CN116992173B - Method and system for opening encrypted file by browser based on MV3 - Google Patents
Method and system for opening encrypted file by browser based on MV3 Download PDFInfo
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- CN116992173B CN116992173B CN202311264565.6A CN202311264565A CN116992173B CN 116992173 B CN116992173 B CN 116992173B CN 202311264565 A CN202311264565 A CN 202311264565A CN 116992173 B CN116992173 B CN 116992173B
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- opening
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- 238000000034 method Methods 0.000 title claims abstract description 50
- 238000009877 rendering Methods 0.000 claims abstract description 18
- 238000012544 monitoring process Methods 0.000 claims abstract description 15
- 238000004891 communication Methods 0.000 claims description 5
- 238000012545 processing Methods 0.000 abstract description 3
- 238000005516 engineering process Methods 0.000 description 2
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000012217 deletion Methods 0.000 description 1
- 230000037430 deletion Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 230000001960 triggered effect Effects 0.000 description 1
Classifications
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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
- G06F16/90—Details of database functions independent of the retrieved data types
- G06F16/95—Retrieval from the web
- G06F16/955—Retrieval from the web using information identifiers, e.g. uniform resource locators [URL]
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- 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
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- 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
Abstract
The application discloses a method and a system for opening an encrypted file by a browser based on MV3, which mainly relate to the technical field of confidential data processing and are used for solving the problems that the existing method for opening the confidential file has a confidential risk and the method for opening the encrypted file by the browser is single. Comprising the following steps: monitoring a preset opening action corresponding to the PDF file through the MV3 plug-in, and further obtaining a first URL address corresponding to the PDF file; sending the information to a preset secret-related terminal application; when the encrypted file is the encrypted file, acquiring the decrypting user authority and the login user authority of the current login user, decrypting the PDF file when the login user authority contains the decrypting user authority, and returning to a second URL address of the decrypting PDF file; rendering and displaying the decrypted PDF file based on a preset URL redirection rule; when the browsing action is acquired, a file deleting instruction is sent to the preset confidential terminal application, so that the preset confidential terminal application deletes the decrypted PDF file.
Description
Technical Field
The application relates to the technical field of confidential data processing, in particular to a method and a system for opening an encrypted file by a browser based on MV 3.
Background
With the increasing perfection of network security, data security has become an important problem that enterprises and individuals must face, especially in the field of security, ensuring the integrity and security of security documents, and is a great importance in the field of data security. How to ensure the integrity of the encrypted file and to improve the user experience as much as possible under the scene of opening or uploading the encrypted file by using a browser is a serious concern for confidential developers.
At present, two methods for opening an encrypted file through a browser under the environment of a secret-related terminal are adopted, firstly, the secret-related terminal puts browser processes such as Chrome/Edge/Firefox into a custom trusted process list, and for the scene of uploading or opening the encrypted file by the browser, the kernel cannot distinguish, the encrypted file can be automatically decrypted, and especially when the encrypted file is uploaded, secret-related file is leaked and externally transmitted, so that the result is not considered; secondly, intercepting the action of opening the file by the browser through the Hook technology, obtaining a command line for opening the encrypted PDF file by the browser, and then carrying out a command line method for redirecting to the decrypted URL (Uniform Resource Locator ).
Therefore, a method and system for opening an encrypted file by using a MV 3-based browser are needed to solve the above-mentioned problems: the problem that the secret related file is leaked exists when the secret related file is opened, and the method for opening the encrypted file by the browser is single.
Disclosure of Invention
Aiming at the defects in the prior art, the application provides a method and a system for opening an encrypted file by a browser based on MV3, which are used for solving the problems that the existing method for opening the encrypted file has a secret leakage risk and the method for opening the encrypted file by the browser is single.
In a first aspect, the present application provides a method for opening an encrypted file by a MV 3-based browser, the method comprising: monitoring a preset opening action corresponding to the PDF file through the MV3 plug-in, and further obtaining a first URL address corresponding to the PDF file; the first URL address is sent to a preset secret-related terminal application; the preset opening action at least comprises the following steps: double click action, right key action, drag action and download opening action; determining whether the PDF file is an encrypted file or not through presetting a secret-related terminal application; when the encrypted file is the encrypted file, obtaining the decryption user permission of the encrypted file and the login user permission of the current login user, decrypting the PDF file when the login user permission contains the decryption user permission, and returning a second URL address of the decryption PDF file to the MV3 plug-in; rendering and displaying the decrypted PDF file corresponding to the second URL address based on a preset URL redirection rule in the MV3 plug-in; when the MV3 plug-in acquires the browsing closing action, the MV3 plug-in simultaneously sends a file deleting instruction to the preset confidential terminal application so as to enable the preset confidential terminal application to delete the decrypted PDF file.
Further, monitoring a preset opening action corresponding to the PDF file through the MV3 plug-in, which specifically comprises the following steps: monitoring a loading event of a tab in the browser through the MV3 plug-in to monitor whether a preset opening action exists in the loading event; and determining whether the loading event corresponds to the PDF file or not through a preset PDF file judging instruction, so as to monitor the preset opening action corresponding to the PDF file.
Further, the PDF file comprises a file header, and the file header comprises Json information for storing the authority of the decrypting user; determining whether the PDF file is an encrypted file through presetting a secret-related terminal application specifically comprises the following steps: reading Json information corresponding to a PDF file through a preset confidential terminal application, and obtaining a decryption user right; determining whether the PDF file is an encrypted file according to the decrypting user authority; wherein, the decrypting user right at least comprises: whether the file is encrypted.
Further, the URL address is sent to a preset confidential terminal application, which specifically comprises the following steps: based on the HTTP communication protocol, the MV3 plug-in sends the URL address to a preset secret-related terminal application.
Further, after determining whether the PDF file is an encrypted file, the method further includes: and when the file is not encrypted, directly returning the first URL address to the MV3 plugin through a preset confidential terminal application, so that the MV3 plugin renders and displays according to the first URL address.
Further, after obtaining the decrypted user rights of the encrypted file and the login user rights of the current login user, the method further comprises: when the login user permission does not contain the decryption user permission, generating specific error content which does not contain the decryption user permission through a preset secret-related terminal application, and returning the specific error content to the MV3 plug-in unit; and displaying the specific error content through a preset browser popup window.
Further, based on a preset URL redirection rule in the MV3 plugin, rendering and displaying the decrypted PDF file corresponding to the second URL address, which specifically includes: redirecting the first URL address to a second URL address based on a preset URL redirection rule; calling an updateDynamicRules () method to realize the jump to the second URL address; and calling a tab.update () method to realize rendering and displaying the decrypted PDF file corresponding to the second URL address.
In a second aspect, the present application provides a system for opening an encrypted file by a MV 3-based browser, the system comprising: the sending module is used for monitoring a preset opening action corresponding to the PDF file through the MV3 plug-in unit, and further obtaining a first URL address corresponding to the PDF file; the first URL address is sent to a preset secret-related terminal application; the preset opening action at least comprises the following steps: double click action, right key action, drag action and download opening action; the rendering module is used for determining whether the PDF file is an encrypted file or not through presetting secret-related terminal application; when the encrypted file is the encrypted file, obtaining the decryption user permission of the encrypted file and the login user permission of the current login user, decrypting the PDF file when the login user permission contains the decryption user permission, and returning a second URL address of the decryption PDF file to the MV3 plug-in; rendering and displaying the decrypted PDF file corresponding to the second URL address based on a preset URL redirection rule in the MV3 plug-in; and the deleting module is used for transmitting a file deleting instruction to the preset confidential terminal application at the same time when the MV3 plug-in acquires the browsing closing action, so that the preset confidential terminal application deletes the decrypted PDF file.
As will be appreciated by those skilled in the art, the present application has at least the following beneficial effects:
at least configuring the preset opening action: double click action, right key action, dragging action and downloading opening action, and a mode of supporting various opening encrypted files is realized; specifically, by monitoring the loading event of the tab in the browser, since the opening action of the browser file is accompanied with the loading event of the tab, the MV3 plugin can monitor the loading event to realize monitoring of the preset opening action in various modes. And uploading of the file does not trigger the event, the decrypted PDF file corresponding to the second URL address is rendered and displayed through a preset URL redirection rule, the uploading of the encrypted file is not intercepted, and the integrity and the safety of the confidential file are ensured. In addition, when the MV3 plug-in acquires the browse closing action, the MV3 plug-in simultaneously sends a file deleting instruction to the preset secret related terminal application, so that the preset secret related terminal application deletes the decrypted PDF file, the decrypted temporary file is deleted in real time, and the secret related file leakage risk is avoided.
Drawings
Some embodiments of the present disclosure are described below with reference to the accompanying drawings, in which:
fig. 1 is a flowchart of a method for opening an encrypted file by a browser based on MV3 according to an embodiment of the present application.
Fig. 2 is a schematic diagram of an internal structure of a system for opening an encrypted file by using a MV 3-based browser according to an embodiment of the present application.
Detailed Description
It should be understood by those skilled in the art that the embodiments described below are only preferred embodiments of the present disclosure, and do not represent that the present disclosure can be realized only by the preferred embodiments, which are merely for explaining the technical principles of the present disclosure, not for limiting the scope of the present disclosure. Based on the preferred embodiments provided by the present disclosure, all other embodiments that may be obtained by one of ordinary skill in the art without inventive effort shall still fall within the scope of the present disclosure.
It should also be noted that the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one … …" does not exclude the presence of other like elements in a process, method, article or apparatus that comprises an element.
The following describes the technical scheme provided by the embodiment of the application in detail through the attached drawings.
The embodiment of the application provides a method for opening an encrypted file by a browser based on MV3, which mainly comprises the following steps as shown in fig. 1:
step 110, monitoring a preset opening action corresponding to a PDF file through an MV3 plug-in, and further obtaining a first URL address corresponding to the PDF file; and sending the first URL address to a preset secret-related terminal application.
The MV3 (Manifest V3) plug-in is an MV3 browser extension plug-in. The preset opening action at least comprises: double click action, right click action, drag action, and download open action. It should be noted that the preset opening action includes the above, but is not limited to the above, and may be increased according to the needs of those skilled in the art. The preset secret-related terminal application is any feasible terminal PC, terminal equipment or local terminal equipment capable of carrying out data transceiving and data processing.
The monitoring of the preset opening action corresponding to the PDF file through the MV3 plug-in unit can be specifically: monitoring a loading event of a tab in the browser through the MV3 plug-in to monitor whether a preset opening action exists in the loading event; and determining whether the loading event corresponds to the PDF file or not through a preset PDF file judging instruction, so as to monitor the preset opening action corresponding to the PDF file.
It should be noted that, the non-PDF files to be opened can be filtered from the loading events by the preset PDF file judgment instruction, so as to obtain loading events corresponding to all PDF files, and further realize monitoring of preset opening actions corresponding to PDF files. The preset PDF file judging instruction can be realized in a mode of limiting protocol file:///and PDF suffixes of the file.
The sending the URL address to the preset secret-related terminal application may specifically be: based on the HTTP communication protocol, the MV3 plug-in sends the URL address to a preset secret-related terminal application.
It should be noted that, in the present application, the communication protocol of MV3 plug-in and the preset secret related terminal application is an HTTP communication protocol.
Step 120, determining whether the PDF file is an encrypted file or not through presetting a secret-related terminal application; when the encrypted file is the encrypted file, obtaining the decryption user permission of the encrypted file and the login user permission of the current login user, decrypting the PDF file when the login user permission contains the decryption user permission, and returning a second URL address of the decryption PDF file to the MV3 plug-in; and rendering and displaying the decrypted PDF file corresponding to the second URL address based on a preset URL redirection rule in the MV3 plug-in.
When the file is not encrypted, the first URL address can be directly returned to the MV3 plugin through the preset confidential terminal application, so that the MV3 plugin renders and displays according to the first URL address. The method of rendering the display may be specifically a tab.
The decrypting user authority of the encrypted file in step 120 includes, but is not limited to, the authorized range of the file, the file security level, whether the file is read-only, etc.; the encrypted file can be opened by the browser only if the login user rights of the current login user contain (are higher than or equal to) the decryption user rights.
In addition, when the login user authority does not completely contain the decryption user authority, specific error content which does not contain the decryption user authority can be generated through presetting the secret-related terminal application, so that the specific error content is returned to the MV3 plug-in unit; and displaying the specific error content through a preset browser popup window.
The specific method of generating specific error contents that do not include the authority of the decrypting user may be implemented by existing methods or techniques, which the present application is not limited to.
The PDF file comprises a file header, and the file header comprises Json information for storing the authority of the decryption user.
Above-mentioned, through presetting the secret-related terminal application, confirm PDF file and be the encryption file, can be specifically: reading Json information corresponding to a PDF file through a preset confidential terminal application, and obtaining a decryption user right; determining whether the PDF file is an encrypted file according to the decrypting user authority; wherein decrypting the user right further comprises at least: whether the file is encrypted.
Wherein. Based on a preset URL redirection rule in the MV3 plug-in, rendering and displaying the decrypted PDF file corresponding to the second URL address, wherein the method specifically comprises the following steps:
redirecting the first URL address to a second URL address based on a preset URL redirection rule; calling an updateDynamicRules () method to realize the jump to the second URL address; and calling a tab.update () method to realize rendering and displaying the decrypted PDF file corresponding to the second URL address.
And 130, when the MV3 plug-in acquires the browsing closing action, the MV3 plug-in simultaneously sends a file deleting instruction to the preset confidential terminal application so as to enable the preset confidential terminal application to delete the decrypted PDF file.
It should be noted that, the method for acquiring the closing browsing action may be implemented by existing methods or technologies, which is not limited in this application.
In addition, fig. 2 is a system for opening an encrypted file by using a MV 3-based browser according to an embodiment of the present application. As shown in fig. 2, the system provided by the embodiment of the present application mainly includes:
the sending module 210 in the system monitors a preset opening action corresponding to the PDF file through the MV3 plug-in, and further obtains a first URL address corresponding to the PDF file; and sending the first URL address to a preset secret-related terminal application.
It should be noted that, the preset opening actions at least include: double click action, right click action, drag action, and download open action. The sending module 210 may be any feasible device or apparatus capable of acquiring the first URL address corresponding to the PDF file triggered to be opened.
The rendering module 220 in the system determines whether the PDF file is an encrypted file by presetting a secret-related terminal application; when the encrypted file is the encrypted file, obtaining the decryption user permission of the encrypted file and the login user permission of the current login user, decrypting the PDF file when the login user permission contains the decryption user permission, and returning a second URL address of the decryption PDF file to the MV3 plug-in; and rendering and displaying the decrypted PDF file corresponding to the second URL address based on a preset URL redirection rule in the MV3 plug-in.
It should be noted that, the rendering module 220 may be any feasible device or apparatus capable of redirecting, decrypting, rendering, displaying the encrypted PDF file.
When the MV3 plug-in acquires the browse closing action, the deleting module 230 in the system sends a file deleting instruction to the preset confidential terminal application at the same time, so that the preset confidential terminal application deletes the decrypted PDF file.
The deletion module 230 may be any feasible device or apparatus capable of presetting a decryption PDF file of the confidential terminal application to delete.
Thus far, the technical solution of the present disclosure has been described in connection with the foregoing embodiments, but it is easily understood by those skilled in the art that the protective scope of the present disclosure is not limited to only these specific embodiments. The technical solutions in the above embodiments may be split and combined by those skilled in the art without departing from the technical principles of the present disclosure, and equivalent modifications or substitutions may be made to related technical features, which all fall within the scope of the present disclosure.
Claims (8)
1. A method for opening an encrypted file by a MV 3-based browser, the method comprising:
monitoring a preset opening action corresponding to the PDF file through the MV3 plug-in, and further obtaining a first URL address corresponding to the PDF file; the first URL address is sent to a preset secret-related terminal application; the preset opening action at least comprises the following steps: double click action, right key action, drag action and download opening action;
determining whether the PDF file is an encrypted file or not through presetting a secret-related terminal application; when the encrypted file is the encrypted file, obtaining the decryption user permission of the encrypted file and the login user permission of the current login user, decrypting the PDF file when the login user permission contains the decryption user permission, and returning a second URL address of the decryption PDF file to the MV3 plug-in; rendering and displaying the decrypted PDF file corresponding to the second URL address based on a preset URL redirection rule in the MV3 plug-in;
when the MV3 plug-in acquires the browsing closing action, the MV3 plug-in simultaneously sends a file deleting instruction to the preset confidential terminal application so as to enable the preset confidential terminal application to delete the decrypted PDF file.
2. The method for opening an encrypted file by using a MV 3-based browser according to claim 1, wherein the monitoring of a preset opening action corresponding to the PDF file by using a MV3 plug-in specifically comprises:
monitoring a loading event of a tab in the browser through the MV3 plug-in to monitor whether a preset opening action exists in the loading event;
and determining whether the loading event corresponds to the PDF file or not through a preset PDF file judging instruction, so as to monitor the preset opening action corresponding to the PDF file.
3. The method for opening an encrypted file by a MV 3-based browser according to claim 1, wherein the PDF file comprises a header, and the header comprises Json information storing the authority of the decrypting user;
determining whether the PDF file is an encrypted file through presetting a secret-related terminal application specifically comprises the following steps:
reading Json information corresponding to a PDF file through a preset confidential terminal application, and obtaining a decryption user right; determining whether the PDF file is an encrypted file according to the decrypting user authority; wherein, the decrypting user right at least comprises: whether the file is encrypted.
4. The method for opening an encrypted file by using a MV 3-based browser according to claim 1, wherein the URL address is sent to a preset confidential terminal application, specifically comprising:
based on the HTTP communication protocol, the MV3 plug-in sends the URL address to a preset secret-related terminal application.
5. The method for opening an encrypted file according to claim 1, wherein after determining whether the PDF file is an encrypted file, the method further comprises:
and when the file is not encrypted, directly returning the first URL address to the MV3 plugin through a preset confidential terminal application, so that the MV3 plugin renders and displays according to the first URL address.
6. The method for opening an encrypted file by a MV 3-based browser according to claim 1, wherein after obtaining the decrypted user right of the encrypted file and the login user right of the current login user, the method further comprises:
when the login user permission does not contain the decryption user permission, generating specific error content which does not contain the decryption user permission through a preset secret-related terminal application, and returning the specific error content to the MV3 plug-in unit; and displaying the specific error content through a preset browser popup window.
7. The method for opening an encrypted file by using a MV 3-based browser according to claim 1, wherein the decrypted PDF file corresponding to the second URL address is rendered and displayed based on a preset URL redirection rule in the MV3 plug-in, specifically comprising:
redirecting the first URL address to a second URL address based on a preset URL redirection rule;
calling an updateDynamicRules () method to realize the jump to the second URL address;
and calling a tab.update () method to realize rendering and displaying the decrypted PDF file corresponding to the second URL address.
8. A system for opening an encrypted file by a MV 3-based browser, the system comprising:
the sending module is used for monitoring a preset opening action corresponding to the PDF file through the MV3 plug-in unit, and further obtaining a first URL address corresponding to the PDF file; the first URL address is sent to a preset secret-related terminal application; the preset opening action at least comprises the following steps: double click action, right key action, drag action and download opening action;
the rendering module is used for determining whether the PDF file is an encrypted file or not through presetting secret-related terminal application; when the encrypted file is the encrypted file, obtaining the decryption user permission of the encrypted file and the login user permission of the current login user, decrypting the PDF file when the login user permission contains the decryption user permission, and returning a second URL address of the decryption PDF file to the MV3 plug-in; rendering and displaying the decrypted PDF file corresponding to the second URL address based on a preset URL redirection rule in the MV3 plug-in;
and the deleting module is used for transmitting a file deleting instruction to the preset confidential terminal application at the same time when the MV3 plug-in acquires the browsing closing action, so that the preset confidential terminal application deletes the decrypted PDF file.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311264565.6A CN116992173B (en) | 2023-09-28 | 2023-09-28 | Method and system for opening encrypted file by browser based on MV3 |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311264565.6A CN116992173B (en) | 2023-09-28 | 2023-09-28 | Method and system for opening encrypted file by browser based on MV3 |
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| Publication Number | Publication Date |
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| CN116992173A CN116992173A (en) | 2023-11-03 |
| CN116992173B true CN116992173B (en) | 2023-12-15 |
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| CN202311264565.6A Active CN116992173B (en) | 2023-09-28 | 2023-09-28 | Method and system for opening encrypted file by browser based on MV3 |
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| CN104217173A (en) * | 2014-08-27 | 2014-12-17 | 武汉理工大学 | Method of encrypting data and files for browser |
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| CN116992173A (en) | 2023-11-03 |
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