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WO2008148325A1 - Procédé servant à acquérir des informations d'un domaine d'utilisateur, serveur de gestion de domaine et serveur de licence - Google Patents

Procédé servant à acquérir des informations d'un domaine d'utilisateur, serveur de gestion de domaine et serveur de licence Download PDF

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Publication number
WO2008148325A1
WO2008148325A1 PCT/CN2008/070924 CN2008070924W WO2008148325A1 WO 2008148325 A1 WO2008148325 A1 WO 2008148325A1 CN 2008070924 W CN2008070924 W CN 2008070924W WO 2008148325 A1 WO2008148325 A1 WO 2008148325A1
Authority
WO
WIPO (PCT)
Prior art keywords
domain
user domain
user
license
manager
Prior art date
Application number
PCT/CN2008/070924
Other languages
English (en)
Chinese (zh)
Inventor
Wenjie Feng
Pei Dang
Renzhou Zhang
Haojun Zhou
Dagang Chen
Zhipeng Zhou
Chen Huang
Original Assignee
Huawei Technologies Co., Ltd.
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Huawei Technologies Co., Ltd. filed Critical Huawei Technologies Co., Ltd.
Publication of WO2008148325A1 publication Critical patent/WO2008148325A1/fr

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Classifications

    • 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
    • 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]
    • 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

Definitions

  • the present invention relates to the field of communications, and in particular, to a method for obtaining user domain information, a domain management server, and a license server. Background technique
  • Digital Rights Management protects the legitimate rights and interests of digital content owners by controlling the use of digital content through rights restrictions and content protection.
  • the digital content publisher Content Issuer, CI
  • the Rights Issuer RI
  • the license includes a content decryption key and corresponding rights.
  • the device can only use the digital content purchased if it has both content packets and licenses.
  • the DRM Agent decrypts the license key using the device's private key, and then obtains the content key in the license to decrypt the digital content, and controls the user's specific use of the digital content according to the permission information in the license.
  • the permissions in the license mainly include two categories of rights and restrictions. Licenses can be divided into stateful licenses and stateless licenses, depending on the limitations involved. Stateful licenses, that is, licenses that contain status restrictions such as count (count) and accumulated time. A stateless license, that is, all rights in the license do not include a state limit or a license that only includes a date time limit.
  • a domain can be understood as a collection of associated devices that are centrally controlled by an RI. Each domain has a unique domain ID that shares domain keys between members within the domain.
  • a domain license When the RI issues a license for a domain (called a domain license), it uses certain measures to bind the license to the domain key. Therefore, members in the domain can obtain content encryption by means of the domain key. Key, using digital content; non-domain members cannot access digital content because they cannot obtain a domain key.
  • the domain contains two types of functional entities: domain managers and domain member devices (hereinafter referred to as domain devices).
  • the RI In order to avoid establishing the same domain for different RIs, you can separate the domain management functions from the RI, set the IA-free Domain Authority/Domain Enforcement Agent (DA/DEA), and perform user domain management.
  • DA/DEA IA-free Domain Authority/Domain Enforcement Agent
  • the function, the RI generates a domain license for the user domain based on the domain-related information, and the user domain license can be used by the device in the corresponding user domain.
  • Step S101 The terminal DRM Agent registers with the DA/DEA and joins the user domain;
  • Step S107 - S116 The terminal acquires a user domain license from the RI.
  • Step S109 - Step S112 is a process of registering the RI and the DA/DEA, and after the registration is completed, the RI obtains the domain key and other information from the DA/DEA, and generates a domain license according to the obtained domain information, and sends the domain license to the domain license. terminal.
  • the RI and DA/DEA interactive user domain information only occurs when the DRM Agent or LRM (Local Rights Management) requests a user domain license or a user domain license.
  • the embodiment of the present invention provides a method for acquiring user domain information, which is used to solve the problem that the RI and DA/DEA interactive user domain information in the prior art can only be based on the DRM Agent or the LRM.
  • the embodiment of the invention provides a method for obtaining user domain information, including: domain management
  • the user domain information operation causes the user domain information to change; the domain manager actively sends the changed user domain information to the copyright issuer.
  • an embodiment of the present invention further provides a method for importing a user domain license, where the copyright issuer receives an import user domain license request initiated by a local license manager; the import user domain license request carries a user domain identifier, and the local license manager Identifying; the copyright issuer requests the domain manager to obtain the user domain information according to the user domain identifier; the copyright issuer verifies the local license manager according to the user domain information and the local license manager identifier, and generates a domain license; The copyright issuer returns the domain license to the local license manager.
  • the embodiment of the present invention further provides a method for importing a user domain license, and the local license manager initiates an import user domain license request to the copyright issuer; the import user domain license request carries the user domain identifier, and the local license manager identifier
  • the copyright issuer requests the domain manager to obtain the user domain information according to the user domain identifier, where the request carries a local license manager identifier; the domain manager returns user domain information to the copyright issuer, the user domain information Including an authentication by the local license manager; the copyright issuer generates a domain license based on the user domain information and returns an import user domain license to the local license manager.
  • the embodiment of the present invention further provides a domain management server, including: a receiving module, configured to receive a request message for acquiring user domain information, where the request message carries a local license manager identifier and a domain identifier; Verifying that the local license manager is legal according to the local license manager identifier; and outputting a module, configured to return user domain information of the domain according to the domain identifier, where the user domain information includes: a domain identifier, a domain key One or more of the associated information, the domain policy, and the identity passed by the local license manager.
  • an embodiment of the present invention further provides a license server, including: a receiving module, configured to receive a request for importing a domain license, where the request for importing a domain license carries a local license a manager identifier, a domain identifier, configured to acquire user domain information of the user domain according to the domain identifier, where the user domain information includes a domain identifier, domain key related information, a domain policy, and a local license manager One or more of the identifiers; a verification module, the user validating the local license manager corresponding to the local license manager identifier according to the local license manager identifier list and the local license manager identifier; processing module, user Generating a domain license according to the user domain information; and outputting a module, configured to return the domain license.
  • a receiving module configured to receive a request for importing a domain license, where the request for importing a domain license carries a local license a manager identifier, a domain identifier, configured to acquire user domain information of the user
  • the embodiment of the present invention can actively push the user domain information to the copyright issuer when the user domain information is changed by the DA/DEA, so as to facilitate the copyright issuer to use in the subsequent processing. No longer to the user domain information
  • DA/DEA acquisition ensures the accuracy of the information and ensures the simplicity of the message during subsequent processing.
  • 1 is a flow chart of a method for obtaining a domain license by an existing DRM Agent
  • FIG. 2 is a flowchart of a method for a DA/DEA to actively send user domain information to an RI according to an embodiment of the present invention
  • FIG. 3 is a flowchart of a method for a DA/DEA active trigger RI to acquire user domain information according to an embodiment of the present invention
  • FIG. 5 is a flowchart of a method for distributing a domain license according to an embodiment of the present invention
  • FIG. 6 is a schematic diagram of an LRM requesting an import domain license to an RI according to an embodiment of the present invention, and an RI direction
  • FIG. 7 is a schematic structural diagram of a domain management server according to an embodiment of the present invention
  • FIG. 8 is a schematic structural diagram of a license server according to an embodiment of the present invention. detailed description
  • the method for the DA/DEA to actively send user domain information to the RI includes the following steps:
  • Step S201 The RI interacts with the DA/DEA to complete registration of the DA/DEA in the RI.
  • the related operations include establishing a new user domain, updating, upgrading, deleting an existing user domain, and updating the LRM in the user domain; the related operations of this step will result in changes and updates of the user domain information.
  • Step S203 The DA/DEA sends a user domain information notification to the RI, where the user domain information notification carries the updated user domain information or all user domain information; the user domain information includes but is not limited to the domain identifier (including domain algebra) ), domain key related information, maximum number of members in the domain, domain policy, local license manager (LRM) list trusted by DA/DEA, etc.
  • the domain information includes but is not limited to the domain identifier (including domain algebra) ), domain key related information, maximum number of members in the domain, domain policy, local license manager (LRM) list trusted by DA/DEA, etc.
  • Step S204 The RI returns a user domain information response to the DA/DEA, where the processing status of the user domain information notification message is included.
  • Step S205 The RI updates the stored user domain information by using the updated user domain information in the received user domain information notification.
  • step S204 and step S205 are not strictly ordered.
  • the RI may of course perform step S205 after receiving the user domain information notification, and then perform step S204 to return a user domain information response to the DA/DEA.
  • the DA/DEA can also actively trigger the RI to obtain the domain information.
  • the specific process is shown in Figure 3. Unlike the flow shown in Figure 2, the DRM Agent performs step S302. User domain changed after user domain related operations Information.
  • the DA/DEA does not directly send the updated user domain information to the RI through the user domain information notification as shown in step S202 of FIG.
  • step S203 but sends a trigger message of the usage domain to the RI by step S203.
  • the domain request is sent to the DA/DEA.
  • the DA/DEA returns a usage domain response to the RI according to the usage domain request, and the usage domain response carries the updated user domain information.
  • the RI updates the locally stored user domain information according to the user domain information carried in the received domain response.
  • DA/DEA can be registered with multiple RIs, such as RI-A and RI-B, which can generate domain licenses for DA/DEA domains.
  • the DA/DEA can update the user domain information to multiple RIs such as RI-A and RI-B, respectively, using the method shown in FIG. 2 or FIG. 3, and RI-A and The RI-B separately updates the user domain information stored locally according to the obtained user domain information.
  • RI_A or RI_B
  • RI_A or RI_B
  • RI_A can generate a corresponding domain license according to the locally saved user domain information.
  • DA/DEA can pass the user domain information of UD1 to RI during registration with RI; or after registration is completed, The method shown in steps S203-S204 or steps S303-S305 notifies the license server of the user domain information of UD1.
  • the DA/DEA when a domain upgrade occurs, sends a user domain information to the RI.
  • the method includes the following steps:
  • Step S401 In the case that the domain key is leaked, or a domain member is revoked, the DA/DEA upgrades the user domain for the security of the user domain. After the upgrade, the domain's algebra will be incremented by 1, and the old domain key will be replaced so that only the DRM Agent with the old domain key cannot decrypt and consume the newly generated domain license after the domain upgrade.
  • the hash key is used to maintain the domain key. Will the last of the hash chain The first-level node acts as the first-generation domain key, and each time the upgrade is performed, the node in the upper-level hash chain is used as the new domain key, and so on.
  • Step S402 The DA/DEA notifies all DRM Agents in the domain to perform domain upgrade. After the upgrade, the DRM Agent in the domain shares the new domain key.
  • Step S403 The DA/DEA sends the updated user domain information to the RI through the user domain information notification.
  • the DA/DEA may only send the changed user domain information to the RI, or may send all user domain information.
  • the user domain information carried in the message includes at least: a domain identifier, a domain algebra, and a domain key related information.
  • the domain algebra can also be reflected in the domain identifier, that is, the domain identifier and the domain algebra can be represented by the same parameter;
  • the domain key related information can be a domain key used to encrypt the license encapsulation key, or can be used for generating Information about the domain key.
  • Step S404 The RI updates the locally saved domain information according to all or part of the user domain information carried in the user domain information.
  • Step S405 The RI returns a user domain information response, where the response includes a processing status of the RI to the user domain information notification message.
  • step S402 can notify the DRM Agent in the domain to upgrade first, or send the user domain information notification to the RI first, and can also send it at the same time.
  • the user domain operation can also be to delete the user domain, establish a user domain, or update the user domain.
  • the DA/DEA sends a user domain information deletion message to the RI in step S403, the message does not need to carry the user domain information related parameter, and the RI is deleted according to the DA/DEA notification. Save local user domain information.
  • the DA/DEA sends the updated user domain information to the RI through the user domain information notification in step S403, and the user domain information notification includes at least the user domain identifier, the user domain policy. .
  • the user domain information notification in step S403 may include all the information of the user domain information.
  • the domain manager may send the existing user domain information to the copyright issue by the following method. Transmitting the user domain information already existing in the domain manager to the copyright issuer during registration with the copyright issuer; or the domain manager actively sends the existing user domain information to the copyright issuer after the registration is completed. Copyright issuer.
  • the method for distributing a domain license includes the following steps:
  • Step S501 The RI and the DA/DEA interact to complete the registration.
  • Step S502 According to any of the methods described in FIG. 2 to FIG. 4, the RI and the DA/DEA interact to obtain user domain information from the DA/DEA; the user domain information includes but is not limited to: a domain identifier, including a domain algebra, Domain key related information, maximum number of members in the domain, domain policy, local license manager (LRM) list trusted by DA/DEA, etc. Alternatively, the domain information includes a domain identifier (including domain algebra), domain key related information, a maximum number of members in the domain, a domain policy, a local license manager (LRM) list trusted by the DA/DEA, and the like.
  • a domain identifier including domain algebra
  • domain key related information a maximum number of members in the domain
  • a domain policy a local license manager (LRM) list trusted by the DA/DEA
  • Step S503 The RI saves the user domain information obtained from the DA/DEA.
  • Step S504 The RI receives a domain license acquisition request sent by the DRM Agent to the RI.
  • the domain license acquisition request includes information such as a DRM Agent identifier, a domain identifier, and the like.
  • Step S505 The RI generates a domain license according to the saved user domain information acquired in advance from the DA/DEA.
  • Step S506 The RI returns a domain license acquisition response to the DRM Agent, where the domain license generated in step S505 is included.
  • step S501 - step S503 is not a required step.
  • the embodiment of the present invention may also indicate that the RI requests the process of importing the domain license for the user domain according to the import domain permission request of the LRM.
  • the RI receives an import domain permission request sent by the LRM to the RI; and the import domain permission request includes information such as an LRM identifier, a domain identifier, and the like.
  • Step S505 The RI generates a domain license according to the saved user domain information acquired from the DA/DEA in advance; of course, the RI further needs to determine, according to the LRM identifier carried in the import domain permission request and the LRM identifier list stored in the local user domain information. Whether the LRM is authorized to import the domain license of the user domain, and after the LRM passes the verification, the RI generates the imported domain license according to the saved user domain information acquired in advance from the DA/DEA.
  • Step S506 The RI returns an import and license response to the LRM, which includes the imported domain license generated in step S505.
  • FIG. 6 a flowchart of a method for obtaining an latest user domain information by the RI from the LRM to the RI by requesting the LRM to the DA/DEA is provided.
  • Step S601 The LRM requests the RI to import a domain license for the user domain.
  • the request will include the LRM ID, the domain ID, and the permission information used to generate the domain license.
  • Step S602 The RI initiates a use domain request message to the DA/DEA, and is used for requesting the DA/DEA to generate the user domain information required for the domain license, including the domain key related information, the domain policy, and the like.
  • the request carries an LRM identifier and a domain identifier, and is used by the DA/DEA to verify whether the LRM is an LRM allocated by the DA/DEA for the user domain, and the function may also be obtained by the DA/DEA in the user domain information.
  • the response carries the LRM identifier assigned to the user language, and is verified by the RI itself.
  • the use domain response message should also include the latest user domain information, including: domain identifier, domain key related information, Domain algebra, domain policy.
  • the identifier of the LRM can be included, where the domain algebra can also be reflected in the domain identifier, that is, the domain identifier and the domain algebra can be represented as the same parameter; the domain key related information can be used to encrypt the license encapsulation
  • the domain key of the key which may also be related information for generating the domain key;
  • the domain policy is a set of rules defined by the DA for the user domain, such as the size of the domain, the lifetime of the domain, whether Allow domain splitting/merging, etc.
  • the use domain request message sent by the RI to the DA/DEA may not carry the LRM identifier, and in step S603, the DA/DEA does not need the user domain information of the LRM identifier list, and the RI is according to the LRM.
  • the list of identifiers self-verifies whether the LRM is legal.
  • Step S604 The RI validates the adopted identifier according to the LRM, and generates a corresponding domain license according to the domain identifier, the domain key related information, the domain size, and the like obtained in step S603, where the domain key is used to encapsulate the license encryption key,
  • the domain size can be used by the RI to determine the charging criteria for the license.
  • the RI may set an expiration date for the locally saved user domain information.
  • the RI is
  • the DA/DEA requests to obtain new user domain information and update the local user domain information.
  • the embodiment of the present invention further provides a domain management server, as shown in FIG. 7, comprising: a receiving module, configured to receive a request message of a domain, where the request message carries a local license manager identifier and a domain identifier; a module, configured to verify, according to the local license manager identifier, that the local license manager is legal; an output module, configured to return user domain information of the domain according to the domain identifier, where the user domain information includes: a domain identifier, One or more of the domain key related information, the domain policy, and the identity passed by the local license manager.
  • a domain management server as shown in FIG. 7, comprising: a receiving module, configured to receive a request message of a domain, where the request message carries a local license manager identifier and a domain identifier; a module, configured to verify, according to the local license manager identifier, that the local license manager is legal; an output module, configured to return user domain information of the domain according to the domain identifier, where the user domain information
  • an embodiment of the present invention further provides a license server, as shown in FIG. 8, including: a receiving module, configured to receive a request for importing a domain license, where the request for importing a domain license carries a local license manager identifier and a domain identifier, and an obtaining module, configured to acquire user domain information of the user domain according to the domain identifier,
  • the user domain information includes one or more of a domain identifier, domain key related information, a domain policy, and an identifier passed by the local license manager; a verification module, the user according to the local license manager identifier list and the local license
  • the manager identifier verifies that the local license manager corresponding to the local license manager identifier is legal; the processing module, the user generates a domain license according to the user domain information; and an output module, configured to return the domain license.

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Abstract

L'invention concerne un procédé servant à acquérir des informations d'un domaine d'utilisateur comprenant les étapes suivantes : des opérations liées à un domaine d'utilisateur mises en place par un serveur de gestion de domaine entraînent le changement des informations d'un domaine d'utilisateur ; le serveur de gestion de domaine transmet préalablement les informations changées d'un domaine d'utilisateur à un éditeur des droits d'auteur. Un procédé pour commander une permission d'un domaine d'utilisateur, un serveur de gestion de domaine et un serveur de licence utilisent le procédé. Selon la présente invention, les informations d'un domaine d'utilisateur pourraient être transmises préalablement à l'éditeur des droits d'auteur de sorte qu'il ne se tourne pas vers DA/DEA pour une acquisition lorsque l'éditeur des droits d'auteur a besoin d'utiliser les informations d'un domaine d'utilisateur dans le processus suivant.
PCT/CN2008/070924 2007-06-06 2008-05-09 Procédé servant à acquérir des informations d'un domaine d'utilisateur, serveur de gestion de domaine et serveur de licence WO2008148325A1 (fr)

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CN200710074739.7A CN101321155B (zh) 2007-06-06 2007-06-06 一种获取用户域信息的方法、域管理服务器及许可服务器
CN200710074739.7 2007-06-06

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WO2008148325A1 true WO2008148325A1 (fr) 2008-12-11

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Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1758593A (zh) * 2004-10-10 2006-04-12 大唐移动通信设备有限公司 多媒体组播业务的业务密钥更新方法
CN1878092A (zh) * 2006-07-12 2006-12-13 华为技术有限公司 域管理系统、建立本地域的方法和获取本地域许可的方法

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1163023C (zh) * 2002-11-08 2004-08-18 华为技术有限公司 一种网桥之间的数据传输方法

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1758593A (zh) * 2004-10-10 2006-04-12 大唐移动通信设备有限公司 多媒体组播业务的业务密钥更新方法
CN1878092A (zh) * 2006-07-12 2006-12-13 华为技术有限公司 域管理系统、建立本地域的方法和获取本地域许可的方法

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CN101321155A (zh) 2008-12-10

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