CN108650242B - Confidential topographic map transmission method, system and system using method - Google Patents
Confidential topographic map transmission method, system and system using method Download PDFInfo
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- CN108650242B CN108650242B CN201810365037.2A CN201810365037A CN108650242B CN 108650242 B CN108650242 B CN 108650242B CN 201810365037 A CN201810365037 A CN 201810365037A CN 108650242 B CN108650242 B CN 108650242B
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L63/00—Network architectures or network communication protocols for network security
- H04L63/04—Network architectures or network communication protocols for network security for providing a confidential data exchange among entities communicating through data packet networks
- H04L63/0428—Network architectures or network communication protocols for network security for providing a confidential data exchange among entities communicating through data packet networks wherein the data content is protected, e.g. by encrypting or encapsulating the payload
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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
- H04L9/08—Key distribution or management, e.g. generation, sharing or updating, of cryptographic keys or passwords
- H04L9/0894—Escrow, recovery or storing of secret information, e.g. secret key escrow or cryptographic key storage
- H04L9/0897—Escrow, recovery or storing of secret information, e.g. secret key escrow or cryptographic key storage involving additional devices, e.g. trusted platform module [TPM], smartcard or USB
Abstract
The invention discloses a transmission method of a confidential topographic map, which comprises the following steps: storing the on-site collected confidential topographic map data and the mapping control point result table in a sending confidential machine, calculating the relative relationship between the confidential map data and the mapping control point result table by the sending confidential machine, and transmitting the relative relationship data and the translated topographic map data to a sending intermediate machine; the sending intermediate machine receives two kinds of data; the sending non-secret machine receives the two kinds of data and sends the data to the Internet; the receiving non-secret machine receives the two kinds of data and transmits the two kinds of data to the receiving intermediate machine; the receiving intermediate machine receives the two kinds of data and transmits the two kinds of data to the receiving secrecy machine; the receiving security machine receives the two data and calculates and removes the relative relation with a mapping control point result table stored in the receiving security machine, and the collection point coordinates on the topographic map collected on site are obtained; and restoring the original confidential topographic map by using the coordinates of the acquisition points and the topographic map data after the translation. The invention also provides a transmission system of the confidential topographic map and a using method of the system. The invention has the beneficial effects that: the transmission speed is high, and the transmission data is safe.
Description
Technical Field
The invention relates to the technical field of pipeline construction and surveying and mapping, in particular to a transmission method, a transmission system and a use method of a confidential topographic map.
Background
For secret topographic map network transmission, the mode mainly adopted at present is manual acquisition and transmission, and the transmission mode has the defects of low transmission speed, high cost, incapability of realizing real-time transmission, easiness in file loss, damage, theft and disclosure and incapability of meeting the requirements of intelligent pipeline construction; a mode of increasing a fixed constant is also adopted, and the transmission mode belongs to simple translation of a confidential topographic map and is easy to crack and divulge a secret; and the method adopts a mode of directly replacing the file name without any change of the content, and the confidentiality is lowest, and related regulations are violated.
Disclosure of Invention
In order to solve the above problems, an object of the present invention is to provide a method, a system and a method for transmitting a confidential topographic map, which can realize network transmission of the confidential topographic map, the transmission process is automated and real-time, and no secret leakage occurs during the transmission process.
The invention provides a transmission method of a confidential topographic map, which comprises the following steps:
step 1, storing acquisition point coordinate data formed by 4 map root control points or 4 picture frame corner points or 4 ground object corner point coordinate values in data of a secure topographic map for on-site surveying and a surveying and mapping control point result table of a coordinate system same as that of the secure topographic map in a sending secure machine, respectively marking the acquisition points as first data and second data, and respectively marking the 4 acquisition points as No. 1 acquisition points to No. 4 acquisition points;
step 2, in the sending security machine, translating the surveyed security topographic map at any distance and rotating at any angle to form translated topographic map data, and marking the translated topographic map data as fourth data, wherein the translation distance is more than 100 meters;
step 3, the sending secrecy machine calculates the first data and the second data into non-secrecy data with a relative relation, records the non-secrecy data as third data, and transmits the third data and the fourth data to a sending intermediate machine through a sending secrecy U disk;
step 4, the sending intermediate machine receives third data and fourth data transmitted by the sending secret U disk and transmits the third data and the fourth data to a sending non-secret U disk;
step 5, the sending non-secret machine receives third data and fourth data transmitted by the sending non-secret USB flash disk, and sends the third data and the fourth data to the Internet;
step 6, the receiving non-secret machine receives the third data and the fourth data from the internet, and transmits the third data and the fourth data to the receiving intermediate machine through the receiving non-secret U disk;
step 7, the receiving intermediate machine receives the third data and the fourth data transmitted by the receiving non-secret U disk, and transmits the third data and the fourth data to the receiving secret machine through the receiving secret U disk;
step 8, the receiving security machine receives third data and fourth data transmitted by the receiving security U disk, calculates the third data and a mapping control point result table stored in the receiving security machine in advance, namely second data, and removes a relative relation to obtain first data, and acquires acquisition point coordinate data on a mapped security topographic map;
step 9, drawing correct acquisition point positions in drawing software by using the acquisition point coordinate data in the receiving security machine, namely obtaining correct coordinates of 4 acquisition points;
step 10, importing the fourth data into the receiving security machine, and performing reverse translation on the translated topographic map by using one correct acquisition point location as a base point, and translating the topographic map back to a correct position;
step 11, reversely rotating the topographic map translated back to the correct position by using another correct acquisition point position in the receiving security machine to obtain an original security topographic map;
and 12, performing precision inspection on the finally obtained topographic map by using the rest two correct acquisition point points in the receiving security machine, and finally obtaining the original secure topographic map after the transmission of the secure topographic map is proved to be successful if the topographic map is qualified through inspection.
As a further explanation of the present invention, in step 3, when the relative relationship between the first data and the second data is calculated, a method is adopted in which: and taking any point in the mapping control point result table as a calculated reference point (X, Y), and calculating a coordinate increment between an acquisition point coordinate (X, Y) and the reference point (X, Y) on the mapped confidential topographic map as third data, wherein X is an acquisition point longitudinal coordinate value, Y is an acquisition point horizontal coordinate value, X is a reference point longitudinal coordinate value, and Y is a reference point horizontal coordinate value.
As a further description of the present invention, the method for calculating the coordinate increment between the acquisition point and the reference point comprises:
the ordinate increment Δ X ═ X-X;
the abscissa increment Δ Y is Y-Y;
in the formula, X is an acquisition point longitudinal coordinate value, Y is an acquisition point horizontal coordinate value, X is a datum point longitudinal coordinate value, and Y is a datum point horizontal coordinate value.
As a further explanation of the present invention, in step 8, the relative relationship between the second data and the third data is released, and the first data is calculated by:
acquiring point ordinate values X which are acquired on the topographic map are X-delta X;
acquiring point abscissa values Y which are acquired on the topographic map are Y-delta Y;
wherein X is the longitudinal coordinate value of the datum point, Y is the transverse coordinate value of the datum point, Delta X is the longitudinal coordinate increment, and Delta Y is the transverse coordinate increment.
As a further description of the present invention, in step 1, the 4 collection points selected in the confidential topographic map are the center of a graph root point, the center of a circular important feature, the intersection point of a frame, and the corner point of the important feature, and the collected confidential topographic map has no labeled coordinates.
As a further explanation of the present invention, in step 10, translation is performed with the collection point No. 1 as a base point: inputting a translation command, selecting a translation topographic map, capturing and selecting No. 1 acquisition points in the translation topographic map as translation base points, taking the translation base points as the base points to translate the whole topographic map, and translating the base points to the correct No. 1 acquisition point positions drawn in the step 9;
in step 11, the topographic map is reversely rotated by the No. 2 acquisition point: selecting a rotated topographic map, inputting a rotation command, capturing and selecting a correct acquisition point No. 1 as a rotation base point, capturing and selecting a correct acquisition point No. 1 as a rotation reference angle base point, capturing and selecting an acquisition point No. 2 on the topographic map as a second point of a reference angle, capturing and selecting a correct acquisition point No. 2 as a new point of the reference angle, and rotating the acquisition point No. 2 and the whole topographic map by a rotation angle relative to the correct acquisition point No. 1;
in step 12, in the topographic map which is finished rotating, the coordinate values of the No. 3 acquisition point and the No. 4 acquisition point are respectively compared with the correct coordinate of the No. 3 acquisition point and the correct coordinate of the No. 4 acquisition point in the step 9, the calculation is poor, if the poor is less than 0.5mm, the test is qualified, the transmission of the confidential topographic map is successful, if the poor is more than 0.5mm, the rotating angle value is recalculated, the decimal number of the angle value is increased, the angle precision is improved, and the topographic map is rotated again until the success is achieved.
As a further explanation of the invention, during translation, the capture selection method is replaced by directly inputting the correct coordinate values of the acquisition point No. 1 acquired in the step 9 to complete translation.
As a further explanation of the present invention, the specific method of counter-rotation in step 11 is replaced by:
first, the rotation angle a is calculated:
A＝A2-A1；
A2＝arctan((y2-Y1)/(x2-X1))+AC2；
A1＝arctan((Y2-Y1)/(X2-X1))+AC1；
in the formula, x2Is a longitudinal coordinate value after the translation of No. 2 acquisition point, namely a false longitudinal coordinate value y of No. 2 acquisition point2The true coordinate value of the No. 2 acquisition point is an abscissa value after translation of the No. 2 acquisition point, namely a false abscissa value of the No. 2 acquisition point, X1 is an ordinate value of the No. 1 acquisition point, namely a true ordinate value of the No. 1 acquisition point, Y1 is an abscissa value of the No. 1 acquisition point, namely a true abscissa value of the No. 1 acquisition point, X2 is an ordinate value of the No. 2 acquisition point, namely a true ordinate value of the No. 2 acquisition point, Y2 is an abscissa value of the No. 2 acquisition point, namely a true abscissa value of the No. 2 acquisition point, A1 is an azimuth angle of the true coordinate value of the No. 2 acquisition point relative to the true coordinate value of the No. 1 acquisition point, and A2 is an azimuth angle;
both AC2 and AC1 are azimuth correction parameters, determined by the azimuth quadrant:
when Y-Y1 > 0 and X-X1 > 0, AC2 is 0;
when X-X1 < 0, AC2 ═ 180;
when Y-Y1 < 0 and X-X1 > 0, AC2 is 360;
when Y2-Y1 > 0 and X2-X1 > 0, AC1 is 0;
when X2-X1 < 0, AC1 is 180;
when Y2-Y1 < 0 and X2-X1 > 0, AC1 is 360;
after the rotation angle A is calculated, a topographic map to be rotated is selected, a rotation command is input, the No. 1 acquisition point is captured and selected as a reference point, and the rotation angle A is input to complete rotation.
The invention also provides a transmission system of the confidential topographic map, which comprises:
the sending confidential machine is used for storing acquisition point coordinate data formed by 4 map root control points or 4 picture frame corner points or 4 ground object corner point coordinate values in confidential topographic map data of field surveying, a surveying and mapping control point result table in the same coordinate system as the confidential topographic map and the surveyed confidential topographic map, translating at any distance and rotating at any angle to form translated topographic map data, respectively recording the translated topographic map data as first data, second data and fourth data, calculating the first data and the second data into non-confidential data with a relative relationship, recording the non-confidential data as third data, and transmitting the third confidential data and the fourth data to a sending intermediate machine through a sending U disk;
the sending intermediate machine is used for receiving third data and fourth data transmitted by the sending secret U disk and transmitting the third data and the fourth data to a sending non-secret U disk;
the sending non-secret machine is used for receiving third data and fourth data transmitted by the sending non-secret USB flash disk and sending the third data and the fourth data to the Internet;
the receiving non-secret machine is used for receiving the third data and the fourth data from the Internet and transmitting the third data and the fourth data to the receiving intermediate machine through the receiving non-secret U disk;
the receiving intermediate machine is used for receiving the third data and the fourth data transmitted by the receiving non-secret USB flash disk and transmitting the third data and the fourth data to the receiving secret machine through the receiving secret USB flash disk;
and the receiving security machine is used for storing a mapping control point result table, namely second data, receiving third data and fourth data transmitted by the receiving security USB flash disk, calculating the third data and the second data together to remove the relative relationship to obtain first data, acquiring coordinates of acquisition points on a security topographic map mapped on site, performing reverse translation and reverse rotation on the translated topographic map by using correct coordinates of the acquisition points to obtain an original security topographic map, and performing precision inspection on the recovered security topographic map.
The invention also provides a use method of the secret topographic map transmission system, which comprises the following steps:
step S1, compiling a control point file, namely second data;
step S2, the control point file is brought to the construction site;
step S3, the control point file is taken to other office places needing to receive the confidential topographic map;
s4, collecting coordinates of 4 collection points in the confidential topographic map on a construction site, and compiling a collection point file, namely first data;
step S5, storing the second data and the first data in a sending secure machine;
step S6, calculating a relation data file in the sending security machine, namely third data;
step S7, in the sending crypto, translating the confidential topographic map at any distance and rotating at any angle to form translated topographic map data, and recording the translated topographic map data as fourth data, wherein the translation distance is more than 100 meters;
step S8, the third data and the fourth data are accessed to a sending intermediate machine through a sending secret U disk;
step S9, the sending secret U disk and the sending non-secret U disk are sterilized on the sending intermediate machine, and the third data and the fourth data are transmitted to the sending non-secret U disk;
step S10, the third data and the fourth data are transmitted to a sending non-secret machine through the sending non-secret U disk;
step S11, the sending non-secret machine sends the third data and the fourth data to the Internet;
step S12, the receiving non-secret machine receives the third data and the fourth data from the Internet, and the third data and the fourth data are transmitted to the receiving intermediate machine through the receiving non-secret U disk;
step S13, the receiving intermediate machine kills virus to the receiving secret U disk and the receiving non-secret U disk, and transmits the third data and the fourth data to the receiving secret U disk;
step S14, storing the second data in the receiving secure machine;
step S15, transferring the third data and the fourth data to the receiving security machine through the receiving security usb disk;
step S16, calculating the third data and the second data in the receiving security machine, and restoring the coordinates of the acquisition points on the security topographic map acquired on site, namely the first data;
step 17, in the receiving security machine, drawing the first data into a topographic map to obtain the correct position of an acquisition point in the topographic map;
step S18, the translated topographic map is reversely translated in the receiving security machine by using the correct position of the acquisition point;
step S19, reversely rotating the terrain map after reverse translation in the receiving security machine to obtain an original security terrain map;
and step S20, performing precision inspection on the terrain map subjected to the reverse translation and the reverse rotation in the receiving security machine, and if the terrain map is qualified, proving that the transmission of the security terrain map is successful, and finally obtaining the original security terrain map.
The invention has the beneficial effects that:
collecting characteristic points of a confidential topographic map collected on site to obtain 4 groups of accurate collection point coordinate data, calculating the collection point coordinate data and control point coordinate data (namely a surveying and mapping control point result table in the same coordinate system as the confidential topographic map) together to obtain relationship data, stripping confidential components from the relationship data, calculating the relationship data on line with the surveying and mapping control point result table data to restore collection point coordinates, translating and rotating the confidential topographic map of collection points on a working site to ensure that the confidential coordinate data does not have confidential coordinate information, namely becoming a non-confidential topographic map, reversely translating the topographic map and reversely rotating the topographic map of collection points at a receiving end after network transmission, ensuring that the restored topographic map has confidential coordinates, the precision meets the requirement, the secret data is transmitted under the wire or is placed in a secret place in advance in the mode, and the secret data is transmitted on the non-secret data wire without manual transmission, so that the time and the cost are saved, and the real-time performance and the efficiency of transmission are improved;
data transmitted by a network, namely relative relation data, is not a simple encryption algorithm, but acquired coordinates are subjected to geometric transformation, the relative relation data comprise distance, coordinate increment, a topographic map after translation and rotation and the like, and the data cannot be realized by the simple encryption algorithm, so that an acquirer cannot calculate correct confidential coordinates even if the data are intercepted in the network transmission process, further cannot acquire the confidential topographic map data, and the transmission safety of the confidential topographic map is improved;
because the collected coordinate data, the translation distance and the rotation angle are variable and random, the relative relation data transmitted each time are also variable and random, and the safety of the transmission process is further improved.
Drawings
Fig. 1 is a schematic diagram of a transmission system for a secure topographic map according to an embodiment of the present invention.
Detailed Description
The present invention will be described in further detail below with reference to specific embodiments and with reference to the attached drawings.
Embodiment 1, a method for transmitting a secure topographic map, comprising:
step 1, storing acquisition point coordinate data formed by 4 map root control points or 4 picture frame corner points or 4 ground object corner point coordinate values in confidential topographic map data surveyed on a pipeline construction site and a surveying and mapping control point result table of a coordinate system same as that of the confidential topographic map in a sending security machine, respectively marking the acquisition points as first data and second data, and respectively marking the 4 acquisition points as No. 1 acquisition points to No. 4 acquisition points;
step 2, in a sending secrecy machine, translating the surveyed secrecy topographic map at any distance and rotating at any angle to form translated topographic map data, and marking the translated topographic map data as fourth data, wherein the translation distance is more than 100 meters;
step 3, the sending secrecy machine calculates the first data and the second data into non-secrecy data with a relative relation, records the non-secrecy data as third data, and transmits the third data and the fourth data to a sending intermediate machine through a sending secrecy U disk;
step 4, the sending intermediate machine receives third data and fourth data transmitted by the sending secret U disk and transmits the third data and the fourth data to the sending non-secret U disk;
step 5, the sending non-secret machine receives third data and fourth data transmitted by the sending non-secret USB flash disk and sends the third data and the fourth data to the Internet;
step 6, the receiving non-secret machine receives third data and fourth data from the internet, and transmits the third data and the fourth data to the receiving intermediate machine through the receiving non-secret U disk;
step 7, the receiving intermediate machine receives the third data and the fourth data transmitted by the receiving non-secret U disk, and transmits the third data and the fourth data to the receiving secret machine through the receiving secret U disk;
step 8, the receiving security machine receives third data and fourth data transmitted by the receiving security U disk, calculates the third data and a mapping control point result table which is pre-stored in the receiving security machine, namely second data together to remove the relative relation, obtains first data, and obtains acquisition point coordinate data on a mapped security topographic map;
step 9, drawing correct acquisition point positions in drawing software by using the acquisition point coordinate data in the receiving security machine, namely obtaining correct coordinates of 4 acquisition points; wherein, the drawing software can adopt CAD software and the like;
step 10, importing fourth data into the receiving security machine, and performing reverse translation on the translated topographic map by using one correct acquisition point position as a base point and translating the topographic map back to a correct position;
step 11, reversely rotating the topographic map translated back to the correct position by using another correct acquisition point position in the receiving security machine to obtain an original security topographic map;
and 12, performing precision inspection on the finally obtained topographic map by using the rest two correct acquisition point points in the receiving security machine, and finally obtaining the original secure topographic map after the transmission of the secure topographic map is proved to be successful if the topographic map is qualified through inspection.
Further, in step 3, when the relative relationship between the first data and the second data is calculated, the method adopted is as follows: and taking any point in the mapping control point result table as a calculated reference point (X, Y), and calculating a coordinate increment between an acquisition point coordinate (X, Y) and the reference point (X, Y) on the mapped confidential terrain map as third data, wherein X is an acquisition point longitudinal coordinate value, Y is an acquisition point horizontal coordinate value, X is a reference point vertical coordinate value, and Y is a reference point horizontal coordinate value.
When the above method of calculating the relative relationship is adopted, the method of calculating the coordinate increment between the acquisition point and the reference point is as follows:
the ordinate increment Δ X ═ X-X;
the abscissa increment Δ Y is Y-Y;
in the formula, X is an acquisition point longitudinal coordinate value, Y is an acquisition point horizontal coordinate value, X is a datum point longitudinal coordinate value, and Y is a datum point horizontal coordinate value.
Further, in step 8, the relative relationship between the second data and the third data is released, and the method for calculating the first data is as follows:
acquiring point ordinate values X which are acquired on the topographic map are X-delta X;
acquiring point abscissa values Y which are acquired on the topographic map are Y-delta Y;
wherein X is the longitudinal coordinate value of the datum point, Y is the transverse coordinate value of the datum point, Delta X is the longitudinal coordinate increment, and Delta Y is the transverse coordinate increment.
Further, in step 1, in the sending security machine, 4 primitive control points, or frame corner points, or ground object corner points need to be selected from the security topographic map as collection points, and these collection points are characterized by easy identification, easy measurement, and uneasy confusion, and preferably are the circle centers of the primitive points, the circle centers of circular important ground objects, the intersection points of the frame, the corner points of the important ground objects, and the like, and the collected security topographic map has no labeled coordinates.
Further, in step 10, translation is performed with the collection point No. 1 as a base point: inputting a translation command, selecting a translation topographic map, capturing and selecting No. 1 acquisition points in the translation topographic map as translation base points, taking the translation base points as the base points to translate the whole topographic map, and translating the base points to the correct No. 1 acquisition point positions drawn in the step 9;
in step 11, the topographic map is reversely rotated by the No. 2 acquisition point: selecting a rotated topographic map, inputting a rotation command, capturing and selecting a correct acquisition point No. 1 as a rotation base point, capturing and selecting a correct acquisition point No. 1 as a rotation reference angle base point, capturing and selecting an acquisition point No. 2 on the topographic map as a second point of a reference angle, capturing and selecting a correct acquisition point No. 2 as a new point of the reference angle, and rotating the acquisition point No. 2 and the whole topographic map by a rotation angle relative to the correct acquisition point No. 1;
in step 12, in the topographic map which is finished rotating, the coordinate values of the No. 3 acquisition point and the No. 4 acquisition point are respectively compared with the correct coordinate of the No. 3 acquisition point and the correct coordinate of the No. 4 acquisition point in the step 9, the calculation is poor, if the poor is less than 0.5mm, the test is qualified, the transmission of the confidential topographic map is successful, if the poor is more than 0.5mm, the rotating angle value is recalculated, the decimal number of the angle value is increased, the angle precision is improved, and the topographic map is rotated again until the success is achieved.
Certainly, in step 10, the translation target point is the correct point position of the acquisition point No. 1 drawn in step 9, and may not be selected by using a capturing method, and the capturing selection method is replaced by directly inputting the correct coordinate value of the acquisition point No. 1 obtained in step 9 to complete translation.
Further, the specific method of the reverse rotation in step 11 is replaced by:
first, the rotation angle a is calculated:
A＝A2-A1；
A2＝arctan((y2-Y1)/(x2-X1))+AC2；
A1＝arctan((Y2-Y1)/(X2-X1))+AC1；
in the formula, x2Is No. 2The longitudinal coordinate value after the translation of the acquisition point is a false longitudinal coordinate value y of No. 2 acquisition point2The true coordinate value of the No. 2 acquisition point is an abscissa value after translation of the No. 2 acquisition point, namely a false abscissa value of the No. 2 acquisition point, X1 is an ordinate value of the No. 1 acquisition point, namely a true ordinate value of the No. 1 acquisition point, Y1 is an abscissa value of the No. 1 acquisition point, namely a true abscissa value of the No. 1 acquisition point, X2 is an ordinate value of the No. 2 acquisition point, namely a true ordinate value of the No. 2 acquisition point, Y2 is an abscissa value of the No. 2 acquisition point, namely a true abscissa value of the No. 2 acquisition point, A1 is an azimuth angle of the true coordinate value of the No. 2 acquisition point relative to the true coordinate value of the No. 1 acquisition point, and A2 is an azimuth angle;
both AC2 and AC1 are azimuth correction parameters, determined by the azimuth quadrant:
when Y-Y1 > 0 and X-X1 > 0, AC2 is 0;
when X-X1 < 0, AC2 ═ 180;
when Y-Y1 < 0 and X-X1 > 0, AC2 is 360;
when Y2-Y1 > 0 and X2-X1 > 0, AC1 is 0;
when X2-X1 < 0, AC1 is 180;
when Y2-Y1 < 0 and X2-X1 > 0, AC1 is 360;
after the rotation angle A is calculated, a topographic map to be rotated is selected, a rotation command is input, the No. 1 acquisition point is captured and selected as a reference point, and the rotation angle A is input to complete rotation.
Embodiment 2, as shown in fig. 1, a secure topographic map transmission system, comprising:
the sending confidential machine is used for storing acquisition point coordinate data formed by 4 map root control points or picture frame corner points or ground object corner point coordinate values in confidential topographic map data of field surveying, a surveying control point result table in the same coordinate system as the confidential topographic map and the surveyed confidential topographic map, and forming topographic map data after translation after arbitrary translation and arbitrary rotation by a certain angle, wherein the topographic map data are respectively marked as first data, second data and fourth data, the first data and the second data are calculated into non-confidential data with a relative relationship and are marked as third data, and the third data and the fourth data are transmitted to a sending intermediate machine through a sending confidential U disk;
the sending intermediate machine is used for receiving the third data and the fourth data transmitted by the sending secret U disk and transmitting the third data and the fourth data to the sending non-secret U disk;
the sending non-secret machine is used for receiving third data and fourth data transmitted by the sending non-secret USB flash disk and sending the third data and the fourth data to the Internet;
the receiving non-secret machine is used for receiving the third data and the fourth data from the Internet and transmitting the third data and the fourth data to the receiving intermediate machine through the receiving non-secret U disk;
the receiving intermediate machine is used for receiving the third data and the fourth data transmitted by the non-secret USB flash disk and transmitting the third data and the fourth data to the receiving secret machine through the receiving secret USB flash disk;
and the receiving security machine is used for storing a mapping control point result table, namely second data, receiving third data and fourth data transmitted by the security USB flash disk, calculating the third data and the second data together to remove the relative relationship to obtain first data, acquiring acquisition point coordinates on the security topographic map of field mapping, performing reverse translation and reverse rotation on the translated topographic map by using correct coordinates of the acquisition points to obtain an original security topographic map, and performing precision inspection on the recovered security topographic map.
The first data is collected on site and collected coordinates of collection points of the confidential topographic map, the second data is obtained by surveying and mapping before construction, the two data belong to confidential data and are not transmitted on the Internet, but are directly stored on confidential computers at a sending place and a receiving place, the third data is relative relation data and does not belong to confidential data, the third data is transmitted on the Internet, and even if the third data is intercepted in the network transmission process, an acquirer cannot calculate correct confidential coordinates. Meanwhile, the confidential topographic map of the acquisition point is translated and rotated on a working site, so that the confidential topographic map does not have confidential coordinate information, namely the confidential topographic map becomes a non-confidential topographic map and does not belong to confidential data, the confidential topographic map is transmitted on the Internet, and even if the confidential topographic map is intercepted in the network transmission process, correct confidential topographic map data cannot be acquired through calculation due to the fact that the translation distance and the rotation angle cannot be known.
The sending secrecy machine and the receiving secrecy machine belong to secrecy computers, need to be physically isolated from the Internet, cannot use wireless equipment, non-secret hard disks or U disks, and can only use the secret hard disks or secret U disks for data transmission.
The sending intermediate machine and the receiving intermediate machine belong to confidential computers, need to be physically isolated from the Internet, cannot use wireless equipment, need to install antivirus software of the latest version, can use a confidential hard disk or a USB flash disk to transmit data to a non-confidential hard disk or the USB flash disk, and cannot store confidential data.
The sending non-secret machine and the receiving non-secret machine belong to non-secret computers, can be connected with the Internet, can use wireless equipment, can use a non-secret hard disk or a U disk to transfer data, cannot use a secret hard disk or a U disk to transfer data, and cannot store secret data.
The sending secret U disk and the receiving secret U disk belong to secret mobile storage equipment, are used for storing secret data and cannot be connected with a non-secret computer to transfer data.
The sending non-secret U disk and the receiving non-secret U disk belong to non-secret storage equipment, can be used for storing non-secret data, cannot be connected with a secret computer and cannot store secret data.
Embodiment 3, a method of using a secure topographic map transmission system, comprising:
step S1, compiling a control point file, namely second data;
step S2, the control point file is brought to the construction site;
step S3, the control point file is taken to other office places needing to receive the confidential topographic map;
s4, collecting coordinates of 4 collection points in the confidential topographic map on a construction site, and compiling a collection point file, namely first data;
step S5, storing the second data and the first data into the sending secrecy machine;
step S6, calculating a relation data file in the sending security machine, namely third data;
step S7, in the sending security machine, the security topographic map is translated for a certain distance at will and rotated for a certain angle at will to form translated topographic map data which are recorded as fourth data, and the translation distance is more than 100 meters;
step S8, the third data and the fourth data are accessed to the sending intermediate machine through the sending secret U disk;
step S9, the sending secret U disk and the sending non-secret U disk are sterilized on the sending intermediate machine, and the third data and the fourth data are transmitted to the sending non-secret U disk;
step S10, the third data and the fourth data are transmitted to the sending non-secret machine through the sending non-secret U disk;
step S11, the sending non-secret machine sends the third data and the fourth data to the Internet;
step S12, the receiving non-secret machine receives the third data and the fourth data from the internet, and the third data and the fourth data are transmitted to the receiving intermediate machine through the receiving non-secret U disk;
step S13, the receiving secret U disk and the receiving non-secret U disk are sterilized on the receiving intermediate machine, and the third data and the fourth data are transmitted to the receiving secret U disk;
step S14, storing the second data into the receiving security machine;
step S15, the third data and the fourth data are transmitted to the receiving secrecy machine through the receiving secrecy USB flash disk;
step S16, calculating the third data and the second data in the receiving security machine, and restoring the coordinates of the acquisition points on the security topographic map acquired on site, namely the first data;
step 17, in the receiving security machine, drawing the first data into the topographic map to obtain the correct position of the acquisition point in the topographic map;
step S18, the translated topographic map is reversely translated by using the correct position of the acquisition point in the receiving security machine;
step S19, reversely rotating the terrain map after reverse translation in the receiving security machine to obtain the original security terrain map;
and step S20, performing precision inspection on the terrain map subjected to the reverse translation and the reverse rotation in the receiving security machine, and if the terrain map is qualified, proving that the transmission of the security terrain map is successful, and finally obtaining the original security terrain map.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. A method for secure topographic map transmission, comprising:
step 1, storing acquisition point coordinate data formed by 4 map root control points or 4 picture frame corner points or 4 ground object corner point coordinate values in confidential topographic map data surveyed on a pipeline construction site and a surveying and mapping control point result table of a coordinate system same as that of the confidential topographic map in a sending security machine, respectively marking the acquisition points as first data and second data, and respectively marking the 4 acquisition points as No. 1 acquisition points to No. 4 acquisition points;
step 2, in the sending security machine, translating the surveyed security topographic map at any distance and rotating at any angle to form translated topographic map data, and marking the translated topographic map data as fourth data, wherein the translation distance is more than 100 meters;
step 3, the sending secrecy machine calculates the first data and the second data into non-secrecy data with a relative relation, records the non-secrecy data as third data, and transmits the third data and the fourth data to a sending intermediate machine through a sending secrecy U disk;
step 4, the sending intermediate machine receives third data and fourth data transmitted by the sending secret U disk and transmits the third data and the fourth data to a sending non-secret U disk;
step 5, the sending non-secret machine receives third data and fourth data transmitted by the sending non-secret USB flash disk, and sends the third data and the fourth data to the Internet;
step 6, the receiving non-secret machine receives the third data and the fourth data from the internet, and transmits the third data and the fourth data to the receiving intermediate machine through the receiving non-secret U disk;
step 7, the receiving intermediate machine receives the third data and the fourth data transmitted by the receiving non-secret U disk, and transmits the third data and the fourth data to the receiving secret machine through the receiving secret U disk;
step 8, the receiving security machine receives third data and fourth data transmitted by the receiving security U disk, calculates the third data and a mapping control point result table stored in the receiving security machine in advance, namely second data, and removes a relative relation to obtain first data, and acquires acquisition point coordinate data on a mapped security topographic map;
step 9, drawing correct acquisition point positions in drawing software by using the acquisition point coordinate data in the receiving security machine, namely obtaining correct coordinates of 4 acquisition points;
step 10, importing the fourth data into the receiving security machine, and performing reverse translation on the translated topographic map by using one correct acquisition point location as a base point, and translating the topographic map back to a correct position;
step 11, reversely rotating the topographic map translated back to the correct position by using another correct acquisition point position in the receiving security machine to obtain an original security topographic map;
and 12, performing precision inspection on the finally obtained topographic map by using the rest two correct acquisition point points in the receiving security machine, and finally obtaining the original secure topographic map after the transmission of the secure topographic map is proved to be successful if the topographic map is qualified through inspection.
2. A transmission method of a confidential map according to claim 1, wherein in the step 3, in calculating the relative relationship between the first data and the second data, the method of: and taking any point in the mapping control point result table as a calculated reference point (X, Y), and calculating a coordinate increment between an acquisition point coordinate (X, Y) and the reference point (X, Y) on the mapped confidential topographic map as third data, wherein X is an acquisition point longitudinal coordinate value, Y is an acquisition point horizontal coordinate value, X is a reference point longitudinal coordinate value, and Y is a reference point horizontal coordinate value.
3. A method of transmitting a confidential topographic map according to claim 2, wherein the method of calculating the coordinate increment between the acquisition point and the reference point comprises:
the ordinate increment Δ X ═ X-X;
the abscissa increment Δ Y is Y-Y;
in the formula, X is an acquisition point longitudinal coordinate value, Y is an acquisition point horizontal coordinate value, X is a datum point longitudinal coordinate value, and Y is a datum point horizontal coordinate value.
4. A transmission method of a confidential map according to claim 3, wherein in step 8, the relative relationship between the second data and the third data is released, and the first data is calculated by:
acquiring point ordinate values X which are acquired on the topographic map are X-delta X;
acquiring point abscissa values Y which are acquired on the topographic map are Y-delta Y;
wherein X is the longitudinal coordinate value of the datum point, Y is the transverse coordinate value of the datum point, Delta X is the longitudinal coordinate increment, and Delta Y is the transverse coordinate increment.
5. A transmission method of confidential maps according to claim 1, wherein in step 1, the 4 collection points selected from the confidential maps are the center of a circle of a root point, the center of a circle of a circular important feature, the intersection point of a drawing frame and the corner point of the important feature, and the collected confidential maps are not labeled with coordinates.
6. A method for transmitting a confidential map according to claim 1, wherein in step 10, translation is performed with reference to acquisition point No. 1 as a base point: inputting a translation command, selecting a translation topographic map, capturing and selecting No. 1 acquisition points in the translation topographic map as translation base points, taking the translation base points as the base points to translate the whole topographic map, and translating the base points to the correct No. 1 acquisition point positions drawn in the step 9;
in step 11, the topographic map is reversely rotated by the No. 2 acquisition point: selecting a rotated topographic map, inputting a rotation command, capturing and selecting a correct acquisition point No. 1 as a rotation base point, capturing and selecting a correct acquisition point No. 1 as a rotation reference angle base point, capturing and selecting an acquisition point No. 2 on the topographic map as a second point of a reference angle, capturing and selecting a correct acquisition point No. 2 as a new point of the reference angle, and rotating the acquisition point No. 2 and the whole topographic map by a rotation angle relative to the correct acquisition point No. 1;
in step 12, in the topographic map which is finished rotating, the coordinate values of the No. 3 acquisition point and the No. 4 acquisition point are respectively compared with the correct coordinate of the No. 3 acquisition point and the correct coordinate of the No. 4 acquisition point in the step 9, the calculation is poor, if the poor is less than 0.5mm, the test is qualified, the transmission of the confidential topographic map is successful, if the poor is more than 0.5mm, the rotating angle value is recalculated, the decimal number of the angle value is increased, the angle precision is improved, and the topographic map is rotated again until the success is achieved.
7. A method for transmitting a confidential topographic map according to claim 6, wherein the capturing selection method is replaced with a method of directly inputting the correct coordinate value of the acquisition point No. 1 acquired in the step 9 to complete the translation.
8. A method of transmitting a confidential topographic map according to claim 6, wherein the specific method of the reverse rotation in the step 11 is replaced by:
first, the rotation angle a is calculated:
A＝A2-A1；
A2＝arctan((y2-Y1)/(x2-X1))+AC2；
A1＝arctan((Y2-Y1)/(X2-X1))+AC1；
in the formula, x2Is a longitudinal coordinate value after the translation of No. 2 acquisition point, namely a false longitudinal coordinate value y of No. 2 acquisition point2Is the horizontal coordinate value of No. 2 collection point after translation, namely the false horizontal coordinate value of No. 2 collection point, X1 is the vertical coordinate value of No. 1 collection point, namely the true vertical coordinate value of No. 1 collection point, Y1 is the horizontal coordinate value of No. 1 collection point, namely the true horizontal coordinate value of No. 1 collection point, X2 is the vertical coordinate value of No. 2 collection point, namely the true vertical coordinate value of No. 2 collection point, Y2 is the horizontal coordinate value of No. 2 collection point, namely the true horizontal coordinate value of No. 2 collection point, A1 is the true coordinate value of No. 2 collection pointThe azimuth angle of the value relative to the true coordinate value of the No. 1 acquisition point, A2 is the azimuth angle of the false coordinate value of the No. 2 acquisition point relative to the true coordinate value of the No. 1 acquisition point;
both AC2 and AC1 are azimuth correction parameters, determined by the azimuth quadrant:
when Y-Y1 > 0 and X-X1 > 0, AC2 is 0;
when X-X1 < 0, AC2 ═ 180;
when Y-Y1 < 0 and X-X1 > 0, AC2 is 360;
when Y2-Y1 > 0 and X2-X1 > 0, AC1 is 0;
when X2-X1 < 0, AC1 is 180;
when Y2-Y1 < 0 and X2-X1 > 0, AC1 is 360;
after the rotation angle A is calculated, a topographic map to be rotated is selected, a rotation command is input, the No. 1 acquisition point is captured and selected as a reference point, and the rotation angle A is input to complete rotation.
9. A secure topographic map transmission system comprising:
the sending confidential machine is used for storing acquisition point coordinate data formed by 4 map root control points or 4 picture frame corner points or 4 ground object corner point coordinate values in confidential topographic map data of field surveying, a surveying and mapping control point result table in the same coordinate system as the confidential topographic map and the surveyed confidential topographic map, translating at any distance and rotating at any angle to form translated topographic map data, respectively recording the translated topographic map data as first data, second data and fourth data, calculating the first data and the second data into non-confidential data with a relative relationship, recording the non-confidential data as third data, and transmitting the third confidential data and the fourth data to a sending intermediate machine through a sending U disk;
the sending intermediate machine is used for receiving third data and fourth data transmitted by the sending secret U disk and transmitting the third data and the fourth data to a sending non-secret U disk;
the sending non-secret machine is used for receiving third data and fourth data transmitted by the sending non-secret USB flash disk and sending the third data and the fourth data to the Internet;
the receiving non-secret machine is used for receiving the third data and the fourth data from the Internet and transmitting the third data and the fourth data to the receiving intermediate machine through the receiving non-secret U disk;
the receiving intermediate machine is used for receiving the third data and the fourth data transmitted by the receiving non-secret USB flash disk and transmitting the third data and the fourth data to the receiving secret machine through the receiving secret USB flash disk;
and the receiving security machine is used for storing a mapping control point result table, namely second data, receiving third data and fourth data transmitted by the receiving security USB flash disk, calculating the third data and the second data together to remove the relative relationship to obtain first data, acquiring coordinates of acquisition points on a security topographic map mapped on site, performing reverse translation and reverse rotation on the translated topographic map by using correct coordinates of the acquisition points to obtain an original security topographic map, and performing precision inspection on the recovered security topographic map.
10. A method of using a secure topographic map transmission system, comprising:
step S1, compiling a control point file, namely second data;
step S2, the control point file is brought to the construction site;
step S3, the control point file is taken to other office places needing to receive the confidential topographic map;
s4, collecting coordinates of 4 collection points in the confidential topographic map on a construction site, and compiling a collection point file, namely first data;
step S5, storing the second data and the first data in a sending secure machine;
step S6, calculating a relation data file in the sending security machine, namely third data;
step S7, in the sending crypto, translating the confidential topographic map at any distance and rotating at any angle to form translated topographic map data, and recording the translated topographic map data as fourth data, wherein the translation distance is more than 100 meters;
step S8, the third data and the fourth data are accessed to a sending intermediate machine through a sending secret U disk;
step S9, the sending secret U disk and the sending non-secret U disk are sterilized on the sending intermediate machine, and the third data and the fourth data are transmitted to the sending non-secret U disk;
step S10, the third data and the fourth data are transmitted to a sending non-secret machine through the sending non-secret U disk;
step S11, the sending non-secret machine sends the third data and the fourth data to the Internet;
step S12, the receiving non-secret machine receives the third data and the fourth data from the Internet, and the third data and the fourth data are transmitted to the receiving intermediate machine through the receiving non-secret U disk;
step S13, the receiving intermediate machine kills virus to the receiving secret U disk and the receiving non-secret U disk, and transmits the third data and the fourth data to the receiving secret U disk;
step S14, storing the second data in the receiving secure machine;
step S15, transferring the third data and the fourth data to the receiving security machine through the receiving security usb disk;
step S16, calculating the third data and the second data in the receiving security machine, and restoring the coordinates of the acquisition points on the security topographic map acquired on site, namely the first data;
step 17, in the receiving security machine, drawing the first data into a topographic map to obtain the correct position of an acquisition point in the topographic map;
step S18, the translated topographic map is reversely translated in the receiving security machine by using the correct position of the acquisition point;
step S19, reversely rotating the terrain map after reverse translation in the receiving security machine to obtain an original security terrain map;
and step S20, performing precision inspection on the terrain map subjected to the reverse translation and the reverse rotation in the receiving security machine, and if the terrain map is qualified, proving that the transmission of the security terrain map is successful, and finally obtaining the original security terrain map.
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| CN106330868A (en) * | 2016-08-14 | 2017-01-11 | 北京数盾信息科技有限公司 | Encrypted storage key management system and method of high-speed network |
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| CN102750413A (en) * | 2012-06-19 | 2012-10-24 | 江苏省电力设计院 | Data processing and mapping method of topographic surveying of electric transmission line tower positions |
| CN103700063A (en) * | 2013-08-30 | 2014-04-02 | 南宁市勘察测绘地理信息院 | Integrated topographic map quick forming method based on high-definition satellite image |
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