CN101645289B - Method for securely distributing video compact disks - Google Patents
Method for securely distributing video compact disks Download PDFInfo
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- CN101645289B CN101645289B CN2008100487017A CN200810048701A CN101645289B CN 101645289 B CN101645289 B CN 101645289B CN 2008100487017 A CN2008100487017 A CN 2008100487017A CN 200810048701 A CN200810048701 A CN 200810048701A CN 101645289 B CN101645289 B CN 101645289B
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- registration
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- video compact
- media key
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Abstract
The invention relates to a method for securely distributing video compact disks. The method is characterized in that: a video compact disk is set with four kinds of information including a video compact disk ID, registration software, secure player software and encrypted media data; a service provider provides a registered certification server configured with user data base, and the information stored in the user data base comprises all valid video compact disk IDs and corresponding keys; a user computer loading the video compact disks establishes a communication link with the registered certification server, and the secure certification is realized by the communication link; and after the secure certification is realized, the secure player software is used for realizing the valid play. By using the distributing scheme provided by the invention, only user computers which are securely registered can play the video compact disks. The encrypted media data in the video compact disks can be played by secure players; and even if the unauthorized users copy the encrypted media data, the encrypted media data cannot be played. Therefore, the method has the advantages of high security, easy implementation, low cost and important market application value.
Description
Technical field
The invention belongs to technical field of digital copyright protection, particularly relate to a kind of method for securely distributing video compact disks.
Background technology
Video disc is the main carrier of multimedia audio-visual product, also is the main object of a large amount of bootleggings of copy right piracy.At present, generally the user is carried out control of authority by the cdrom encryption technology in advance.Have only and authorize the validated user ability decrypting disc data of obtaining media key, normal play video.But in case decipher expressly, data of optical disk is just fully without any safeguard measure, and the piracy of leaving is duplicated, and intellecture property is suffered a large amount of infringements.Therefore, realize that the video disc secure distribution is a technical field of digital copyright protection institute urgent problem.
Summary of the invention
The object of the invention is at the deficiencies in the prior art, proposes a kind of video disc secure distribution solution.
Technical scheme of the present invention is: 4 kinds of information are set on video disc, include CD ID, registration software, secure player software and encrypted media data; The service provider provides the authentication registration that is provided with customer data base server, and canned data comprises all legal CD ID and corresponding media key in the described customer data base; Establish a communications link between the subscriber computer of loading video disc and the authentication registration server, via the described realization safety certification that communicates to connect; Subscriber computer by security of operation player software decoding encrypted media data, is realized legal broadcast through after the safety certification; Described safety certification process may further comprise the steps,
The application for registration step, the user sends log-on message to the authentication registration server by operation registration software with secured fashion, and to apply for the registration of from the service provider, described log-on message comprises CD ID and computer identity identifying information;
The authentication registration step is used for the authentication registration server according to customer data base canned data authentication registration information, and determines whether to accept application for registration, arrives subscriber computer if accept then to send corresponding media key according to CD ID with secured fashion;
The registration encrypting step is used to register software and with secured fashion media key is write subscriber computer, for secure player software decode encrypted media data.
And described application for registration step realizes by following 4 steps,
Step 2.1, subscriber computer operation registration software;
Step 2.2, the input CD ID;
Step 2.3, registration software extracts the computer identity identifying information of subscriber computer;
Step 2.4, registration software sends CD ID and computer identity identifying information to the authentication registration server with secured fashion.
And described authentication registration step realizes by following 4 steps,
Step 3.1, canned data in CD ID that the authentication registration server relatively receives and the customer data base, if CD ID does not exist in customer data base, verification process stops, otherwise continues following steps;
Step 3.2, if CD ID is registered, verification process stops, otherwise continues following steps;
Step 3.3 is deposited computer identity identifying information and CD ID in the customer data base;
Step 3.4 sends media key to subscriber computer according to CD ID with secured fashion.
And, send media key with secured fashion described in the step 3.4, realize by the form transmission medium key of taking to encrypt.
And described registration encrypting step is carried out following 3 steps by registration software and is realized,
Step 5.1, the decrypt media key;
Step 5.2 is with computer identity identifying information encrypted media key;
Step 5.3 writes media key the registration table of subscriber computer.
And, realize that by secure player legal broadcast may further comprise the steps,
Step 6.1 is extracted the computer identity identifying information from subscriber computer;
Step 6.2 reads media key from the registration table of subscriber computer;
Step 6.3 is according to computer identity identifying information decrypt media key;
Step 6.4 adopts the encrypted media data in the media key decrypted video CD, shows for playing.
And, described on video disc the concrete mode of configuration information be, CD ID prints on the front cover of video disc, registration software, secure player software and encrypted media deposit data are in data of optical disk.
And described computer identity identifying information adopts the network interface card ID or the IP address of subscriber computer.
The present invention proposes computer hardware binding that video disc, media key and realization are play, have only secure registration subscriber computer could displaying video.Encrypted media data in the video disc are play by secure player, though unauthorized user copy encrypted media data, can not play content.Therefore the present invention has realized the video disc secure distribution, and is easy to implement, and is with low cost, can play the protective effect of multimedia tape market.
Description of drawings
Fig. 1 is the information setting synoptic diagram of the video disc of the embodiment of the invention;
Fig. 2 is an embodiment of the invention safety certification scheme synoptic diagram;
Fig. 3 is a principle of the invention synoptic diagram;
Fig. 4 is an embodiment of the invention registration process process flow diagram;
Fig. 5 is an embodiment of the invention playing process process flow diagram.
Embodiment
Describe technical scheme of the present invention in detail below in conjunction with accompanying drawing:
The present invention realizes that the primary measure of video disc secure distribution is for video disc adds information, except that the encrypted media data, CD ID, registration software, secure player is set also.During concrete enforcement, CD ID can print on the front cover of CD, and all the other information are deposited in the data of optical disk, referring to accompanying drawing 1.Certainly CD ID also can text or other form deposit in the data of optical disk.
The user holds this video disc, and the service provider provides the authentication registration that is provided with customer data base server.The user proposes register requirement by subscriber computer to the authentication registration server, and the authentication registration server sends authentication registration by the rear line computing machine, under service provider's control, realize safety certification like this, can guarantee video disc supplier's legitimate interests, referring to accompanying drawing 2.The invention provides the secure authentication technology scheme, comprise three steps: the application for registration step, the user sends log-on message to the authentication registration server by operation registration software with secured fashion, to apply for the registration of from the service provider, described log-on message comprises CD ID and computer identity identifying information; The authentication registration step is used for the authentication registration server according to customer data base canned data authentication registration information, and determines whether to accept application for registration, arrives subscriber computer if accept then to send corresponding media key according to CD ID with secured fashion; The registration encrypting step is used to register software and with secured fashion media key is write subscriber computer, for secure player software decode encrypted media data.
Therefore for the user, buy video disc after, only need operation registration software that video disc and his information are registered with online mode.This application for registration step can full automation, for example adopts the automatic broadcast mode operation of CD registration software, and registration software is filled in CD ID automatically; Also can select manually to move and fill in by the user.If by service provider's authentication, media key will be registered to his personal user's computing machine.Finally, he can security of operation player, the encrypted media data input secure player of video disc and by its deciphering, the user gets final product browsing media.This simple and safe distribution procedure can be referring to accompanying drawing 3.
Referring to accompanying drawing 4, for the ease of enforcement, the invention provides the secure registration idiographic flow: at first at user side, CD ID and computer identity identifying information (network interface card ID, IP address etc.) are sent to the authentication registration server as log-on message with secured fashion.Then in service providing end, the canned data of log-on message and customer data base compares, if CD ID exists in customer data base, whether then continue to investigate CD ID is registered, if be present in the CD ID of customer data base and unregistered mistake, just can be judged as the legal situation that obtains and use for the first time, computer identity identifying information and CD ID are deposited in the customer data base, send media key to subscriber computer with secured fashion according to CD ID.At last at user side, with secured fashion media key is write the registration table of subscriber computer, so just can be with this subscriber computer displaying video.
Referring to accompanying drawing 5, for the ease of implementing, the invention provides the playing process idiographic flow: secure player is extracted the computer identity identifying information from subscriber computer, from the registration table of subscriber computer, read media key, according to computer identity identifying information decrypt media key, adopt the media key decryption information to decrypt encrypted media data in the video disc then, medium display the play.
During concrete enforcement, registration software and secure player can be according to above-mentioned flow processs, and the operating platform that is adapted to subscriber computer by those skilled in the art carries out the software programming realization.Registration software and secure player are integrated into a software program so that the situation that the user uses, also should be in the claimed scope of the present invention.Along with development in science and technology is used, the same product with network connection, dvd playback function with individual PC such as easy PC, PSP has appearred, and the claimed scope of the present invention also should comprise the equivalent with this series products alternate user computing machine.
The invention provides further technical scheme, realize the complete procedure of secure distribution by succinct reasonably step.The following steps flow process can be directly utilized when those skilled in the art implement, also adjustment can be optimized.
Described application for registration step realizes by following 4 steps: step 2.1, subscriber computer operation registration software, the registration function that software provided is extracted CD ID and computer identity identification code exactly, and CD-enciphering ID and computer identity identification code also send it to the service provider; Step 2.2, the input CD ID, implementation is imported CD ID for the user from the inputting interface of registration software, or registration software is read CD ID from CD; Step 2.3, registration software extracts the computer identity identifying information of subscriber computer; Step 2.4, registration software sends CD ID and computer identity identifying information to the authentication registration server with secured fashion.The embodiment of step 2.4 is: CD ID and computer identity identification code are represented with parameter D and C respectively K is the total transmission security key of registration software and services provider, and the encryption function that E uses for registration software, then ciphering process is
X＝E(D||C，K).
Wherein, D||C is combined into an argument sequence with D and C, and X is the argument sequence after encrypting.
Described authentication registration step realizes by following 4 steps: step 3.1, the log-on message that the authentication registration server relatively receives (comprises CD ID sign indicating number and computer identity identification code C, the CD ID sign indicating number is designated D) and customer data base in canned data, if CD ID does not exist in customer data base, verification process stops, otherwise continues following steps; Step 3.2, if CD ID is registered, verification process stops, otherwise continues following steps; Step 3.3 is deposited computer identity identifying information and CD ID in the customer data base; Step 3.4 sends media key to subscriber computer according to CD ID with secured fashion.Because the form transmission medium key that the embodiment of the invention is taked to encrypt when step 2.4 is realized, therefore needs to be decrypted before step 3.1, process is as follows:
D||C＝F(X，K).
Wherein, D||C is combined into an argument sequence with D and C, and X is the argument sequence after encrypting, and K is the transmission security key of deciphering usefulness, and F is a decryption function.
Step 3, the media key K that sends in 4
mThe same transmission security key K that adopts.Carry out encryption, adopt and encrypt as follows with step 1.4 similar methods
K’＝E(K
m，K).
Wherein, K ' is the media key after encrypted, and E is an encryption function, and K is the transmission security key that uses when encrypting.
Described registration encrypting step is carried out following 3 steps by registration software and is realized: step 5.1, and the decrypt media key, the media key K ' that the transmission security key K deciphering that registration software adopts and server end is complementary receives, decrypting process is
K
m＝F(K’，K).
Wherein, K
mBe the media key that obtains after decrypted, F is a decryption function;
Step 5.2, registration software is with computer identity identification code C and secret parameter S (S is the secret parameter that registration software and secure player have jointly) encryption key K jointly
mMethod is as follows
K”＝E(K
m，G(C，S)).
Wherein, K " be the media key after encrypted, E is an encryption function, (C is that C and S are done married operation S) to G, and for example xor operation is carried out in step-by-step;
Step 5.3 is with the media key K after encrypting " write the registration table of subscriber computer.
When the user need watch, security of operation player on subscriber computer, realize that by secure player legal broadcast may further comprise the steps: step 6.1, from subscriber computer, extract computer identity identifying information C; Step 6.2 reads media key K from the registration table of subscriber computer "; Step 6.3 is with computer identity identification code C and secret parameter S decrypt media key K ", process is as follows
K
m＝F(K”，G(C，S)).
Wherein, K " be the media key after encrypted, K
mBe the media key after the deciphering, F is a decryption function, and (C is that C and S are done married operation S) to G, and for example xor operation is carried out in step-by-step; Step 6.4 adopts media key K
mEncrypted media data in the decrypted video CD show for playing.
Claims (6)
1. a method for securely distributing video compact disks is characterized in that: 4 kinds of information are set on video disc, include CD ID, registration software, secure player software and encrypted media data; The service provider provides the authentication registration that is provided with customer data base server, and canned data comprises all legal CD ID and corresponding key in the described customer data base; Establish a communications link between the subscriber computer of loading video disc and the authentication registration server, via the described realization safety certification that communicates to connect; Subscriber computer by security of operation player software decoding encrypted media data, is realized legal broadcast through after the safety certification; Described safety certification process may further comprise the steps,
The application for registration step, the user sends log-on message to the authentication registration server by operation registration software with secured fashion, and to apply for the registration of from the service provider, described log-on message comprises CD ID and computer identity identifying information; Described application for registration step realizes by following 4 steps,
Step 2.1, subscriber computer operation registration software;
Step 2.2, the input CD ID;
Step 2.3, registration software extracts the computer identity identifying information of subscriber computer;
Step 2.4, registration software sends CD ID and computer identity identifying information to the authentication registration server with secured fashion;
The authentication registration step is used for the authentication registration server according to customer data base canned data authentication registration information, and determines whether to accept application for registration, arrives subscriber computer if accept then to send corresponding media key according to CD ID with secured fashion; Described authentication registration step realizes by following 4 steps,
Step 3.1, canned data in CD ID that the authentication registration server relatively receives and the customer data base, if CD ID does not exist in customer data base, verification process stops, otherwise continues following steps;
Step 3.2, if CD ID is registered, verification process stops, otherwise continues following steps;
Step 3.3 is deposited computer identity identifying information and CD ID in the customer data base;
Step 3.4 sends media key to subscriber computer according to CD ID with secured fashion;
The registration encrypting step is used to register software and with secured fashion media key is write subscriber computer, for secure player software decode encrypted media data.
2. method for securely distributing video compact disks according to claim 1 is characterized in that: send media key with secured fashion described in the step 3.4, realize by the form transmission medium key of taking to encrypt.
3. method for securely distributing video compact disks according to claim 2 is characterized in that: described registration encrypting step is carried out following 3 steps by registration software and is realized,
Step 5.1, the decrypt media key;
Step 5.2 is with computer identity identifying information encrypted media key;
Step 5.3 writes the media key after encrypting the registration table of subscriber computer.
4. method for securely distributing video compact disks according to claim 3 is characterized in that: realize that by secure player legal broadcast may further comprise the steps,
Step 6.1 is extracted the computer identity identifying information from subscriber computer;
Step 6.2 reads media key from the registration table of subscriber computer;
Step 6.3 is according to computer identity identifying information decrypt media key;
Step 6.4 adopts the encrypted media data in the media key decrypted video CD, shows for playing.
5. according to claim 1 or 2 or 3 or 4 described method for securely distributing video compact disks, it is characterized in that: described on video disc the concrete mode of configuration information be, CD ID prints on the front cover of video disc, and registration software, secure player software and encrypted media deposit data are in data of optical disk.
6. according to claim 1 or 2 or 3 or 4 described method for securely distributing video compact disks, it is characterized in that: described computer identity identifying information adopts the network interface card ID or the IP address of subscriber computer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008100487017A CN101645289B (en) | 2008-08-06 | 2008-08-06 | Method for securely distributing video compact disks |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008100487017A CN101645289B (en) | 2008-08-06 | 2008-08-06 | Method for securely distributing video compact disks |
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| Publication Number | Publication Date |
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| CN101645289A CN101645289A (en) | 2010-02-10 |
| CN101645289B true CN101645289B (en) | 2011-11-30 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2008100487017A Expired - Fee Related CN101645289B (en) | 2008-08-06 | 2008-08-06 | Method for securely distributing video compact disks |
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| CN (1) | CN101645289B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102436830A (en) * | 2011-08-31 | 2012-05-02 | 武汉光谷高清科技发展有限公司 | Internet connection sharing (ICS) authentication system and authentication method thereof |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1471016A (en) * | 2002-07-24 | 2004-01-28 | 毅 苏 | Media distributing method and recreation apparatus supporting same |
| CN1606027A (en) * | 2003-10-10 | 2005-04-13 | 深圳市派思数码科技有限公司 | Method for software copyright protection by utilizing fingerprint and application apparatus thereof |
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2008
- 2008-08-06 CN CN2008100487017A patent/CN101645289B/en not_active Expired - Fee Related
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1471016A (en) * | 2002-07-24 | 2004-01-28 | 毅 苏 | Media distributing method and recreation apparatus supporting same |
| CN1606027A (en) * | 2003-10-10 | 2005-04-13 | 深圳市派思数码科技有限公司 | Method for software copyright protection by utilizing fingerprint and application apparatus thereof |
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| CN101645289A (en) | 2010-02-10 |
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Granted publication date: 20111130 Termination date: 20120806 |