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1. 发明授权

US09225520B2 System and method for deterministic generation of a common content encryption key on distinct encryption units 有权
标题翻译：用于在不同加密单元上确定性地生成公共内容加密密钥的系统和方法
公开(公告)号：US09225520B2
公开(公告)日：2015-12-29
申请号：US12790512
申请日：2010-05-28
申请人： Noam Lorberbaum , Sunil C. Agrawal , Katherine K. Nadell
发明人： Noam Lorberbaum , Sunil C. Agrawal , Katherine K. Nadell
IPC分类号： H04L9/08 , H04N21/254 , H04N21/4405 , H04N21/4627 , H04N21/2347
CPC分类号： H04L9/0861 , H04L2209/60 , H04N21/23476 , H04N21/2541 , H04N21/4405 , H04N21/4627
摘要： Various embodiments of a system and method for deterministic generation of a common content encryption key on distinct encryption units are described. Embodiments may include, for each given content item of multiple content items that represent one or more portions of a common media object, controlling a different encryption unit of multiple distinct encryption units to i) generate a content encryption key for the given content item based on: a common base secret shared by the multiple distinct encryption units, and an identifier specific to the media object, and ii) encrypt the given content item with the respective content encryption key generated for that content item in order to generate a respective encrypted content item. Each content encryption key generated for a given content item may be equivalent to each other content encryption key such that decryption of each encrypted content item requires a common decryption key.
摘要翻译：描述用于在不同的加密单元上确定性地生成公共内容加密密钥的系统和方法的各种实施例。对于表示公共媒体对象的一个或多个部分的多个内容项目的每个给定内容项目，实施例可以包括控制多个不同加密单元的不同加密单元，以便i）基于以下内容生成给定内容项目的内容加密密钥：：由多个不同的加密单元共享的公共基本秘密，以及媒体对象特有的标识符，以及ii）使用针对该内容项目生成的相应内容加密密钥对给定内容项进行加密，以便生成相应的加密内容项。为给定内容项生成的每个内容加密密钥可以等同于彼此的内容加密密钥，使得每个加密的内容项的解密需要公用解密密钥。

2. 发明申请

US20130121487A1 System And Method For Deterministic Generation Of A Common Content Encryption Key On Distinct Encryption Units 有权
标题翻译：用于确定性生成不同加密单元的公共内容加密密钥的系统和方法
公开(公告)号：US20130121487A1
公开(公告)日：2013-05-16
申请号：US12790512
申请日：2010-05-28
申请人： Noam Lorberbaum , Sunil C. Agrawal , Katherine K. Nadell
发明人： Noam Lorberbaum , Sunil C. Agrawal , Katherine K. Nadell
IPC分类号： H04L9/06
CPC分类号： H04L9/0861 , H04L2209/60 , H04N21/23476 , H04N21/2541 , H04N21/4405 , H04N21/4627
摘要： Various embodiments of a system and method for deterministic generation of a common content encryption key on distinct encryption units are described. Embodiments may include, for each given content item of multiple content items that represent one or more portions of a common media object, controlling a different encryption unit of multiple distinct encryption units to i) generate a content encryption key for the given content item based on: a common base secret shared by the multiple distinct encryption units, and an identifier specific to the media object, and ii) encrypt the given content item with the respective content encryption key generated for that content item in order to generate a respective encrypted content item. Each content encryption key generated for a given content item may be equivalent to each other content encryption key such that decryption of each encrypted content item requires a common decryption key.
摘要翻译：描述用于在不同的加密单元上确定性地生成公共内容加密密钥的系统和方法的各种实施例。对于表示公共媒体对象的一个或多个部分的多个内容项目的每个给定内容项目，实施例可以包括控制多个不同加密单元的不同加密单元，以便i）基于以下内容生成给定内容项目的内容加密密钥：：由多个不同的加密单元共享的公共基本秘密，以及媒体对象特有的标识符，以及ii）使用针对该内容项目生成的相应内容加密密钥对给定内容项进行加密，以便生成相应的加密内容项。为给定内容项生成的每个内容加密密钥可以等同于彼此的内容加密密钥，使得每个加密的内容项的解密需要公用解密密钥。

3. 发明申请

US20130132733A1 System And Method For Digital Rights Management With System Individualization 审中-公开
标题翻译：系统个性化数字权限管理系统与方法
公开(公告)号：US20130132733A1
公开(公告)日：2013-05-23
申请号：US12472155
申请日：2009-05-26
申请人： Sunil C. Agrawal , Katherine K. Nadell , Kunal D. Shah
发明人： Sunil C. Agrawal , Katherine K. Nadell , Kunal D. Shah
IPC分类号： G06F21/00
CPC分类号： G06F21/10
摘要： Various embodiments of a system and method for digital rights management with system individualization are described. In various embodiments, a DRM component may generate a request for machine-specific credentials specific to the system on which the DRM component is implemented. This request may include device information of component(s) of such system. The DRM component may also receive an encrypted response that includes the machine-specific credentials. This encrypted response may be encrypted with a machine-specific encryption key generated from the device information. In various embodiments the response may be generated by an individualization server that verified the request for machine-specific credentials. The DRM component may also, based on the device information of the system on which the DRM component is implemented, generate an encryption key equivalent to the machine-specific encryption key with which the received response is encrypted. The DRM component may decrypt the encrypted response with the generated encryption key.
摘要翻译：描述了具有系统个性化的用于数字版权管理的系统和方法的各种实施例。在各种实施例中，DRM组件可以生成对实现DRM组件的系统特有的机器特定凭证的请求。该请求可以包括这种系统的组件的设备信息。 DRM组件还可以接收包括机器特定凭证的加密响应。可以使用从设备信息生成的机器特定的加密密钥来加密该加密的响应。在各种实施例中，响应可以由验证机器特定证书的请求的个性化服务器生成。 DRM组件还可以基于其上实现DRM组件的系统的设备信息，生成与所接收的响应被加密的机器专用加密密钥相等的加密密钥。 DRM组件可以利用生成的加密密钥对加密的响应进行解密。

4. 发明授权

US08347087B1 Support for multiple digital rights management systems for same content 有权
标题翻译：支持相同内容的多个数字版权管理系统
公开(公告)号：US08347087B1
公开(公告)日：2013-01-01
申请号：US13205583
申请日：2011-08-08
申请人： Sunil C. Agrawal , Katherine K. Nadell , Viswanathan Swaminathan
发明人： Sunil C. Agrawal , Katherine K. Nadell , Viswanathan Swaminathan
IPC分类号： H04L9/00 , H04L9/32 , H04N7/167
CPC分类号： H04N21/835 , H04L63/0428 , H04L2463/101 , H04N7/1675 , H04N21/2541 , H04N21/4405 , H04N21/4627 , H04N21/8355
摘要： Techniques, systems, and apparatus, including medium-encoded computer program products, for protecting a document with multiple digital rights management systems are presented. A described technique includes encrypting content in accordance with a first digital rights management scheme using a key and an encryption scheme, generating a first header associated with the encrypted content in accordance with the first digital rights management scheme, generating a second header associated with the encrypted content in accordance with a second digital rights management scheme, and creating a protected document that includes the first header, the second header, and the encrypted content.
摘要翻译：提出了用于保护具有多个数字版权管理系统的文档的技术，系统和装置，包括中等编码的计算机程序产品。所描述的技术包括使用密钥和加密方案根据第一数字版权管理方案加密内容，根据第一数字版权管理方案生成与加密内容相关联的第一标题，生成与加密的第二标题相关联的第二标题内容，并且创建包括第一标题，第二标题和加密内容的受保护文档。

5. 发明申请

US20130132232A1 System And Method For Digital Rights Management With Delegated Authorization For Content Access 审中-公开
标题翻译：用于内容访问的授权授权的数字版权管理系统和方法
公开(公告)号：US20130132232A1
公开(公告)日：2013-05-23
申请号：US12545578
申请日：2009-08-21
申请人： Florian Pestoni , Pritham Shetty , Sunil C. Agrawal , Katherine K. Nadell
发明人： Florian Pestoni , Pritham Shetty , Sunil C. Agrawal , Katherine K. Nadell
IPC分类号： G06Q50/00 , G06Q30/00 , G06F21/00
CPC分类号： G06F21/10 , G06F2221/2117 , G06F2221/2141 , H04L63/10 , H04L63/108 , H04L2463/101
摘要： Various embodiments of a system and method for digital rights management with delegated authorization for content access are described. Such embodiments may include a runtime component configured to receive protected content. The runtime component may be configured to submit a request for a delegation token to a first entity, such as a content merchant or some other entity. The runtime component may be configured to receive the delegation token from the first entity. The runtime component may also be configured to submit a request for a content license for the protected content to a second entity, such as an access coordinator or some other entity. The submitted request may include the received delegation token. The runtime component may be configured to receive the content license from the second entity. The runtime component may also be configured to provide access to the protected content in accordance with the received content license.
摘要翻译：描述了具有用于内容访问的委托授权的数字版权管理的系统和方法的各种实施例。这样的实施例可以包括被配置为接收受保护内容的运行时组件。运行时组件可以被配置为向诸如内容商家或某个其他实体的第一实体提交授权令牌的请求。可以将运行时组件配置为从第一实体接收委托令牌。运行时组件还可以被配置为向第二实体（诸如访问协调器或某个其他实体）提交对受保护内容的内容许可的请求。提交的请求可以包括接收到的委托令牌。运行时组件可以被配置为从第二实体接收内容许可证。运行时组件还可以被配置为根据接收到的内容许可证提供对受保护内容的访问。

6. 发明授权

US07996672B1 Support for multiple digital rights management systems for same content 有权
标题翻译：支持相同内容的多个数字版权管理系统
公开(公告)号：US07996672B1
公开(公告)日：2011-08-09
申请号：US11951266
申请日：2007-12-05
申请人： Sunil C. Agrawal , Katherine K. Nadell , Viswanathan Swaminathan
发明人： Sunil C. Agrawal , Katherine K. Nadell , Viswanathan Swaminathan
IPC分类号： H04L9/00 , H04L9/32 , H04N7/167
CPC分类号： H04N21/835 , H04L63/0428 , H04L2463/101 , H04N7/1675 , H04N21/2541 , H04N21/4405 , H04N21/4627 , H04N21/8355
摘要： Methods, systems, and apparatus, including medium-encoded computer program products, for protecting a document with multiple digital rights management systems are presented. One or more aspects of the subject matter described in this specification can be embodied in one or more methods of protecting a document with multiple digital rights management systems, the one or more methods including: obtaining a document, wherein the document includes encrypted content and a first header, wherein the encrypted content has been encrypted in accordance with a first digital rights management scheme using a key and an encryption scheme, wherein the first header was generated in accordance with the first digital rights management scheme in association with the encrypted content; producing a second header associated with the encrypted content in accordance with a second digital rights management scheme; and creating a protected document including the first header, the second header, and the encrypted content.
摘要翻译：提出了用于保护具有多个数字版权管理系统的文档的方法，系统和装置，包括中等编码的计算机程序产品。本说明书中描述的主题的一个或多个方面可以体现在用多个数字版权管理系统保护文档的一种或多种方法中，所述一种或多种方法包括：获得文档，其中所述文档包括加密的内容和第一标题，其中根据使用密钥和加密方案的第一数字版权管理方案已经加密了加密内容，其中根据与加密内容相关联的第一数字版权管理方案生成第一标题; 根据第二数字版权管理方案产生与加密内容相关联的第二标题; 以及创建包括第一标题，第二标题和加密内容的受保护文档。

7. 发明申请

US20140289525A1 SYSTEM AND METHOD FOR DECENTRALIZED MANAGEMENT OF KEYS AND POLICIES 有权
标题翻译：科学与政策分散化管理系统与方法
公开(公告)号：US20140289525A1
公开(公告)日：2014-09-25
申请号：US12550264
申请日：2009-08-28
申请人： Sunil C. Agrawal , Katherine K. Nadell
发明人： Sunil C. Agrawal , Katherine K. Nadell
IPC分类号： H04L9/32 , H04L9/08 , G06F21/00
CPC分类号： H04L9/0869 , H04L9/0822 , H04L9/0866 , H04L2209/603
摘要： Various embodiments of a system and method for decentralized management of keys and policies are described. Various embodiments may include a computer system configured to receive a request from a remote computer system associated with a recipient of content. Such request may include an encrypted content encryption key that is encrypted with a packaging key utilized by a packaging entity. The request may also include an identifier identifying the packaging entity. In some embodiments, the request may also include policy information specifying one or more usage rights of the content. The computer system may be configured to, in response to determining the recipient is authorized to access the content, generate the packaging key based on the identifier and a secret root seed, utilize the generated packaging key to decrypt the encrypted content encryption key, and provide the decrypted content encryption key to the remote computer system.
摘要翻译：描述了密钥和策略的分散管理的系统和方法的各种实施例。各种实施例可以包括被配置为从与内容的接收者相关联的远程计算机系统接收请求的计算机系统。这样的请求可以包括用包装实体利用的包装密钥加密的加密内容加密密钥。该请求还可以包括识别包装实体的标识符。在一些实施例中，请求还可以包括指定内容的一个或多个使用权限的策略信息。计算机系统可以被配置为响应于确定接收者被授权访问内容，基于标识符和秘密根种子生成包装密钥，利用生成的包装密钥来解密加密的内容加密密钥，并且提供解密的内容加密密钥到远程计算机系统。

8. 发明授权

US08831228B1 System and method for decentralized management of keys and policies 有权
标题翻译：密钥和政策分散管理的系统和方法
公开(公告)号：US08831228B1
公开(公告)日：2014-09-09
申请号：US12550264
申请日：2009-08-28
申请人： Sunil C. Agrawal , Katherine K. Nadell
发明人： Sunil C. Agrawal , Katherine K. Nadell
IPC分类号： H04L9/08
CPC分类号： H04L9/0869 , H04L9/0822 , H04L9/0866 , H04L2209/603
摘要： Various embodiments of a system and method for decentralized management of keys and policies are described. Various embodiments may include a computer system configured to receive a request from a remote computer system associated with a recipient of content. Such request may include an encrypted content encryption key that is encrypted with a packaging key utilized by a packaging entity. The request may also include an identifier identifying the packaging entity. In some embodiments, the request may also include policy information specifying one or more usage rights of the content. The computer system may be configured to, in response to determining the recipient is authorized to access the content, generate the packaging key based on the identifier and a secret root seed, utilize the generated packaging key to decrypt the encrypted content encryption key, and provide the decrypted content encryption key to the remote computer system.
摘要翻译：描述了密钥和策略的分散管理的系统和方法的各种实施例。各种实施例可以包括被配置为从与内容的接收者相关联的远程计算机系统接收请求的计算机系统。这样的请求可以包括用包装实体利用的包装密钥加密的加密内容加密密钥。该请求还可以包括识别包装实体的标识符。在一些实施例中，请求还可以包括指定内容的一个或多个使用权限的策略信息。计算机系统可以被配置为响应于确定接收者被授权访问内容，基于标识符和秘密根种子生成包装密钥，利用生成的包装密钥来解密加密的内容加密密钥，并且提供解密的内容加密密钥到远程计算机系统。

9. 发明授权

US08185741B1 Converting transport level transactional security into a persistent document signature 有权
标题翻译：将传输级别的事务安全性转换为持久性文档签名
公开(公告)号：US08185741B1
公开(公告)日：2012-05-22
申请号：US11344293
申请日：2006-01-30
申请人： Sunil C. Agrawal , Jagriti Uppal , Joseph Steele
发明人： Sunil C. Agrawal , Jagriti Uppal , Joseph Steele
IPC分类号： H04L9/32
CPC分类号： H04L9/3247 , H04L51/066 , H04L51/08 , H04L63/126
摘要： Briefly, in accordance with one or more embodiments, a transport level transactional security may be converted into a persistent document signature. In one embodiment, a digital signature of an electronic mail message may be saved in a file attached to the electronic mail message. The file with the added digital signature may be saved, transmitted, received, and/or otherwise utilized independent of the original electronic mail message. A receiving node may verify the identity of an originating node based at least in part on the digital signature contained in the file. In alternative embodiment, the signature for the file may be generated at least in part on a message to be transmitted according to a secure transmission and/or file download protocol from a server to a client.
摘要翻译：简而言之，根据一个或多个实施例，传输级别事务安全性可被转换为持久性文档签名。在一个实施例中，电子邮件消息的数字签名可以保存在附加到电子邮件消息的文件中。具有附加数字签名的文件可以独立于原始电子邮件消息被保存，发送，接收和/或以其它方式使用。接收节点可以至少部分地基于文件中包含的数字签名来验证始发节点的身份。在替代实施例中，文件的签名可以至少部分地基于要从服务器到客户端的安全传输和/或文件下载协议来发送的消息来生成。

10. 发明申请

US20110185179A1 System And Method For Digital Rights Management With A Lightweight Digital Watermarking Component 审中-公开
标题翻译：使用轻量级数字水印部件进行数字版权管理的系统和方法
公开(公告)号：US20110185179A1
公开(公告)日：2011-07-28
申请号：US12548228
申请日：2009-08-26
申请人： Viswanathan Swaminathan , Sunil C. Agrawal
发明人： Viswanathan Swaminathan , Sunil C. Agrawal
IPC分类号： H04L9/32 , H04N7/167
CPC分类号： G06F21/10
摘要： Various embodiments of a system and method for digital rights management with a lightweight digital watermarking component are described. Embodiments may include methods as well as elements for performing such methods. Such a method may include receiving content onto a computer system; the computer system may include a runtime component configured to consume the content. The method may include receiving a digital watermarking component on the computer system. The digital watermarking component may specify information for generating a digital watermark on the content. The method may include applying a digital watermark to the content with the runtime component in order to generate watermarked content. The digital watermark may be applied by the runtime component in accordance with the digital watermarking component. In various embodiments, the received runtime component may be configured to prevent the received content from being consumed without the digital watermark applied to the received content.
摘要翻译：描述了使用轻量级数字水印部件进行数字版权管理的系统和方法的各种实施例。实施例可以包括用于执行这种方法的方法以及元件。这种方法可以包括将内容接收到计算机系统上; 计算机系统可以包括被配置为消费内容的运行时组件。该方法可以包括在计算机系统上接收数字水印分量。数字水印分量可以指定用于在内容上生成数字水印的信息。该方法可以包括将数字水印应用于具有运行时组件的内容，以便生成带水印的内容。数字水印可以由运行时分量根据数字水印分量来应用。在各种实施例中，所接收的运行时间组件可以被配置为防止在没有将数字水印应用于所接收的内容的情况下被消费。

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