CN102025490A - File segmental protection method, device and system - Google Patents
File segmental protection method, device and system Download PDFInfo
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- CN102025490A CN102025490A CN2009102594465A CN200910259446A CN102025490A CN 102025490 A CN102025490 A CN 102025490A CN 2009102594465 A CN2009102594465 A CN 2009102594465A CN 200910259446 A CN200910259446 A CN 200910259446A CN 102025490 A CN102025490 A CN 102025490A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L9/00—Cryptographic mechanisms or cryptographic arrangements for secret or secure communications; Network security protocols
- H04L9/32—Cryptographic mechanisms or cryptographic arrangements for secret or secure communications; Network security protocols including means for verifying the identity or authority of a user of the system or for message authentication, e.g. authorization, entity authentication, data integrity or data verification, non-repudiation, key authentication or verification of credentials
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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
- G06F21/62—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
Abstract
The embodiment of the invention discloses a file segmental protection method, which comprises the following content: setting a protection mark on the part to be protected in each segment of a file; when the file with protection marks are used, prompting a user of inputting a decryption key, or performing authentication; and if the decryption is correct or the user passes the authentication, allowing the protected parts of the file to be used or skipping or hiding the protected parts of the file. In addition, the embodiment of the invention also discloses a local file segmental protection system, a network streaming media file segmental protection system, and a streaming media server. When the scheme provided by the invention is used, the more flexible protection of file contents can be realized, and the needs of people for more accurate information encryption and authorization can be satisfied.
Description
Technical field
The present invention relates to the protection of digital product, relate in particular to a kind of method, Apparatus and system of file fragmentation protection.
Background technology
At present the protection majority of digital product is to encrypt or authorize at file-level, and the protection of this granularity is under some application scenarios and underaction.For example, for an audio-video document, may wish that shielding, so just need be to the content independent encryption of this part to the unsound plot of children; Perhaps, for a network flow-medium file, such as the video recording of one section meeting, the part that may only need protection involves the subject under discussion of security information; Perhaps, for the text of a digital publishing rights, the publisher may wish the different chapters and sections segmentation mandates in the file.
Be directed to the sectionalised protection of video file at present, common way is to increase picture (mosaic) on the legacy data frame, perhaps directly destroys legacy data; The problem that this way exists is to be difficult to the reduction or the initial data of at all can't reducing.
Be directed to the protection of network flow-medium file at present, common way is that media file is divided into different files, at the open different authority of different files, login earlier provided the website of media services when the user watched audio frequency and video, and the user who only has corresponding authority just can watch media file; The problem that this way exists is that maintenance is cumbersome, and user experience is also bad.
Summary of the invention
In order to satisfy more accurate information encryption of people and mandate demand, to realize file content is protected more flexibly, embodiments of the invention provide a kind of method, Apparatus and system of file fragmentation protection.
The method of a kind of file fragmentation protection that provides comprises following content:
Hereof every section part that needs protection is provided with protective emblem;
When use had the described file of protective emblem, the prompting user imported decruption key or carries out purview certification;
If deciphering is correct or purview certification passes through, then allows to use the part of protecting in the described file, otherwise skip or hide the part of protecting in the described file.
The sectionalised protection system of a kind of local file that provides comprises encryption device, decryption device and information display device, and wherein, described encryption device is used for the part that every section of local file needs protection is encrypted, and protective emblem and storage encryption password are set; Described decryption device is used for discerning the local file encryption section, and accepts the decruption key of user's input, encryption section in the deciphering local file; Described information display device, be used for showing local file unencryption part and decryption portion information, skip or hiding local file in the information of decryption portion not.
The sectionalised protection system of a kind of network flow-medium file that provides, comprise the control of authority device of local streaming medium playing device, streaming media server side and the media file transmitting device of streaming media server side, wherein, the control of authority device of described streaming media server side, be used for the media data block that every section of network flow-medium file needs protection is authorized, protective emblem is set; The media file transmitting device of described streaming media server side, be used for when transmission has the network flow-medium file of protective emblem, authorization portions in the recognition network files in stream media, and accept the purview certification information that the user imports, authorization portions in the authenticating network files in stream media; Described local streaming medium playing device is used for the Media Stream that playing network streaming media file user has the authority part, skips the Media Stream of user's lack of competence part in the network flow-medium file.
A kind of streaming media server that provides comprises: the control of authority device, be used for the media data block that every section of network flow-medium file needs protection is authorized, and protective emblem is set; The media file transmitting device is used for when transmission has the network flow-medium file of protective emblem, authorization portions in the recognition network files in stream media, and accept the purview certification information that the user imports, authorization portions in the authenticating network files in stream media.
By above technical scheme as can be known, by hereof every section part that needs protection being provided with protective emblem, when using this to have the described file of protective emblem, the prompting user imports decruption key or carries out purview certification, have only the correct or purview certification of deciphering to pass through, just allow to use the part of protecting in the described file, otherwise skip or hide the part of protecting in the described file; Compared with prior art, need not to destroy original file content, also need not file division is become different files, can satisfy more accurate information encryption of people and mandate demand, realize file content is protected more flexibly.
Description of drawings
In order to be illustrated more clearly in the technical scheme in the embodiment of the invention, the accompanying drawing of required use is done an introduction simply in will describing embodiment below.
The flow chart of a kind of file fragmentation guard method that Fig. 1 provides for embodiments of the invention;
The pie graph of the sectionalised protection system of a kind of local file that Fig. 2 provides for embodiments of the invention;
The pie graph of the sectionalised protection system of a kind of network flow-medium file that Fig. 3 provides for embodiments of the invention.
Embodiment
For make purpose of the present invention, technical scheme, and advantage clearer, below in conjunction with the accompanying drawing embodiment that develops simultaneously, technical scheme provided by the invention is described in further detail.
Referring to accompanying drawing 1, the method for a kind of file fragmentation protection that embodiments of the invention provide comprises following content:
11, hereof every section part that needs protection is provided with protective emblem;
12, when using the described file have protective emblem, the prompting user imports decruption key or carries out purview certification;
13, if deciphering is correct or purview certification passes through, then allow to use the part of protecting in the described file, otherwise skip or hide the part of protecting in the described file.
The method of the file fragmentation protection that present embodiment provides, by hereof every section part that needs protection being provided with protective emblem, when using this to have the described file of protective emblem, the prompting user imports decruption key or carries out purview certification, have only the correct or purview certification of deciphering to pass through, just allow to use the part of protecting in the described file, otherwise skip or hide the part of protecting in the described file; Compared with prior art, need not to destroy original file content, also need not file division is become different files, can satisfy more accurate information encryption of people and mandate demand, realize file content is protected more flexibly.
The method of the file fragmentation protection that embodiments of the invention is provided at different file types is done more specific description below.
Embodiment one, the local media file
At present popular video file generally is to be that the data block of unit is stored with the frame on file format, such as avi, mpeg; Audio file generally is to be that the data block of least unit is stored with the sampled point, such as wav, mp3.
For sound, video file are carried out accurate sectionalised protection, can increase a protective emblem to the data block of each least unit, certainly in order to reduce memory space, also can allow a plurality of data blocks share a protective emblem.This protective emblem memory location physically can be independent of original media file, such as increasing an independent CompanionFile; Also can be kept in original media file; such as some media file itself is the index structure of preserving data block; every frame data all have the index data piece in the file as avi2.0, for this class media file, protective emblem can be placed in this index block.
In the process that the local media file is play, the user can select every section media data block that needs protection is encrypted, and the input Crypted password, the key of the password of this user's input during as deciphering.Can the write direct media file of current broadcast of the file of encrypting also can generate an independently media file separately.Every section encrypted data can be shared a Crypted password, also can use independently Crypted password.If use unified Crypted password, the user only need import Crypted password when encrypting first segment of media data so.
When playing through the encrypted media file; need to judge whether the current media piece is encrypted earlier; if encrypted then point out the user to import decruption key; if deciphering correctly then play the protected media data block of this section, if decryption error then stop to play or directly skipping the protected media data block of this section.Need to prove that for video data, if frame-skipping is play, requiring first frame data must be the I frame, this just requires every section media data block that needs protection newly-generated I frame after encrypting end.
Above-mentioned when playing through the encrypted media file; may have some flexible schemes in the specific implementation; such as finding is the words of encrypt file; when just beginning to play, just require the user to input password; in playing process, do not reresent the user; in order to avoid the interference user viewing experience, the variant in the scheme specific implementation process also belongs to the protection range of this patent.
Embodiment two, the network flow-medium file
Current media data (for example sound, video data) are to transmit with the form of Streaming Media mostly on network.So-called Streaming Media is meant the media formats that the mode of employing stream transmission is play at Internet.Streaming Media is streaming video again, and common application is: businessman transmits server with audio frequency and video and becomes the program dismounting packet to send, and is sent on the network; The user is reduced into audio/video program after by decompression apparatus these data being carried out decompress(ion).
Sectionalised protection process to Streaming Media is consistent with the local media file substantially, and only these reciprocal processes are transmitted by network message.Difference mainly comprises following several aspect:
(1) control of authority between DST PLAYER and the streaming media server is that (Real Time Streaming Protocol RTSP) waits the Streaming Media control protocol to finish by real time streaming transport protocol; Media file between DST PLAYER and the streaming media server read be by RTP (Real-timeTransportProtocol, RTP) or transport stream (Transport Stream, TS) etc. control protocol is finished.
(2) because media file is kept at the streaming media server side, local user and can not directly opening, so streaming media server can not carry out real data encryption to media file, and only the record protection sign gets final product.That is to say for files in stream media more to lay particular emphasis on control to user right, rather than to the encryption of data itself.
(3) in the process of reality operation; can use more responsible user management strategy to carry out purview certification; to every section media data block that needs protection; perhaps be awarded identical authority or be awarded different authorities; that is to say protective emblem can be classification other, the user who has only purview certification to pass through just can check protected part.
To sum up, when the sectionalised protection of realizing the network flow-medium file, the streaming media server side is at first authorized every section media data block that needs protection, and protective emblem is set; When carrying out media flow transmission, if find to have protective emblem in the Media Stream, then by Media Stream control protocol (can be expansion RTSP message), the prompting DST PLAYER carries out purview certification; The user will input purview certification information such as user name, password and send to streaming media server; After the streaming media server authentication is passed through, send the contents of media files of protection part; If authentication is not passed through, then can directly skip the contents of media files of protection part.Therefore the method by present embodiment can satisfy the more accurate mandate demand of people, disposes more commercial the application, realizes the network flow-medium file is protected more flexibly.
Need to prove that above-mentioned purview certification information can be passed through Media Stream control protocol message transmissions in playing process, also can be that the mode of just having logined by the user before played file writes down.
Embodiment three, text
Text normally with the format organization of chapters and sections, paragraph together.Can increase protective emblem at different chapters and sections, the paragraph of text, its implementation and local media file are similar substantially.
Mainly be with the difference of local media file process: the demonstration of protected text data piece.Because text is not stream-oriented file, generally just all is presented on the reader when opening; Therefore need hide the part of protection, for example can increase a special encryption identification, and identify and activate decrypting process by triggering this in the zone of encrypting.If the text data piece that shows this protection if deciphering is correct is decryption error then continue to hide the text data piece of this protection.
In addition, need to prove, can carry out with reference to the above embodiments one, two and three sectionalised protection of multimedia file.Multimedia file generally is meant the file type that multiple different document form (mainly referring to media file and text form) is combined.In sectionalised protection process,, then adopt the foregoing description one or two protected mode to carry out, if textual form then adopts the protected mode of the foregoing description three to carry out if media file is encrypted to multimedia file.
Certainly, the user also can select the specific medium form in the multimedia file is carried out the batch protection, the user can select overall specific medium after opening multimedia file, carry out encryption or authorisation process by system searching all respective media types in the file; The user is directed to different media formats and deciphers accordingly or purview certification when reading encrypted multimedia file.
The method embodiment of the file fragmentation protection that provides based on the invention described above, embodiments of the invention provide a kind of sectionalised protection system of local file, referring to accompanying drawing 2, comprise encryption device 21, decryption device 22 and information display device 23, wherein,
Described encryption device 21 is used for the data block that every section of local file needs protection is encrypted, and protective emblem and storage encryption password are set;
Described decryption device 22 is used for discerning the local file encryption section, and accepts the decruption key of user's input, encryption section in the deciphering local file;
Described information display device 23, be used for showing local file unencryption part and decryption portion information, skip or hiding local file in the information of decryption portion not.
Local file can comprise the media file and the text of sound, video.As shown in Figure 2, to every section media data block of media file or to every section text data piece of text, carry out encryption by encryption device 21, protective emblem and the storage Crypted password by user's appointment is set, and protective emblem and Crypted password all can be left in original local file usually; When broadcast has the media file of protective emblem or opens the text that has protective emblem,, and accept the decruption key that the user imports, encryption section in the declassified document by those encryption sections in the decryption device 22 identification files; If deciphering is correct, then play or the text data piece of protection shown by the media data block of 23 pairs of protections of information display device, otherwise only the information of unencryption part in the display file, skip or hidden file in the information of decryption portion not.Therefore, can satisfy the more accurate information encryption of people, realize file content is protected more flexibly.
The sectionalised protection system of above-mentioned whole local file, this comprises encryption device 21, decryption device 22 and information display device 23, can be deployed in respectively independently on the physical equipment, perhaps integrates.But this not necessarily, and system's part all assembled schemes geographically all belong to the protection range of this patent.
The method embodiment of the file fragmentation protection that provides based on the invention described above, embodiments of the invention also provide a kind of sectionalised protection system and a kind of streaming media server of network flow-medium file.
Referring to accompanying drawing 3, the sectionalised protection system of the network flow-medium file that provides comprise the media file transmitting device 32 of the control of authority device 31 of streaming media server side, streaming media server side and local streaming medium playing device 33,, wherein,
The control of authority device 31 of described streaming media server side is used for the media data block that every section of network flow-medium file needs protection is authorized, and protective emblem is set;
The media file transmitting device 32 of described streaming media server side, be used for when transmission has the network flow-medium file of protective emblem, authorization portions in the recognition network files in stream media, and accept the purview certification information that the user imports, authorization portions in the authenticating network files in stream media;
Described local streaming medium playing device 33 is used for the Media Stream that playing network streaming media file user has the authority part, skips the Media Stream of user's lack of competence part in the network flow-medium file.
Still referring to accompanying drawing 3, the streaming media server that provides comprises:
Control of authority device 31 is used for the media data block that every section of network flow-medium file needs protection is authorized, and protective emblem is set;
Media file transmitting device 32 is used for when transmission has the network flow-medium file of protective emblem, authorization portions in the recognition network files in stream media, and accept the purview certification information that the user imports, authorization portions in the authenticating network files in stream media.
As previously mentioned; files in stream media more lays particular emphasis on the control to user right, rather than to the encryption of data itself, therefore different with local file is; streaming media server can not carry out real data encryption to media file, and only the record protection sign gets final product.And to every section media data block that needs protection, control of authority device 31 or authorize identical authority or authorize different authorities can be that the branch rank is protected, and the user who has only purview certification to pass through just can check protected part.Therefore, can satisfy the more accurate mandate demand of people, realization convection current contents of media files is protected more flexibly.
Need to prove that at last each functional unit in the embodiment of the invention can be integrated in the processing module, also can be that the independent physics in each unit exists, and also can be integrated in the module two or more unit.Above-mentioned integrated module both can adopt the form of hardware to realize, also can adopt the form of software function module to realize.If described integrated module realizes with the form of software function module and during as independently production marketing or use, also can be stored in the computer read/write memory medium.The above-mentioned storage medium of mentioning can be a read-only memory, disk or CD etc.
Above-mentioned specific embodiment is not in order to restriction the present invention; for those skilled in the art; all under the prerequisite that does not break away from the principle of the invention, any modification of being done, be equal to replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (11)
1. the method for a file fragmentation protection is characterized in that, comprising:
Hereof every section part that needs protection is provided with protective emblem;
When use had the described file of protective emblem, the prompting user imported decruption key or carries out purview certification;
If deciphering is correct or purview certification passes through, then allows to use the part of protecting in the described file, otherwise skip or hide the part of protecting in the described file.
2. the method for file fragmentation protection as claimed in claim 1 is characterized in that to the local media file, described method is specially:
Every section media data block that needs protection is encrypted, protective emblem and storage encryption password are set;
When broadcast had the described local media file of protective emblem, the prompting user imported decruption key;
If deciphering is correct then play the media data block of described protection, if decryption error then skip the media data block of described protection.
3. the method for file fragmentation protection as claimed in claim 1 is characterized in that to the network flow-medium file, described method is specially:
Every section media data block that needs protection is authorized, protective emblem is set;
When transmission has the described network flow-medium file of protective emblem, carry out purview certification by the Media Stream control protocol or by user's login mode prompting user;
If purview certification by send the media data block of described protection, if purview certification not by skip the media data block of described protection.
4. the method for file fragmentation protection as claimed in claim 1 is characterized in that to text, described method is specially:
Every section text data piece that needs protection is encrypted, protective emblem and storage encryption password are set;
When opening the described text that has protective emblem, hide the text data piece of described protection, and the prompting user activates decrypting process;
If the text data piece that shows described protection if deciphering is correct is decryption error then hide the text data piece of described protection.
5. as the method for the arbitrary described file fragmentation protection of claim 1-4, it is characterized in that, described protective emblem or be independent of original file and preserve, or be kept in original file.
6. as the method for claim 2 or 4 described file fragmentation protections, it is characterized in that every section described media data block that needs protection or text data piece are perhaps shared a Crypted password or used independently Crypted password.
7. the method for file fragmentation protection as claimed in claim 3 is characterized in that every section the described media data block that needs protection perhaps is awarded identical authority or is awarded different authorities.
8. the sectionalised protection system of a local file is characterized in that, comprises encryption device, decryption device and information display device, wherein,
Described encryption device is used for the part that every section of local file needs protection is encrypted, and protective emblem and storage encryption password are set;
Described decryption device is used for discerning the local file encryption section, and accepts the decruption key of user's input, encryption section in the deciphering local file;
Described information display device, be used for showing local file unencryption part and decryption portion information, skip or hiding local file in the information of decryption portion not.
9. the sectionalised protection system of local file as claimed in claim 8 is characterized in that, described encryption device, decryption device and information display device perhaps are deployed in respectively independently on the physical equipment, perhaps integrate.
10. the sectionalised protection system of a network flow-medium file is characterized in that, comprises the control of authority device of local streaming medium playing device, streaming media server side and the media file transmitting device of streaming media server side, wherein,
The control of authority device of described streaming media server side is used for the media data block that every section of network flow-medium file needs protection is authorized, and protective emblem is set;
The media file transmitting device of described streaming media server side, be used for when transmission has the network flow-medium file of protective emblem, authorization portions in the recognition network files in stream media, and accept the purview certification information that the user imports, authorization portions in the authenticating network files in stream media;
Described local streaming medium playing device is used for the Media Stream that playing network streaming media file user has the authority part, skips the Media Stream of user's lack of competence part in the network flow-medium file.
11. a streaming media server is characterized in that, comprising:
The control of authority device is used for the media data block that every section of network flow-medium file needs protection is authorized, and protective emblem is set;
The media file transmitting device is used for when transmission has the network flow-medium file of protective emblem, authorization portions in the recognition network files in stream media, and accept the purview certification information that the user imports, authorization portions in the authenticating network files in stream media.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009102594465A CN102025490A (en) | 2009-12-18 | 2009-12-18 | File segmental protection method, device and system |
| PCT/CN2010/079817 WO2011072607A1 (en) | 2009-12-18 | 2010-12-15 | File segmented protection method, apparatus and system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009102594465A CN102025490A (en) | 2009-12-18 | 2009-12-18 | File segmental protection method, device and system |
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| CN102025490A true CN102025490A (en) | 2011-04-20 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2009102594465A Pending CN102025490A (en) | 2009-12-18 | 2009-12-18 | File segmental protection method, device and system |
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| CN (1) | CN102025490A (en) |
| WO (1) | WO2011072607A1 (en) |
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| CN104899753B (en) * | 2015-06-19 | 2019-08-13 | 李笑晨 | Local ciphertext embedded internet information trading system |
| WO2016206485A1 (en) * | 2015-06-24 | 2016-12-29 | 腾讯科技（深圳）有限公司 | Multimedia file processing method and apparatus |
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| CN106060604A (en) * | 2016-06-28 | 2016-10-26 | 暴风集团股份有限公司 | Method and system for realizing digital rights management play based on BHD file |
| CN108024144A (en) * | 2017-11-28 | 2018-05-11 | 网宿科技股份有限公司 | Video broadcasting method, terminal and computer-readable recording medium |
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| CN109272602A (en) * | 2018-08-29 | 2019-01-25 | 百度在线网络技术（北京）有限公司 | Method for recording, device, equipment and the storage medium of unmanned car data |
| CN109272602B (en) * | 2018-08-29 | 2021-12-28 | 百度在线网络技术（北京）有限公司 | Unmanned vehicle data recording method, device, equipment and storage medium |
| WO2021197154A1 (en) * | 2020-03-31 | 2021-10-07 | 维沃移动通信有限公司 | Audio processing method, server, electronic device and computer-readable storage medium |
| CN112416450A (en) * | 2020-06-05 | 2021-02-26 | 上海哔哩哔哩科技有限公司 | Resource encryption and display method and system |
| WO2021244020A1 (en) * | 2020-06-05 | 2021-12-09 | 上海哔哩哔哩科技有限公司 | Resource encryption and display method and system |
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| WO2011072607A1 (en) | 2011-06-23 |
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