CN100384272C - Media data protecting method and system - Google Patents
Media data protecting method and system Download PDFInfo
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- CN100384272C CN100384272C CNB2004100247477A CN200410024747A CN100384272C CN 100384272 C CN100384272 C CN 100384272C CN B2004100247477 A CNB2004100247477 A CN B2004100247477A CN 200410024747 A CN200410024747 A CN 200410024747A CN 100384272 C CN100384272 C CN 100384272C
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Abstract
The present invention relates to a medium data protecting method which is executed for a mobile communication terminal and a server. The mobile communication terminal and the server proceed with radio communication. Firstly, a medium downloading request is sent by the mobile communication terminal to be used for the request of downloading medium data. The server receives the medium downloading request; the server generates a description file, a medium protecting file and a copyright message file of the medium data according to the medium downloading request. The description file comprises downloading adresses of the medium protecting file and the copyright message file; the medium protecting file comprises the encrypted medium data; the copyright message file comprises a decryption golden key used for decoding the medium protecting file. In the server, the description file is conveyed to the mobile communication terminal; in the mobile communication terminal, the description file is received from the server.
Description
Technical field
The present invention is relevant for communication terminal, and is particularly to the media protection of communication terminal and the method and system of download.
Background technology
Traditionally, mobile phone can utilize super literal transfer protocol (Hypertext TransmissionProtocol, be called for short HTTP) and wireless application protocol (Wireless Application Protocol is called for short WAP) see through wireless network from the Internet download media data.But the media data of download all is the clear data without overprotection.Under the situation of media data not being protected, the user of mobile phone can be transmitted to other mobile phone with the media data of downloading by sharp again mobile phone.Even the media data with high value also can be duplicated by the user is unconfined.
The provider of some media content can formulate the special form different with the standard media form voluntarily.Mobile phone need meet above-mentioned special form could open the media data that meets above-mentioned special form.Though this mode can reduce the possibility that medium are replicated, hinder the interoperability of mobile phone media data also.
Therefore, need a kind of method of protecting media data, in order to overcome above-mentioned media data by unconfined problem of duplicating.
Summary of the invention
In view of this, purpose of the present invention is providing a kind of media data guard method.
Based on above-mentioned purpose, the invention provides a kind of media data guard method, be executed in a communication terminal and a server, above-mentioned communication terminal and above-mentioned server carry out wireless telecommunications.At first,, send a medium download request, download a media data in order to request at above-mentioned communication terminal.At above-mentioned server, receive above-mentioned medium download request.At above-mentioned server,, produce one of above-mentioned media data and describe archives, media protection archives, reach copyright message archives according to above-mentioned medium download request.The foregoing description archives comprise the download address of above-mentioned media protection archives and above-mentioned copyright message archives.Above-mentioned media protection archives comprise the above-mentioned media data after the encryption.Above-mentioned copyright message archives comprise in order to the deciphering gold key to above-mentioned media protection file declassification.At above-mentioned server, transmit the foregoing description archives to above-mentioned communication terminal.At above-mentioned communication terminal, receive the foregoing description archives from above-mentioned server.
In addition, the present invention more proposes a kind of media data guard method, is executed in server.At first, from communication terminal receiving media download request.Then, according to above-mentioned medium download request, produce description shelves, media protection archives and the copyright message archives of above-mentioned media data.The foregoing description archives comprise the download address of above-mentioned media protection archives and above-mentioned copyright message archives.Above-mentioned media protection archives comprise the above-mentioned media data after the encryption.Above-mentioned copyright message archives comprise in order to the deciphering gold key to above-mentioned media protection file declassification.Transmit the foregoing description shelves to above-mentioned communication terminal.
In addition, the present invention also proposes a kind of media data guard method, is executed in communication terminal.Send medium and download request to server, in order to request downloads of media data.Receive the description archives from above-mentioned server, wherein the foregoing description archives comprise the download address of media protection archives and copyright message archives.Above-mentioned media protection archives comprise the above-mentioned media data after the encryption.Above-mentioned copyright message archives comprise in order to the deciphering gold key to above-mentioned media protection file declassification.According to the download address of above-mentioned media protection archives in the foregoing description archives, send protection medium download request, in order to download above-mentioned media protection archives.Receive above-mentioned media protection archives.According to the download address of above-mentioned copyright message archives in the foregoing description archives, send the copyright download request, in order to download above-mentioned copyright message archives.Receive above-mentioned copyright message archives.
In addition, the present invention also proposes a kind of media data protection system.Above-mentioned media data protection system comprises server and communication terminal, in order to carry out wireless telecommunications with above-mentioned server.Above-mentioned server receives a medium download request from above-mentioned communication terminal, and according to above-mentioned medium download request, produces one of above-mentioned media data and describe shelves, media protection archives and copyright message archives.The foregoing description archives comprise the download address of above-mentioned media protection archives and above-mentioned copyright message archives.Above-mentioned media protection archives comprise the above-mentioned media data after the encryption.Above-mentioned copyright message archives comprise in order to the deciphering gold key to above-mentioned media protection file declassification.Above-mentioned server transmits the foregoing description shelves to above-mentioned communication terminal.
Description of drawings
Fig. 1 has shown the structural representation of media data protection system of the present invention.
Fig. 2 has shown media data guard method flow chart of the present invention.
Fig. 3 has shown description of the invention archives schematic diagram.
Fig. 4 has shown media protection archives schematic diagram of the present invention.
Fig. 5 has shown copyright message archives schematic diagram of the present invention.
Embodiment
The invention provides a kind of media data guard method, can be executed in the media data protection system.
Fig. 1 has shown the structural representation of media data protection system of the present invention.Communication terminal 10, wireless application protocol gateway 15 and server 20 have been comprised among Fig. 1.Communication terminal 10 can be the various device for mobile communication with medium browsing function and wireless network communication function, for example: mobile phone or personal digital assistant.Communication terminal 10 comprise memory 4, and browser 11 in order to read, decoding, playing media data.In order to connecting communication terminal 10 and server 20, and the user that can carry out device for mobile communication authenticates (end-userauthentication) to wireless application protocol gateway 15 as traditional wireless application protocol gateway.Server 20 comprises encrypts golden key 135 and a media database 21 in order to the Storage Media data, wherein comprises media data 100.
Wireless application protocol gateway 15 is via Internet connection server 20.Communication terminal 10 can connect wireless application protocol gateway 15 via Wi-Fi.
Media data guard method of the present invention can be executed in communication terminal 10 and server 20.When communication terminal 10 and server 20 carried out wireless telecommunications, communication terminal 10 carried out wireless telecommunications via wireless application protocol gateway 15 and server 20.The message transmission of communication terminal 10 and server 20 all sees through wireless application protocol gateway 15.Therefore following message and transfer of data will repeat no more wireless application protocol gateway 15.In the present invention, communication terminal 10 and server 20 utilize wireless application protocol (Wireless Application Protocol is called for short WAP) to carry out wireless telecommunications, yet it is not in order to limit the present invention.The present invention also can be applied in the transfer of data agreement that any communication terminal is supported.
Fig. 2 has shown media data guard method flow chart of the present invention.
Fig. 3 shows description of the invention archives schematic diagram.Describing archives 110 comprises the media protection archives and downloads information 111, copyright message archives and download information 112 and introduce information 113 about media data 100.Describe archives 110 and also can comprise other more information.The media protection archives are downloaded the address information that information 111 comprises media protection archives 120.Copyright message archives are downloaded the address information that information 112 comprises copyright message archives 130.For instance; if server 20 produces and Storage Media protection archives 120 and copyright message archives 130 in the memory of server 20 itself; then media protection archives download information 111 and copyright message archives download information 112 all comprise the address of server 20, and distinctly comprise the path information of media protection archives 120 and copyright message archives 130.It should be noted that it is not in order to limit the present invention.For instance, server 20 also can couple other server, for example is called first server and second server.If server 20 produces and Storage Media out of the ordinary protects archives 120 and copyright message archives 130 in the memory of first server and second server; then media protection archives download information 111 and copyright message archives download information 112 comprise outside the path information of media protection archives 120 and copyright message archives 130, also distinctly comprise the address of first server and second server.
Introduce of the brief introduction of information 113 records about media data 100.The user of communication terminal 10 can read and introduce information 113 to determine whether downloads of media is protected archives 120.
Fig. 4 has shown media protection archives schematic diagram of the present invention.Media protection archives 120 comprise length field 121, mime type field 122, enciphered data length field 123 and the enciphered data 124 of mime type.Why type media data of media data 100 no matter, through adding server 20 codings and encrypt after can produce the media protection archives of identical mime type.Server 20 can utilize various coded systems that media data 100 is encoded, for example binary coding, UU encode (UU-encode).
The length field 121 of mime type is in order to the length of the mime type of recording medium data 100.Mime type field 122 is in order to the mime type of recording medium data 100.Enciphered data length field 123 length in order to recording of encrypted data 124.Enciphered data 124 is that server 20 is encrypted and produced with 135 pairs of media datas of a golden key of encryption 100.Enciphered data 124 writes down encrypted media data 100.Yet media protection archives 120 also can comprise other information.
Fig. 5 has shown copyright message archives schematic diagram of the present invention.Copyright message archives 130 comprise a golden key 131 of deciphering and medium copyright 132.Decipher golden key 131 in order to enciphered data 124 is deciphered.Medium copyright 132 can comprise the useful life information of media data 100.Yet copyright message archives 130 also can comprise other more information, for example media data operating specification regulations.
After media protection archives 120 and copyright message archives 130 were produced, server 20 can be stored in media protection archives 120 and copyright message archives 130 in the memory of server 20 or store up respectively in different servers.
Then, server 20 transmits foregoing description archives 110 to communication terminal 10 (step S8).
If downloads of media protection archives 120 are wanted in decision, communication terminal 10 is downloaded information 111 according to the media protection archives in the foregoing description archives, sends a protection medium download request, in order to download above-mentioned media protection archives 120 (step S12).After server 20 received protection medium download requests (step S14), transfer medium protection archives 120 were to communication terminal 10 (step S16).
If decision will be downloaded copyright message archives 130.Communication terminal 10 is downloaded information 112 according to the copyright message archives in the foregoing description archives 110, sends a copyright download request, in order to download above-mentioned copyright message archives 130 (step S20).
The time limit information is the useful life in order to restricting media protection archives.Communication terminal 10 is with copyright message archives 130 during with media protection archives 120 deciphering, according to the service time that the time limit information limits deciphering back media data 100, for example the time limit information is recorded in the relevant data structure of media data 100.During the each playing media data 100 of portable terminal 10, judge earlier whether media data 100 expires.In this case, the copyright information does not have the number of times restriction, and it only need be used when decrypt media protection archives 120, controls the use of media data 100 later on according to the time limit information that has been provided with by communication terminal 10.Yet copyright message archives 130 of the present invention can utilize diverse ways to protect media data 100.
For instance, communication terminal is limited distinctly to store the media data 100 after the deciphering.When communication terminal 10 will be opened media data 100, all need utilize 120 deciphering of 130 pairs of media protection archives of copyright message archives to produce media data 100.And communication terminal can not be sent out the copyright information outward.By this, can prevent that media data 100 from being duplicated arbitrarily.
Media data guard method of the present invention can be in conjunction with billing mechanism.For instance, charging lock road is set in wireless application protocol gateway 15 or server 20.By this, can the download request person of media data 100 be chargeed.
Therefore, media data guard method of the present invention and system can protect media data, and prevent media data after being moved the communicating terminal download, the problem of being duplicated arbitrarily.
Though the present invention discloses as above with preferred embodiment; right its is not in order to limit the present invention; anyly be familiar with present technique field person; without departing from the spirit and scope of the present invention; when can being used for a variety of modifications and variations, so protection scope of the present invention is as the criterion when looking accompanying the claim person of defining.
Claims (5)
1. media data guard method is executed in a communication terminal and a server, and above-mentioned communication terminal and above-mentioned server carry out wireless telecommunications, comprise the following steps:
At above-mentioned communication terminal, send medium and download request to above-mentioned server, download a media data in order to request;
At above-mentioned server, receive above-mentioned medium download request;
At above-mentioned server, according to above-mentioned medium download request, produce one of above-mentioned media data and describe archives, media protection archives and copyright message archives, wherein the foregoing description archives comprise the download address of above-mentioned media protection archives and above-mentioned copyright message archives, above-mentioned media protection archives comprise the above-mentioned media data after the encryption, and above-mentioned copyright message archives comprise in order to the deciphering gold key to above-mentioned media protection file declassification;
At above-mentioned server, transmit the foregoing description archives to above-mentioned communication terminal;
At above-mentioned communication terminal, receive the foregoing description archives from above-mentioned server;
At above-mentioned communication terminal,, send a protection medium download request, in order to download above-mentioned media protection archives according to the download address of the above-mentioned media protection archives in the foregoing description archives;
At above-mentioned communication terminal, receive above-mentioned media protection archives;
At above-mentioned communication terminal, the download address according to the above-mentioned copyright message archives in the foregoing description archives sends a copyright download request, in order to download above-mentioned copyright message archives;
At above-mentioned communication terminal, receive above-mentioned copyright message archives; And
At above-mentioned communication terminal, utilize above-mentioned copyright message archives, to the media protection file declassification to produce above-mentioned media data.
2. media data guard method as claimed in claim 1 is characterized in that, above-mentioned copyright message archives comprise the useful life of above-mentioned media data.
3. a media data guard method of carrying out on a server comprises the following steps:
Receive a medium download request from a communication terminal, in order to ask a media data;
According to above-mentioned medium download request, produce one of above-mentioned media data and describe shelves, media protection archives and copyright message archives, wherein the foregoing description archives comprise the download address of above-mentioned media protection archives and above-mentioned copyright message archives, above-mentioned media protection archives comprise the above-mentioned media data after the encryption, and above-mentioned copyright message archives comprise in order to the deciphering gold key to above-mentioned media protection file declassification;
Transmit the foregoing description shelves to above-mentioned communication terminal;
Receive in order to download a protection medium download request of above-mentioned media protection archives from above-mentioned communication terminal;
Send above-mentioned media protection archives to above-mentioned communication terminal;
From above-mentioned communication terminal, receive in order to download a copyright download request of above-mentioned copyright message archives; And
Send above-mentioned copyright message archives to above-mentioned communication terminal.
4. a media data guard method of carrying out on a communication terminal comprises the following steps:
Send medium and download request to a server, download a media data in order to request;
Receive one from above-mentioned server and describe archives, wherein the foregoing description archives comprise the download address of media protection archives and copyright message archives, above-mentioned media protection archives comprise the above-mentioned media data after the encryption, and above-mentioned copyright message archives comprise in order to the deciphering gold key to above-mentioned media protection file declassification;
According to the download address of above-mentioned media protection archives in the foregoing description archives, send a protection medium download request, in order to download above-mentioned media protection archives;
Receive above-mentioned media protection archives;
Download address according to above-mentioned copyright message archives in the foregoing description archives sends a copyright download request, in order to download above-mentioned copyright message archives;
Receive above-mentioned copyright message archives; And
Utilize above-mentioned copyright message archives, to the media protection file declassification to produce above-mentioned media data.
5. the media data guard method of carrying out on a communication terminal as claimed in claim 4 is characterized in that above-mentioned copyright message archives comprise the useful life of above-mentioned media data.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2004100247477A CN100384272C (en) | 2004-05-28 | 2004-05-28 | Media data protecting method and system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2004100247477A CN100384272C (en) | 2004-05-28 | 2004-05-28 | Media data protecting method and system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1705386A CN1705386A (en) | 2005-12-07 |
| CN100384272C true CN100384272C (en) | 2008-04-23 |
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| Application Number | Title | Priority Date | Filing Date |
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| CNB2004100247477A Expired - Fee Related CN100384272C (en) | 2004-05-28 | 2004-05-28 | Media data protecting method and system |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4188966B2 (en) * | 2005-12-15 | 2008-12-03 | 株式会社エヌ・ティ・ティ・ドコモ | Communication terminal and content transmission method |
| CN101005364B (en) * | 2006-01-16 | 2010-09-29 | 中兴通讯股份有限公司 | Medium service system |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1435762A (en) * | 2002-01-29 | 2003-08-13 | 因特坦尔亚洲股份有限公司 | Device and method for preventing digital medium for infringing and pirating |
| US20030182553A1 (en) * | 2002-03-22 | 2003-09-25 | General Instrument Corporation | End-to end protection of media stream encryption keys for voice-over-IP systems |
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2004
- 2004-05-28 CN CNB2004100247477A patent/CN100384272C/en not_active Expired - Fee Related
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1435762A (en) * | 2002-01-29 | 2003-08-13 | 因特坦尔亚洲股份有限公司 | Device and method for preventing digital medium for infringing and pirating |
| US20030182553A1 (en) * | 2002-03-22 | 2003-09-25 | General Instrument Corporation | End-to end protection of media stream encryption keys for voice-over-IP systems |
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| Publication number | Publication date |
|---|---|
| CN1705386A (en) | 2005-12-07 |
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| CI01 | Correction of invention patent gazette |
Correction item: Second inventor Correct: Cai Shiguang False: Cai Shixing Number: 17 Page: 947 Volume: 24 |
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Correction item: Second inventor Correct: Cai Shiguang False: Cai Shixing Number: 17 Page: The title page Volume: 24 |
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Free format text: CORRECT: THE SECOND INVENTOR; FROM: CAI SHIXING TO: CAI SHIGUANG |
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Free format text: CORRECT: THE SECOND INVENTOR; FROM: CAI SHIXING TO: CAI SHIGUANG |
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| CF01 | Termination of patent right due to non-payment of annual fee | ||
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Granted publication date: 20080423 Termination date: 20200528 |