, the daily report data is hashed to be digest daily report data, and the digest daily report data and the decrypted daily report data are obtained. In addition, the decrypted digest data file and the digest civil engineering work data are each compared to check for tampering, and if tampering is not recognized, the data is collectively added with an electronic signature and the orderer's private key is added. An orderer processing step of encrypting the data and registering it as a digest data file in the construction management server, and each of a contractor and an ordering contractor (an orderer, a contractor) obtains each data from the construction management server. The process of decrypting with the public key and approving and confirming the construction result And it has a door. Here, the term “constructor” means a subcontractor and the contractor when the contractor directly performs the contract.

[0007] In addition, in the case where the contractor receives an order for civil engineering work from the orderer via the orderer, in addition to the above, the orderer who received the order for civil engineering work from the orderer receives the digest data file, Digest civil engineering work data and daily report data are obtained, the digest data file and digest civil engineering work data are respectively decrypted, the daily report data is hashed to be digest daily report data, and the daily report data and the decrypted daily report data, and Then, the decrypted digest data file and the digest civil engineering work data are compared with each other to check for tampering, and if tampering is not found, the data is collectively added with an electronic signature and encrypted with the contractor's private key. And a contractor processing step for registering in the construction management server. Here, the term “contractor” means the contractor when there is a subcontractor, that is, the primary contractor.

The civil work data management step includes a first raw data collection step of collecting civil work data as digital values and registering the data in a construction management server;
Of the civil engineering work data collected in the raw data collection process of No. 0 as the 0th digest civil engineering work data
A hashing step, and a 0th keying step of encrypting the 0th digest civil engineering work data with the public key of the ordering party (the ordering party and the contractor) and registering the encrypted data in the construction management server. The management step includes a second raw data collection step of acquiring civil engineering data from the construction management server, a daily report creation step of creating daily report data from the civil engineering data, and registering the daily report data in the construction management server. A primary hashing step of hashing the civil engineering work data by the raw data collection step to obtain primary digest civil engineering work data;
A secondary hashing step of hashing the daily report data to produce digest daily report data, and combining the digest daily report data, the first digest civil engineering work data, and the electronic signature of the contractor as a first digest data file And a primary locking step of encrypting with a contractor's private key and registering the encrypted data with the construction management server.

[0009] The orderer processing step is a second daily report obtaining step of obtaining daily report data from the construction management server and confirming the contents thereof, and a fourth hashing step of hashing the daily report data to obtain digest daily report data. A third key release step of obtaining and decrypting the last (first or second order if a contractor is included later) digest data file from the construction management server; and A fourth key unlocking process for obtaining and decrypting the 0th digest civil engineering data, the digest civil engineering data decrypted in the third key unlocking process, and the digest civil engineering data decrypted in the fourth key unlocking process Civil engineering work data tampering check step for comparing and confirming the digest daily report data obtained in the fourth hashing step and the data decrypted in the third key release step. A second daily report data tampering check process for comparing and confirming the Jest daily report data, and an electronic signature of the orderer is added to the daily report data that has passed the second daily report data tampering check process, encrypted with the orderer's private key, and executed. And a third locking step for registration in the management server.

[0010] The contractor processing step is a first daily report acquisition step of acquiring daily report data from the construction management server and confirming the contents thereof, and a third hashing process for hashing the daily report data to obtain digest daily report data. A step, a primary key unlocking step of acquiring and decrypting a primary digest data file from the construction management server, and a secondary key unlocking acquiring and decrypting the zeroth digest civil engineering data from the construction management server. And comparing the digest civil engineering work data decrypted in the first key unlocking process with the digest civil engineering work data decrypted in the second key unlocking process.
A second civil work data tampering check step, a first daily report data tampering check step of comparing and confirming the digest daily report data in the third hashing step with the digest daily report data decrypted in the first key release step, A second keying step of adding a contractor's electronic signature to the daily report data that has passed the first daily report data tampering check step, encrypting the data with the contractor's secret key, and registering it in the construction management server.

In the civil engineering management method of the present invention, if the data writing software is not tampered with at the stage of collecting the civil engineering data, for example, as in the communication using the public key and the secret key described above, the data is not deleted. Confidentiality is maintained and tampering is prevented, and it is possible to prevent a situation in which a malicious third party impersonates a contractor or a contractor and sends forged data to the orderer. Further, by using digesting by a hash function together, falsification, spoofing, and the like can be more easily prevented. In addition to this, the management system employing the present invention is basically paperless, eliminating the need to issue and store paper documents. Checks and confirmation of civil works data can be performed in real time. That is, according to the civil engineering work management method of the present invention, it is possible to prevent various types of civil engineering work data obtained by civil engineering work from being tampered with in each process, or to prevent the civil engineering work data from being tampered with or forged from outside. At the same time, each of the construction side and the ordering side can electronically approve and / or confirm the construction result, and the data management in the civil engineering work is reliably performed.

In order to carry out the civil engineering management method of the present invention, the civil engineering management device of the present invention comprises a contractor processing device used by a contractor, a contractor processing device used by a contractor, and an orderer processing device. And a construction management server that centrally manages data related to each of the processing devices. The construction company processing device collects civil work data in digital form. (1) a raw data collection device, zero-order hashing means for hashing the civil engineering work data collected by the first raw data collection device into a digest, and an orderer and a digester for the digested civil engineering work data. A civil engineering work data management device comprising a zero-order locking means for encrypting with a contractor's public key, and a civil engineering work data digitized from the construction management server; , A primary hashing means for hashing the civil engineering work data into a digest, and daily report data from the civil engineering work data collected by the second raw data collecting apparatus. Daily report creation means to be created, secondary hashing means for hashing the daily report to make a digest, digest daily report data digested by the secondary hashing means and digested by the primary hashing means And a construction management apparatus comprising primary locking means for collectively encrypting the digest civil engineering work data and the contractor's electronic signature as a first digest data file with the contractor's private key. .

[0013] Also, the contractor processing device includes a first daily report acquisition device for acquiring a daily report from the construction management server;
Tertiary hashing means for hashing the daily report to make a digest, primary key release means for decrypting the primary digest data file encrypted by the primary keying means, A secondary key release means for decrypting the digest civil engineering work data encrypted by the keying means, and digest daily report data and digest civil work data of the primary digest data file decrypted by the primary key release means. And a secondary locking means for adding an electronic signature to the contractor name after confirming that there is no falsification, and encrypting the same with the contractor's private key as a secondary digest data file.

Further, the orderer processing device includes a second daily report acquiring device for acquiring a daily report from the construction management server, a fourth hashing means for hashing the daily report to obtain a digest, and Tertiary key release means for decrypting the secondary digest data file encrypted by the secondary lock means, and fourth key release for decrypting the digest civil engineering work data encrypted by the zeroth lock means. Means,
After confirming that the digest daily data and the digest civil engineering work data of the secondary digest data file decrypted by the tertiary key release means are not falsified, the orderer name is added to the digest daily report data of the secondary digest data file. Tertiary lock means for digitally signing and encrypting as a third digest data file with the private key of the orderer.

In the above construction data falsification prevention device,
It is assumed that digital data is acquired by the raw data acquisition device for civil engineering work, but if an A / D converter that inputs analog values and converts them into digital values is attached, various data collection for various civil engineering works will be easy. The scope of application expands. Also, the delivery of the public key can be done using a server,
It may be by a floppy or other storage medium, or by e-mail. According to the civil engineering data tampering prevention apparatus of the present invention having such a configuration, data confidentiality is maintained and tampering is prevented, and malicious It is possible to prevent a situation where the three parties impersonate the contractor or the contractor and send the forged data to the orderer. In addition to this, there is an advantage that paper documents are not required to be issued or stored, and that the amount of construction work can be easily confirmed by digitizing the construction approval action, the progress of civil engineering work can be checked, and the civil engineering work data can be confirmed in real time.

[0016]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Referring to the drawings, a grouting method for injecting grout into a boring hole will be described below as an example.
An embodiment of the present invention will be described. 1 to 4,
The civil engineering management device generally designated by reference numeral 1 includes a contractor processing device AS10 used by a contractor, a contractor processing device G30 used by a contractor, an orderer processing device Oh50 used by an orderer, and a construction management device. A construction management server DB for storing and managing data in a centralized manner.

As shown in FIG. 1, the construction company processing apparatus AS10 includes an injection management apparatus AS11 which is a civil engineering work data management apparatus for managing grouting work, and a GT construction management apparatus which is a construction management apparatus for managing construction state. AS21,
It is composed of The injection management device AS11 includes a first raw data collection device 13 that collects the civil engineering work data 13A of the injection flow rate, the injection pressure, and the time associated with the injection work as digital data, and the civil engineering work data 13A with the MD5, S
A zeroth-order hashing means 14 for generating digest civil engineering work data 14A digested by a known hash function known as HA-1 and the like, and publicly provided digest civil engineering work data 14A from the ordering party and the contractor And a zero-order locking means 15 for encrypting with the keys Oa and Gb.

The processing software used in the first raw data collection device 13 is made inoperable from the outside by sealing or encryption, and is configured so as to prevent unauthorized access at the data collection stage.

Referring to FIG. 4, the GT construction management device AS21 further includes a second raw data collection device 23 for quoting and obtaining the civil engineering work data 13A from the recording device DB1 of the construction management server DB. Digest civil engineering work data 24 in which the work data 13A is hashed to be digested
A, a primary hashing means 24 for generating A, a daily report creating means 25 for creating daily report data 25A from the civil engineering work data 13A, and a secondary hash for digesting the daily report 25 data A to digest daily report data 26a. And a primary locker 28 that encrypts the construction management information described below with the private key Sb of the constructor to create a primary digest data file 26d. The primary digest data file 26d, which is construction management information, includes digest daily report data 26a.
And the digest civil engineering work data 24A and the contractor's electronic signature 26c are formed in one file.

FIG. 2 and FIG.
As shown in (1), the primary daily report acquisition device G31 that acquires the daily report 25 data A from the data recording device DB4 of the construction management server DB, and the daily report data 25A obtained here are hashed to generate the digest daily report data 34A. The tertiary hashing means 34 and the first data
Quoting means 35 for quoting the next digest data file 26d, and the first digest data file 26
Primary key release means 39 for decrypting d with the contractor's public key Sa
And The citing means 35 includes the digest daily report data 26a and the digest civil engineering work data 24A.
And a digital digest 26c, and has a function of retrieving and citing the primary digest data file 26d formed by the electronic digest 26c.

Further, the first data obtained by the citing means 35
The data digested by decrypting the next digest data file 26d and confirmed as a contractor and signed are encrypted by the contractor's private key Gb of the secondary locking means 40 and formed as a secondary digest data file 42. It is configured as follows. The digest civil engineering work data 14A quoted from the data recording device DB2 is configured to be decrypted by the contractor's private key Gb of the secondary key release means 45. The contractor processing apparatus G30 stores the digest daily report data 34A and 2
6a, and has a function of inspecting for tampering. Similarly, digest civil works data 24A and 14
It has a function of comparing and inspecting A. Furthermore, it has a function of confirming that the contractor has actually performed the work from the electronic signature of the contractor.

As shown in FIG. 3 and FIG. 4, the orderer processing device Oh50 obtains a second daily report obtaining device Oh51 for obtaining daily report data 25A from the data recording device DB4 of the construction management server DB. A fourth hashing unit 54 that generates the digest daily report data 54A by hashing the daily report data 25A, the digest daily report data 26a from the data recording device DB6, the digest civil engineering work data 24A, and the electronic signature 38 are formed. And a tertiary key release means 59 for decrypting the secondary digest data file 42 using the contractor public key Ga.

Each data obtained by the citing means 55 is decrypted by the tertiary key unlocking means 59, and if it is correct by a check described later, it is possible to confirm that the orderer has confirmed the approval. Also, the digest civil engineering work data 14A quoted from the data recording device DB2.
A fourth key unlocking means 60 is provided to decrypt the key by the orderer's secret key Ob.

The orderer processing unit Oh50 outputs the digest daily report data 54A and 26
and has a function of checking for falsification by comparing with a. Similarly, it has a function of comparing and inspecting the digest civil work data 24A and the digest civil work data 14A. In addition, digest daily report data 54A and 2
6a, it is confirmed that no tampering has been performed during communication, and the digest daily report data 2
A tertiary keying means 66 is provided which is encrypted by the orderer private key Ob together with the electronic signature 65 obtained by adding the electronic signature of the orderer to 6a and recorded in the data recording device DB3 as the tertiary digest data file 63.

FIG. 5 shows a method of decoding the digest daily report data 26a which has been approved and confirmed at various places by the above-described configuration and means. That is, the digest daily report data 26a obtained from the data recording device DB3 is
With this public key Oa, the contractor, the contractor, and the orderer can be freely decrypted, and it can be confirmed from each electronic signature that the approval has been obtained at all stages.

As shown in FIG. 4, the construction management server DB stores data relating to the operation of the civil engineering construction management device 1 of the present configuration separately in the data recording devices DB1 to DB6 so that the data can be referenced (accessed). Have been.

FIG. 6 is a block diagram showing the outline of the grouting data management of the grouting work in relation to the contractor processor AS10, contractor processor G01, orderer processor Oh50 and the Internet INT. The grout injected into the boring hole AS16 is measured by the measuring device AS15, and raw data is collected as digital values by the injection data management device AS11 in the injection management room AS01. The raw data and the hashed digest civil engineering work data are used for GT
Along with the output of the daily report creation device 25 by the construction management device AS21, the output is connected to the contractor site office G01, the orderer's office Oh01, and the shared construction management server CS via the Internet INT.

FIG. 7 shows the relationship between distribution and authentication of a key and a digital signature for protecting the raw data of grout injection and the daily report data generated from the data to prevent tampering. The contractor S, the contractor G, and the orderer Oh hold a public key and a private key, respectively, and have been authenticated by a third party certification organization CA. The certification authority CA stores the public key in the database aDA
And the data is connected to the Internet INT.

A method of data management in the grouting work of the civil engineering work management device 1 having the above configuration will be described with reference to the work flowcharts of FIGS. In the work of the contractor shown in FIG. 8, grouting into the boring hole S16 is started in step S1. In step S2, the civil engineering work data 1 of the flow rate, pressure, and time obtained from the measuring device S15 by the injection management device S11, which is a civil engineering data management device,
3A is accumulated (first raw data collection step), and step S
At 2a, an input is made to the storage medium in the injection management device S11. In step S3, the end of the injection operation is confirmed. If the injection operation is completed, the process proceeds to step S4, and if not completed, the steps S2 and S2a are continued. In step S4, the civil engineering work data 13A is hashed to create digest civil engineering work data 14A (0th hashing step). In step S5, the digest civil work data 14A is transmitted to the public key O of the orderer and the contractor.
a, Encrypt with Ga (0th order keying step). In step S6, the encrypted data is transferred to the data recording device DB2 of the construction management server DB. Step S7
Then, the civil engineering work data 13A is transferred to the data recording device DB1 of the construction management server DB. Steps S1 to S7
Is the operation of the injection management device AS11.

Next, in step S8, the civil engineering work data 13A is acquired from the construction management server DB1 (second
Raw data collection process). In step S9, daily report data 25A is created from the civil engineering work data 13A and registered in the DB4 of the construction management server. In step S10, the civil engineering work data 13A is hashed to create digest civil engineering work data 24A (first hashing step). In step S11, the daily report data 25A is hashed to create digest daily report data 26a (secondary hashing step). In step S12, the digest civil engineering work data 24A and the digest daily report data 26a that have been digitally signed as a contractor are combined into one file. In step S13, the previous step S1
The primary digest data file 26d obtained by encrypting the file summarized in 2 with the contractor's private key Sb (primary locking step) is registered in the DB5 of the construction management server.
Steps S8 to S13 are operations of the construction management device S21.

In the work of the contractor shown in FIG.
Then, the first digest data file 26d is acquired from the construction management server DB. In step S22, the digest civil work data 24A and the digest daily report data 26a (PQ-
1, daily report) + Decrypt the electronic signature file 26c (first
Next key release process). In step S23, the digest civil engineering work data 14A is acquired from the construction management server DB,
Decrypt with the contractor's private key Gb (second key release step). In step S24, the daily report data 25A is obtained from the construction management server DB (first daily report obtaining step), and is hashed into a digest (third hashing step).

In step S25, digest civil works data 24A vs. 14A and digest daily report data 2
6a vs. 34 (first civil engineering work data tampering check step, first daily report tampering check step). If they match, the procedure goes to step S26. If they do not match, the procedure goes to step S30. In step S26, it is compared whether the digital signature belongs to a contractor. If the signature is legitimate of the contractor, the procedure goes to step S27. If the signature is irregular, the procedure goes to step S31.
go to. In step S27, the data contents are confirmed.
Next, in step S28, the digest daily report data 2
6a + digest civil engineering work data 24A + digital signature 2
6e (the contractor and the contractor) are encrypted as the collective secondary digest data file 42 with the contractor's private key Gb (secondary locking step). Step S2
In step 9, the encrypted secondary digest data file 42 is registered in the construction management server DB, and the process ends.

On the other hand, if the data does not match in step S25, it is checked in step S30 whether the electronic signature belongs to the contractor. If the determination is YES, the process goes to step S34, and it is determined that the data has been tampered with by the contractor. In step S35, the restructuring is instructed to the contractor.
Give a penalty etc. Then, the procedure goes to step S33. If the signature is not the one of the contractor in the electronic signature confirmation in step S30, it is determined in step S31 that another person has impersonated and submitted the data, and in step S32, the contractor is instructed to change the public key pair, Re-register the data. In step S33, the related digest daily report data 26a and the digest civil engineering work data 24A are improperly marked, and the process ends. If the electronic signature is confirmed to be YES in step S30, it is determined in step S34 that the contractor has tampered with the data, and in step S35, the contractor is instructed to perform reconstruction and a penalty is given.
Go to 33.

In the work of the orderer shown in FIG. 10, step S41 is performed.
Then, the secondary digest data file 42 is acquired from the construction management server DB. In step S42, the digest civil work data 24A is obtained using the contractor public key Ga.
And the digest daily report data 26a (PQ-1, daily report) + the electronic signature file 26e is decrypted (third key changing step). In step S43, the digest civil engineering work data 14A is acquired from the construction management server DB and decrypted with the orderer secret key Ob (fourth key release step). Step S
At 44, the daily report data 25A from the construction management server DB
(Second daily report obtaining step), and hashed to make a digest to create the digest daily report data 54 (fourth hashing step).

In step S45, the digest civil work data 24A vs. 14A and the digest daily report data 26
a is compared with 54A (second civil engineering work data alteration check step, second daily report alteration check step). If they match, the procedure goes to step S46. If they do not match, the procedure goes to step S50. In step S46, a comparison is made as to whether the electronic signature belongs to the contractor. If the contractor is regular, step S
Go to 47, and if invalid, go to step S51. In step S47, the data contents are confirmed. Next, in step S48, the digest daily report data 26a and the electronic signature 65 (constructor, contractor, orderer) are collected in a third batch.
The next digest data file 63 is encrypted with the orderer's private key Ob (third keying step). In step S49, the encrypted third digest data file 63 is registered in the construction management server DB, and the process ends.

On the other hand, if the data does not match in step S45, it is checked in step S50 whether the electronic signature belongs to the contractor. If YES, the order goes to step S54, and it is determined that the orderer has tampered with the data. In step S55, rebuilding is instructed to the orderer, and a penalty or the like is given. Next, the procedure goes to step S53. In the electronic signature confirmation in step S46 and step S50,
In step S51 when the signature is not that of the contractor,
It is determined that another person has impersonated the data, and in step S52, the orderer is instructed to change the public key pair, and the data is re-registered. In step S53, the relevant daily report data and digest data file are marked illegally, and the process ends.

FIG. 11 shows, with reference to FIG. 5, a flow for the related companies to confirm whether or not the civil engineering work has been approved. In step S61, the tertiary digest data file 63 is obtained from the construction management server DB and decrypted with the orderer public key Oa. In step S62, the orderer's electronic signature is confirmed, and if YES, the approval of the construction is confirmed in step S63, and procedures such as settlement are performed in step S64. On the other hand, if the orderer's signature is incorrect in the electronic signature in step S62, it is determined in step S65 that another person has impersonated the orderer and has been authenticated. In step S66, the orderer is notified of the change of the public key pair. Next, in step S67, the third digest file 63 is improperly marked. As described above, paperless, work and management data can be managed to prevent unauthorized tampering and spoofing.
Approval can be performed reliably.

It should be noted that the above-described embodiment is merely an example, and the method and apparatus of the present invention are not limited to the illustrated embodiment, and may include injection management of various injection methods, injection management of a high-pressure injection stirring method, and deep mixing processing. Applicable to civil engineering and architectural civil engineering work such as soil improvement management of construction methods, shield excavation management, measurement management, anchor tension data management, etc.

[0039]

The effects of the present invention are listed below. (1) Civil engineering work data confidentiality, falsification, spoofing, etc. can be prevented. In addition, it becomes clear at which stage the data was forged or altered. In addition, since the approval act is digitized, the approval operation becomes paperless, and the result can be quickly confirmed. (2) Since it is basically paperless, there is no need to issue or store paper documents, and space can be saved. (3) It is possible to check the progress of civil engineering work and to confirm civil engineering work data in real time. (4) Since information is centrally managed, information can be shared between the site and the construction management side, and various responses can be made promptly. (5) Since the Internet is used, information exchange, search, and other operations can be performed at low cost, and the reliability is high.

[Brief description of the drawings]

FIG. 1 is a block diagram of a construction company processing device in work data processing according to an embodiment of the present invention.

FIG. 2 is a block diagram of a contractor processing device for the work data processing.

FIG. 3 is a block diagram of an orderer processing device for the work data processing.

FIG. 4 is a block diagram showing a construction management server that unifies work data and management information.

FIG. 5 is a block diagram showing a means for examining the approval confirmation status of digest daily report data from an orderer, a contractor, and a contractor.

FIG. 6 is a block diagram showing a comprehensive management system according to the embodiment of the present invention.

FIG. 7 is a block diagram showing registration of a key and a signature with a certificate authority.

FIG. 8 is a work flowchart of a contractor.

FIG. 9 is a work flowchart of a contractor.

FIG. 10 is a work flowchart of an orderer.

FIG. 11 is a flowchart for approval confirmation work in each department.

FIG. 12 is an analog chart of conventional injection data in grouting.

FIG. 13 shows a conventional grout management daily report.

FIG. 14 shows a conventional grout summary daily report.

FIG. 15 is a block diagram showing an outline of a conventional technique for encrypting information using a secret key and a public key to protect confidentiality and prevent data tampering.

[Explanation of Signs] DB: Network management device DB1, 2, 3, 4, 5, 6, Recording device G30: Order processing device G31: First daily report acquisition device Oh50: Ordering device processing device Oh51, second daily report acquisition device S10, construction contractor processing device S11, injection management device S21, GT construction management device 13, ... first raw data collection device 13A, civil engineering work data 14, ... 0th-order hashing means 14A... Digest civil engineering work data 15, 28, 40, 66... 0th, 1st, 2nd, 3rd-order locking means 23... 2nd raw data collection device 24. Secondary hashing means 24A Digest civil engineering work data 25 ... Daily report creation means 25A ... Daily report 26 ... Secondary hashing means 26a Digest daily report data 26c Digital signature File 26d: primary digest data file 34: tertiary hashing means 35: citing means 35A: file 39: primary key release means 42: secondary digest data file 45 ... Secondary key release means 54 ... Third-order hashing means 54A ... Digest daily report data 55 ... Citation means 59 ... Third-key release means 63 ... Third-order digest Data file 65: Digital signature file

 ────────────────────────────────────────────────── ─── Continuing on the front page (72) Inventor Yorihiro Tanaka 8-14-14 Ginza, Chuo-ku, Tokyo N-Tokuken Construction Co., Ltd. F-term (reference) 2D040 AB01 AB03 AB05 BB09 CB03 FA00 GA00 2D054 AC01 GA00

Claims (6)

[Claims] A construction company collects civil work data as digital values and registers it in a construction management server, and also hashes the civil work data into digest civil work data to obtain public keys of an orderer and a contractor. Civil work data management step of encrypting and registering in the construction management server, acquiring civil engineering data from the construction management server, hashing the civil engineering data to digest civil engineering data, and daily report data While creating and registering it in the construction management server, the daily report data is hashed into digest daily report data, an electronic signature is attached together with the digest civil engineering work data, collectively encrypted with the contractor's private key, and digested as a digest data file The construction management process to be registered in the construction management server and the The digest data file, the digest civil engineering work data, and the daily report data are obtained from the data, the digest data file and the digest civil engineering work data are respectively decoded, and the daily report data is hashed into digest daily report data, and the digest daily report is obtained. The data and the decrypted daily report data are compared with the decrypted digest data file and the digest civil engineering work data, respectively, to check for tampering. The orderer processing step of encrypting with the orderer's private key and registering it as a digest data file in the construction management server;
A step of obtaining each data from the construction management server, decrypting the data with a public key, and approving and confirming the construction result. . 2. A contractor who receives an order for civil engineering work from an orderer obtains the digest data file, the digest civil engineering work data, and the daily report data from the construction management server, and obtains the digest data file and the digest civil engineering work data. And hashing the daily report data to produce digest daily report data, and comparing the daily report data with the decrypted daily report data, and the decrypted digest data file with the digest civil engineering work data to check for tampering. 2. The civil engineering work management method according to claim 1, further comprising a contractor processing step of adding an electronic signature collectively to the data, encrypting the data with a secret key of the contractor, and registering the data in the construction management server if tampering is not recognized. 3. The civil work data management step includes: a first raw data collection step of collecting civil work data as digital values and registering the data in a construction management server; and a first raw data collection step. A 0th hashing process in which the collected civil engineering work data is hashed into the 0th digest civil engineering work data, and the 0th digest civil engineering work data is encrypted with the public key of the ordering side and registered in the construction management server. A second raw data collection step of acquiring civil engineering data from a construction management server, and creating daily report data from the civil engineering data to perform construction management. A first report for creating a daily report to be registered in the server and a first digest civil engineering work data obtained by hashing the civil engineering work data obtained in the second raw data collecting step. A hashing step, a secondary hashing step of hashing the daily report data to produce digest daily report data, and the digest daily report data and the first
A first keying step of batch-collecting the next digest civil engineering work data and the contractor's digital signature as a first digest data file, encrypting the data with the contractor's secret key, and registering the same in the construction management server. Item 1 or 2 civil engineering construction management method. 4. The orderer processing step is a second daily report acquisition step of acquiring daily report data from the construction management server and confirming the contents, and a fourth step of hashing the daily report data to obtain digest daily report data. A hashing step, a tertiary key unlocking step of obtaining and decrypting the last digest data file from the construction management server, and a fourth order obtaining and decrypting the zeroth digest civil engineering data from the construction management server. A key unlocking process, and a second civil engineering data tampering check process for comparing and confirming the digest civil engineering work data decrypted in the third key unlocking process with the digest civil engineering data decrypted in the fourth key unlocking process. A second daily report for comparing and confirming the digest daily report data in the fourth hashing step with the digest daily report data decrypted in the third key release step A data tampering check step and a tertiary locking step in which an electronic signature of the orderer is added to the daily report data that has passed the second daily report data tampering check step, encrypted with the orderer's private key, and registered in the construction management server. The civil engineering construction management method according to any one of claims 1 to 3, comprising: 5. The contractor processing step is a first daily report acquisition step of acquiring daily report data from the construction management server and confirming the contents, and a third step of hashing the daily report data into digest daily report data. A hashing process, a primary key unlocking process for obtaining and decrypting a primary digest data file from the construction management server, and a secondary decryption acquiring and decrypting the zeroth digest civil engineering data from the construction management server. A key unlocking process, and a first civil engineering data tampering check process for comparing and confirming the digest civil engineering data decrypted in the first key unlocking process with the digest civil engineering data decrypted in the second key unlocking process. A first daily report data for comparing and confirming the digest daily report data in the third hashing step with the digest daily report data decrypted in the first key release step; Data tampering check process and its first
3. A secondary keying step of adding a contractor's digital signature to the daily report data that has passed the next daily report data tampering check step, encrypting it with the contractor's private key, and registering it in the construction management server. Or any of the four civil engineering management methods. 6. A contractor processing device used by a contractor, a contractor processing device used by a contractor, an orderer processing device used by an orderer, and data related to each of the processing devices are unified. And a construction management server that manages the
The construction contractor processing device includes a first raw data collection device that collects the civil engineering data as digital values, and a 0th-order digest obtained by hashing the civil engineering data collected by the first raw data collection device. A civil engineering work data management device comprising a hashing means, a zero-order locking means for encrypting the digested digest civil engineering work data with the public keys of the orderer and the contractor, and digitizing from the construction management server A second raw data collection device that collects the obtained civil engineering data, a primary hashing unit that hashes the civil engineering data into a digest, and a civil engineering work collected by the second raw data collection device. Daily report creating means for creating a daily report from data, secondary hashing means for hashing the daily report to create a digest, The digest daily report data digested by the hashing means, the digest civil engineering work data digested by the primary hashing means, and the contractor's electronic signature are collectively collected as the first digest data file, and the contractor's private key A construction management device comprising a primary locking means for encrypting the data in the first order, and the contractor processing device comprises: a first daily report acquisition device for acquiring daily report data from the construction management server; Tertiary hashing means for hashing the daily report data to produce a digest, primary key release means for decrypting the primary digest data file encrypted by the primary keying means, Secondary key release means for decrypting the digest civil engineering work data encrypted by the keying means, and a primary digest decrypted by the primary key release means Secondary locking means for confirming that the digest daily report data and the digest civil work data of the data file are not falsified, adding a contractor's name to the electronic signature, and encrypting the data as a second digest data file with the contractor's private key. The orderer processing device comprises: a second daily report acquisition device for acquiring daily report data from the construction management server; a fourth hashing means for hashing the daily report to make a digest; Tertiary key unlocking means for decrypting the secondary digest data file encrypted by the secondary locking means, and decryption of the civil engineering work data encrypted by the zeroth locking means. Quaternary key release means, the third
After confirming that the digest daily report data and the digest civil engineering work data of the secondary digest data file decrypted by the secondary key release means are not falsified, an orderer's name is added to the digest daily report data of the secondary digest data file and electronically signed A third lock means for encrypting the third digest data file with a private key of the orderer, and a third digest data file.