CN112329064A - Electronic document safety management system and method based on digital mark - Google Patents
Electronic document safety management system and method based on digital mark Download PDFInfo
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Abstract
The invention provides an electronic document safety management system and method based on digital marks, wherein the system comprises: the system comprises a digital mark generation module, a document safe use module, a document safe circulation module and a document safe output module; the method specifically comprises the following steps: generating a security attribute for the electronic document by using the digital mark generation module, and digitally marking the electronic document according to the security attribute; the document security use module is used for carrying out security control and audit on the use of the digitally marked electronic document; the document security circulation module is used for carrying out security control and audit on circulation of the digitally marked electronic document; and utilizing the document safety output module to perform safety control and audit on the output of the digitally marked electronic document. The invention relies on the block chain technology and the digital marking method, solves the problem of the safety management of the electronic document, and greatly improves the overall safety and the use efficiency of the electronic document safety management system.
Description
Technical Field
The invention relates to the field of document security technology management, in particular to an electronic document security management system and method based on digital marks.
Background
Information data such as electronic documents and the like are core assets of companies, are life lines of enterprises, and protect data security is a source basic work for protecting national secrets, business secrets and personal privacy. At present, mainstream schemes for electronic document security protection and data leakage prevention at home and abroad lack a unique identity mark facing data and a uniform security control method based on the mark, so that a uniform data security control 'hand grip' is lacked in the links of data generation, use, circulation, outgoing, filing, output and the like, and trusted transmission and control connection cannot be performed between each business system and a security product. Moreover, the data computing environment lacks the capability of recognizing the 'strange oneself' and the insights and identification methods of behaviors, so that the data of cross-platform, cross-application and cross-service cannot be recognized and audited quickly and efficiently in the processes of data use, network transmission, boundary exchange and the like, and sensitive information and malicious behaviors cannot be blocked quickly.
A blockchain is a non-falsifiable and non-falsifiable distributed book (also called a database) that connects data blocks in sequence in chronological order and is cryptographically secured. It has the characteristics of non-tamper, anti-counterfeiting, traceability and the like. In the block chain, each block contains the data fingerprints (hash values) of all data packets of the previous block, and when the data fingerprint (hash value) of the current block is calculated, the data fingerprint (hash value) of the previous block is also contained, so that a link relation is formed. Therefore, once any chunk is changed, all the data fingerprints (hash values) of the subsequent chunks are changed, all people can see and discover that the data is tampered, and all people cannot recognize invalid data. This ensures that the chunk data is not tampered with in the blockchain.
The existing document marking technology is insufficient in safety of watermarks, signatures and the like, corresponding attribute information is not bound with a document, a centralized database is mostly adopted for storage, document marks and attribute information are easy to separate and tamper, and a data center generally has the risk of single-point faults. By means of the advantages of the block chain technology, the safety problem of the electronic documents can be well solved, and the overall safety and the using efficiency of the system are greatly improved.
Disclosure of Invention
In view of the fact that the mainstream schemes for electronic document security protection and data leakage prevention at home and abroad at present lack of unique identity marks facing data and a uniform security control method based on marks, the existing document marking technology is insufficient in security including watermarks, signatures and the like, corresponding attribute information is not bound with documents, centralized storage is mostly adopted, marks and attributes are easy to separate and are tampered, and the risk of single-point failure of a data center exists. The invention adopts the technical scheme that a digital mark-based electronic document safety management system and a digital mark-based electronic document safety management method are provided based on a block chain technology and a digital mark management and control technology.
The system of the invention comprises: the system comprises a digital mark generation module, a document safe use module, a document safe circulation module and a document safe output module.
The digital mark generation module is used for generating security attributes of the electronic documents, digitally marking the electronic documents according to the security attributes, and respectively outputting the digitally marked electronic documents to the document security use module, the document security circulation module and the document security output module;
the document safe use module is used for carrying out safe control and audit on the use (opening, browsing and the like) of the digitally marked electronic document at the PC end;
the document security circulation module is used for performing security control and audit on circulation (OA, mail and the like) of the digitally marked electronic document at different PC terminals;
the document safety output module is used for carrying out safety control and audit on the output (printing, burning and the like) of the electronic document after the digital mark.
The method specifically comprises the following steps:
s1: generating a security attribute for the electronic document by using the digital mark generation module, and digitally marking the electronic document according to the security attribute; respectively outputting the digitally marked electronic documents to a document safety use module, a document safety circulation module and a document safety output module;
s2: the document security use module is used for carrying out security control and audit on the use of the digitally marked electronic document at the PC end;
the document security circulation module is used for carrying out security control and audit on circulation of the digitally marked electronic document at different PC terminals;
and utilizing the document safety output module to perform safety control and audit on the output of the digitally marked electronic document.
The invention has the beneficial effects that:
(1) the invention relies on the advantages of the block chain technology to design an electronic document security management system based on digital marks, which comprises: the system comprises a mark safety generation module, a document safety use module, a document safety circulation module and a document safety output module, and realizes safety protection and supervision on the whole life cycle of the electronic document based on the identity mark, so that the safety management problem of the electronic document is solved, and the overall safety and the use efficiency of the system are greatly improved.
(2) A method for generating an electronic document identity tag is designed for the system, and the identity tag, attribute information and the electronic document are spliced and fused, so that each electronic document has a globally unique identity tag and corresponding attributes.
Drawings
FIG. 1 is a logical relationship diagram of modules of a digital mark-based electronic document security management system according to an embodiment of the present invention;
FIG. 2 is a flow chart of security attribute generation and binding of an electronic document security management system based on digital mark in the embodiment of the present invention;
FIG. 3 is a diagram illustrating a document chain block of an electronic document security management system based on digital mark in an embodiment of the present invention;
FIG. 4 is a flowchart of document access control in an electronic document security management system based on digital mark-up according to an embodiment of the present invention;
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, embodiments of the present invention will be further described with reference to the accompanying drawings.
Please refer to fig. 1, fig. 1 is a logic relationship diagram of modules of an electronic document security management system based on digital mark according to an embodiment of the present invention;
the embodiment provides an electronic document security management system based on digital marks, which comprises: the system comprises a digital mark generation module, a document safe use module, a document safe circulation module and a document safe output module;
the digital mark generation module is used for generating security attributes of the electronic documents, digitally marking the electronic documents according to the security attributes, and respectively outputting the digitally marked electronic documents to the document security use module, the document security circulation module and the document security output module;
the document safety use module is used for carrying out safety control and audit on the use (opening, browsing and the like) of the digitally marked electronic document at the PC end;
the document security circulation module is used for performing security control and audit on circulation (OA, e-mail and the like) of the digitally marked electronic document at different PC terminals;
and the document safety output module is used for carrying out safety control and audit on the output (printing, burning and the like) of the electronic document after the digital mark.
The embodiment also provides an electronic document security management method based on digital marks, which is applied to an electronic document security management system based on digital marks and comprises the following specific steps:
s1: generating security attributes for the electronic documents by using a digital mark generation module, and digitally marking the electronic documents according to the security attributes; respectively outputting the digitally marked electronic documents to a document safety use module, a document safety circulation module and a document safety output module;
in this embodiment, the digital mark generation module generates a security attribute including a unique identity ID, a document content Hash value, and an important Level value of a document for each important electronic document at a PC terminal, writes the security attribute value into a corresponding block in a document chain using a block chain technique, and writes the unique identity ID into Metadata of the electronic document. Each electronic document has a unique identity ID which can be rapidly identified, and the binding and the non-tampering of the identity ID and the electronic document are guaranteed through a block chain technology.
Please refer to fig. 2 for the main steps and flow of generating and binding the security attribute related to the digital mark generating module, wherein the specific flow is as follows:
1) the digital mark generation module monitors the operation of 'setting digital mark' of a PC terminal user, and specifically, the user selects 'setting digital mark' for a certain electronic document through a right-click menu.
2) The digital mark generation module generates a unique identity ID of the electronic document and calculates a Hash value of the document. The Unique ID of the electronic document may be implemented by using UUID, which is an abbreviation of universal Unique Identifier (universal Unique Identifier), and is derived from DCE (Distributed Computing Environment) specification of OSF (Open Software Foundation), and the UUID may enable all elements in the Distributed system to have Unique identification information. To ensure the uniqueness of the UUID, the specification defines elements including the network card MAC address, timestamp, Namespace (Namespace), random or pseudo-random numbers, timing, and the like, as well as algorithms to generate the UUID from these elements. In a specific coding implementation, for example, JDK itself provides the method randomUUID () that generates UUID.
3) The digital mark generation module acquires an 'important Level value' set by a user through a human-computer interaction interface for 'setting digital marks' in the step 1), wherein the Level value can be set to be in the forms of '1, 2, 3' or 'important, common' and the like.
4) After the user finishes the operation of setting a digital mark and closes the man-machine interaction interface, the digital mark generation module writes the identity ID generated in the step 2) into the Metadata of the electronic document by calling a standard interface of an operating system, so as to realize the fusion of the unique identity ID and the electronic document; and (3) taking the identity ID and the Hash value generated in the step 2) and the level value generated in the step 3) as the security attribute value of the electronic document, and writing the security attribute value and the Hash value into a corresponding block in a document chain adopting a block chain technology, referring to fig. 3, thereby realizing the non-falsification of the binding relationship between the identity ID and the electronic document.
S2: the document security use module is used for carrying out security control and audit on the use of the digitally marked electronic document at the PC end;
the document security circulation module is used for carrying out security control and audit on circulation of the digitally marked electronic document at different PC terminals;
and carrying out safety control and audit on the output of the digitally marked electronic document by using a document safety output module.
In the embodiment, the PC terminal of the document safe use module identifies each important electronic document and controls the use authority. Taking a scene that a user opens a certain electronic document by double-click at a PC terminal as an example, the document safe use module monitors double-click operation of the user on the electronic document, intercepts and filters the operation, and increases control over the document opening authority. Referring to fig. 4, the specific steps and processes are as follows:
1) the document safe use module monitors the operation of opening the electronic document by a user, scans Metadata of the electronic document and judges whether the electronic document has a UUID or not;
2) if the UUID exists, the electronic document is an important electronic document set by a user and contains security attributes such as digital marks, and the step 3) is carried out; otherwise, the electronic document is shown to be a common document, the document is normally opened, the process is terminated, and the step 7) is carried out;
3) comparing the read UUID with the UUID of each block of the document chain, and if the same UUID exists, entering the step 4); otherwise, the electronic document is damaged, the user is prompted to be abnormal, the process is terminated, and the step 7) is carried out;
4) calculating a Hash value of the electronic document, comparing the Hash value with the Hash value of the block where the UUID is located in the document chain, and entering the step 5) if the two Hash values are the same; otherwise, the electronic document is damaged, the user is prompted to be abnormal, the process is terminated, and the step 7) is carried out;
5) comparing the Level value of the block where the UUID is located in the document chain with the Level value of the current user (obtained from an identity authentication system such as CA or the like or the existing system such as OA and the like), and entering step 6 if the Level value of the user is greater than the Level value of the document); otherwise, prompting that the access right is not enough, terminating the process and entering the step 7);
6) normally opening the electronic document, and normally browsing the electronic document by a current user;
7) and (6) ending.
The document security circulation module in the embodiment is similar to the document security use module in the working principle, and monitors and controls access to an event that a user circulates by using a document, including but not limited to scenarios such as sending through an OA attachment and sending an email attachment. When the electronic document is uploaded to application systems such as OA and mails as an attachment, the application systems sequentially identify and compare the security attributes of the electronic document through a document security circulation module, firstly judge the type, authenticity and integrity of the electronic document through UUID and Hash values and judge whether the electronic document is damaged or not, and then compare the Level value of the electronic document with the Level value of a receiver. After the comparison is passed, the electronic document can be normally sent to the receiver through application systems such as OA, mail and the like, otherwise, the document is prompted to be damaged or the access authority is not enough, and the divulgence event caused by the fact that high-level important files are transferred to low-level users is prevented.
The document security output module in this embodiment is similar to the document security circulation module in the working principle, and monitors and controls access to an event that a user uses an electronic document to output, including but not limited to, through printing, burning and other scenes. When the electronic document is printed or recorded, the printing and recording auditing system sequentially identifies and compares the security attributes of the electronic document through the document security output module, firstly judges the type, authenticity and integrity of the electronic document through UUID and Hash values and judges whether the electronic document is damaged or not, and then compares the Level value of the electronic document with the Level value of the current printing or recording personnel. After the comparison is passed, the electronic document can be normally output through a printing and recording auditing system, otherwise, the electronic document is prompted to be damaged or the access authority is insufficient, and a secret divulging event caused by outputting high-level important files to low-level users is prevented.
The innovation points of the invention are as follows:
(1) designing a generation method of electronic document identity tags, splicing and fusing the identity tags and attribute information with electronic documents, and realizing that each electronic document has a globally unique identity tag and corresponding attributes.
(2) Designing modules such as an identity mark safety generation module, a document safety use module, a document safety circulation module, a document safety output module and the like, and realizing safety protection and supervision on the whole life cycle of the electronic document based on the identity mark.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.
Claims (8)
1. A digital mark-based electronic document security management system, the system comprising: the system comprises a digital mark generation module, a document safe use module, a document safe circulation module and a document safe output module;
the digital mark generation module is used for generating security attributes of the electronic documents, digitally marking the electronic documents according to the security attributes, and respectively outputting the digitally marked electronic documents to the document security use module, the document security circulation module and the document security output module;
the document safe use module is used for carrying out safe control and audit on the use of the digitally marked electronic document;
the document security circulation module is used for performing security control and audit on circulation of the digitally marked electronic document;
and the document safety output module is used for carrying out safety control and audit on the output of the digitally marked electronic document.
2. A digital mark-based electronic document security management method applied to the digital mark-based electronic document security management system according to claim 1, wherein the method comprises the following specific steps:
s1: generating a security attribute for the electronic document by using the digital mark generation module, and digitally marking the electronic document according to the security attribute; respectively outputting the digitally marked electronic documents to a document safety use module, a document safety circulation module and a document safety output module;
s2: the document security use module is used for carrying out security control and audit on the use of the digitally marked electronic document;
the document security circulation module is used for carrying out security control and audit on circulation of the digitally marked electronic document;
and utilizing the document safety output module to perform safety control and audit on the output of the digitally marked electronic document.
3. The digital mark-based electronic document security management system according to claim 2, wherein the digital mark module generates security attributes for the electronic document in step S1, the security attributes including: the unique identity ID, the Hash value of the content of the electronic document and the Level value of the important Level of the electronic document;
the unique identity ID of the electronic document is realized by adopting a UUID.
4. The digital mark-based electronic document security management system according to claim 2, wherein in step S2, said use of the electronic document includes: opening the electronic document and browsing the electronic document;
the circulation of the electronic document includes: sending the electronic document through an OA attachment and sending the electronic document through an email attachment;
the outputting of the electronic document includes: printing the electronic document and burning the electronic document.
5. The digital mark-based electronic document security management method according to claim 3, wherein the steps of generating the security attribute for the electronic document by using the digital mark generation module and digitally marking the electronic document according to the security attribute in step S1 are as follows:
s11, the digital mark generation module monitors the operation of 'setting digital mark' of the user;
s12, generating the unique ID of the electronic document by the digital mark generation module, and calculating the Hash value of the electronic document;
s13, the digital mark generation module obtains the ' important Level value ' set by the user through the man-machine interaction interface ' of ' setting digital mark ' in the step S11;
s14, after the operation of 'setting digital mark' is finished and the man-machine interaction interface is closed, the digital mark generating module writes the ID generated in the step S12 into the Metadata of the electronic document by calling the standard interface of the operating system, so as to realize the fusion of the unique ID and the electronic document; and writing the identity ID and the Hash value generated in the step S12 and the level value generated in the step S13 as the security attribute value of the electronic document into a corresponding block in a document chain adopting a block chain technology, so as to realize the binding of the identity ID and the electronic document.
6. The method according to claim 3, wherein the step S2 of using the document security module to perform security control and audit on the digitally signed electronic document includes the specific steps of;
s201, a document safe use module monitors the operation of opening an electronic document by a user, scans Metadata of the electronic document and judges whether the electronic document has a UUID or not;
s202, if the UUID exists, the electronic document is an important document set by a user and contains the security attribute of a digital mark, and the step S203 is executed; otherwise, the electronic document is a general document, and the process directly goes to step S206;
s203, comparing the read UUIDs with the UUIDs of all blocks of the document chain, and if the same UUIDs exist, entering the step S204; otherwise, the electronic document is damaged, an exception is prompted to the user, the process is terminated, and the step S207 is entered;
s204, calculating a Hash value of the electronic document, comparing the Hash value with the Hash value of the block where the UUID is located in the document chain, and if the two Hash values are the same, entering the step S205; otherwise, the electronic document is damaged, an exception is prompted to the user, the process is terminated, and the step S207 is entered;
s205, comparing the Level value of the block where the UUID is located in the document chain with the Level value of the current user, and if the Level value of the user is larger than the Level value of the document, entering S206; otherwise, prompting that the access right is not enough, terminating the process, and entering step S207;
s206, normally opening the electronic document, and normally browsing the electronic document by the current user;
and S207, ending.
7. The method according to claim 3, wherein in step S2, said specific task of performing security control and audit on the circulation of the tagged electronic document by using the document security circulation module is as follows:
s211, the document security circulation module monitors that when a user uploads an electronic document to an OA (office automation) and mail application system as an attachment, the Metadata of the electronic document is scanned, and whether the electronic document has a UUID (user identifier) or not is judged;
s212, if the UUID exists, the electronic document is an important document set by a user and contains the security attribute of the digital mark, and the step S213 is carried out; otherwise, the electronic document is a general document, and the process directly proceeds to step S216;
s213, comparing the read UUIDs with the UUIDs of the blocks of the document chain, and if the same UUIDs exist, entering the step S214; otherwise, the electronic document is damaged, an exception is prompted to the user, the process is terminated, and the step S217 is carried out;
s214, calculating a Hash value of the electronic document, comparing the Hash value with the Hash value of the block where the UUID is located in the document chain, and if the two Hash values are the same, entering the step S215; otherwise, the electronic document is damaged, an exception is prompted to the user, the process is terminated, and the step S217 is carried out;
s215, comparing the Level value of the block where the UUID is located in the document chain with the Level value of the current user, and if the Level value of the user is larger than the Level value of the document, entering the step S216; otherwise, prompting that the access right is not enough, terminating the process, and entering step S217;
s216, normally sending the electronic document;
and S217, ending.
8. The electronic document security management method based on digital mark as claimed in claim 3, wherein in step S2, said document security output module performs security control and audit on the output of the marked electronic document, specifically working as:
s221, when the document safety output module monitors that a user prints or records the electronic document, scanning Metadata of the electronic document, and judging whether the document has a UUID or not;
s222, if the UUID exists, the electronic document is an important document set by a user and contains the security attribute of the digital mark, and the step S223 is executed; otherwise, it indicates that the electronic document is a normal electronic document, and the process goes directly to step S226;
s223, comparing the read UUIDs with the UUIDs of all blocks of the document chain, and if the same UUIDs exist, entering the step S224; otherwise, the document is damaged, an exception is prompted to the user, the process is terminated, and the step S227 is entered;
s224, calculating a Hash value of the electronic document, comparing the Hash value with a Hash value of a block where the UUID is located in the document chain, and if the two Hash values are the same, entering the step S225; otherwise, the electronic document is damaged, an exception is prompted to the user, the process is terminated, and the step S227 is entered;
s225, comparing the Level value of the block where the UUID is located in the document chain with the Level value of the current user, and if the Level value of the user is larger than the Level value of the document, entering the step S226; otherwise, prompting that the access right is not enough, terminating the process, and entering step S227;
s226, normally printing or burning the electronic document;
and S227, ending.
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