CN112085625A - Evidence collection method and device based on block chain evidence storage, computer equipment and storage medium - Google Patents
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Abstract
The embodiment of the application belongs to the technical field of information, and relates to an evidence collection method and device based on block chain evidence storage, computer equipment and a storage medium, wherein the method comprises the following steps: receiving an evidence collection request sent by a request terminal; responding to the evidence collection request, and starting the spherical camera equipment to collect image data of the target scene; constructing a target virtual scene corresponding to the target scene based on the image data, and broadcasting the target virtual scene to a block chain network; receiving evidence file data which is sent by a user terminal of any node of a block chain network and corresponds to a target virtual scene; and constructing target evidence data corresponding to the target virtual scene based on the evidence file data, and broadcasting the target evidence data to the block chain network. The party can upload the evidence information corresponding to the target scene through the user terminal at any time and any place, and the uploaded evidence can be stored by the blockchain network, so that the uploaded evidence is difficult to tamper, can be approved by an authority, and has legal effectiveness.
Description
Technical Field
The present application relates to the field of information technology, and in particular, to an evidence collection method and apparatus, a computer device, and a storage medium based on block chain evidence storage.
Background
With the rapid development of economy and the comprehensive implementation of the construction of the Chinese law enforcement, the standard law enforcement, the civilized law enforcement and the official law enforcement of law enforcement personnel become the basic requirements of the police service system, and how to effectively supervise the civilized law enforcement, the standard law enforcement and the official law enforcement of law enforcement personnel and effectively manage evidences existing or generated in the law enforcement process of the law enforcement personnel become an important subject of the police service system.
At present, in the evidence collection and evidence collection process, no special mode exists, and the mode can not meet the current evidence collection requirement according to the current subjectivity of law enforcement officers.
Disclosure of Invention
An object of the embodiment of the application is to provide an evidence collection method and apparatus, a computer device and a storage medium based on evidence storage of a block chain, which aim to solve the problem that the evidence collection and evidence collection process does not have a special mode, and the mode cannot meet the current evidence collection requirement according to the current subjectivity of law enforcement officers.
In order to solve the above technical problem, an embodiment of the present application provides an evidence collection method based on block chain evidence storage, which adopts the following technical scheme:
receiving an evidence collection request sent by a request terminal;
responding to the evidence collection request, and starting the spherical camera equipment to collect image data of a target scene;
constructing a target virtual scene corresponding to the target scene based on the image data, and broadcasting the target virtual scene to a blockchain network;
receiving evidence file data which is sent by a user terminal of any node of the block chain network and corresponds to the target virtual scene;
and constructing target evidence data corresponding to the target virtual scene based on the evidence file data, and broadcasting the target evidence data to the block chain network.
In order to solve the above technical problem, an embodiment of the present application further provides an evidence collecting device based on block chain evidence storage, which adopts the following technical scheme:
the request receiving module is used for receiving an evidence collection request sent by a request terminal;
the request response module is used for responding to the evidence collection request and starting the spherical camera equipment to collect the image data of the target scene;
the target scene construction module is used for constructing a target virtual scene corresponding to the target scene based on the image data and broadcasting the target virtual scene to a block chain network;
an evidence file receiving module, configured to receive evidence file data corresponding to the target virtual scene, sent by a user terminal at any node of the blockchain network;
and the target evidence building module is used for building target evidence data corresponding to the target virtual scene based on the evidence file data and broadcasting the target evidence data to the block chain network.
In order to solve the above technical problem, an embodiment of the present application further provides a computer device, which adopts the following technical solutions:
comprising a memory and a processor, said computer readable storage medium having stored thereon a computer program which, when executed by the processor, carries out the steps of the block chain evidence based evidence collection method as described above.
In order to solve the above technical problem, an embodiment of the present application further provides a computer-readable storage medium, which adopts the following technical solutions:
the computer-readable storage medium has stored thereon a computer program which, when executed by a processor, performs the steps of the evidence collection method based on blockchain evidence as described above.
Compared with the prior art, the embodiment of the application mainly has the following beneficial effects:
the application provides an evidence collection method based on block chain evidence storage, which comprises the following steps: receiving an evidence collection request sent by a request terminal; responding to the evidence collection request, and starting the spherical camera equipment to collect image data of a target scene; constructing a target virtual scene corresponding to the target scene based on the image data, and broadcasting the target virtual scene to a blockchain network; receiving evidence file data which is sent by a user terminal of any node of the block chain network and corresponds to the target virtual scene; and constructing target evidence data corresponding to the target virtual scene based on the evidence file data, and broadcasting the target evidence data to the block chain network. By the method and the system, the party can upload the evidence corresponding to the target scene through the user terminal at any time and any place without relying on an authority (such as a court and a notarization department), and the uploaded evidence can be stored in the blockchain network, so that the uploaded evidence is difficult to tamper, can be approved by the authority, and has certain legal effectiveness.
Drawings
In order to more clearly illustrate the solution of the present application, the drawings needed for describing the embodiments of the present application will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present application, and that other drawings can be obtained by those skilled in the art without inventive effort.
Fig. 1 is a flowchart of an implementation of an evidence collection method based on block chain evidence storage according to an embodiment of the present application;
FIG. 2 is a flowchart of an implementation of step S103 in FIG. 1;
FIG. 3 is a flowchart of an implementation of step S105 in FIG. 1;
fig. 4 is a schematic structural diagram of an evidence collection device based on block chain evidence storage according to a second embodiment of the present application;
FIG. 5 is a schematic diagram of the structure of the object scene building block of FIG. 4;
FIG. 6 is a block diagram of the target evidence construction module of FIG. 4;
FIG. 7 is a schematic block diagram of one embodiment of a computer device according to the present application.
Detailed Description
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs; the terminology used in the description of the application herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the application; the terms "including" and "having," and any variations thereof, in the description and claims of this application and the description of the above figures are intended to cover non-exclusive inclusions. The terms "first," "second," and the like in the description and claims of this application or in the above-described drawings are used for distinguishing between different objects and not for describing a particular order.
Reference herein to "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment can be included in at least one embodiment of the application. The appearances of the phrase in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments. It is explicitly and implicitly understood by one skilled in the art that the embodiments described herein can be combined with other embodiments.
In order to make the technical solutions better understood by those skilled in the art, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings.
Example one
Referring to fig. 1, a flowchart of an implementation of an evidence collection method based on block chain evidence storage according to an embodiment of the present application is shown, and for convenience of description, only a portion related to the present application is shown.
In step S101, an evidence collection request transmitted by a requesting terminal is received.
In the embodiment of the present application, the requesting terminal may be a mobile terminal such as a mobile phone, a smart phone, a notebook computer, a digital broadcast receiver, a PDA (personal digital assistant), a PAD (tablet computer), a PMP (portable multimedia player), a navigation device, etc., and a fixed terminal such as a digital TV, a desktop computer, etc., it should be understood that the examples of the requesting terminal are only for convenience of understanding and are not intended to limit the present invention.
In step S102, in response to the evidence collection request, the spherical imaging device is started to capture image data of the target scene.
In the embodiment of the present application, the spherical imaging apparatus refers to an imaging device that can capture an image in 360 degrees in all directions.
In the embodiment of the present application, the target scene refers to a forensic field where a record needs to be saved.
In the embodiment of the application, the spherical camera equipment is installed at different angles of a target scene, and scene image data of the target scene is acquired at a time, so that the image data can be acquired.
In step S103, a target virtual scene corresponding to the target scene is constructed based on the image data, and the target virtual scene is broadcast to a blockchain network.
In the embodiment of the application, because the image data acquired by the spherical camera devices at different angles are different in height and distance, after the image data is acquired, the image data needs to be spliced, the vertical and horizontal position adjustment and the zoom-out adjustment are performed based on the same reference object, and finally panoramic image data similar to the target scene is synthesized, namely the target virtual scene.
In the embodiment of the application, after the target virtual scene is obtained, the target virtual scene is broadcasted to a blockchain network, so that each node in the blockchain network issues the target virtual scene to a blockchain based on a consensus mechanism. Therefore, the target virtual scene is verified by the block chain, and is difficult to be tampered.
In step S104, evidence file data corresponding to the target virtual scene sent by the user terminal of any node of the blockchain network is received.
In the embodiment of the present application, the user terminal may specifically be a mobile phone, a computer, or other devices. It should be noted that the user terminal generally has a data processing function, a communication function, and a multimedia information collecting function. The user terminal has a multimedia information acquisition function, wherein the user terminal is provided with elements such as a camera, a recorder and the like.
In the embodiment of the application, when the user needs to send the evidence information, an evidence collection instruction can be input to the user terminal so as to trigger the user terminal to collect the evidence.
In step S105, target evidence data corresponding to the target virtual scene is constructed based on the evidence file data, and the target evidence data is broadcast to the blockchain network.
In the embodiment of the application, after the evidence file data sent by the user terminal is obtained, the corresponding relation with the target virtual scene is constructed, and the evidence file data is broadcasted to the block chain network, so that the evidence file data is certified by the block chain and is difficult to be tampered.
In an embodiment of the present application, a method for collecting evidence based on block chain evidence storage is provided, including: receiving an evidence collection request sent by a request terminal; responding to the evidence collection request, and starting the spherical camera equipment to collect image data of a target scene; constructing a target virtual scene corresponding to the target scene based on the image data, and broadcasting the target virtual scene to a blockchain network; receiving evidence file data which is sent by a user terminal of any node of the block chain network and corresponds to the target virtual scene; and constructing target evidence data corresponding to the target virtual scene based on the evidence file data, and broadcasting the target evidence data to the block chain network. By the method and the system, the party can upload the evidence corresponding to the target scene through the user terminal at any time and any place without relying on an authority (such as a court and a notarization department), and the uploaded evidence can be stored in the blockchain network, so that the uploaded evidence is difficult to tamper, can be approved by the authority, and has certain legal effectiveness.
In some optional implementation manners of the first embodiment of the present application, the spherical image capturing apparatus is composed of at least 3 optical lens groups, the optical lens groups are uniformly distributed inside the spherical image capturing apparatus, and the focusing directions of the optical lens groups all point to the center of the sphere of the spherical image capturing apparatus.
In some optional implementations of the first embodiment of the present application, a connection line of central points of the lenses of the plurality of optical lens groups forms a largest equilateral shape or equilateral shape in the sphere.
In the embodiment of the application, the sphere camera device integrates n +1(n > ═ 2) optical lens groups which are uniformly embedded on the surface of the sphere device; all optical lens groups of the spherical camera device are ensured to share a shooting shutter control sensor, so that all the optical lens groups can shoot and collect optical signals at the same time; meanwhile, the manufacturing process of each group of optical lenses is uniform, so that the parameters such as refractive indexes of all the optical lenses are consistent, and the optical deviation rate of all the optical lenses is reduced to the minimum, so that the focus of each optical lens is concentrated at the spherical center of the spherical equipment.
In the embodiment of the application, the manufacturing process of each group of optical lenses is uniform, so that parameters such as refractive indexes of all the optical lenses are consistent, and the optical deviation ratios of all the optical lenses are reduced to the minimum, so as to ensure that the focal point of each optical lens is concentrated at the spherical center of the spherical equipment, namely the focal distance of the optical lens is approximately equal to the radius length of the spherical equipment.
Continuing to refer to fig. 2, a flowchart for implementing step S103 in fig. 1 is shown, and for convenience of illustration, only the portions relevant to the present application are shown.
In some optional implementation manners of the first embodiment of the present application, the step S103 specifically includes: step S201 and step S202.
In step S201, the image data is stored, and a scene hash corresponding to the image data is determined based on a hash algorithm.
In step S202, the target virtual scene is constructed based on the scene hash.
In the embodiment of the present application, an implementation manner of constructing a target virtual scene corresponding to the target scene based on the image data may be to store the image data, and specifically, the image data may be stored in a local database or a cloud database; the implementation of constructing the target virtual scene corresponding to the target scene based on the image data may also be that a hash algorithm is used to determine a scene hash corresponding to the image data according to the image data.
In the embodiment of the application, the scene hash is actually a segment of character string, the occupied storage space is small, the scene hash is stored in the block chain, and the requirement on the storage capacity of the nodes in the block chain network is not high. Moreover, whether the image data is modified or not can be detected through scene hash, so that the scene hash is stored in the block chain, which is equivalent to multi-party evidence storage of the image data.
In some optional implementation manners of the first embodiment of the present application, the step S201 specifically includes: and calculating the scene hash corresponding to the image data by adopting a hash algorithm by taking the image data and the storage position information of the image data as the input of the hash algorithm.
In some optional implementation manners of the first embodiment of the present application, the evidence file data specifically includes: any one of an audio file, a video file, a text file, and an image file.
In practical applications, for example, the user terminal may directly record the voice information of the user into an audio file. For another example, the user terminal may collect voice information of the user first, and then convert the voice information into a text file.
Continuing to refer to fig. 3, a flowchart of an implementation of step S105 in fig. 1 is shown, and for convenience of illustration, only the portions relevant to the present application are shown.
In some optional implementation manners of the first embodiment of the present application, the step S105 specifically includes: step S301 and step S302.
In step S301, the evidence file data is stored, and an evidence hash corresponding to the evidence file data is determined based on a hash algorithm.
In step S302, the target evidence data is constructed based on the evidence hash.
In the embodiment of the application, the target evidence data corresponding to the target virtual scene is constructed based on the evidence file data in a manner of storing the evidence file data, specifically, storing the evidence file data in a local database or storing the evidence file data in a cloud database; the implementation manner of constructing the target evidence data corresponding to the target virtual scene based on the evidence file data may also be to determine an evidence hash corresponding to the evidence file data by using a hash algorithm according to the evidence file data.
In the embodiment of the application, the evidence hash is actually a segment of character string, the occupied storage space is small, the evidence hash is stored in the block chain, and the requirement on the storage capacity of the nodes in the block chain network is not high. Moreover, whether the image data is modified or not can be detected through evidence hashing, and therefore the evidence hashing is stored in the block chain, which is equivalent to multi-party evidence storage of the image data.
In some optional implementation manners of the first embodiment of the present application, the step S301 specifically includes: and calculating the evidence hash by adopting a hash algorithm by taking the evidence file data, the storage position information of the evidence file data, the user signature information, the timestamp and the last block hash value as the input of the hash algorithm.
In summary, the present application provides an evidence collection method based on block chain evidence preservation, including: receiving an evidence collection request sent by a request terminal; responding to the evidence collection request, and starting the spherical camera equipment to collect image data of a target scene; constructing a target virtual scene corresponding to the target scene based on the image data, and broadcasting the target virtual scene to a blockchain network; receiving evidence file data which is sent by a user terminal of any node of the block chain network and corresponds to the target virtual scene; and constructing target evidence data corresponding to the target virtual scene based on the evidence file data, and broadcasting the target evidence data to the block chain network. By the method and the system, the party can upload the evidence corresponding to the target scene through the user terminal at any time and any place without relying on an authority (such as a court and a notarization department), and the uploaded evidence can be stored in the blockchain network, so that the uploaded evidence is difficult to tamper, can be approved by the authority, and has certain legal effectiveness.
It will be understood by those skilled in the art that all or part of the processes of the methods of the embodiments described above can be implemented by a computer program, which can be stored in a computer-readable storage medium, and can include the processes of the embodiments of the methods described above when the computer program is executed. The storage medium may be a non-volatile storage medium such as a magnetic disk, an optical disk, a Read-Only Memory (ROM), or a Random Access Memory (RAM).
It should be understood that, although the steps in the flowcharts of the figures are shown in order as indicated by the arrows, the steps are not necessarily performed in order as indicated by the arrows. The steps are not performed in the exact order shown and may be performed in other orders unless explicitly stated herein. Moreover, at least a portion of the steps in the flow chart of the figure may include multiple sub-steps or multiple stages, which are not necessarily performed at the same time, but may be performed at different times, which are not necessarily performed in sequence, but may be performed alternately or alternately with other steps or at least a portion of the sub-steps or stages of other steps.
Example two
With further reference to fig. 4, as an implementation of the method shown in fig. 1, the present application provides an embodiment of an evidence collection apparatus based on block chain evidence storage, where the embodiment of the apparatus corresponds to the embodiment of the method shown in fig. 1, and the apparatus may be applied to various electronic devices.
As shown in fig. 4, an evidence collecting apparatus 100 based on block chain evidence provided in the second embodiment of the present application includes: a request receiving module 110, a request response module 120, a target scene construction module 130, an evidence file receiving module 140, and a target evidence construction module 150. Wherein:
a request receiving module 110, configured to receive an evidence collection request sent by a requesting terminal;
a request response module 120, configured to respond to the evidence collection request and start a spherical camera device to collect image data of a target scene;
a target scene construction module 130, configured to construct a target virtual scene corresponding to the target scene based on the image data, and broadcast the target virtual scene to a blockchain network;
an evidence file receiving module 140, configured to receive evidence file data corresponding to the target virtual scene and sent by a user terminal at any node of the blockchain network;
a target evidence constructing module 150, configured to construct target evidence data corresponding to the target virtual scene based on the evidence file data, and broadcast the target evidence data to the blockchain network.
In the embodiment of the present application, the requesting terminal may be a mobile terminal such as a mobile phone, a smart phone, a notebook computer, a digital broadcast receiver, a PDA (personal digital assistant), a PAD (tablet computer), a PMP (portable multimedia player), a navigation device, etc., and a fixed terminal such as a digital TV, a desktop computer, etc., it should be understood that the examples of the requesting terminal are only for convenience of understanding and are not intended to limit the present invention.
In the embodiment of the present application, the spherical imaging apparatus refers to an imaging device that can capture an image in 360 degrees in all directions.
In the embodiment of the present application, the target scene refers to a forensic field where a record needs to be saved.
In the embodiment of the application, the spherical camera equipment is installed at different angles of a target scene, and scene image data of the target scene is acquired at a time, so that the image data can be acquired.
In the embodiment of the application, because the image data acquired by the spherical camera devices at different angles are different in height and distance, after the image data is acquired, the image data needs to be spliced, the vertical and horizontal position adjustment and the zoom-out adjustment are performed based on the same reference object, and finally panoramic image data similar to the target scene is synthesized, namely the target virtual scene.
In the embodiment of the application, after the target virtual scene is obtained, the target virtual scene is broadcasted to a blockchain network, so that each node in the blockchain network issues the target virtual scene to a blockchain based on a consensus mechanism. Therefore, the target virtual scene is verified by the block chain, and is difficult to be tampered.
In the embodiment of the present application, the user terminal may specifically be a mobile phone, a computer, or other devices. It should be noted that the user terminal generally has a data processing function, a communication function, and a multimedia information collecting function. The user terminal has a multimedia information acquisition function, wherein the user terminal is provided with elements such as a camera, a recorder and the like.
In the embodiment of the application, when the user needs to send the evidence information, an evidence collection instruction can be input to the user terminal so as to trigger the user terminal to collect the evidence.
In the embodiment of the application, after the evidence file data sent by the user terminal is obtained, the corresponding relation with the target virtual scene is constructed, and the evidence file data is broadcasted to the block chain network, so that the evidence file data is certified by the block chain and is difficult to be tampered.
In an embodiment of the present application, an evidence collecting device based on block chain evidence storage is provided, including: the request receiving module is used for receiving an evidence collection request sent by a request terminal; the request response module is used for responding to the evidence collection request and starting the spherical camera equipment to collect the image data of the target scene; the target scene construction module is used for constructing a target virtual scene corresponding to the target scene based on the image data and broadcasting the target virtual scene to a block chain network; an evidence file receiving module, configured to receive evidence file data corresponding to the target virtual scene, sent by a user terminal at any node of the blockchain network; and the target evidence building module is used for building target evidence data corresponding to the target virtual scene based on the evidence file data and broadcasting the target evidence data to the block chain network. By the method and the system, the party can upload the evidence corresponding to the target scene through the user terminal at any time and any place without relying on an authority (such as a court and a notarization department), and the uploaded evidence can be stored in the blockchain network, so that the uploaded evidence is difficult to tamper, can be approved by the authority, and has certain legal effectiveness.
In some optional implementation manners of the second embodiment of the present application, the spherical image capturing apparatus is composed of at least 3 optical lens groups, the optical lens groups are uniformly distributed inside the spherical image capturing apparatus, and the focusing directions of the optical lens groups all point to the center of the sphere of the spherical image capturing apparatus.
In some optional implementations of the second embodiment of the present application, the central points of the lenses of the plurality of optical lens groups are connected to form a maximum equilateral shape or equilateral shape in the sphere.
In the embodiment of the application, the sphere camera device integrates n +1(n > ═ 2) optical lens groups which are uniformly embedded on the surface of the sphere device; all optical lens groups of the spherical camera device are ensured to share a shooting shutter control sensor, so that all the optical lens groups can shoot and collect optical signals at the same time; meanwhile, the manufacturing process of each group of optical lenses is uniform, so that the parameters such as refractive indexes of all the optical lenses are consistent, and the optical deviation rate of all the optical lenses is reduced to the minimum, so that the focus of each optical lens is concentrated at the spherical center of the spherical equipment.
In the embodiment of the application, the manufacturing process of each group of optical lenses is uniform, so that parameters such as refractive indexes of all the optical lenses are consistent, and the optical deviation ratios of all the optical lenses are reduced to the minimum, so as to ensure that the focal point of each optical lens is concentrated at the spherical center of the spherical equipment, namely the focal distance of the optical lens is approximately equal to the radius length of the spherical equipment.
Continuing to refer to fig. 5, a schematic diagram of the structure of the object scene constructing module 130 in fig. 4 is shown, and for convenience of illustration, only the parts relevant to the present application are shown.
In some optional implementations of the second embodiment of the present application, the target scene constructing module 130 includes: an image data storage sub-module 131 and an object scene construction sub-module 132. Wherein:
an image data storage sub-module 131, configured to store the image data and determine a scene hash corresponding to the image data based on a hash algorithm;
and the target scene constructing sub-module 132 is configured to construct the target virtual scene based on the scene hash.
In the embodiment of the present application, an implementation manner of constructing a target virtual scene corresponding to the target scene based on the image data may be to store the image data, and specifically, the image data may be stored in a local database or a cloud database; the implementation of constructing the target virtual scene corresponding to the target scene based on the image data may also be that a hash algorithm is used to determine a scene hash corresponding to the image data according to the image data.
In the embodiment of the application, the scene hash is actually a segment of character string, the occupied storage space is small, the scene hash is stored in the block chain, and the requirement on the storage capacity of the nodes in the block chain network is not high. Moreover, whether the image data is modified or not can be detected through scene hash, so that the scene hash is stored in the block chain, which is equivalent to multi-party evidence storage of the image data.
In some optional implementations of the second embodiment of the present application, the image data storage sub-module 131 further includes: an image data storage unit. Wherein:
and the image data storage unit is used for taking the image data and the storage position information of the image data as the input of a hash algorithm and calculating the scene hash corresponding to the image data by adopting the hash algorithm.
In some optional implementation manners of the second embodiment of the present application, the evidence file data specifically includes: any one of an audio file, a video file, a text file, and an image file.
In practical applications, for example, the user terminal may directly record the voice information of the user into an audio file. For another example, the user terminal may collect voice information of the user first, and then convert the voice information into a text file.
Continuing to refer to FIG. 6, a schematic diagram of the structure of the target evidence construction module 150 of FIG. 4 is shown, for ease of illustration, only the portions relevant to the present application are shown.
In some optional implementations of the second embodiment of the present application, the target evidence building module 150 includes: a target evidence storage sub-module 151 and a target evidence construction sub-module 152. Wherein:
a target evidence storage submodule 151 configured to store the evidence file data and determine an evidence hash corresponding to the evidence file data based on a hash algorithm;
a target evidence construction sub-module 152 for constructing the target evidence data based on the evidence hash.
In the embodiment of the application, the target evidence data corresponding to the target virtual scene is constructed based on the evidence file data in a manner of storing the evidence file data, specifically, storing the evidence file data in a local database or storing the evidence file data in a cloud database; the implementation manner of constructing the target evidence data corresponding to the target virtual scene based on the evidence file data may also be to determine an evidence hash corresponding to the evidence file data by using a hash algorithm according to the evidence file data.
In the embodiment of the application, the evidence hash is actually a segment of character string, the occupied storage space is small, the evidence hash is stored in the block chain, and the requirement on the storage capacity of the nodes in the block chain network is not high. Moreover, whether the image data is modified or not can be detected through evidence hashing, and therefore the evidence hashing is stored in the block chain, which is equivalent to multi-party evidence storage of the image data.
In some optional implementations of the second embodiment of the present application, the target evidence storing sub-module 151 includes: and a target evidence storage unit. Wherein:
and the target evidence storage unit is used for taking the evidence file data, the storage position information of the evidence file data, the user signature information, the timestamp and the last block hash value as the input of a hash algorithm and calculating by adopting the hash algorithm to obtain the evidence hash.
In order to solve the technical problem, an embodiment of the present application further provides a computer device. Referring to fig. 7, fig. 7 is a block diagram of a basic structure of a computer device according to the present embodiment.
The computer device 200 includes a memory 210, a processor 220, and a network interface 230 communicatively coupled to each other via a system bus. It is noted that only computer device 200 having components 210 and 230 is shown, but it is understood that not all of the illustrated components are required and that more or fewer components may alternatively be implemented. As will be understood by those skilled in the art, the computer device is a device capable of automatically performing numerical calculation and/or information processing according to a preset or stored instruction, and the hardware includes, but is not limited to, a microprocessor, an Application Specific Integrated Circuit (ASIC), a Programmable Gate Array (FPGA), a Digital Signal Processor (DSP), an embedded device, and the like.
The computer device can be a desktop computer, a notebook, a palm computer, a cloud server and other computing devices. The computer equipment can carry out man-machine interaction with a user through a keyboard, a mouse, a remote controller, a touch panel or voice control equipment and the like.
The memory 210 includes at least one type of readable storage medium including a flash memory, a hard disk, a multimedia card, a card type memory (e.g., SD or DX memory, etc.), a Random Access Memory (RAM), a Static Random Access Memory (SRAM), a Read Only Memory (ROM), an Electrically Erasable Programmable Read Only Memory (EEPROM), a Programmable Read Only Memory (PROM), a magnetic memory, a magnetic disk, an optical disk, etc. In some embodiments, the storage 210 may be an internal storage unit of the computer device 200, such as a hard disk or a memory of the computer device 200. In other embodiments, the memory 210 may also be an external storage device of the computer device 200, such as a plug-in hard disk, a Smart Media Card (SMC), a Secure Digital (SD) Card, a Flash memory Card (Flash Card), or the like, provided on the computer device 200. Of course, the memory 210 may also include both internal and external storage devices of the computer device 200. In this embodiment, the memory 210 is generally used for storing an operating system and various types of application software installed on the computer device 200, such as program codes of an evidence collection method based on block chain evidence. In addition, the memory 210 may also be used to temporarily store various types of data that have been output or are to be output.
The processor 220 may be a Central Processing Unit (CPU), controller, microcontroller, microprocessor, or other data Processing chip in some embodiments. The processor 220 is generally operative to control overall operation of the computer device 200. In this embodiment, the processor 220 is configured to execute the program code stored in the memory 210 or process data, for example, execute the program code of the evidence collection method based on block chain evidence.
The network interface 230 may include a wireless network interface or a wired network interface, and the network interface 230 is generally used to establish a communication connection between the computer device 200 and other electronic devices.
The present application further provides another embodiment, which is to provide a computer-readable storage medium storing a block chain evidence-based evidence collection program, where the block chain evidence-based evidence collection program is executable by at least one processor to cause the at least one processor to perform the steps of the block chain evidence-based evidence collection method as described above.
Through the above description of the embodiments, those skilled in the art will clearly understand that the method of the above embodiments can be implemented by software plus a necessary general hardware platform, and certainly can also be implemented by hardware, but in many cases, the former is a better implementation manner. Based on such understanding, the technical solutions of the present application may be embodied in the form of a software product, which is stored in a storage medium (such as ROM/RAM, magnetic disk, optical disk) and includes instructions for enabling a terminal device (such as a mobile phone, a computer, a server, an air conditioner, or a network device) to execute the method according to the embodiments of the present application.
It is to be understood that the above-described embodiments are merely illustrative of some, but not restrictive, of the broad invention, and that the appended drawings illustrate preferred embodiments of the invention and do not limit the scope of the invention. This application is capable of embodiments in many different forms and is provided for the purpose of enabling a thorough understanding of the disclosure of the application. Although the present application has been described in detail with reference to the foregoing embodiments, it will be apparent to one skilled in the art that the present application may be practiced without modification or with equivalents of some of the features described in the foregoing embodiments. All equivalent structures made by using the contents of the specification and the drawings of the present application are directly or indirectly applied to other related technical fields and are within the protection scope of the present application.
Claims (10)
1. An evidence collection method based on block chain evidence storage, which is characterized by comprising the following steps:
receiving an evidence collection request sent by a request terminal;
responding to the evidence collection request, and starting the spherical camera equipment to collect image data of a target scene;
constructing a target virtual scene corresponding to the target scene based on the image data, and broadcasting the target virtual scene to a blockchain network;
receiving evidence file data which is sent by a user terminal of any node of the block chain network and corresponds to the target virtual scene;
and constructing target evidence data corresponding to the target virtual scene based on the evidence file data, and broadcasting the target evidence data to the block chain network.
2. The evidence collection method based on block chain evidence according to claim 1, wherein the step of constructing a target virtual scene corresponding to the target scene based on the image data specifically comprises the following steps:
storing the image data, and determining scene hash corresponding to the image data based on a hash algorithm;
and constructing the target virtual scene based on the scene hash.
3. The evidence collection method based on blockchain evidence according to claim 2, wherein the step of storing the image data and determining the scene hash corresponding to the image data based on a hash algorithm specifically comprises the following steps:
and calculating the scene hash corresponding to the image data by adopting a hash algorithm by taking the image data and the storage position information of the image data as the input of the hash algorithm.
4. The evidence collection method based on block chain evidence according to claim 1, wherein the evidence file data specifically comprises: any one of an audio file, a video file, a text file, and an image file.
5. The evidence collection method based on block chain evidence, according to claim 1, wherein the step of constructing target evidence data corresponding to the target virtual scene based on the evidence file data specifically includes the steps of:
storing the evidence file data, and determining evidence hash corresponding to the evidence file data based on a hash algorithm;
and constructing the target evidence data based on the evidence hash.
6. The evidence collection method based on block chain storage evidence according to claim 5, wherein the evidence file data further comprises user signature information and a timestamp, and the step of storing the evidence file data and determining the evidence hash corresponding to the evidence file data based on a hash algorithm specifically comprises the following steps:
and calculating the evidence hash by adopting a hash algorithm by taking the evidence file data, the storage position information of the evidence file data, the user signature information, the timestamp and the last block hash value as the input of the hash algorithm.
7. An evidence collection apparatus based on block chain evidence, the apparatus comprising:
the request receiving module is used for receiving an evidence collection request sent by a request terminal;
the request response module is used for responding to the evidence collection request and starting the spherical camera equipment to collect the image data of the target scene;
the target scene construction module is used for constructing a target virtual scene corresponding to the target scene based on the image data and broadcasting the target virtual scene to a block chain network;
an evidence file receiving module, configured to receive evidence file data corresponding to the target virtual scene, sent by a user terminal at any node of the blockchain network;
and the target evidence building module is used for building target evidence data corresponding to the target virtual scene based on the evidence file data and broadcasting the target evidence data to the block chain network.
8. The evidence collection device based on block chain evidence according to claim 7, wherein the target scene construction module comprises:
the image data storage submodule is used for storing the image data and determining scene hash corresponding to the image data based on a hash algorithm;
and the target scene constructing submodule is used for constructing the target virtual scene based on the scene hash.
9. A computer device comprising a memory having stored therein a computer program and a processor which when executed implements the steps of the blockchain evidence based evidence collection method of claim 1 to 6.
10. A computer-readable storage medium, having stored thereon a computer program which, when being executed by a processor, carries out the steps of the method for evidence collection based on blockchain evidence according to any one of claims 1 to 6.
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