CN111583393A - Three-dimensional modeling product management method and system based on block chain technology - Google Patents
Three-dimensional modeling product management method and system based on block chain technology Download PDFInfo
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- CN111583393A CN111583393A CN202010375632.1A CN202010375632A CN111583393A CN 111583393 A CN111583393 A CN 111583393A CN 202010375632 A CN202010375632 A CN 202010375632A CN 111583393 A CN111583393 A CN 111583393A
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- G—PHYSICS
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- G06F21/00—Security arrangements for protecting computers, components thereof, programs or data against unauthorised activity
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- G06F21/62—Protecting access to data via a platform, e.g. using keys or access control rules
- G06F21/6209—Protecting access to data via a platform, e.g. using keys or access control rules to a single file or object, e.g. in a secure envelope, encrypted and accessed using a key, or with access control rules appended to the object itself
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- G06F2221/21—Indexing scheme relating to G06F21/00 and subgroups addressing additional information or applications relating to security arrangements for protecting computers, components thereof, programs or data against unauthorised activity
- G06F2221/2107—File encryption
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Abstract
The invention belongs to the field of block chains, and particularly relates to a three-dimensional modeling product management method and a three-dimensional modeling product management system based on a block chain technology. By associating the model information with the original owner's information, uploaded into the blockchain, ownership of the model is effectively defined. Meanwhile, the registration of the use record is acquired through the block chain, so that the reasonable use record of the model is standardized. By synchronously uploading the model information, the model can be conveniently and rapidly searched, and convenience is provided for the repeated use of the model.
Description
Technical Field
The invention relates to the technical field of block chains, in particular to a three-dimensional modeling product management method and system based on a block chain technology.
Background
Three-dimensional modeling as a model source of a virtual reality technology requires multiple steps of data acquisition, design, manufacturing and the like. The existing management mode of a three-dimensional modeling product is to perform encryption operation on a model obtained by adopting conventional modeling software, and comprises a mode of encrypting a file and limiting an application range, but the encryption is easy to crack, the use after cracking is not controlled, the cracked read data can be randomly used, and the development cost of modeling workers is lost. Meanwhile, for a large model, due to poor data interoperability, repeated modeling operation of the model is caused, and the utilization efficiency cannot be improved.
Therefore, an effective three-dimensional model management method and system are urgently needed.
Disclosure of Invention
Based on this, the invention aims to provide a three-dimensional modeling product management method and system based on a block chain technology.
Specifically, the invention provides the following technical scheme:
a three-dimensional modeling product management system based on a block chain technology is characterized by comprising: the system comprises a registration module, a model information registration module, an information encryption module, a use recording module, an information synchronization module and an inquiry module;
the registration module is used for performing block chain node registration according to the original owner information of the three-dimensional model;
the model information registration module is used for carrying out standard arrangement and registration on the attribute description information of the model;
the information encryption module is used for encrypting the original owner information of the model and the model file;
the usage recording module is used for recording the usage of the model;
the information synchronization module is used for synchronizing the information into the block chain through the registration node;
and the query module is used for querying the relevant information of the model.
The original owner information utilized by the registration module comprises at least one of user ID, modeler identity information and contact information; the registration module can also be used to register users who have a need for the model.
The model information registration module records attribute information of the model, including modeling time, modeling object description, modeling thumbnail, model file size, model file format and model fineness.
The information encryption module encrypts the information of the original owner and the model file by using the master key, and generates a use key by combining the use information according to the user requirement, wherein the attribute information of the model file is not encrypted.
The generation process of the master key for encrypting the model file by the information encryption module is specifically that the master key of the current model is generated according to the user ID and the file information, the use key is generated according to the user use requirement of the user according to the model user node and the use information, and the user information, the master key and the use key information are recorded in a password table; the file information comprises file creation time, creation equipment ID and software information used for creation, and the use information comprises use time, use equipment ID and use software information.
A three-dimensional modeling product management method based on a block chain technology is characterized by comprising the following steps: the system comprises a registration module, a model information registration module, an information encryption module, a use recording module, an information synchronization module and an inquiry module;
performing block chain node registration according to the original owner information of the three-dimensional model through a registration module;
the attribute description information of the model is subjected to standard arrangement and registration through a model information registration module;
encrypting the original owner information of the model and the model file through an information encryption module;
recording the use of the model by using a recording module;
synchronizing the information to a block chain through a registration node by an information synchronization module;
and inquiring the relevant information of the model through an inquiring module.
The original owner information utilized by the registration module when node registration is carried out comprises at least one of user ID, modeler identity information and contact information.
The model information registration module records attribute information of the model, including modeling time, modeling object description, modeling thumbnail, model file size, model file format and model fineness.
The information encryption module encrypts the information of the original owner and the master key of the model file, and decrypts the information by using the master key, wherein the attribute information of the model file is not encrypted.
The information encryption module specifically generates an encrypted master key of the model file according to the user ID and the file information, generates a use key according to the user use requirement and the model user node ID and the use information, and records the user information, the master key and the use key information in a password table; the file information comprises file creation time, creation equipment ID and software information used for creation, and the use information comprises use time, use equipment ID and use software information.
The use recording module is used for recording the use information of each model; when a user in need establishes connection with a model owner node and finishes model file transmission, the model file needs to be decrypted by using a key in the using process, the used key is a dynamic key, and the generated used key is different according to different use information.
The block chain is a three-dimensional model transaction chain, and the nodes have functions of storing user information, storing model information and transmitting information.
The technical scheme has the beneficial effects that:
1. by dynamically and asymmetrically encrypting the three-dimensional model file based on the block chain and registering the use record, the illegal acquisition and use of the model are effectively controlled.
2. By synchronizing the model information in the block chain, the searching efficiency of the model is improved, and the model can be reused conveniently.
Drawings
FIG. 1 is a flow chart 1 of the present invention;
FIG. 2 is a block link point schematic of the present invention;
fig. 3 is a schematic diagram of the encryption process of the present invention.
Detailed Description
In order to make the present invention more comprehensible to those skilled in the art, the present invention is further described in the following with reference to examples and the accompanying drawings.
In the actual use process, the model information is associated with the information of the original owner and uploaded into the block chain, so that the ownership of the model is effectively limited. Meanwhile, the registration of the use record is acquired through the block chain, so that the reasonable use record of the model is standardized. By synchronously uploading the model information, the model can be conveniently and rapidly searched, and convenience is provided for the repeated use of the model.
Example one
A three-dimensional modeling product management system based on block chain technology, as shown in fig. 1, comprising: the system comprises a registration module, a model information registration module, an information encryption module, a use recording module, an information synchronization module and an inquiry module;
the registration module is used for performing block chain node registration according to the original owner information of the three-dimensional model;
the model information registration module is used for carrying out standard arrangement and registration on the attribute description information of the model;
the information encryption module is used for encrypting the original owner information of the model and the model file;
the usage recording module is used for recording the usage of the model;
the information synchronization module is used for synchronizing the information into the block chain through the registration node;
and the query module is used for querying the relevant information of the model.
The original owner information utilized by the registration module includes at least one of a user ID, modeler identity information, and a contact address.
Further, the registration module can be used for registering users with model requirements.
Further, the node registered on the blockchain as shown in fig. 2 includes user information, model information, and a transmission module, where the specific user information mainly includes a user ID for node identification and encryption of the model file, and the user type is mainly used for allocating user permissions, for example, distinguishing between two types of model owners and model demanders.
The model information as shown in fig. 2 includes description of the characteristics of the model itself including modeling time, modeling object description, modeling thumbnail and model fineness, and description of the model file information including model file size and model file format.
As shown in fig. 2, the transmission module includes a function of encrypting, transmitting and recording a file for a model, and specifically, information to be synchronized is synchronized to other nodes in a block chain through the function in a node, for example, all model information in a current node, where a model file itself is stored locally, introduction information of the model is synchronized to other nodes, model introduction information in the same other nodes is synchronized to the current node, and query and comparison of the model can be performed through the node, so as to facilitate searching for the required model information, and after determining a requirement for the model, for a large model file, after establishing a point-to-point transmission channel, point-to-point transmission of the encrypted model file is performed, so as to improve transmission speed.
The information encryption module encrypts the information of the original owner and the model file in an asymmetric encryption mode and generates a use key, wherein the attribute information of the model file is not encrypted.
The information encryption module specifically generates a master key of a current model according to a user ID and file information in the encryption process of the model file, generates a use key according to a model user node ID and use information, and records the user information, the master key and the use key information in a password table; the file information comprises file creation time, creation equipment ID and software information used for creation, and the use information comprises use time, use equipment ID and use software information.
The use recording module is used for recording the use information of each model, and the specific format is used for recording the identity information and the use time of a user;
furthermore, the model file needs to be decrypted by using a key in the using process, wherein the key is a dynamic key, and the key is different according to different user IDs.
Specifically, as the encryption process in fig. 3, a User1 at a node N owns a model file, information is distributed via a blockchain node, current model information is synchronized to other nodes, and the model file is encrypted in the synchronization process for facilitating later transaction use, specifically, a master key KM-1 is generated according to the ID of the current User and the model file information, and a used key KU-1 is generated according to a required User after other nodes initiate and confirm the model file, wherein the generation process of the used key needs to be associated with the master key and the information of the required User node, the three pieces of information (User Userl, master key KM-1, and used key KU-1) form a record of a cipher table, and the record is synchronized in each node of the blockchain in an encryption synchronization manner, when a user needs to use the three-dimensional model file, decryption operation needs to be carried out, table lookup decryption operation needs to be carried out in each node in the block chain, and if decryption is successful only after decryption verification operation of more than half of the nodes, the file can be used smoothly, and malicious cracking behaviors are prevented. When the user who needs the same model file of the same user changes, the key is used for relatively changing, the synchronous password table of each node changes, and the user needs to decrypt again after using the synchronous password table again.
The block chain is a three-dimensional model transaction chain, and the nodes have functions of storing user information, model information and information transmission.
Specifically, a preferred embodiment is that a certain design company uses the technical scheme to protect a three-dimensional model and can acquire the existing three-dimensional model more quickly and improve the utilization efficiency, and uses the company name to complete the registration of the node of the block chain, and registers the information of the currently manufactured three-dimensional model, including the information of modeling time, modeling object description, modeling thumbnail, model file size, model file format, model fineness, etc., and then encrypts the model file by an asymmetric encryption mode to obtain an encrypted model file, after copying the model file, the file cannot be used without a key, and after once decryption, the encryption key in the model file is automatically changed, when re-opening, the key needs to be re-acquired, and other nodes in the same time block chain can acquire the related attribute information of the model, if use is required, the company may be contacted or a record of use may be left in the blockchain after approval, such as company A and company B obtaining model 1 on a certain day of the month and year. While the above information is synchronized to other nodes in the blockchain. Meanwhile, the company can also acquire information of other models through the registered block link points.
Example two
A three-dimensional modeling product management method based on block chain technology is characterized in that;
performing block chain node registration according to the original owner information of the three-dimensional model through a registration module;
the attribute description information of the model is subjected to standard arrangement and registration through a model information registration module;
encrypting the original owner information of the model and the model file through an information encryption module;
recording the use of the model by using a recording module;
synchronizing the information to a block chain through a registration node by an information synchronization module;
and inquiring the relevant information of the model through an inquiring module.
The original owner information utilized by the registration module comprises at least one of user ID, modeler identity information and contact information;
further, the registration module can be used for registering users with model requirements.
Further, the node registered on the blockchain as shown in fig. 2 of the specification includes user information, model information, and a transmission module, where the specific user information mainly includes a user ID and a user type, the user ID is used for node identification and model file encryption, and the user type is mainly used for user right assignment, for example, distinguishing between two types of a model owner and a model demander.
The model information as shown in fig. 2 includes description of the features of the model itself including modeling time, modeling object description, modeling thumbnail and model fineness, and description of the model file including model file size and model file format.
As shown in fig. 2, the transmission module includes a function of encrypting, transmitting and recording a file for a model, and specifically, information to be synchronized is synchronized to other nodes in a block chain through the function in a node, for example, all model information in a current node, where a model file itself is stored locally, introduction information of the model is synchronized to other nodes, model introduction information in the same other nodes is synchronized to the current node, and query and comparison of the model can be performed through the node, so as to facilitate searching for the required model information, and after determining a requirement for the model, for a large model file, after establishing a point-to-point transmission channel, point-to-point transmission of the encrypted model file is performed, so as to improve transmission speed.
The information encryption module encrypts the information of the original owner and the model file in an asymmetric encryption mode and generates a use key, wherein the attribute information of the model file is not encrypted.
The information encryption module specifically generates an encrypted master key of the model file according to the user ID and the file information, generates a use key according to the user use requirement and the model user node ID and the use information, and records the user information, the master key and the use key information in a password table;
the file information comprises file creation time, creation equipment ID and software information used for creation, and the use information comprises use time, use equipment ID and use software information module.
The use recording module is used for recording the use information of each model; when a user in need establishes connection with a model owner node and finishes model file transmission, the model file needs to be decrypted by using a key in the using process, the used key is a dynamic key, and the generated used key is different according to different use information.
Specifically, as the encryption process in fig. 3, a User1 at a node N owns a model file, information is distributed through a blockchain node, current model information is synchronized to other nodes, and the model file is encrypted in the synchronization process for facilitating later transaction use, specifically, a master key KM-1 is generated according to the ID of the current User and the model file information, and after other nodes initiate demands on the model file and confirm the demands, a used key KU-1 is generated according to the demanded User, wherein the generation process of the used key needs to be associated with the master key and the information of the demanded User node, the three pieces of information (User 1, master key KM-1, and used key KU-1) form a record of a cipher table, and the record is synchronized in each node of the blockchain in an encryption synchronization manner, when a user needs to use the three-dimensional model file, decryption operation is needed, all nodes have the function of password verification, table lookup and decryption operation needs to be carried out on each node in the block chain before use, and if decryption is successful only after decryption verification operation of more than half of the nodes, the file can be used smoothly, and malicious cracking behaviors are prevented. When the user who needs the same model file of the same user changes, the key is used for relatively changing, the synchronous password table of each node changes, and the user needs to decrypt again after using the synchronous password table again.
The block chain is a three-dimensional model transaction chain, wherein the nodes have user information attributes, model information attributes and an information transmission function.
Specifically, in a preferred embodiment, a design company uses the technical scheme to protect a three-dimensional model and can obtain the existing three-dimensional model more quickly and improve the utilization efficiency, and uses the company name to complete registration of a block chain node, and registers information of the currently manufactured three-dimensional model, including information of modeling time, modeling object description, modeling thumbnail, model file size, model file format, model fineness, and the like, and then encrypts the model file by an asymmetric encryption method to obtain an encrypted model file, after copying the model file, the file cannot be used without a key, and after once decryption, the encryption key in the model file is automatically changed, specifically, according to the use time, the used device ID, and the used software of a user are different, the encryption key is changed, the key is required to be obtained again when the key is opened, meanwhile, other nodes in the blockchain can obtain related attribute information of the model, if the model is required to be used, the model can be contacted with the company, or a use record is left in the blockchain after permission, for example, the model 1 is obtained by the company A and the company B in a certain month and a certain day of a certain year, meanwhile, the information is synchronized to other nodes in the blockchain, and meanwhile, the company can also obtain information of other models through the registered blockchain nodes.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents and improvements made within the spirit and principle of the present invention are intended to be included therein.
Claims (10)
1. A three-dimensional modeling product management system based on a block chain technology is characterized by comprising: the system comprises a registration module, a model information registration module, an information encryption module, a use recording module, an information synchronization module and an inquiry module;
the registration module is used for performing block chain node registration according to the original owner information of the three-dimensional model;
the model information registration module is used for carrying out standard arrangement and registration on the attribute description information of the model;
the information encryption module is used for encrypting the original owner information of the model and the model file;
the usage recording module is used for recording the usage of the model;
the information synchronization module is used for synchronizing the information into the block chain through the registration node;
and the query module is used for querying the relevant information of the model.
2. The system of claim 1, wherein: the original owner information utilized by the registration module comprises at least one of user ID, modeler identity information and contact information; the registration module is also used for registering users with model requirements.
3. The system of claim 1, wherein: the model information registration module records attribute information of the model, including modeling time, modeling object description, modeling thumbnail, model file size, model file format and model fineness.
4. The system of claim 1, wherein: the information encryption module encrypts the information of the original owner and the model file by using the master key, and generates a use key by combining the use information according to the user requirement, wherein the attribute information of the model file is not encrypted.
5. The system of claim 4, wherein: the generation process of the master key for encrypting the model file by the information encryption module is specifically that the master key of the current model is generated according to the user ID and the file information, the use key is generated according to the user use requirement and the use information of the model user node ID, and the user information, the master key and the use key information are recorded in a password table;
the file information comprises file creation time, creation equipment ID and software information used for creation, and the use information comprises use time, use equipment ID and use software information.
6. A three-dimensional modeling product management method based on block chain technology is characterized in that,
performing block chain node registration according to the original owner information of the three-dimensional model through a registration module;
the attribute description information of the model is subjected to standard arrangement and registration through a model information registration module;
encrypting the original owner information of the model and the model file through an information encryption module;
recording the use information of the model by using a recording module;
synchronizing the information to a block chain through a registration node by an information synchronization module;
and inquiring the relevant information of the model through an inquiring module.
7. The method of claim 6, wherein: the original owner information utilized by the registration module when node registration is carried out comprises at least one of user ID, modeler identity information and contact information.
8. The method of claim 6, wherein: the information encryption module encrypts the information of the original owner and the master key of the model file, and decrypts the information by using the master key, wherein the attribute information of the model file is not encrypted.
9. The method of claim 8, wherein: the information encryption module specifically generates an encrypted master key of the model file according to the user ID and the file information, generates a use key according to the user use requirement and the model user node ID and the use information, and records the user information, the master key and the use key information in a password table;
the file information comprises file creation time, creation equipment ID and software information used for creation, and the use information comprises use time, use equipment ID and use software information.
10. The method of claim 9, wherein: the use recording module is used for recording the use information of each model;
when a user in need establishes connection with a model owner node and finishes model file transmission, the model file needs to be decrypted by using a key in the using process, the used key is a dynamic key, and the generated used key is different according to different use information.
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