CN104134046A - Encryption method and device - Google Patents
Encryption method and device Download PDFInfo
- Publication number
- CN104134046A CN104134046A CN201410367451.9A CN201410367451A CN104134046A CN 104134046 A CN104134046 A CN 104134046A CN 201410367451 A CN201410367451 A CN 201410367451A CN 104134046 A CN104134046 A CN 104134046A
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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
Abstract
The invention discloses an encryption method and device. The encryption method includes the steps that at least two encryption levels are defined, and corresponding relations between file attributes and the encryption levels are established; when files are encrypted, the attributes of the files are obtained, and the files are encrypted according to the corresponding relations between the file attributes and the encryption levels and the corresponding encryption levels. According to the encryption method, the encryption levels and the corresponding relations between the file attributes and the encryption levels are preset, and therefore the files with different attributes can be encrypted at different levels, enciphered data can be managed in a classified mode, management efficiency is improved, data safety is guaranteed.
Description
Technical field
The present invention relates to communication technical field, especially relate to a kind of encryption method and device.
Background technology
Along with developing rapidly of the communication technology, the transmission of information data is more and more convenient and swift, and approach and the scope of people's obtaining information are also more and more wider.Meanwhile, information is also more easily revealed, and the security of information becomes severeer.For the safety of guarantee information data, existing solution is that file is encrypted to protection, though outflow of document, other people data in also cannot file reading.
But when prior art is encrypted file, it is an encryption level that all encrypt files are all unified.And the data of storing in current terminal are more and more, its significance level is different, if unified, uses an encryption level, can make data corruption, and the efficiency of management is low, has reduced the security of data.
Summary of the invention
Fundamental purpose of the present invention is to provide a kind of encryption method and encryption device, is intended to realize enciphered data is carried out to Classification Management, improves the efficiency of management, guarantees data security.
To achieve these objectives, the present invention proposes a kind of encryption method, comprises step:
Define at least two kinds of encryption levels, and set up the corresponding relation of file attribute and encryption level;
During encrypt file, obtain the attribute of described file, and according to the corresponding relation of described file attribute and encryption level, with corresponding encryption level, described file is encrypted.
Preferably, described file attribute is file storage location, and the described corresponding relation of setting up file attribute and encryption level comprises: the corresponding relation of setting up file storage location and encryption level.
Preferably, described file attribute is file name, and the described corresponding relation of setting up file attribute and encryption level comprises: the corresponding relation of setting up file name and encryption level.
Preferably, described file attribute is file type, and the described corresponding relation of setting up file attribute and encryption level comprises: the corresponding relation of setting up file type and encryption level.
Preferably, described encryption level has three kinds, comprises that file header encryption, encrypted content file and file header and file content encrypt simultaneously.
The present invention proposes a kind of encryption device simultaneously, and comprise module and encrypting module are set, wherein:
Module is set, for defining at least two kinds of encryption levels, and sets up the corresponding relation of file attribute and encryption level;
Encrypting module, for obtaining the attribute of file, and according to the corresponding relation of described file attribute and encryption level, is encrypted described file with corresponding encryption level.
Preferably, described file attribute is file storage location, and the described module that arranges is for the corresponding relation of setting up file storage location and encryption level.
Preferably, described file attribute is file name, and the described module that arranges is for the corresponding relation of setting up file name and encryption level.
Preferably, described file attribute is file type, and the described module that arranges is for the corresponding relation of setting up file type and encryption level.
Preferably, described encryption level has three kinds, comprises that file header encryption, encrypted content file and file header and file content encrypt simultaneously.
A kind of encryption method provided by the present invention, by setting in advance the corresponding relation of encryption level and file attribute and encryption level, thereby can carry out to the file of different attribute the encryption of different stage, realized the Classification Management to enciphered data, improve the efficiency of management, guaranteed the safety of data.
Accompanying drawing explanation
Fig. 1 is the process flow diagram of encryption method the first embodiment of the present invention;
Fig. 2 is the process flow diagram of encryption method the second embodiment of the present invention;
Fig. 3 is the process flow diagram of encryption method of the present invention the 3rd embodiment;
Fig. 4 is the structured flowchart of encryption device one embodiment of the present invention.
The realization of the object of the invention, functional characteristics and advantage, in connection with embodiment, are described further with reference to accompanying drawing.
Embodiment
Should be appreciated that specific embodiment described herein, only in order to explain the present invention, is not intended to limit the present invention.
Encryption method of the present invention, first defines at least two kinds of encryption levels, and sets up the corresponding relation of file attribute and encryption level; During encrypt file, obtain the file attribute of file, and according to the corresponding relation of file attribute and encryption level, with corresponding encryption level, file is encrypted.Thereby, realize different files is carried out to Classification Management, guarantee data security.
Wherein, file attribute comprises the characteristic attributes such as file storage location, file name, file type.By specific embodiment, be elaborated below.
Referring to Fig. 1, encryption method the first embodiment of the present invention is proposed, described encryption method comprises the following steps:
Step S101: define at least two kinds of encryption levels
For example, can define three kinds of encryption levels, be respectively one-level encryption, secondary encryption and three grades of encryptions, wherein one-level is only encrypted file header is encrypted, secondary is encrypted file content is encrypted, and three grades of encryptions are encrypted file header and file content simultaneously.Or one-level is encrypted and used general secret key encryption, general authority user can decipher; Secondary is encrypted and is used intermediate secret key encryption, and intermediate authority user can decipher; Encrypt for three grades and use senior secret key encryption, super-ordinate right user can decipher.Certainly, as required, can also define more encryption level.
Step S102: the corresponding relation of setting up file storage location and encryption level
The present embodiment utilizes the file storage location in file attribute to set up corresponding relation with encryption level.
Concrete, file storage location can be the file at file place.In terminal, set up three files, be respectively first grade file folder, second grade file folder and three grades of files, wherein first grade file presss from both sides corresponding one-level encryption, and the corresponding secondary of second grade file is encrypted, three grades of corresponding three grades of encryptions of file.
And for example, file storage location can be the fdisk at file place.In terminal, have C, D, tri-fdisks of E, wherein C coils corresponding one-level encryption, and D coils corresponding secondary and encrypts, the corresponding three grades of encryptions of E dish.
Step S103: during encrypt file, obtain the memory location of file
Step S104: according to the corresponding relation of file storage location and encryption level, obtain corresponding encryption level
Step S105: file is encrypted with corresponding encryption level
For example, when needs carry out one-level encryption to file, can directly file be moved to by (or in C dish) in first grade file, terminal detects file and moves to after first grade file folder (or C dish), the corresponding relation of encrypting according to first grade file folder (or C dish) and one-level, carries out one-level to this document and encrypts.Or terminal detects user and set up new file in three grades of file, or change or while storing original file, according to the corresponding relation of three grades of files and three grades of encryptions, immediately to three grades of encryptions of this document execution.
Referring to Fig. 2, encryption method the second embodiment of the present invention is proposed, described encryption method comprises the following steps:
Step S201: define at least two kinds of encryption levels
Step S202: the corresponding relation of setting up file name and encryption level
The present embodiment utilizes the file name in file attribute to set up corresponding relation with encryption level.
Concrete, can be specific character " #1 ", " #2 ", " #3 " in file name, respectively corresponding one-level is encrypted, secondary is encrypted and three grades of encryptions; Or, the key word in file name " important ", " very important ", " extremely important ", respectively grade encryption of corresponding one-level to three.
Step S203: during encrypt file, obtain the title of file
Step S204: according to the corresponding relation of file name and encryption level, obtain corresponding encryption level
Step S205: file is encrypted with corresponding encryption level
For example, terminal detects user increases the file in character " #2 " or a newly-built title with character " #2 " in the title of a certain file, and the corresponding relation of encrypting according to character in file name " #2 " and secondary is carried out secondary to this document and encrypted; Or terminal detects user and stores having the file of character " #1 " in title, the corresponding relation of encrypting according to character in file name " #1 " and one-level, carries out one-level to this document and encrypts.
Referring to Fig. 3, encryption method of the present invention the 3rd embodiment is proposed, described encryption method comprises the following steps:
Step S301: define at least two kinds of encryption levels
Step S302: the corresponding relation of setting up file type and encryption level
The present embodiment utilizes the file type in file attribute to set up corresponding relation with encryption level, file type comprises text, multimedia file, application file etc., wherein text can be subdivided into again txt file, doc file, pdf file etc., and multimedia file can be subdivided into graphic file, recording file, video file etc. again.
Concrete, text can be set corresponding with one-level encryption, application file is corresponding with secondary encryption, and multimedia file is corresponding with three grades of encryptions; Or the doc file in text is corresponding with one-level encryption, the recording file in multimedia file is corresponding with secondary encryption, and the video file in multimedia file is corresponding with three grades of encryptions; Or the graphic file in multimedia file, recording file and video file are encrypted with one-level respectively, secondary is encrypted and three grades of encryptions are corresponding.
Step S303: during encrypt file, obtain the type of file
Step S304: according to the corresponding relation of file type and encryption level, obtain corresponding encryption level
Step S305: file is encrypted with corresponding encryption level
For example, when user's storage file, the type that terminal detects this document is text, according to the corresponding relation of text and one-level encryption, this document is carried out to one-level and encrypt; Or the type that this document detected is the recording file in multimedia file, according to the corresponding relation of recording file and secondary encryption, this document is carried out to secondary and encrypt.
Previous embodiment is all the corresponding a kind of encryption levels of a kind of file attribute, alternatively, and also comprehensive a kind of encryption level of two or more attributes correspondences.For example, can comprehensive file memory location and the corresponding a kind of encryption level of file type, specifically can be set to: file storage location is that D dish+file type is that the corresponding secondary of text is encrypted, and file storage location is that E dish+file type is the corresponding three grades of encryptions of multimedia file.
Thereby encryption method of the present invention, by setting in advance the corresponding relation of encryption level and file attribute and encryption level, thereby can carry out to the file of different attribute the encryption of different stage, realize the Classification Management to enciphered data, improved the efficiency of management, guaranteed the safety of data.
Referring to Fig. 4, encryption device one embodiment of the present invention is proposed, described encryption device comprises module and encrypting module is set.
Module is set: for defining at least two kinds of encryption levels, and set up the corresponding relation of file attribute and encryption level.
Concrete, can define three kinds of encryption levels, be respectively one-level encryption, secondary encryption and three grades of encryptions, wherein one-level is only encrypted file header is encrypted, secondary is encrypted file content is encrypted, and three grades of encryptions are encrypted file header and file content simultaneously.Or one-level is encrypted and used general secret key encryption, general authority user can decipher; Secondary is encrypted and is used intermediate secret key encryption, and intermediate authority user can decipher; Encrypt for three grades and use senior secret key encryption, super-ordinate right user can decipher.Certainly, as required, can also define more encryption level.
File attribute comprises the characteristic attributes such as file storage location, file name, file type.
Can utilize the file storage location in file attribute to come to set up corresponding relation with encryption level.File storage location can be the file at file place, module is set and sets up three files, be respectively first grade file folder, second grade file folder and three grades of files, and first grade file is set presss from both sides corresponding one-level and encrypt, the corresponding secondary of second grade file is encrypted, three grades of corresponding three grades of encryptions of file.File storage location can be also the fdisk at file place, for example, in device, have C, D, tri-fdisks of E, module is set and C is set coils corresponding one-level and encrypt, and D coils corresponding secondary and encrypts, the corresponding three grades of encryptions of E dish.
Also can utilize the file name in file attribute to come to set up corresponding relation with encryption level.Concrete, specific character " #1 ", " #2 ", " #3 " in file name can be set, respectively corresponding one-level is encrypted, secondary is encrypted and three grades of encryptions; Or, the key word in file name " important ", " very important ", " extremely important ", respectively grade encryption of corresponding one-level to three.
Can also utilize the file type in file attribute to come to set up corresponding relation with encryption level, file type comprises text, multimedia file, application file etc., wherein text can be subdivided into again txt file, doc file, pdf file etc., and multimedia file can be subdivided into graphic file, recording file, video file etc. again.Concrete, text can be set corresponding with one-level encryption, application file is corresponding with secondary encryption, and multimedia file is corresponding with three grades of encryptions; Or the doc file in text is corresponding with one-level encryption, the recording file in multimedia file is corresponding with secondary encryption, and the video file in multimedia file is corresponding with three grades of encryptions; Or the graphic file in multimedia file, recording file and video file are encrypted with one-level respectively, secondary is encrypted and three grades of encryptions are corresponding.
Alternatively, also can be comprehensively the corresponding a kind of encryption level of two or more attributes.For example, can comprehensive file memory location and the corresponding a kind of encryption level of file type, specifically can be set to: file storage location is that D dish+file type is that the corresponding secondary of text is encrypted, and file storage location is that E dish+file type is the corresponding three grades of encryptions of multimedia file.
Encrypting module: for file is encrypted.When encrypt file, obtain the attribute of file, and according to the corresponding relation of file attribute and encryption level, with corresponding encryption level, file is encrypted.
For example, when user need to carry out one-level encryption to file, can directly file be moved to by (or in C dish) in first grade file, encrypting module detects file and moves to after first grade file folder (or C dish), the corresponding relation of encrypting according to first grade file folder (or C dish) and one-level, carries out one-level to this document and encrypts.Or encrypting module detects user and set up new file in three grades of file, or change or while storing original file, according to the corresponding relation of three grades of files and three grades of encryptions, immediately to three grades of encryptions of this document execution.
And for example, encrypting module detects user increases the file in character " #2 " or a newly-built title with character " #2 " in the title of a certain file, the corresponding relation of encrypting according to character in file name " #2 " and secondary, carries out secondary to this document and encrypts; Or encrypting module detects user and stores having the file of character " #1 " in title, the corresponding relation of encrypting according to character in file name " #1 " and one-level, carries out one-level to this document and encrypts.
Or when user's storage file, the type that encrypting module detects this document is text, according to the corresponding relation of text and one-level encryption, this document is carried out to one-level and encrypt; Or the type that this document detected is the recording file in multimedia file, according to the corresponding relation of recording file and secondary encryption, this document is carried out to secondary and encrypt.
Technical characterictic in said method embodiment is all corresponding applicable at this device, no longer repeats here.
Accordingly, encryption device of the present invention, by setting in advance the corresponding relation of encryption level and file attribute and encryption level, thereby can carry out to the file of different attribute the encryption of different stage, realize the Classification Management to enciphered data, improved the efficiency of management, guaranteed the safety of data.
It should be noted that: the encryption device that above-described embodiment provides is when being encrypted, and only the division with above-mentioned each functional module is illustrated, in practical application, can as required above-mentioned functions be distributed and be completed by different functional modules.In addition, the encryption device that above-described embodiment provides and encryption method embodiment belong to same design, and its specific implementation process refers to embodiment of the method, repeats no more here.
One of ordinary skill in the art will appreciate that, realizing all or part of step in above-described embodiment method can control relevant hardware by program and complete, described program can be stored in a computer read/write memory medium, and described storage medium can be ROM/RAM, disk, CD etc.
With reference to the accompanying drawings of the preferred embodiments of the present invention, not thereby limit to interest field of the present invention above.Those skilled in the art do not depart from the scope and spirit of the present invention, and can have multiple flexible program to realize the present invention, such as the feature as an embodiment can be used for another embodiment, obtain another embodiment.Allly using any modification of doing within technical conceive of the present invention, be equal to and replace and improve, all should be within interest field of the present invention.
Claims (10)
1. an encryption method, is characterized in that, comprises step:
Define at least two kinds of encryption levels, and set up the corresponding relation of file attribute and encryption level;
During encrypt file, obtain the attribute of described file, and according to the corresponding relation of described file attribute and encryption level, with corresponding encryption level, described file is encrypted.
2. encryption method according to claim 1, is characterized in that, described file attribute is file storage location, and the described corresponding relation of setting up file attribute and encryption level comprises:
Set up the corresponding relation of file storage location and encryption level.
3. encryption method according to claim 1, is characterized in that, described file attribute is file name, and the described corresponding relation of setting up file attribute and encryption level comprises:
Set up the corresponding relation of file name and encryption level.
4. encryption method according to claim 1, is characterized in that, described file attribute is file type, and the described corresponding relation of setting up file attribute and encryption level comprises:
Set up the corresponding relation of file type and encryption level.
5. according to the encryption method described in claim 1-4 any one, it is characterized in that, described encryption level has three kinds, comprises that file header encryption, encrypted content file and file header and file content encrypt simultaneously.
6. an encryption device, is characterized in that, comprise module and encrypting module are set, wherein:
Module is set, for defining at least two kinds of encryption levels, and sets up the corresponding relation of file attribute and encryption level;
Encrypting module, for obtaining the attribute of file, and according to the corresponding relation of described file attribute and encryption level, is encrypted described file with corresponding encryption level.
7. encryption device according to claim 6, is characterized in that, described file attribute is file storage location, and the described module that arranges is for the corresponding relation of setting up file storage location and encryption level.
8. encryption device according to claim 6, is characterized in that, described file attribute is file name, and the described module that arranges is for the corresponding relation of setting up file name and encryption level.
9. encryption device according to claim 6, is characterized in that, described file attribute is file type, and the described module that arranges is for the corresponding relation of setting up file type and encryption level.
10. according to the encryption device described in claim 6-9 any one, it is characterized in that, described encryption level has three kinds, comprises that file header encryption, encrypted content file and file header and file content encrypt simultaneously.
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| CN201410367451.9A CN104134046B (en) | 2014-07-29 | 2014-07-29 | encryption method and device |
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| CN201410367451.9A CN104134046B (en) | 2014-07-29 | 2014-07-29 | encryption method and device |
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| CN104134046B CN104134046B (en) | 2017-03-29 |
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| CN105610665A (en) * | 2015-07-29 | 2016-05-25 | 哈尔滨工业大学（威海） | VPN protocol for mobile devices |
| CN105959648A (en) * | 2016-06-23 | 2016-09-21 | 浙江宇视科技有限公司 | Encryption method and device, and video monitoring system |
| CN106803030A (en) * | 2015-11-26 | 2017-06-06 | 阿里巴巴集团控股有限公司 | A kind of encryption and decryption method and device, user equipment |
| CN107168985A (en) * | 2017-03-21 | 2017-09-15 | 咪咕文化科技有限公司 | A kind of method and device of ambiguous file attribute information |
| CN108369579A (en) * | 2016-01-20 | 2018-08-03 | 微软技术许可有限责任公司 | Painting classifying content is painted on documentation section |
| CN108959941A (en) * | 2018-06-21 | 2018-12-07 | Oppo（重庆）智能科技有限公司 | Data ciphering method, device and electronic device |
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| CN110233847A (en) * | 2019-06-17 | 2019-09-13 | 长沙而道新能源科技有限公司 | New energy power station progress control method based on cloud monitoring and Data Encryption Transmission |
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| CN113194066A (en) * | 2021-03-25 | 2021-07-30 | 四川久远银海软件股份有限公司 | Mixed encryption method based on security level |
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| CN105069365A (en) * | 2015-06-30 | 2015-11-18 | 广东欧珀移动通信有限公司 | Data processing method and mobile terminal |
| CN105610665A (en) * | 2015-07-29 | 2016-05-25 | 哈尔滨工业大学（威海） | VPN protocol for mobile devices |
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| CN105306780A (en) * | 2015-11-11 | 2016-02-03 | 天津光电通信技术有限公司 | Notification system and notification method for file grading treatment |
| CN106803030A (en) * | 2015-11-26 | 2017-06-06 | 阿里巴巴集团控股有限公司 | A kind of encryption and decryption method and device, user equipment |
| CN108369579A (en) * | 2016-01-20 | 2018-08-03 | 微软技术许可有限责任公司 | Painting classifying content is painted on documentation section |
| CN108369579B (en) * | 2016-01-20 | 2022-12-20 | 微软技术许可有限责任公司 | Painting content classifications onto document parts |
| CN105959648A (en) * | 2016-06-23 | 2016-09-21 | 浙江宇视科技有限公司 | Encryption method and device, and video monitoring system |
| CN105959648B (en) * | 2016-06-23 | 2019-04-09 | 浙江宇视科技有限公司 | A kind of encryption method, device and video monitoring system |
| CN107168985A (en) * | 2017-03-21 | 2017-09-15 | 咪咕文化科技有限公司 | A kind of method and device of ambiguous file attribute information |
| CN108959941A (en) * | 2018-06-21 | 2018-12-07 | Oppo（重庆）智能科技有限公司 | Data ciphering method, device and electronic device |
| WO2020044095A1 (en) * | 2018-08-27 | 2020-03-05 | 优视科技新加坡有限公司 | File encryption method and apparatus, device, terminal, server, and computer-readable storage medium |
| CN109299611A (en) * | 2018-08-27 | 2019-02-01 | 优视科技新加坡有限公司 | File encrypting method, device, equipment/terminal/server and computer readable storage medium |
| CN110233847A (en) * | 2019-06-17 | 2019-09-13 | 长沙而道新能源科技有限公司 | New energy power station progress control method based on cloud monitoring and Data Encryption Transmission |
| CN110233847B (en) * | 2019-06-17 | 2022-02-22 | 广东鹰视能效科技有限公司 | New energy power station operation control method based on cloud monitoring and data encryption transmission |
| CN111859345A (en) * | 2020-07-28 | 2020-10-30 | 郑州奥腾网络科技有限公司 | Computer data safety storage system |
| WO2022048315A1 (en) * | 2020-09-03 | 2022-03-10 | 深圳市百富智能新技术有限公司 | File encryption method, terminal, apparatus, device, and medium |
| CN113194066A (en) * | 2021-03-25 | 2021-07-30 | 四川久远银海软件股份有限公司 | Mixed encryption method based on security level |
| CN113806797A (en) * | 2021-08-11 | 2021-12-17 | 珠海金山办公软件有限公司 | Document encryption method and device, storage medium and processor |
| CN113407934A (en) * | 2021-08-20 | 2021-09-17 | 博流智能科技（南京）有限公司 | Safe multi-firmware fusion system and multi-firmware fusion control method |
| CN113704794A (en) * | 2021-09-02 | 2021-11-26 | 国泰新点软件股份有限公司 | Bidding file processing method and device in electronic bidding system |
| CN113704794B (en) * | 2021-09-02 | 2023-09-26 | 国泰新点软件股份有限公司 | Bid file processing method and device in electronic bidding system |
| CN116150786A (en) * | 2023-01-10 | 2023-05-23 | 深圳技术大学 | USB flash disk file encryption system based on instruction key self-setting |
| CN116150786B (en) * | 2023-01-10 | 2023-11-28 | 深圳技术大学 | USB flash disk file encryption system based on instruction key self-setting |
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