CN114691669A - Electronic certificate storage method and device, electronic equipment and storage medium - Google Patents

Electronic certificate storage method and device, electronic equipment and storage medium Download PDF

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CN114691669A
CN114691669A CN202011598645.1A CN202011598645A CN114691669A CN 114691669 A CN114691669 A CN 114691669A CN 202011598645 A CN202011598645 A CN 202011598645A CN 114691669 A CN114691669 A CN 114691669A
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evidence
storing
electronic evidence
digital fingerprint
electronic
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王倩雯
张盼
张雪辉
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Aisino Corp
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Aisino Corp
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    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F16/00—Information retrieval; Database structures therefor; File system structures therefor
    • G06F16/20—Information retrieval; Database structures therefor; File system structures therefor of structured data, e.g. relational data
    • G06F16/22—Indexing; Data structures therefor; Storage structures
    • G06F16/2228—Indexing structures
    • G06F16/2255—Hash tables
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F16/00—Information retrieval; Database structures therefor; File system structures therefor
    • G06F16/20—Information retrieval; Database structures therefor; File system structures therefor of structured data, e.g. relational data
    • G06F16/24—Querying
    • G06F16/245—Query processing
    • G06F16/2458—Special types of queries, e.g. statistical queries, fuzzy queries or distributed queries
    • G06F16/2471—Distributed queries
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F16/00—Information retrieval; Database structures therefor; File system structures therefor
    • G06F16/20—Information retrieval; Database structures therefor; File system structures therefor of structured data, e.g. relational data
    • G06F16/27—Replication, distribution or synchronisation of data between databases or within a distributed database system; Distributed database system architectures therefor
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F21/00—Security arrangements for protecting computers, components thereof, programs or data against unauthorised activity
    • G06F21/60—Protecting data
    • G06F21/602—Providing cryptographic facilities or services
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F21/00—Security arrangements for protecting computers, components thereof, programs or data against unauthorised activity
    • G06F21/60—Protecting data
    • G06F21/64—Protecting data integrity, e.g. using checksums, certificates or signatures
    • G06F21/645—Protecting data integrity, e.g. using checksums, certificates or signatures using a third party

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  • Computer Security & Cryptography (AREA)
  • Computer Hardware Design (AREA)
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  • General Health & Medical Sciences (AREA)
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  • Probability & Statistics with Applications (AREA)
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Abstract

The invention discloses an electronic evidence storing method, an electronic evidence storing device, electronic equipment and a storage medium, which are used for solving the problems that the existing electronic evidence storing mode is not favorable for a user to manage electronic evidence and the risk of the electronic evidence being leaked is higher, the electronic evidence storing method is applied to a block chain evidence storing platform, the block chain evidence storing platform comprises a block chain network, wherein: any node of the block chain network receives an evidence storing request, wherein the evidence storing request carries original data of electronic evidence to be stored; performing hash operation on the electronic evidence original data to be stored to generate a digital fingerprint of the electronic evidence to be stored; performing hash operation on the digital fingerprint and the current timestamp to obtain a hash value corresponding to the digital fingerprint of the electronic evidence to be stored; and storing the hash value corresponding to the digital fingerprint of the electronic evidence to be stored to the current block of the node.

Description

Electronic certificate storage method and device, electronic equipment and storage medium
Technical Field
The present invention relates to the field of block chain technologies, and in particular, to an electronic certificate storage method and apparatus, an electronic device, and a storage medium.
Background
The electronic evidence has great application potential in the fields of finance, commerce, logistics, medical treatment, copyright, public welfare, justice, arbitration, notarization and the like, and becomes an indispensable important part in an evidence system. Traditional evidence is fixed and mainly depends on a notarization department, but the notarization department is difficult to meet the requirement of electronic data evidence storage in multiple aspects such as time response, application scenes and cost, so that a large number of third-party evidence storage mechanisms are provided, the evidence obtaining and storing work is not finished by notarization personnel any more, but is finished by a party, the third-party evidence storage mechanisms develop evidence obtaining applications in certain specific scenes, and the party can fix the evidence of electronic and network information data by using the evidence obtaining applications. However, since different forensics applications are required to be used for storing the electronic evidence in different scenes, the management of the electronic evidence by the user is not facilitated, and the risk of the electronic evidence being leaked is high.
Disclosure of Invention
In order to solve the problems that the existing electronic evidence storage mode is not favorable for a user to manage the electronic evidence and the risk of the electronic evidence being leaked is high, the embodiment of the invention provides an electronic evidence storage method, an electronic evidence storage device, electronic equipment and a storage medium.
In a first aspect, an embodiment of the present invention provides an electronic certificate storing method, which is applied to a block chain certificate storing platform, where the block chain certificate storing platform includes a block chain network, where:
any node of the block chain network receives an evidence storing request, wherein the evidence storing request carries original data of electronic evidence to be stored;
performing hash operation on the electronic evidence original data to be stored to generate a digital fingerprint of the electronic evidence to be stored;
performing hash operation on the digital fingerprint and the current timestamp to obtain a hash value corresponding to the digital fingerprint of the electronic evidence to be stored;
and storing the hash value corresponding to the digital fingerprint of the electronic evidence to be stored to the current block of the node.
Preferably, the evidence storing request also carries evidence storing user identification information and the electronic evidence identification information to be stored;
after the hash value corresponding to the digital fingerprint of the electronic evidence to be stored is stored in the current block of the node, the method further includes:
and storing the corresponding relation between the user identification information, the electronic evidence identification information and the position information of the block of the hash value corresponding to the digital fingerprint storing the electronic evidence.
Optionally, the method further comprises:
receiving a forensics request, wherein the forensics request carries identification information of electronic evidences to be extracted and identification information of forensics users;
according to the stored user identification information, the electronic evidence identification information and the corresponding relation of the position information of the block of the hash value corresponding to the digital fingerprint storing the electronic evidence, the position information of the block of the hash value corresponding to the digital fingerprint storing the electronic evidence corresponding to the evidence storing user identification information and the electronic evidence identification information to be extracted is obtained;
and acquiring the hash value corresponding to the digital fingerprint of the electronic evidence to be extracted according to the position information of the block storing the hash value corresponding to the digital fingerprint of the electronic evidence to be extracted, and returning the hash value corresponding to the digital fingerprint of the electronic evidence to the sending end of the evidence obtaining request.
Optionally, the method further comprises:
receiving a verification request sent by a sending end of an evidence storing user, wherein the verification request carries electronic evidence identification information to be verified and evidence storing user identification information;
according to the corresponding relation between the stored user identification information, the electronic evidence identification information and the position information of the block storing the hash value corresponding to the digital fingerprint of the electronic evidence, the position information of the block storing the hash value corresponding to the digital fingerprint of the electronic evidence to be verified, corresponding to the evidence storage user identification information and the electronic evidence identification information to be verified, is obtained;
according to the position information of the block storing the hash value corresponding to the digital fingerprint of the electronic evidence to be verified, acquiring the hash value corresponding to the digital fingerprint of the electronic evidence to be verified, calculating a hash algorithm and a timestamp used when the hash value corresponding to the digital fingerprint of the electronic evidence to be verified is calculated, returning the hash value corresponding to the digital fingerprint of the electronic evidence to be verified, the hash algorithm and the timestamp to the sending end of the evidence storing user, so that the sending end of the evidence storing user performs hash operation on the locally stored original data of the electronic evidence to be verified according to the hash algorithm to generate a first digital fingerprint of the original data of the electronic evidence to be verified, and performs hash operation on the first digital fingerprint and the timestamp to obtain a hash value corresponding to the first digital fingerprint of the electronic evidence to be verified, a hash value corresponding to the hash value, a hash value corresponding to the first digital fingerprint of the electronic evidence to be verified, and a timestamp, Comparing the first hash value with a hash value corresponding to the received digital fingerprint of the electronic evidence to be verified to obtain a verification result;
and receiving the verification result information sent by the sending end of the credentialing user.
Optionally, after receiving the verification result information sent by the sending end of the credentialing user, the method further includes:
when the verification result is determined to be that the first hash value is consistent with the stored hash value corresponding to the digital fingerprint of the electronic evidence to be verified, generating an evidence storing report, and sending the evidence storing report to a third-party authentication platform for endorsement, wherein the evidence storing report comprises the evidence storing user identification information, the verification result, the evidence storing user inquiry record information and the third-party authentication platform information;
and when receiving the certificate showing request sent by the sending end of the certificate storing user, returning the certificate storing report to the sending end of the certificate storing user.
In a second aspect, an embodiment of the present invention provides an electronic certificate storing device, which is applied to a block chain certificate storing platform, where the block chain certificate storing platform includes a block chain network, where:
the first receiving unit is used for receiving an evidence storing request, wherein the evidence storing request carries original data of the electronic evidence to be stored;
the first generation unit is used for carrying out Hash operation on the electronic evidence original data to be stored to generate a digital fingerprint of the electronic evidence to be stored;
the obtaining unit is used for carrying out hash operation on the digital fingerprint and the current timestamp to obtain a hash value corresponding to the digital fingerprint of the electronic evidence to be stored;
and the storage unit is used for storing the hash value corresponding to the digital fingerprint of the electronic evidence to be stored to the current block of the current node of the block chain network.
Preferably, the evidence storing request also carries evidence storing user identification information and the electronic evidence identification information to be stored;
the storage unit is further configured to store the user identification information, the electronic evidence identification information, and the corresponding relationship between the electronic evidence identification information and the position information of the block storing the hash value corresponding to the digital fingerprint of the electronic evidence after the hash value corresponding to the digital fingerprint of the electronic evidence to be stored is stored in the current block of the node.
Optionally, the apparatus further comprises:
the second receiving unit is used for receiving a forensics request, and the forensics request carries identification information of electronic evidence to be extracted and identification information of a forensics user;
a first obtaining unit, configured to obtain the evidence storing user identification information and the location information of the block storing the hash value corresponding to the digital fingerprint of the electronic evidence, where the hash value corresponding to the digital fingerprint of the electronic evidence is corresponding to the electronic evidence identification information to be extracted, according to the correspondence between the stored user identification information and the location information of the block storing the hash value corresponding to the digital fingerprint of the electronic evidence;
and the first returning unit is used for acquiring the hash value corresponding to the digital fingerprint of the electronic evidence to be extracted according to the position information of the block storing the hash value corresponding to the digital fingerprint of the electronic evidence to be extracted, and returning the hash value corresponding to the digital fingerprint of the electronic evidence to the sending end of the evidence obtaining request.
Optionally, the apparatus further comprises:
a third receiving unit, configured to receive a verification request sent by a sending end of a credentialing user, where the verification request carries electronic evidence identification information to be verified and credentialing user identification information;
a second obtaining unit, configured to obtain, according to a correspondence between the stored user identification information and the stored electronic evidence identification information and location information of a block storing a hash value corresponding to a digital fingerprint of the electronic evidence, location information of a block storing a hash value corresponding to a digital fingerprint of the electronic evidence to be verified, where the stored user identification information and the stored electronic evidence identification information correspond to each other;
a second returning unit, configured to obtain a hash value corresponding to the digital fingerprint of the electronic evidence to be verified according to the location information of the block storing the hash value corresponding to the digital fingerprint of the electronic evidence to be verified, calculate a hash algorithm and a timestamp used when the hash value corresponding to the digital fingerprint of the electronic evidence to be verified is calculated, and return the hash value corresponding to the digital fingerprint of the electronic evidence to be verified, the hash algorithm, and the timestamp to the sending end of the certifying user, so that the sending end of the certifying user performs hash operation on the locally stored original data of the electronic evidence to be verified according to the hash algorithm to generate a first digital fingerprint of the original data of the electronic evidence to be verified, and performs hash operation on the first digital fingerprint and the timestamp to obtain a first hash value corresponding to the first digital fingerprint of the electronic evidence to be verified, Comparing the first hash value with a hash value corresponding to the received digital fingerprint of the electronic evidence to be verified to obtain a verification result;
and the fourth receiving unit is used for receiving the verification result information sent by the sending end of the credentialing user.
Optionally, the apparatus further comprises:
a second generation unit, configured to, after receiving verification result information sent by a sending end of the evidence storing user, generate an evidence storing report when it is determined that the verification result is that the first hash value is consistent with a hash value corresponding to the stored digital fingerprint of the electronic evidence to be verified, and send the evidence storing report to a third-party authentication platform for endorsement, where the evidence storing report includes the evidence storing user identification information, the verification result, the evidence storing user query record information, and the third-party authentication platform information;
and the third returning unit is used for returning the certificate storing report to the sending end of the certificate storing user when receiving the certificate showing request sent by the sending end of the certificate storing user.
In a third aspect, an embodiment of the present invention provides an electronic device, which includes a memory, a processor, and a computer program stored in the memory and executable on the processor, where the processor executes the computer program to implement the electronic certificate storing method according to the present invention.
In a fourth aspect, an embodiment of the present invention provides a computer-readable storage medium, on which a computer program is stored, where the computer program, when executed by a processor, implements the steps in the electronic certificate storing method according to the present invention.
The embodiment of the invention has the following beneficial effects:
the electronic evidence storing method and device provided by the embodiment of the invention are applied to a block chain evidence storing platform, the block chain evidence storing platform comprises a block chain network, when any node of the block chain network receives an evidence storing request carrying electronic evidence original data to be stored, hash operation is carried out on the electronic evidence original data to be stored to generate a digital fingerprint of the electronic evidence to be stored, the digital fingerprint is a hash value obtained by the hash operation on the electronic evidence original data to be stored, further, the hash value corresponding to the digital fingerprint of the electronic evidence to be stored is obtained by the hash operation on the digital fingerprint of the electronic evidence to be stored and a current timestamp, the obtained hash value corresponding to the digital fingerprint of the electronic evidence to be stored is stored in a current block of the node, the electronic evidence storing scheme provided by the embodiment of the invention uses the block evidence storing platform built by the block chain network to store the electronic evidence, hash operation is carried out on electronic evidence original data uploaded by a user for storing evidence to obtain digital fingerprints, Hash operation is carried out on the digital fingerprints and the current time stamps again to obtain corresponding Hash values, the Hash values are stored to the current blocks, namely, the electronic evidence original data are stored in block chains after being encrypted for the second time and the time stamps, the electronic evidence can be used and invisible, the electronic evidence is prevented from being falsified, and the electronic evidence under different application scenes can be stored, so that the management efficiency of the user on the electronic evidence is improved, and meanwhile, the risk that the electronic evidence is leaked is avoided.
Additional features and advantages of the invention will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. The objectives and other advantages of the invention will be realized and attained by the structure particularly pointed out in the written description and claims hereof as well as the appended drawings.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention and not to limit the invention. In the drawings:
fig. 1 is a schematic view of an application scenario of an electronic certificate storage method according to an embodiment of the present invention;
fig. 2 is a schematic flow chart illustrating an implementation of an electronic certificate storing method according to an embodiment of the present invention;
FIG. 3 is a schematic diagram of an exemplary forensic process according to an embodiment of the present invention;
FIG. 4 is a schematic diagram illustrating an implementation flow of verifying an electronic proof according to an embodiment of the present invention;
fig. 5 is a schematic structural diagram of an electronic certificate storage device according to an embodiment of the present invention;
fig. 6 is a schematic structural diagram of an electronic device according to an embodiment of the present invention.
Detailed Description
In order to solve the problems that the existing electronic evidence storage mode is not favorable for a user to manage the electronic evidence and the risk of the electronic evidence being leaked is high, the embodiment of the invention provides an electronic evidence storage method, an electronic evidence storage device, electronic equipment and a storage medium.
The preferred embodiments of the present invention will be described below with reference to the accompanying drawings of the specification, it being understood that the preferred embodiments described herein are merely for illustrating and explaining the present invention, and are not intended to limit the present invention, and that the embodiments and features of the embodiments in the present invention may be combined with each other without conflict.
Fig. 1 is a schematic view of an application scenario of the electronic evidence storing method according to an embodiment of the present invention, that is, a functional architecture diagram of the block chain evidence storing platform according to the present invention. The functional architecture of the block chaining evidence storage platform consists of four layers, namely a basic layer, a core technology layer, a platform service layer and an application service layer. The base layer includes a storage module, a computing module, and a peer-to-peer network module, where the storage module may use an IPFS (internet File System) to complete storage, and the peer-to-peer network module includes a block chain network. The core technology layer includes technologies such as a block chain technology, electronic data storage, electronic identity, intelligent contract execution, trusted timestamp, data encryption and decryption, and provides a function of a block chain basic service for an upper Application scene (i.e., an Application service layer) through an Application Programming Interface (API). The middle is a platform service layer, including: the system comprises services such as evidence storage service, evidence obtaining service, verification service, evidence showing service, evidence authenticity authentication, evidence credibility authentication, associated evidence tracing, identity real name authentication, operation behavior audit and the like, and a platform service layer integrates basic product requirements in related fields and helps an enterprise to quickly build an upper layer block chain evidence storage application scene. The application service layer can provide credible, safe and quick block chain application in application fields of financial electronic contracts, intelligent government electronic evidence storage, safe electronic files, judicial evidence taking and the like for the user. The block chain evidence storage platform comprises a service for supporting upper-layer services for the butt joint service system and self management of the block chain evidence storage platform. The block chain evidence storing platform provides a login interface for a user, a service system used by the user can be docked to the block chain evidence storing platform, when the user logs in the service system docked with the block chain evidence storing platform, the user can log in the block chain evidence storing platform, the user can comprise an evidence storing user, a judicial institution user (such as an evidence obtaining user), a third-party authentication service institution user and the like, the block chain evidence storing platform supports the user to perform evidence storing, evidence obtaining, verification and evidence displaying services, and can provide inquiry and statistical functions for the user, on one hand, the use record of the user on the block chain evidence storing platform can be displayed, and on the other hand, service data support can be provided for an upper-layer service platform. The block chain evidence storing platform provided by the embodiment of the invention realizes the technical fusion of intelligent contracts, biological identification, artificial intelligence and the like by means of a block chain technology, provides electronic evidence storing whole-process automatic service, adopts a double-layer heterogeneous fragmentation consensus algorithm, realizes the transaction performance exceeding 1 ten thousand tps, supports a national secret algorithm, meets the requirement of domestic safety and reliability, adopts PKI (Public Key Infrastructure ) + IBC (Identity-Based Cryptography), realizes user classification and safety classification, realizes invisible data Based on a leading-edge Cryptography, and avoids the out-of-control data flow.
Based on the above application scenarios, exemplary embodiments of the present invention will be described in more detail below with reference to fig. 2 to 4, it should be noted that the above application scenarios are only shown for the convenience of understanding the spirit and principle of the present invention, and the embodiments of the present invention are not limited in any way herein. Rather, embodiments of the present invention may be applied to any scenario where applicable.
As shown in fig. 2, which is a schematic view of an implementation flow of an electronic certificate storing method according to an embodiment of the present invention, the electronic certificate storing method is applied to the above block chain certificate storing platform, where the block chain certificate storing platform includes a block chain network, and the electronic certificate storing method may specifically include the following steps:
s11, any node of the block chain network receives an evidence storing request, and the evidence storing request carries original data of the electronic evidence to be stored.
In specific implementation, any node of a block chain network in a block chain evidence storing platform receives an evidence storing request sent by a sending end of an evidence storing user, and the evidence storing request may include, but is not limited to, to-be-stored electronic evidence original data (i.e., an electronic evidence original file), evidence storing user identification information, and to-be-stored electronic evidence identification information, which are requested to be stored by the evidence storing user.
And S12, performing hash operation on the electronic evidence original data to be stored to generate the digital fingerprint of the electronic evidence to be stored.
In specific implementation, a hash algorithm is used for carrying out hash operation on the to-be-stored electronic evidence raw data, and an obtained hash value is determined as the digital fingerprint of the to-be-stored electronic evidence. The hash algorithm can be selected according to needs, and the embodiment of the invention does not limit the hash algorithm.
And S13, performing hash operation on the digital fingerprint and the current timestamp to obtain a hash value corresponding to the digital fingerprint of the electronic evidence to be stored.
In specific implementation, the digital fingerprint of the electronic evidence to be stored and the current timestamp are subjected to hash operation again, that is: and performing hash operation on the hash value obtained by performing hash operation on the original data of the electronic evidence to be stored and the current timestamp, and determining the obtained hash value as the hash value corresponding to the digital fingerprint of the electronic evidence to be stored. Wherein the current timestamp is provided by the national time service centre. In the embodiment of the invention, the digital fingerprint of the electronic evidence to be stored and the current timestamp provided by the national time service center mechanism are subjected to hash operation again, so that the safety of electronic evidence storage is improved.
And S14, storing the hash value corresponding to the digital fingerprint of the electronic evidence to be stored to the current block of the node.
In specific implementation, the obtained hash value corresponding to the digital fingerprint of the electronic evidence to be stored is stored in the current block of the node, that is: and storing a hash value obtained by carrying out hash operation on the digital fingerprint and the current timestamp to the current block of the node.
After the hash value corresponding to the digital fingerprint of the electronic evidence to be stored is stored in the current block of the node, the method further includes:
and storing the corresponding relation between the evidence storing user identification information, the electronic evidence identification information and the position information of the block storing the hash value corresponding to the digital fingerprint of the electronic evidence.
In the embodiment of the present invention, the blockchain evidence storing platform may further provide evidence obtaining service, and obtaining evidence according to the process shown in fig. 3 may include the following steps:
and S21, receiving a forensics request, wherein the forensics request carries identification information of the electronic evidence to be extracted and identification information of a forensics user.
During specific implementation, evidence obtaining service is only provided for judicial evidence obtaining users, when electronic evidence relates to judicial events, judicial organizations initiate evidence obtaining applications to evidence storing users, after the evidence storing users agree, the evidence obtaining users return to-be-extracted electronic evidence identification information and evidence storing user identification information, the judicial organizations obtain the evidence users initiate evidence obtaining requests to the block chain evidence storing platform, and the to-be-extracted electronic evidence identification information and the evidence storing user identification information are carried in the evidence obtaining requests.
S22, according to the stored corresponding relation between the user identification information, the electronic evidence identification information and the position information of the block storing the hash value corresponding to the digital fingerprint of the electronic evidence, obtaining the position information of the block storing the hash value corresponding to the digital fingerprint of the electronic evidence to be extracted, corresponding to the evidence storing user identification information and the electronic evidence identification information to be extracted.
In specific implementation, after a evidence obtaining request sent by a forensic user of a judicial organization is received by a block chain evidence storing platform, electronic evidence identification information to be extracted and evidence storing user identification information carried in the evidence obtaining request are compared with electronic evidence identification information and user identification information in a corresponding relation of the evidence obtaining user identification information to be extracted and the stored user identification information, and when it is determined that the corresponding relation contains the same user identification information and electronic evidence identification information as the evidence storing user identification information and the electronic evidence identification information to be extracted, the evidence storing user identification information and the position information of a block corresponding to the digital fingerprint of the electronic evidence to be extracted and storing the hash value corresponding to the digital fingerprint of the electronic evidence to be extracted are obtained.
S23, according to the position information of the block storing the hash value corresponding to the digital fingerprint of the electronic evidence to be extracted, obtaining the hash value corresponding to the digital fingerprint of the electronic evidence to be extracted, and returning the hash value corresponding to the digital fingerprint of the electronic evidence to the sending end of the evidence obtaining request.
In specific implementation, the hash value corresponding to the digital fingerprint of the electronic evidence to be extracted is obtained from the block corresponding to the position information of the block storing the hash value corresponding to the digital fingerprint of the electronic evidence to be extracted, and the hash value corresponding to the digital fingerprint of the electronic evidence is returned to the sending end of the evidence obtaining request, that is: the judicial organization forensics the sending end of the user for the judicial organization to reasonably use as the reference evidence of the judicial event.
In the embodiment of the present invention, the block chain evidence storing platform may further support the existence of the user to verify the electronic evidence, and verifying the electronic evidence according to the process shown in fig. 4 may include the following steps:
s31, receiving a verification request sent by a sending end of a credentialing user, wherein the verification request carries electronic evidence identification information to be verified and credentialing user identification information.
In specific implementation, the block chain evidence storing platform receives a verification request sent by a sending end of an evidence storing user, wherein the verification request carries electronic evidence identification information requesting verification and the evidence storing user identification information.
S32, according to the correspondence between the stored user identification information and electronic evidence identification information and the location information of the block storing the hash value corresponding to the digital fingerprint of the electronic evidence, obtaining the location information of the block storing the hash value corresponding to the digital fingerprint of the electronic evidence to be verified corresponding to the evidence storing user identification information and the electronic evidence identification information to be verified.
In specific implementation, the block chain evidence storing platform compares the electronic evidence identification information to be verified carried in the verification request with the electronic evidence identification information and the user identification information in the corresponding relation between the evidence storing user identification information and the stored user identification information, and between the electronic evidence identification information and the position information of the block storing the hash value corresponding to the digital fingerprint of the electronic evidence, and when it is determined that the corresponding relation contains the user identification information and the electronic evidence identification information which are the same as the evidence storing user identification information and the electronic evidence identification information to be verified, the evidence storing user identification information and the position information of the block storing the hash value corresponding to the digital fingerprint of the electronic evidence to be verified corresponding to the evidence identification information to be verified are obtained.
S33, according to the position information of the block storing the hash value corresponding to the digital fingerprint of the electronic evidence to be verified, obtaining the hash value corresponding to the digital fingerprint of the electronic evidence to be verified, calculating the hash algorithm and the timestamp used when the hash value corresponding to the digital fingerprint of the electronic evidence to be verified is calculated, and returning the hash value corresponding to the digital fingerprint of the electronic evidence to be verified, the hash algorithm and the timestamp to the sending end of the evidence storing user, so that the sending end of the evidence storing user verifies the original data of the electronic evidence to be verified according to the hash algorithm and the timestamp to obtain a verification result.
In specific implementation, the block chain evidence storing platform acquires the hash value corresponding to the digital fingerprint of the electronic evidence to be verified according to the position information of the block storing the hash value corresponding to the digital fingerprint of the electronic evidence to be verified, calculates the hash algorithm and the timestamp used when the hash value corresponding to the digital fingerprint of the electronic evidence to be verified is calculated, and returns the hash value corresponding to the digital fingerprint of the electronic evidence to be verified, the hash algorithm and the timestamp to the sending end of the evidence storing user, so that the sending end of the evidence storing user performs hash operation on the locally stored electronic evidence original data to be verified according to the hash algorithm to generate the first digital fingerprint of the electronic evidence original data to be verified, and performs hash operation on the first digital fingerprint and the timestamp to obtain the first hash value corresponding to the first digital fingerprint of the electronic evidence to be verified, And comparing the first hash value with the hash value corresponding to the received digital fingerprint of the electronic evidence to be verified to obtain a verification result.
And S34, receiving the verification result information sent by the sending end of the authentication user.
And the block chain evidence storing platform receives the verification result information sent by the sending end of the evidence storing user.
After receiving the verification result information sent by the sending end of the credentialing user, the method further comprises the following steps:
when the verification result is determined to be that the first hash value is consistent with the stored hash value corresponding to the digital fingerprint of the electronic evidence to be verified, generating an evidence storing report, and sending the evidence storing report to a third-party authentication platform for endorsement, wherein the evidence storing report comprises the evidence storing user identification information, the verification result, the evidence storing user inquiry record information and the third-party authentication platform information; and when receiving the certificate showing request sent by the sending end of the certificate storing user, returning the certificate storing report to the sending end of the certificate storing user.
In specific implementation, if the first hash value is consistent with a stored hash value corresponding to a digital fingerprint of the electronic evidence to be verified, the electronic evidence is proved to be untampered, a block chain evidence storage platform generates an evidence storage report, and sends the evidence storage report to a third party Certification platform for endorsement, where the evidence storage report includes the evidence storage user identification information, the verification result, the evidence storage user query record information, and the third party Certification platform information, where the third party Certification platform may be, but is not limited to, a third party CA (Certification Authority), and the CA is a core of a public key infrastructure PKI and is a Authority responsible for issuing, certifying, and managing issued certificates.
When the evidence storing user needs to prove that the electronic evidence stored on the block chain evidence storing platform is not tampered and the electronic evidence is downloaded from the block chain evidence storing platform for use, the evidence can be applied, and when a sending end of the evidence storing user sends an evidence showing request to the block chain evidence storing platform, the evidence storing report is returned to the sending end of the evidence storing user.
The electronic evidence storing method provided by the embodiment of the invention is applied to a block chain evidence storing platform, the block chain evidence storing platform comprises a block chain network, when any node of the block chain network receives an evidence storing request carrying electronic evidence original data to be stored, hash operation is carried out on the electronic evidence original data to be stored to generate a digital fingerprint of the electronic evidence to be stored, the digital fingerprint is a hash value obtained by the hash operation on the electronic evidence original data to be stored, further, the hash operation is carried out on the digital fingerprint of the electronic evidence to be stored and a current timestamp to obtain a hash value corresponding to the digital fingerprint of the electronic evidence to be stored, and the obtained hash value corresponding to the digital fingerprint of the electronic evidence to be stored is stored in a current block of the node. Hash operation is carried out on electronic evidence original data uploaded by a user for storing evidence to obtain digital fingerprints, Hash operation is carried out on the digital fingerprints and the current time stamps again to obtain corresponding Hash values, the Hash values are stored to the current blocks, namely, the electronic evidence original data are stored in block chains after being encrypted for the second time and the time stamps, the electronic evidence can be used and invisible, the electronic evidence is prevented from being falsified, and the electronic evidence under different application scenes can be stored, so that the management efficiency of the user on the electronic evidence is improved, and meanwhile, the risk that the electronic evidence is leaked is avoided.
Based on the same inventive concept, the embodiment of the invention also provides an electronic evidence storing device, and as the principle of solving the problems of the electronic evidence storing device is similar to that of the electronic evidence storing method, the implementation of the device can be referred to the implementation of the method, and repeated details are not repeated.
As shown in fig. 5, which is a schematic structural diagram of an electronic evidence storing device provided in an embodiment of the present invention, the electronic evidence storing device is applied to a block chain evidence storing platform, where the block chain evidence storing platform includes a block chain network, where:
the first receiving unit 41 is configured to receive an evidence storing request, where the evidence storing request carries original data of an electronic evidence to be stored;
the first generating unit 42 is configured to perform a hash operation on the raw data of the electronic evidence to be stored, so as to generate a digital fingerprint of the electronic evidence to be stored;
an obtaining unit 43, configured to perform a hash operation on the digital fingerprint and the current timestamp to obtain a hash value corresponding to the digital fingerprint of the electronic evidence to be stored;
the storage unit 44 is configured to store the hash value corresponding to the digital fingerprint of the electronic evidence to be stored to the current block of the current node of the blockchain network.
Preferably, the evidence storing request also carries evidence storing user identification information and the electronic evidence identification information to be stored;
the storage unit 44 is further configured to store, after the hash value corresponding to the digital fingerprint of the electronic evidence to be stored is stored in the current block of the node, a corresponding relationship between the user identification information, the electronic evidence identification information, and the location information of the block in which the hash value corresponding to the digital fingerprint of the electronic evidence is stored.
Optionally, the apparatus further comprises:
the second receiving unit is used for receiving a forensics request, and the forensics request carries identification information of electronic evidence to be extracted and identification information of a forensics user;
a first obtaining unit, configured to obtain the user identification information for evidence storage and the position information of the block storing the hash value corresponding to the digital fingerprint of the electronic evidence corresponding to the electronic evidence identification information to be extracted according to the correspondence between the stored user identification information and the stored electronic evidence identification information and the position information of the block storing the hash value corresponding to the digital fingerprint of the electronic evidence to be extracted;
and the first returning unit is used for acquiring the hash value corresponding to the digital fingerprint of the electronic evidence to be extracted according to the position information of the block storing the hash value corresponding to the digital fingerprint of the electronic evidence to be extracted, and returning the hash value corresponding to the digital fingerprint of the electronic evidence to the sending end of the evidence obtaining request.
Optionally, the apparatus further comprises:
a third receiving unit, configured to receive a verification request sent by a sending end of a credentialing user, where the verification request carries electronic evidence identification information to be verified and credentialing user identification information;
a second obtaining unit, configured to obtain, according to a correspondence between the stored user identification information and the stored electronic evidence identification information and location information of a block storing a hash value corresponding to a digital fingerprint of the electronic evidence, location information of a block storing a hash value corresponding to a digital fingerprint of the electronic evidence to be verified, where the stored user identification information and the stored electronic evidence identification information correspond to each other;
a second returning unit, configured to obtain, according to the location information of the block storing the hash value corresponding to the digital fingerprint of the electronic evidence to be verified, calculate a hash algorithm and a timestamp used when calculating the hash value corresponding to the digital fingerprint of the electronic evidence to be verified, and return the hash value corresponding to the digital fingerprint of the electronic evidence to be verified, the hash algorithm, and the timestamp to the sending end of the proof user, so that the sending end of the proof user performs a hash operation on the locally stored electronic evidence original data to be verified according to the hash algorithm to generate a first digital fingerprint of the electronic evidence original data to be verified, and performs a hash operation on the first digital fingerprint and the timestamp to obtain a first hash value corresponding to the first digital fingerprint of the electronic evidence to be verified, Comparing the first hash value with a hash value corresponding to the received digital fingerprint of the electronic evidence to be verified to obtain a verification result;
and the fourth receiving unit is used for receiving the verification result information sent by the sending end of the credentialing user.
Optionally, the apparatus further comprises:
a second generation unit, configured to, after receiving verification result information sent by a sending end of the evidence storing user, generate an evidence storing report when it is determined that the verification result is that the first hash value is consistent with a hash value corresponding to the stored digital fingerprint of the electronic evidence to be verified, and send the evidence storing report to a third-party authentication platform for endorsement, where the evidence storing report includes the evidence storing user identification information, the verification result, the evidence storing user query record information, and the third-party authentication platform information;
and the third returning unit is used for returning the evidence storing report to the sending end of the evidence storing user when receiving the evidence showing request sent by the sending end of the evidence storing user.
Based on the same technical concept, an embodiment of the present invention further provides an electronic device 500, and referring to fig. 6, the electronic device 500 is configured to implement the electronic certificate storing method described in the foregoing method embodiment, where the electronic device 500 of this embodiment may include: a memory 501, a processor 502, and a computer program, such as an electronic proof program, stored in the memory and executable on the processor. The processor, when executing the computer program, implements the steps in the above-described embodiments of the electronic certificate storing method, such as step S11 shown in fig. 2. Alternatively, the processor, when executing the computer program, implements the functions of the modules/units in the above-described device embodiments, for example, 41.
The embodiment of the present invention does not limit the specific connection medium between the memory 501 and the processor 502. In the embodiment of the present application, the memory 501 and the processor 502 are connected by the bus 503 in fig. 6, the bus 503 is represented by a thick line in fig. 6, and the connection manner between other components is merely illustrative and is not limited thereto. The bus 503 may be divided into an address bus, a data bus, a control bus, etc. For ease of illustration, only one thick line is shown in FIG. 6, but this is not intended to represent only one bus or type of bus.
The memory 501 may be a volatile memory (volatile memory), such as a random-access memory (RAM); the memory 501 may also be a non-volatile memory (non-volatile memory) such as, but not limited to, a read-only memory (rom), a flash memory (flash memory), a Hard Disk Drive (HDD) or a solid-state drive (SSD), or any other medium which can be used to carry or store desired program code in the form of instructions or data structures and which can be accessed by a computer. The memory 501 may be a combination of the above memories.
The processor 502 is configured to implement an electronic certificate storing method shown in fig. 2, and includes:
the processor 502 is configured to call a computer program stored in the memory 501 to execute step S11 shown in fig. 2, where any node of the blockchain network receives a certificate storing request, where the certificate storing request carries original data of an electronic evidence to be stored, step S12 performs hash operation on the original data of the electronic evidence to be stored to generate a digital fingerprint of the electronic evidence to be stored, step S13 performs hash operation on the digital fingerprint and a current timestamp to obtain a hash value corresponding to the digital fingerprint of the electronic evidence to be stored, and step S14 stores the hash value corresponding to the digital fingerprint of the electronic evidence to be stored to a current block of the node.
The embodiment of the present application further provides a computer-readable storage medium, which stores computer-executable instructions required to be executed by the processor, and includes a program required to be executed by the processor.
In some possible embodiments, the various aspects of the electronic evidence storing method provided by the present invention may also be implemented as a program product, which includes program code, and when the program product runs on an electronic device, the program code is configured to enable the electronic device to perform the steps in the electronic evidence storing method according to various exemplary embodiments of the present invention described above in this specification, for example, the electronic device may perform step S11 shown in fig. 2, receive a request for evidence storage at any node of a block chain network, where the request for evidence storage carries original data of electronic evidence to be stored, step S12, perform a hash operation on the original data of electronic evidence to be stored to generate a digital fingerprint of the electronic evidence to be stored, step S13, perform a hash operation on the digital fingerprint and a current timestamp to obtain a hash value corresponding to the digital fingerprint of the electronic evidence to be stored, and step S14, storing the hash value corresponding to the digital fingerprint of the electronic evidence to be stored to the current block of the node.
As will be appreciated by one skilled in the art, embodiments of the present invention may be provided as a method, apparatus, or computer program product. Accordingly, the present invention may take the form of an entirely hardware embodiment, an entirely software embodiment or an embodiment combining software and hardware aspects. Furthermore, the present invention may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, CD-ROM, optical storage, and the like) having computer-usable program code embodied therein.
The present invention is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (devices), and computer program products according to embodiments of the invention. It will be understood that each flow and/or block of the flow diagrams and/or block diagrams, and combinations of flows and/or blocks in the flow diagrams and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be stored in a computer-readable memory that can direct a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer-readable memory produce an article of manufacture including instruction means which implement the function specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
While preferred embodiments of the present invention have been described, additional variations and modifications in those embodiments may occur to those skilled in the art once they learn of the basic inventive concepts. Therefore, it is intended that the appended claims be interpreted as including preferred embodiments and all such alterations and modifications as fall within the scope of the invention.
It will be apparent to those skilled in the art that various changes and modifications may be made in the present invention without departing from the spirit and scope of the invention. Thus, if such modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include such modifications and variations.

Claims (12)

1. An electronic evidence storing method is applied to a block chain evidence storing platform, wherein the block chain evidence storing platform comprises a block chain network, and the method comprises the following steps:
any node of the block chain network receives an evidence storing request, wherein the evidence storing request carries original data of electronic evidence to be stored;
performing hash operation on the electronic evidence original data to be stored to generate a digital fingerprint of the electronic evidence to be stored;
performing hash operation on the digital fingerprint and the current timestamp to obtain a hash value corresponding to the digital fingerprint of the electronic evidence to be stored;
and storing the hash value corresponding to the digital fingerprint of the electronic evidence to be stored to the current block of the node.
2. The method according to claim 1, wherein the evidence saving request further carries evidence saving user identification information and the electronic evidence identification information to be stored;
after the hash value corresponding to the digital fingerprint of the electronic evidence to be stored is stored in the current block of the node, the method further comprises the following steps:
and storing the corresponding relation between the user identification information, the electronic evidence identification information and the position information of the block of the hash value corresponding to the digital fingerprint storing the electronic evidence.
3. The method of claim 2, further comprising:
receiving a forensics request, wherein the forensics request carries identification information of electronic evidences to be extracted and identification information of forensics users;
according to the stored user identification information, the electronic evidence identification information and the corresponding relation of the position information of the block of the hash value corresponding to the digital fingerprint storing the electronic evidence, the position information of the block of the hash value corresponding to the digital fingerprint storing the electronic evidence corresponding to the evidence storing user identification information and the electronic evidence identification information to be extracted is obtained;
and acquiring the hash value corresponding to the digital fingerprint of the electronic evidence to be extracted according to the position information of the block storing the hash value corresponding to the digital fingerprint of the electronic evidence to be extracted, and returning the hash value corresponding to the digital fingerprint of the electronic evidence to the sending end of the evidence obtaining request.
4. The method of claim 2, further comprising:
receiving a verification request sent by a sending end of an evidence storing user, wherein the verification request carries electronic evidence identification information to be verified and evidence storing user identification information;
according to the corresponding relation between the stored user identification information, the electronic evidence identification information and the position information of the block storing the hash value corresponding to the digital fingerprint of the electronic evidence, the position information of the block storing the hash value corresponding to the digital fingerprint of the electronic evidence to be verified, corresponding to the evidence storage user identification information and the electronic evidence identification information to be verified, is obtained;
according to the position information of the block storing the hash value corresponding to the digital fingerprint of the electronic evidence to be verified, acquiring the hash value corresponding to the digital fingerprint of the electronic evidence to be verified, calculating the hash algorithm and the timestamp used when the hash value corresponding to the digital fingerprint of the electronic evidence to be verified is calculated, returning the hash value corresponding to the digital fingerprint of the electronic evidence to be verified, the hash algorithm and the timestamp to the sending end of the evidence storing user, so that the sending end of the evidence storing user performs hash operation on the locally stored original data of the electronic evidence to be verified according to the hash algorithm to generate a first digital fingerprint of the original data of the electronic evidence to be verified, and performs hash operation on the first digital fingerprint and the timestamp to obtain a first hash value corresponding to the first digital fingerprint of the electronic evidence to be verified, Comparing the first hash value with a hash value corresponding to the received digital fingerprint of the electronic evidence to be verified to obtain a verification result;
and receiving the verification result information sent by the sending end of the credentialing user.
5. The method of claim 4, wherein after receiving the authentication result information sent by the sending end of the authenticated user, further comprising:
when the verification result is determined to be that the first hash value is consistent with the stored hash value corresponding to the digital fingerprint of the electronic evidence to be verified, generating an evidence storing report, and sending the evidence storing report to a third-party authentication platform for endorsement, wherein the evidence storing report comprises the evidence storing user identification information, the verification result, the evidence storing user inquiry record information and the third-party authentication platform information;
and when receiving the certificate showing request sent by the sending end of the certificate storing user, returning the certificate storing report to the sending end of the certificate storing user.
6. The utility model provides an electron deposit certificate device which characterized in that is applied to block chain deposit certificate platform, block chain deposit certificate platform includes block chain network, wherein:
the first receiving unit is used for receiving an evidence storing request, wherein the evidence storing request carries original data of the electronic evidence to be stored;
the first generation unit is used for carrying out Hash operation on the electronic evidence original data to be stored to generate a digital fingerprint of the electronic evidence to be stored;
the obtaining unit is used for carrying out hash operation on the digital fingerprint and the current timestamp to obtain a hash value corresponding to the digital fingerprint of the electronic evidence to be stored;
and the storage unit is used for storing the hash value corresponding to the digital fingerprint of the electronic evidence to be stored to the current block of the current node of the block chain network.
7. The apparatus according to claim 6, wherein the credentialing request further carries credentialing user identification information and the electronic evidence identification information to be stored;
the storage unit is further configured to store the user identification information, the electronic evidence identification information, and the corresponding relationship between the electronic evidence identification information and the position information of the block storing the hash value corresponding to the digital fingerprint of the electronic evidence after the hash value corresponding to the digital fingerprint of the electronic evidence to be stored is stored in the current block of the node.
8. The apparatus of claim 7, further comprising:
the second receiving unit is used for receiving a forensics request, and the forensics request carries identification information of electronic evidence to be extracted and identification information of a forensics user;
a first obtaining unit, configured to obtain the user identification information for evidence storage and the position information of the block storing the hash value corresponding to the digital fingerprint of the electronic evidence corresponding to the electronic evidence identification information to be extracted according to the correspondence between the stored user identification information and the stored electronic evidence identification information and the position information of the block storing the hash value corresponding to the digital fingerprint of the electronic evidence to be extracted;
and the first returning unit is used for acquiring the hash value corresponding to the digital fingerprint of the electronic evidence to be extracted according to the position information of the block storing the hash value corresponding to the digital fingerprint of the electronic evidence to be extracted, and returning the hash value corresponding to the digital fingerprint of the electronic evidence to the sending end of the evidence obtaining request.
9. The apparatus of claim 7, further comprising:
a third receiving unit, configured to receive a verification request sent by a sending end of a credentialing user, where the verification request carries electronic evidence identification information to be verified and credentialing user identification information;
a second obtaining unit, configured to obtain the evidence storing user identification information and the location information of the block storing the hash value corresponding to the digital fingerprint of the electronic evidence corresponding to the electronic evidence identification information to be verified according to the correspondence between the stored user identification information and the location information of the block storing the hash value corresponding to the digital fingerprint of the electronic evidence;
a second returning unit, configured to obtain, according to the location information of the block storing the hash value corresponding to the digital fingerprint of the electronic evidence to be verified, calculate a hash algorithm and a timestamp used when calculating the hash value corresponding to the digital fingerprint of the electronic evidence to be verified, and return the hash value corresponding to the digital fingerprint of the electronic evidence to be verified, the hash algorithm, and the timestamp to the sending end of the proof user, so that the sending end of the proof user performs a hash operation on the locally stored electronic evidence original data to be verified according to the hash algorithm to generate a first digital fingerprint of the electronic evidence original data to be verified, and performs a hash operation on the first digital fingerprint and the timestamp to obtain a first hash value corresponding to the first digital fingerprint of the electronic evidence to be verified, Comparing the first hash value with a hash value corresponding to the received digital fingerprint of the electronic evidence to be verified to obtain a verification result;
and the fourth receiving unit is used for receiving the verification result information sent by the sending end of the credentialing user.
10. The apparatus of claim 9, further comprising:
a second generation unit, configured to, after receiving verification result information sent by a sending end of the evidence storing user, generate an evidence storing report when it is determined that the verification result is that the first hash value is consistent with a hash value corresponding to the stored digital fingerprint of the electronic evidence to be verified, and send the evidence storing report to a third-party authentication platform for endorsement, where the evidence storing report includes the evidence storing user identification information, the verification result, the evidence storing user query record information, and the third-party authentication platform information;
and the third returning unit is used for returning the certificate storing report to the sending end of the certificate storing user when receiving the certificate showing request sent by the sending end of the certificate storing user.
11. An electronic device comprising a memory, a processor and a computer program stored on the memory and executable on the processor, wherein the processor implements the electronic proof method of any of claims 1 to 5 when executing the program.
12. A computer-readable storage medium, on which a computer program is stored, which program, when executed by a processor, carries out the steps of the electronic proof method according to any one of claims 1 to 5.
CN202011598645.1A 2020-12-30 2020-12-30 Electronic certificate storage method and device, electronic equipment and storage medium Pending CN114691669A (en)

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20220327239A1 (en) * 2021-04-09 2022-10-13 VIQ Solutions Inc. Securing and managing offline digital evidence with a smart data lease system
CN115412253A (en) * 2022-08-01 2022-11-29 云南大学 Digital certificate preparation method based on block chain technology
CN115439118A (en) * 2022-08-02 2022-12-06 上海网商电子商务有限公司 Digital certificate storage management method based on block chain
CN117714071A (en) * 2023-12-18 2024-03-15 中金金融认证中心有限公司 Scene-based digital certificate issuing method, system and storage medium

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20220327239A1 (en) * 2021-04-09 2022-10-13 VIQ Solutions Inc. Securing and managing offline digital evidence with a smart data lease system
US11822701B2 (en) * 2021-04-09 2023-11-21 VIQ Solutions Inc. Securing and managing offline digital evidence with a smart data lease system
CN115412253A (en) * 2022-08-01 2022-11-29 云南大学 Digital certificate preparation method based on block chain technology
CN115439118A (en) * 2022-08-02 2022-12-06 上海网商电子商务有限公司 Digital certificate storage management method based on block chain
CN115439118B (en) * 2022-08-02 2023-11-21 上海网商电子商务有限公司 Digital certificate storage management method based on blockchain
CN117714071A (en) * 2023-12-18 2024-03-15 中金金融认证中心有限公司 Scene-based digital certificate issuing method, system and storage medium

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