CN101321155B - Method for acquiring user domain information, domain management server and permission server - Google Patents
Method for acquiring user domain information, domain management server and permission server Download PDFInfo
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- CN101321155B CN101321155B CN200710074739.7A CN200710074739A CN101321155B CN 101321155 B CN101321155 B CN 101321155B CN 200710074739 A CN200710074739 A CN 200710074739A CN 101321155 B CN101321155 B CN 101321155B
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- 238000000034 method Methods 0.000 title claims abstract description 37
- 230000008676 import Effects 0.000 claims description 14
- 238000012545 processing Methods 0.000 claims description 3
- 230000008569 process Effects 0.000 abstract description 9
- 230000008859 change Effects 0.000 abstract description 2
- 230000003993 interaction Effects 0.000 abstract 1
- 230000004044 response Effects 0.000 description 11
- 238000010586 diagram Methods 0.000 description 7
- 238000012217 deletion Methods 0.000 description 5
- 230000037430 deletion Effects 0.000 description 5
- 230000006870 function Effects 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 238000005538 encapsulation Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000002452 interceptive effect Effects 0.000 description 2
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L63/00—Network architectures or network communication protocols for network security
- H04L63/10—Network architectures or network communication protocols for network security for controlling access to devices or network resources
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F21/00—Security arrangements for protecting computers, components thereof, programs or data against unauthorised activity
- G06F21/10—Protecting distributed programs or content, e.g. vending or licensing of copyrighted material ; Digital rights management [DRM]
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L2463/00—Additional details relating to network architectures or network communication protocols for network security covered by H04L63/00
- H04L2463/101—Additional details relating to network architectures or network communication protocols for network security covered by H04L63/00 applying security measures for digital rights management
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Abstract
The invention discloses a method for obtaining the user domain information, a method for guiding the user domain permission, a domain managing server and a permission server. The method for obtaining the user domain information comprises that the domain managing server implements the relevant operations for the user domain to cause the change of the user domain information; the domain managing server initiatively transmits the changed user domain information to the copyright issuer. The invention can initiatively issue the user domain information to the copyright issuer for facilitating the copyright issuer not obtaining the user information form the DA/DEA in the subsequent process, which can assure the precision of the information and simplicity for the information interaction in the subsequent process.
Description
Technical field
The present invention relates to the communications field, relate in particular to a kind of method, field managing server and permit server that obtains user domain information.
Background technology
Digital copyright management (Digital Rights Management is called for short DRM) is protected the possessory legitimate rights and interests of digital content mainly through the use of claim limitation and content protecting control figure content.The publisher of digital content (Content Issuer, CI) with after the encrypt digital content, the user downloads to the terminal with the encrypted digital content packet; (Rights Issuer, RI) to user terminal distribution and the corresponding licence of digital content, said licence comprises content decryption key and corresponding authority to rights issuer.Equipment has only and has content data packets (wherein comprising the necessary information of decrypts digital content) and licence simultaneously, could normally use the digital content of being bought.DRM Agent utilizes the PKI deciphering of equipment to obtain license key, and then obtains the content key decrypts digital content in the licence, and according to the concrete use of the control of the authority information in licence user to digital content.
Authority in the licence mainly comprises right and two types of restrictions.According to the difference of the restriction that is comprised, licence can be divided into has state permission and stateless permission.The state permission is arranged, promptly contain the permission of number of times (count), cumulative time restriction such as (accumulated) state.The stateless permission, promptly all authority in the licence does not comprise the permission that state limited or only comprised time period (datetime) restriction.
Carry out the distribution and the management of licence for ease, introduced the notion of territory (Domain) among the OMA DRM 2.0.The territory is appreciated that to carried out the set of central controlled one group of associated device by RI.Each territory all has a unique domain identifier, shared domain key between the member in the territory.When RI is territory distribution permission (being called the territory permits), utilize certain measure to make permission bind mutually with domain key.Thereby the member can obtain contents encryption key by domain key in the territory, uses digital content; But not the territory member be owing to can't obtain domain key, then can not access digital content.Divide two types of functional entitys of IncFlds manager and territory member device (hereinafter to be referred as territory equipment) in the territory from logical functional entity.
For fear of setting up same territory for different RI; Can the function of territory management be peeled off from RI and come; Setting is independent of the functional entity domain manager (DA/DEA:Domain Authority/DomainEnforcement Agent) of RI; Carry out the function of user domain management, RI is that user domain generates the territory permission according to the territory relevant information, and the equipment in the respective user territory can use this user domain permission.
And in the prior art, the flow process of buying territory permission (RO) for user domain is shown in figure one:
Step 101, terminal D RMAGENT are at DA/DEA registration and adding user domain;
Register at rights issuer RI at step 102-106, terminal;
Step 107-116, terminal obtain user domain RO from RI.Wherein, step 109-112 is the process of RI and DA/DEA registration, and RI obtains information such as domain key from DA/DEA after registration is accomplished, and generates the territory according to the domain information that obtains and permit, and is handed down to the terminal.
The inventor finds in the process of invention; RI and DA/DEA interactive user domain information have only according to DRM Agent or LRM (Local Rights Management, local permit manager) and just can take place to RI request user domain permission or when importing the user domain permission in the prior art.
In addition, if when LRM (Local Rights Management, local permit manager) request RI imports the RO permission in the prior art, RI then can't carry out authentication to LRM.
Summary of the invention
The present invention has provided a kind of method of obtaining user domain information, has only according to DRM Agent or LRM in order to RI and DA/DEA interactive user domain information in the solution prior art and when the user domain permission is permitted or imported to RI request user domain, just can take place.
The embodiment of the invention provides a kind of method that imports the user domain permission, and rights issuer receives the importing user domain license request that local permit manager is initiated; Said importing user domain license request is carried the user domain sign, local permit manager sign; Rights issuer identifies to the said user domain information of domain manager acquisition request according to said user domain; Rights issuer is legal according to said user domain information and the local permit manager of local permit manager sign checking, and generates the territory permission; Rights issuer is returned the permission of said territory to said local permit manager.
In addition, the embodiment of the invention also provides a kind of permit server, comprising: receiver module, be used to receive the request that imports the territory permission, and carry local permit manager sign, domain identifier in the request of said importing territory permission; Acquisition module is used for obtaining according to said domain identifier the user domain information of user domain, and said user domain information comprises domain identifier, in the sign that domain key relevant information, domain policy, the checking of local permit manager are passed through one or multinomial; Authentication module, the user is legal according to the local permit manager of said local permit manager identification list and the said local permit manager sign correspondence of said local permit manager sign checking; Processing module, the user generates the territory permission according to said user domain information; Output module is used to return the permission of said territory.
Can know through embodiments of the invention; Rights issuer RI obtains user domain information according to the user domain sign from domain manager in the embodiments of the invention; And it is legal according to this user domain information and the local permit manager LRM of local permit manager sign checking; And send the territory that generates to this this locality permit manager LRM and permit, thereby realize the authentication of rights issuer RI to local permit manager LRM.
Description of drawings
Fig. 1 obtains the method flow diagram of territory permission for existing DRMAgent;
Fig. 2 initiatively sends the method flow diagram of user domain information for the DA/DEA that the embodiment of the invention provides to RI;
Fig. 3 initiatively triggers the method flow diagram that RI obtains user domain information for the DA/DEA that the embodiment of the invention provides;
Fig. 4 sends the method flow diagram of user domain information for the DA/DEA when the territory upgrading takes place that the embodiment of the invention provides to RI;
The method flow diagram that Fig. 5 permits for the distribution territory that the embodiment of the invention provides;
Fig. 6 imports RO for the LRM that the embodiment of the invention provides to the RI request, and RI obtains the method flow diagram of up-to-date user domain information to DA/DEA;
Embodiment
Understand and realization the present invention for the ease of persons skilled in the art, combine accompanying drawing to describe embodiments of the invention at present.
As shown in Figure 2, the DA/DEA that the embodiment of the invention provides initiatively may further comprise the steps to the method for RI transmission user domain information:
Step 201, RI and DA/DEA are mutual, accomplish the registration of RI in DA/DEA;
Step 202, DRM Agent and DA/DEA are mutual, accomplish the associative operation of user domain.Said associative operation comprises sets up new user domain, the user domain of upgrade, upgrade, deletion is already present, and the renewal of the interior LRM of user domain etc.; The associative operation of this step will cause the variation and the renewal of user domain information.
Step 203, DA/DEA are sent the user domain information notice to RI, carry user domain information or whole user domain information after the renewal in the said user domain information notice; Said user domain information includes but not limited to local permit manager (LRM) tabulation that greatest member's number in domain identifier (comprising territory algebraically), domain key relevant information, the territory, territory policy (domain policy), DA/DEA trust etc.
Step 204, RI return the user domain information response to DA/DEA, wherein comprise the treatment state to the user domain information notification message.
Carry the user domain information of the user domain information updated stored after the renewal in the user domain information notice that the utilization of step 205, RI is received.Obviously, step 204 and step 205 do not have the branch of strict order.RI is certainly receiving the first execution in step 205 in user domain information notice back, and execution in step 204 is promptly returned the user domain information response to DA/DEA again.
In addition; The user domain information of the DA/DEA that the embodiment of the invention provides after RI provides renewal is except can using method shown in Figure 2; DA/DEA also can initiatively trigger RI and obtain domain information, and its idiographic flow is referring to Fig. 3, and different with flow process shown in Figure 2 is; After DRM Agent execution in step 302 is promptly carried out the user domain associative operation, changed user domain information.DA/DEA is not that the user domain information after directly shown in the step 202 of Fig. 2, directly will upgrading sends to RI through the user domain information notice; But through step 203; Send out the trigger messages of closing the user domain information request to RI earlier; After the trigger messages of receiving said user domain information request, send the user domain information request by RI to DA/DEA.And DA/DEA returns the user domain information response according to said user domain information request to RI, and the user domain information after the renewal is carried in described user domain information response.And RI upgrades the user domain information of local storage according to the user domain information of carrying in the user domain information response of receiving.
In addition, DA/DEA can register with a plurality of RI, and these a plurality of RI such as RI-A and RI-B can generate the territory permission for the territory of DA/DEA.User domain information takes place after changing in DA/DEA; DA/DEA then can use Fig. 2 or method shown in Figure 3 to upgrade user domain information to a plurality of RI such as RI-A and RI-B respectively, and RI-A and RI-B update stored in the user domain information of this locality respectively according to the user domain information that obtains.And when DRM Agent in the user domain when RI-A (or RI-B) request domain is permitted, RI-A (or RI-B) can generate the permission of corresponding territory according to the user domain information that preserve this locality.
And for the user domain such as the UD1 that before DA/DEA and RI, have set up at DA/DEA place, DA/DEA can be in the process of registering with RI passes to RI with the user domain information of UD1; Or after registration is accomplished, through the user domain information notice permit server of the method shown in 203-204 or the 303-305 with UD1.
As shown in Figure 4, the embodiment of the invention provide when the territory upgrading takes place when, DA/DEA sends the method for user domain information to RI.This method may further comprise the steps:
Step 401, leak at domain key, perhaps under the reversed situation of certain territory member, from the consideration of user domain fail safe, DA/DEA will upgrade to user domain.After the upgrading, the algebraically in territory will add 1, and simultaneously, old domain key also will be replaced, and can't decipher and consume the newly-generated territory permission in upgrading back, territory so that only have the DRM Agent of old domain key.In OMA DRM 2.0, adopt the method maintenance field key of hash chain.With the afterbody node of hash chain as first generation domain key, each upgrading, then with the node of upper level in the hash chain as new domain key, the rest may be inferred.
All DRM Agent carry out the territory upgrading in step 402, the DA/DEA notice territory, and DRM Agent will share new domain key in the upgrading converse domain.
User domain information after step 403, DA/DEA will upgrade through the user domain information notice sends to RI.In this step, the user domain information that change can only will take place DA/DEA sends to RI, also can send whole user domain information.Among this embodiment, the user domain information of carrying in the message comprises at least: domain identifier, territory algebraically, domain key relevant information.Wherein territory algebraically also can obtain reflection in domain identifier, and promptly domain identifier and territory algebraically can show as same parameter; The domain key relevant information can be for being used for the domain key of encrypted permission encapsulation key, also can be for being used to generate the relevant information of domain key.
Step 404, RI upgrade the local domain information of preserving according to all or part of user domain information of carrying in the said user domain information.
Step 405, RI return the user domain information response, comprise the treatment state of RI to the user domain information notification message in this response.
What be worth explanation is not have strict time restriction among Fig. 4 between step 402 and the step 403-405.Be that DA/DAE both can notify earlier that DRM Agent upgrades in the territory, also can send the user domain information notice to RI earlier, can also send simultaneously.
Certainly,, set up user domain, or upgrade user domain because the user domain operation can also be the deletion user domain.If when said user domain is operating as the deletion user domain; Then DA/DEA sends user domain information deletion message to RI in the step 403; Need not carry the user domain information relevant parameter in this message, RI then is kept at local user domain information according to the notice deletion of DA/DEA.And said user domain is operating as when upgrading user domain, and the user domain information after then DA/DEA will upgrade through the user domain information notice in the step 403 sends to RI, and said user domain information notice comprises user domain sign, user domain strategy at least.And said user domain is operating as when setting up user domain, and then the notice of user domain information described in the step 403 can comprise all information of user domain information.
At Fig. 2 in the embodiment of Fig. 4; For the user domain information that before the registration of rights issuer and domain manager, has existed, then domain manager can send to rights issuer with said already present user domain information through following method: in the process of registering with rights issuer, the already present user domain information of domain manager is sent to rights issuer; Or domain manager is initiatively sending to rights issuer with already present user domain information with rights issuer after registration is accomplished.
As shown in Figure 5, the method flow of the distribution territory permission that the embodiment of the invention provides comprises the steps;
Step 501, RI and DA/DEA accomplish registration alternately;
Step 502, according to the arbitrary method described in Fig. 2-Fig. 4, RI and DA/DEA obtain user domain information from DA/DEA alternately; Said user domain information includes but not limited to: domain identifier, comprise local permit manager (LRM) tabulation that greatest member's number in territory algebraically, domain key relevant information, the territory, territory policy (domain policy), DA/DEA are trusted etc.Perhaps, said domain information comprises local permit manager (LRM) tabulation of greatest member's number in domain identifier (comprising territory algebraically), domain key relevant information, the territory, territory policy (domain policy), DA/DEA trust etc.
Step 503, RI preserve the user domain information of obtaining from DA/DEA.
Step 504, RI receive DRM Agent and obtain request to the territory permission that RI sends; The permission request of obtaining of said territory comprises DRM Agent sign, information such as domain identifier;
Step 505, RI generate the territory permission according to the user domain information of obtaining from DA/DEA in advance of preserving;
Step 506, RI return the territory permission to DRM Agent and obtain response, wherein comprise the territory permission that generates described in the step 505.
Can find out that from basic thought of the present invention among this embodiment, step 501-step 503 is not essential step.
Of Fig. 5, the embodiment of the invention can also represent that RI is the flow process that user domain imports the territory permission according to the importing territory license request of LRM.Like step 504 ', RI receives the importing territory license request that LRM sends to RI; Said importing territory license request comprises LRM sign, information such as domain identifier;
Step 505, RI generate the territory permission according to the user domain information of obtaining from DA/DEA in advance of preserving; Certainly; RI also need judge whether LRM is authorized to permit the territory permission that imports said user domain according to the LRM identification list that imports the LRM sign of carrying in the license request of territory and be stored in the local user domain information; And after said LRM was through checking, RI generated the territory permission that imports according to the user domain information of obtaining from DA/DEA in advance of preserving.
Step 506 ', RI returns to LRM and imports and permission response, wherein comprises the territory permission of the importing that generates described in the step 505.
As shown in Figure 6, the LRM that the embodiment of the invention provides imports RO to the RI request, and RI obtains the method flow diagram of up-to-date user domain information to DA/DEA;
Step 601, LRM request RI are that user domain imports a territory permission.LRM sign, domain identifier will be comprised in this request, the authority information that is used to generate the territory permission can be comprised in addition.
Step 602, RI initiate user domain information to DA/DEA and obtain request, are used for generating the required user domain information of territory permission to the DA/DEA request, comprise domain key relevant information, domain policy etc.In addition; Carry LRM sign, domain identifier in the described request; Whether be used for by DA/DEA checking LRM is that DA/DEA is the LRM that this user domain distributed; For this function, also can obtain in user domain information and carry the LRM sign of being distributed in the response for this user's language by DA/DEA, verify by RI self.
Step 603, DA/DEA return user domain information to RI and obtain response message.Said user domain information is obtained and is rung message and should also comprise up-to-date user domain information, comprising: domain identifier, domain key relevant information, territory algebraically, territory policy.In addition, can comprise also whether LRM verifies the sign of passing through, wherein territory algebraically also can obtain reflection in domain identifier, and promptly domain identifier and territory algebraically can be expressed as same parameter; The domain key relevant information can be for being used for the domain key of encrypted permission encapsulation key, also can be for being used to generate the relevant information of domain key; Whether the territory policy is the set of the defined series of rules about user domain of DA, like territory scale (size), the territory term of validity (lifetime), allow the territory to cut apart/merge etc.
Certainly; In step 602; The user domain information that RI sends to DA/DEA is obtained and can not carried the LRM sign in the request, and then in step 603, DA/DEA need not verify LRM; And returning the user domain information that is included as the LRM identification list that said user domain distributes to RI by DA/DEA, RI verifies voluntarily according to said LRM identification list whether LRM is legal.
Step 604, the RI sign that checking is passed through according to LRM; And generating the permission of corresponding territory according to information such as the domain identifier that obtains in the step 603, domain key relevant information, territory scales, said domain key is used to encapsulate the permission encryption key, the territory scale can be used for the expenses standard that RI confirms permission.
In addition, as previously mentioned, RI can be provided with the term of validity for the user domain information that preserve this locality, and after the term of validity of the time of preserving said user domain information above the RI setting, RI upgrades local user domain information then to the new user domain information of DA/DEA acquisition request.
In addition, the embodiment of the invention also provides a kind of field managing server, comprising: receiver module, be used to receive the request message that obtains user domain information, and carry local permit manager sign, domain identifier in the described request message; Authentication module, it is legal to be used for according to the said local permit manager of said local permit manager sign checking; Output module is used for returning according to said domain identifier the user domain information in said territory, and said user domain information comprises: domain identifier, in the sign that domain key relevant information, domain policy, the checking of local permit manager are passed through one or multinomial.
In addition, the embodiment of the invention also provides a kind of permit server to comprise: receiver module, be used to receive the request that imports the territory permission, and carry local permit manager sign, domain identifier in the request of said importing territory permission; Acquisition module is used for obtaining according to said domain identifier the user domain information of user domain, and said user domain information comprises domain identifier, in the sign that domain key relevant information, domain policy, the checking of local permit manager are passed through one or multinomial; Authentication module, the user is legal according to the local permit manager of said local permit manager identification list and the said local permit manager sign correspondence of said local permit manager sign checking; Processing module, the user generates the territory permission according to said user domain information; Output module is used to return the permission of said territory.
Obviously, those skilled in the art can carry out various changes and modification to the present invention and not break away from the spirit and scope of the present invention.Like this, belong within the scope of claim of the present invention and equivalent technologies thereof if of the present invention these are revised with modification, then the present invention also is intended to comprise these changes and modification interior.
Claims (4)
1. one kind imports the method that user domain is permitted, it is characterized in that:
Rights issuer receives the importing user domain license request that local permit manager LRM initiates; Said importing user domain license request is carried the user domain sign;
To the said user domain information of domain manager acquisition request, said user domain information comprises that also said domain manager is local permit manager sign and the local permit manager identification list that said user domain distributes to rights issuer according to said user domain sign;
Rights issuer verifies that according to local permit manager sign and local permit manager identification list in the said user domain information said local permit manager is legal, and generates the territory permission;
Rights issuer is returned the permission of said territory to said local permit manager.
2. the method for claim 1, it is characterized in that: said user domain information is up-to-date user domain information, also comprises: in domain identifier, territory algebraically, domain key relevant information, the territory policy one or multinomial.
3. according to claim 1 or claim 2 method is characterized in that: legal being specially of described checking LRM: verify that said LRM is identified in the described LRM identification list.
4. permit server is characterized in that comprising:
Receiver module is used to receive the request that imports the territory permission, carries local permit manager sign, user domain sign in the request of said importing territory permission;
Acquisition module is used for obtaining according to said user domain sign the user domain information of user domain, and said user domain information comprises domain identifier, in the sign that domain key relevant information, domain policy, the checking of local permit manager are passed through one or multinomial;
Authentication module, the user is legal according to the local permit manager of local permit manager identification list and the said local permit manager sign correspondence of said local permit manager sign checking;
Processing module, the user generates the territory permission according to said user domain information;
Output module is used to return the permission of said territory.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200710074739.7A CN101321155B (en) | 2007-06-06 | 2007-06-06 | Method for acquiring user domain information, domain management server and permission server |
| PCT/CN2008/070924 WO2008148325A1 (en) | 2007-06-06 | 2008-05-09 | A method for acquiring user domain information, a domain management server and a license server |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200710074739.7A CN101321155B (en) | 2007-06-06 | 2007-06-06 | Method for acquiring user domain information, domain management server and permission server |
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| Publication Number | Publication Date |
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| CN101321155A CN101321155A (en) | 2008-12-10 |
| CN101321155B true CN101321155B (en) | 2012-12-19 |
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| CN200710074739.7A Active CN101321155B (en) | 2007-06-06 | 2007-06-06 | Method for acquiring user domain information, domain management server and permission server |
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| CN (1) | CN101321155B (en) |
| WO (1) | WO2008148325A1 (en) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1412980A (en) * | 2002-11-08 | 2003-04-23 | 华为技术有限公司 | Data transmission method between web bridge |
| CN1878092A (en) * | 2006-07-12 | 2006-12-13 | 华为技术有限公司 | Domain management system, method for building local domain and method for acquisition of local domain licence |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1758593A (en) * | 2004-10-10 | 2006-04-12 | 大唐移动通信设备有限公司 | Service key updating method of multimedium playing service |
-
2007
- 2007-06-06 CN CN200710074739.7A patent/CN101321155B/en active Active
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2008
- 2008-05-09 WO PCT/CN2008/070924 patent/WO2008148325A1/en active Application Filing
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1412980A (en) * | 2002-11-08 | 2003-04-23 | 华为技术有限公司 | Data transmission method between web bridge |
| CN1878092A (en) * | 2006-07-12 | 2006-12-13 | 华为技术有限公司 | Domain management system, method for building local domain and method for acquisition of local domain licence |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101321155A (en) | 2008-12-10 |
| WO2008148325A1 (en) | 2008-12-11 |
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