CN106446608A - Copyright protection method and system for Epub (electronic publication) document - Google Patents
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- CN106446608A CN106446608A CN201510471209.0A CN201510471209A CN106446608A CN 106446608 A CN106446608 A CN 106446608A CN 201510471209 A CN201510471209 A CN 201510471209A CN 106446608 A CN106446608 A CN 106446608A
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- 238000000034 method Methods 0.000 title claims abstract description 38
- 230000006835 compression Effects 0.000 claims description 12
- 238000007906 compression Methods 0.000 claims description 12
- 230000006837 decompression Effects 0.000 claims description 3
- 230000000712 assembly Effects 0.000 abstract description 14
- 238000000429 assembly Methods 0.000 abstract description 14
- 238000010586 diagram Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 2
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- 238000009792 diffusion process Methods 0.000 description 1
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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
- G06F21/10—Protecting distributed programs or content, e.g. vending or licensing of copyrighted material ; Digital rights management [DRM]
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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
- G06F21/62—Protecting access to data via a platform, e.g. using keys or access control rules
- G06F21/6209—Protecting access to data via a platform, e.g. using keys or access control rules to a single file or object, e.g. in a secure envelope, encrypted and accessed using a key, or with access control rules appended to the object itself
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F2221/00—Indexing scheme relating to security arrangements for protecting computers, components thereof, programs or data against unauthorised activity
- G06F2221/21—Indexing scheme relating to G06F21/00 and subgroups addressing additional information or applications relating to security arrangements for protecting computers, components thereof, programs or data against unauthorised activity
- G06F2221/2107—File encryption
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Abstract
The invention provides a copyright protection method for an Epub document, and a copyright protection system for the Epub document. The copyright protection method for the Epub document includes: acquiring a first content assembly in a first Epub document; encrypting the first content assembly to form a second content assembly; compressing the second content assembly to form a second Epub document, wherein the first content assembly includes all the content assemblies in the first Epub document, and the second content assembly includes all the content assemblies of the encrypted first content document. The technical scheme can protect the copyright of the Epub document, ensure the security of the Epub document, improve the analysis efficiency of the Epub document, and can greatly improve the processing speed and the security of reading software.
Description
Technical Field
The invention relates to the technical field of digital copyright protection, in particular to a copyright protection method and a copyright protection system for an Epub document.
Background
With the rapid development of mobile devices, the reading requirements of intelligent portable devices are also greatly increased. The publishing company or journal agency has a large amount of book and journal data resources, and in order to meet the reading requirement of the mobile device, the data resources are usually converted into an Epub (Electronic Publication) format, and Epub is a free open standard format, so that in order to prevent the unlimited and unconditional diffusion of the resources, protect the rights and interests of authors and publishing enterprises or journal agencies, measures such as encryption and the like for copyright protection of Epub documents are urgently needed.
Currently, in the prior art, file-level encryption is often adopted for Epub encryption, that is, Epub is encrypted as a whole, and when such Epub documents are analyzed, the documents need to be decrypted as a whole and then read. Although the encryption method has a certain protection effect on the Epub document, the encryption method has some disadvantages: firstly, when reading, a complete place document exists in a local temporary directory, and a user who slightly knows the technology can conveniently take out an unencrypted Epub document, so that the safety factor is low; secondly, all contents in the Epub document need to be decrypted during reading, so that the efficiency is low.
Therefore, how to protect the copyright of the Epub document, ensure the security of the Epub document, and improve the parsing efficiency of the Epub document, so as to improve the processing speed and the security of reading software becomes a problem to be solved urgently.
Disclosure of Invention
Based on the problems, the invention provides a novel technical scheme for protecting the copyright of the Epub document, which can protect the copyright of the Epub document, ensure the safety of the Epub document, improve the analysis efficiency of the Epub document and further greatly improve the processing speed and the safety of reading software.
In view of this, the present invention provides a new technical method for protecting copyright of Epub document, including: acquiring a first content component in a first Epub document; encrypting the first content component to form a second content component; compressing the second content component to form a second Epub document; wherein the first content component comprises all content components in the first Epub document and the second content component comprises all content components in the encrypted first Epub document.
According to the technical scheme, the first content assembly in the first Epub document is obtained firstly, the obtained first content assembly is encrypted to form the second content assembly, then the second content assembly is compressed to form the second Epub document, wherein the first content assembly comprises all the content assemblies in the first Epub document, the second content assembly comprises all the content assemblies in the encrypted first Epub document, through the process, the respective encryption of all the content assemblies in the Epub document is achieved, and therefore the security of the encrypted Epub document is ensured.
In the foregoing technical solution, preferably, the obtaining the first content component in the first Epub document specifically includes: decompressing the first Epub document, storing the first content component in a specified directory; traversing the first content component in the specified directory to obtain a target content component; and storing the first content component in the specified directory into a corresponding container according to the target content component so as to encrypt the first Epub document.
According to the technical scheme, the first Epub document is firstly decompressed to obtain the first content component, the first content component comprises all subfolders (namely all content components) generated after the first Epub document is decompressed, the subfolders comprise but are not limited to documents with postfix names such as html, jpg, css, opf, ncx and the like, and the first Epub document is respectively encrypted by storing the first content component into the corresponding container, so that the safety of the Epub document is effectively ensured.
In the foregoing technical solution, preferably, encrypting the first content component to form the second content component specifically includes: encrypting the first content component in the corresponding container; additional information is set for the first content component, and the second content component is formed to form the second Epub document for compression of the second content component.
In the technical scheme, any encryption algorithm can be adopted to encrypt the first content component, the encryption algorithm can be a stream cipher and a block cipher, common general encryption algorithms such as AES, DES and RC series are all suitable for the method, and certainly, the encryption method can also be customized; the key can adopt a designated key, but not limited to, and can also be bound with the equipment serial number and the like, and through the encryption process, the document can be ensured to be opened in the designated equipment, so that the security of the document is greatly improved; meanwhile, the additional information is set for the first content assembly, so that the compressed file is convenient to identify, and the processing speed of the reading software is further improved.
In the above technical solution, preferably, the method further includes: and acquiring a format description file in the first Epub document.
According to the technical scheme, the format description file in the acquired first Epub document is not encrypted, and necessary precondition guarantee is provided for the reading software to directly analyze the document in the memory.
In the above technical solution, preferably, the additional information is set for the format description file; compressing the format description file and the second content component with the additional information to form the second Epub document; wherein the additional information includes: reading time limit, reading times and encryption identification.
In this embodiment, the additional information includes, but is not limited to: reading time limit, reading times and encryption identification. By adding additional information to the format description file and the second content assembly, the copyright protection degree of the Epub document is further improved, and meanwhile, reading software can be effectively guaranteed to analyze the document directly in a memory, so that the analyzing efficiency of the decrypted Epub document is improved, and the processing speed of the reading software is greatly improved.
According to another aspect of the present invention, there is also provided a copyright protection system for an Epub document, including: the acquisition module is used for acquiring a first content component in the first Epub document; an encryption module to encrypt the first content component to form a second content component; a compression module to compress the second content component to form a second Epub document; wherein the first content component comprises all content components in the first Epub document and the second content component comprises all content components in the encrypted first Epub document.
According to the technical scheme, the first content assembly in the first Epub document is obtained firstly, the obtained first content assembly is encrypted to form the second content assembly, then the second content assembly is compressed to form the second Epub document, wherein the first content assembly comprises all the content assemblies in the first Epub document, the second content assembly comprises all the content assemblies in the encrypted first Epub document, through the process, the respective encryption of all the content assemblies in the Epub document is achieved, and therefore the security of the encrypted Epub document is ensured.
In the above technical solution, preferably, the obtaining module includes: the decompression module is used for decompressing the first Epub document and storing the first content assembly into a specified directory; the traversal module is used for traversing the first content assembly in the specified directory to obtain a target content assembly; a storage module, configured to store the first content component in the specified directory into a corresponding container according to the target content component, so as to encrypt the first Epub document.
According to the technical scheme, the first Epub document is firstly decompressed to obtain the first content component, the first content component comprises all subfolders (namely all content components) generated after the first Epub document is decompressed, the subfolders comprise but are not limited to documents with postfix names such as html, jpg, css, opf, ncx and the like, and the first Epub document is respectively encrypted by storing the first content component into the corresponding container, so that the safety of the Epub document is effectively ensured.
In the foregoing technical solution, preferably, the encryption module is specifically configured to: encrypting the first content component in the corresponding container; additional information is set for the first content component, and the second content component is formed to form the second Epub document for compression of the second content component.
In the technical scheme, any encryption algorithm can be adopted to encrypt the first content component, the encryption algorithm can be a stream cipher and a block cipher, common general encryption algorithms such as AES, DES and RC series are all suitable for the method, and certainly, the encryption method can also be customized; the key can adopt a designated key, but not limited to, and can also be bound with the equipment serial number and the like, and through the encryption process, the document can be ensured to be opened at the designated equipment, so that the security of the document is greatly improved; meanwhile, the additional information is set for the first content assembly, so that the compressed file is convenient to identify, and the processing speed of the reading software is further improved.
In the foregoing technical solution, preferably, the obtaining module is further configured to: and acquiring a format description file in the first Epub document.
According to the technical scheme, the format description file in the acquired first Epub document is not encrypted, and necessary precondition guarantee is provided for the reading software to directly analyze the document in the memory.
In the above technical solution, preferably, the method further includes: the setting module is used for setting the additional information for the format description file; and the compression module is specifically configured to: compressing the format description file and the second content component with the additional information to form the second Epub document; wherein the additional information includes: reading time limit, reading times and encryption identification.
In this embodiment, the additional information includes, but is not limited to: reading time limit, reading times and encryption identification. By adding additional information to the format description file and the second content assembly, the copyright protection degree of the Epub document is further improved, and meanwhile, reading software can be effectively guaranteed to analyze the document directly in a memory, so that the analyzing efficiency of the decrypted Epub document is improved, and the processing speed of the reading software is greatly improved.
By the technical scheme, the copyright of the Epub document can be protected, the safety of the Epub document is ensured, the analysis efficiency of the Epub document is improved, and the processing speed and the safety of reading software are further greatly improved.
Drawings
Fig. 1 shows a flow chart diagram of a copyright protection method of an Epub document according to an embodiment of the present invention;
fig. 2 shows a schematic block diagram of a copyright protection system for an Epub document according to an embodiment of the present invention.
Detailed Description
So that the manner in which the above recited objects, features and advantages of the present invention can be understood in detail, a more particular description of the invention, briefly summarized above, may be had by reference to the embodiments thereof which are illustrated in the appended drawings. It should be noted that the embodiments and features of the embodiments of the present application may be combined with each other without conflict.
In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention, however, the present invention may be practiced in other ways than those specifically described herein, and therefore the scope of the present invention is not limited by the specific embodiments disclosed below.
Fig. 1 shows a flowchart illustrating a copyright protection method for an Epub document according to an embodiment of the present invention.
As shown in fig. 1, a copyright protection method for an Epub document according to an embodiment of the present invention includes: step 102, acquiring a first content component in a first Epub document; step 104, encrypting the first content assembly to form a second content assembly; step 106, compressing the second content component to form a second Epub document; wherein the first content component comprises all content components in the first Epub document and the second content component comprises all content components in the encrypted first Epub document.
According to the technical scheme, the first content assembly in the first Epub document is obtained firstly, the obtained first content assembly is encrypted to form the second content assembly, then the second content assembly is compressed to form the second Epub document, wherein the first content assembly comprises all the content assemblies in the first Epub document, the second content assembly comprises all the content assemblies in the encrypted first Epub document, through the process, the respective encryption of all the content assemblies in the Epub document is achieved, and therefore the security of the encrypted Epub document is ensured.
In the foregoing technical solution, preferably, the obtaining the first content component in the first Epub document specifically includes: decompressing the first Epub document, storing the first content component in a specified directory; traversing the first content component in the specified directory to obtain a target content component; and storing the first content component in the specified directory into a corresponding container according to the target content component so as to encrypt the first Epub document.
According to the technical scheme, the first Epub document is firstly decompressed to obtain the first content component, the first content component comprises all subfolders (namely all content components) generated after the first Epub document is decompressed, the subfolders comprise but are not limited to documents with postfix names such as html, jpg, css, opf, ncx and the like, and the first Epub document is respectively encrypted by storing the first content component into the corresponding container, so that the safety of the Epub document is effectively ensured.
In the foregoing technical solution, preferably, encrypting the first content component to form the second content component specifically includes: encrypting the first content component in the corresponding container; additional information is set for the first content component, and the second content component is formed to form the second Epub document for compression of the second content component.
In the technical scheme, any encryption algorithm can be adopted to encrypt the first content component, the encryption algorithm can be a stream cipher and a block cipher, common general encryption algorithms such as AES, DES and RC series are all suitable for the method, and certainly, the encryption method can also be customized; the key can adopt a designated key, but not limited to, and can also be bound with the equipment serial number and the like, and through the encryption process, the document can be ensured to be opened at the designated equipment, so that the security of the document is greatly improved; meanwhile, the additional information is set for the first content assembly, so that the compressed file is convenient to identify, and the processing speed of the reading software is further improved.
In the above technical solution, preferably, the method further includes: and acquiring a format description file in the first Epub document.
According to the technical scheme, the format description file in the acquired first Epub document is not encrypted, and necessary precondition guarantee is provided for the reading software to directly analyze the document in the memory.
In the above technical solution, preferably, the additional information is set for the format description file; compressing the format description file and the second content component with the additional information to form the second Epub document; wherein the additional information includes: reading time limit, reading times and encryption identification.
In this embodiment, the additional information includes, but is not limited to: reading time limit, reading times and encryption identification. By adding additional information to the format description file and the second content assembly, the copyright protection degree of the Epub document is further improved, and meanwhile, reading software can be effectively guaranteed to analyze the document directly in a memory, so that the analyzing efficiency of the decrypted Epub document is improved, and the processing speed of the reading software is greatly improved.
Fig. 2 shows a schematic block diagram of a copyright protection system for an Epub document according to an embodiment of the present invention.
As shown in fig. 2, a copyright protection system 200 of an Epub document according to an embodiment of the present invention includes: an obtaining module 202, configured to obtain a first content component in a first Epub document; an encryption module 204 for encrypting the first content component to form a second content component; a compression module 206 to compress the second content component to form a second Epub document; wherein the first content component comprises all content components in the first Epub document and the second content component comprises all content components in the encrypted first Epub document.
According to the technical scheme, the first content assembly in the first Epub document is obtained firstly, the obtained first content assembly is encrypted to form the second content assembly, then the second content assembly is compressed to form the second Epub document, wherein the first content assembly comprises all the content assemblies in the first Epub document, the second content assembly comprises all the content assemblies in the encrypted first Epub document, through the process, the respective encryption of all the content assemblies in the Epub document is achieved, and therefore the security of the encrypted Epub document is ensured.
In the foregoing technical solution, preferably, the obtaining module 202 includes: a decompression module 2022, configured to decompress the first Epub document and store the first content component in a specified directory; a traversal module 2024, configured to traverse the first content component in the specified directory to obtain a target content component; a storage module 2026, configured to store the first content component in the designated directory into a corresponding container according to the target content component, so as to encrypt the first Epub document.
According to the technical scheme, the first Epub document is firstly decompressed to obtain the first content component, the first content component comprises all subfolders (namely all content components) generated after the first Epub document is decompressed, the subfolders comprise but are not limited to documents with postfix names such as html, jpg, css, opf, ncx and the like, and the first Epub document is respectively encrypted by storing the first content component into the corresponding container, so that the safety of the Epub document is effectively ensured.
In the foregoing technical solution, preferably, the encryption module 204 is specifically configured to: encrypting the first content component in the corresponding container; additional information is set for the first content component, and the second content component is formed to form the second Epub document for compression of the second content component.
In the technical scheme, any encryption algorithm can be adopted to encrypt the first content component, the encryption algorithm can be a stream cipher and a block cipher, common general encryption algorithms such as AES, DES and RC series are all suitable for the method, and certainly, the encryption method can also be customized; the key can adopt a designated key, but not limited to, and can also be bound with the equipment serial number and the like, and through the encryption process, the document can be ensured to be opened at the designated equipment, so that the security of the document is greatly improved; meanwhile, the additional information is set for the first content assembly, so that the compressed file is convenient to identify, and the processing speed of the reading software is further improved.
In the foregoing technical solution, preferably, the obtaining module 202 is further configured to: and acquiring a format description file in the first Epub document.
According to the technical scheme, the format description file in the acquired first Epub document is not encrypted, and necessary precondition guarantee is provided for the reading software to directly analyze the document in the memory.
In the above technical solution, preferably, the method further includes: a setting module 208, configured to set the additional information for the format description file; and the compression module is specifically configured to: compressing the format description file and the second content component with the additional information to form the second Epub document; wherein the additional information includes: reading time limit, reading times and encryption identification.
In this embodiment, the additional information includes, but is not limited to: reading time limit, reading times and encryption identification. By adding additional information to the format description file and the second content assembly, the copyright protection degree of the Epub document is further improved, and meanwhile, reading software can be effectively guaranteed to analyze the document directly in a memory, so that the analyzing efficiency of the decrypted Epub document is improved, and the processing speed of the reading software is greatly improved.
The technical scheme of the invention is further explained by combining a specific embodiment, which specifically comprises the following steps:
step one, based on a windows operating system, a temporary directory is created by using a windows API.
Step two, decrypting the Epub document by using 7za, and decrypting all the internal files
And storing the container components in the temporary directory created in the step one.
Step three, creating a program module by using c + + and realizing the place under the folder by a recursion method
There is a traversal of the file. And creating a vector container, and storing all content documents in the vector container.
Step four, creating an encryption module, finishing the definition of an interface, and taking a secret key and an encryption document as a connection
Mouth parameters.
Step five, in the embodiment, the key which is actually needed to be transmitted is combined to perform encryption in the encryption module
And the secondary encryption is carried out, so that the secret key is further protected, and the security of the document is improved. In the present embodiment, the first and second electrodes are,
and encrypting by taking the transmitted key generation MD5 code as a key, and realizing an encryption algorithm in an RC mode.
Part of the code is as follows:
and step six, traversing the vector container by using an iterator, sequentially calling the encryption method realized in the step five for each file, and sequentially encrypting each content component.
And step seven, compressing the encrypted content assembly by using 7za to finish the generation of the encrypted Epub document.
Through the steps, the defects that in the prior art, the analysis efficiency of the decrypted Epub document is low, the safety is reduced and the like are effectively overcome, and the processing speed and the safety of reading software are greatly improved.
The technical scheme of the invention is described in detail in combination with the drawings, and the invention provides a novel technical scheme for protecting the copyright of the Epub document, so that the copyright of the Epub document can be protected, the safety of the Epub document is ensured, the parsing efficiency of the Epub document is improved, and the processing speed and the safety of reading software are further greatly improved.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. A method of copy right protection of an Epub document, comprising:
acquiring a first content component in a first Epub document;
encrypting the first content component to form a second content component;
compressing the second content component to form a second Epub document;
wherein the first content component comprises all content components in the first Epub document and the second content component comprises all content components in the encrypted first Epub document.
2. The method for protecting the copyright of the Epub document according to claim 1, wherein the obtaining the first content component in the first Epub document specifically includes:
decompressing the first Epub document, storing the first content component in a specified directory;
traversing the first content component in the specified directory to obtain a target content component;
and storing the first content component in the specified directory into a corresponding container according to the target content component so as to encrypt the first Epub document.
3. The method for copy protection of an Epub document as recited in claim 2, wherein encrypting the first content component to form the second content component comprises:
encrypting the first content component in the corresponding container;
additional information is set for the first content component, and the second content component is formed to form the second Epub document for compression of the second content component.
4. The method of copyright protection for an Epub document according to any one of claims 1 to 3, further comprising:
and acquiring a format description file in the first Epub document.
5. The copyright protection method for an Epub document as set forth in claim 4,
setting the additional information for the format description file;
compressing the format description file and the second content component with the additional information to form the second Epub document; wherein,
the additional information includes: reading time limit, reading times and encryption identification.
6. A copyright protection system for an Epub document, comprising:
the acquisition module is used for acquiring a first content component in the first Epub document;
an encryption module to encrypt the first content component to form a second content component;
a compression module to compress the second content component to form a second Epub document;
wherein the first content component comprises all content components in the first Epub document and the second content component comprises all content components in the encrypted first Epub document.
7. The copy protection system for an Epub document of claim 6, wherein the obtaining module includes:
the decompression module is used for decompressing the first Epub document and storing the first content assembly into a specified directory;
the traversal module is used for traversing the first content assembly in the specified directory to obtain a target content assembly;
a storage module, configured to store the first content component in the specified directory into a corresponding container according to the target content component, so as to encrypt the first Epub document.
8. The copy protection system for an Epub document of claim 7, wherein the encryption module is specifically configured to:
encrypting the first content component in the corresponding container;
additional information is set for the first content component, and the second content component is formed to form the second Epub document for compression of the second content component.
9. The copyright protection system for Epub documents according to any one of claims 6 to 8, wherein the obtaining module is further configured to:
and acquiring a format description file in the first Epub document.
10. The copy protection system for an Epub document of claim 9, further comprising:
the setting module is used for setting the additional information for the format description file; and
the compression module is specifically configured to:
compressing the format description file and the second content component with the additional information to form the second Epub document; wherein,
the additional information includes: reading time limit, reading times and encryption identification.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510471209.0A CN106446608A (en) | 2015-08-04 | 2015-08-04 | Copyright protection method and system for Epub (electronic publication) document |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510471209.0A CN106446608A (en) | 2015-08-04 | 2015-08-04 | Copyright protection method and system for Epub (electronic publication) document |
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| EP2813967A1 (en) * | 2012-02-08 | 2014-12-17 | Fasoo. Com Co., Ltd | Apparatus and method for managing digital copyright for epub-based content, and apparatus and method for providing epub-based content according to user authority |
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| CN101739391A (en) * | 2009-12-16 | 2010-06-16 | 彭扬 | Method for generating electronic book with binary file format and electronic book generated by same |
| EP2813967A1 (en) * | 2012-02-08 | 2014-12-17 | Fasoo. Com Co., Ltd | Apparatus and method for managing digital copyright for epub-based content, and apparatus and method for providing epub-based content according to user authority |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| WO2020103060A1 (en) * | 2018-11-21 | 2020-05-28 | 深圳市欢太科技有限公司 | Data processing method and apparatus, system, server, and electronic device |
| CN112889055A (en) * | 2018-11-21 | 2021-06-01 | 深圳市欢太科技有限公司 | Data processing method, device, system, server and electronic equipment |
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