公开(公告)号：US20100306485A1

公开(公告)日：2010-12-02

申请号：US12473102

申请日：2009-05-27

申请人： Kedarnath A. Dubhashi ,  Reid Joseph Kuhn

发明人： Kedarnath A. Dubhashi ,  Reid Joseph Kuhn

IPC分类号： G06F12/16

CPC分类号： H04L63/10 ,  G06F21/10 ,  G06F21/105 ,  G06F2221/2107 ,  G06F2221/2115 ,  H04L29/12047 ,  H04L61/15 ,  H04L63/062 ,  H04L2463/101

摘要： A system is disclosed for providing trusted third-party management of user device domains in a digital rights management environment. The system includes a plurality of content providers that distribute digital content items via user accounts having associated user device domains. The user device domains are managed by an independent domain manager. The domain manager includes a device registrar which is operative, for a given user device domain, to receive a request to add a device to the user device domain. If the request is grantable, a domain controller of the domain manager is operative to cause a domain private key to be transmitted to the device being added to the user device domain. The domain private key is usable at the device to decrypt a content key which was previously released to the user device domain for decrypting protected digital content.

摘要翻译： 公开了一种用于在数字版权管理环境中提供用户设备域的受信任的第三方管理的系统。 该系统包括通过具有相关联的用户设备域的用户帐户分发数字内容的多个内容提供商。 用户设备域由独立的域管理器管理。 域管理器包括设备注册器，对于给定的用户设备域，该设备注册器可以接收向用户设备域添加设备的请求。 如果请求是可授权的，则域管理器的域控制器可操作地使域私有密钥被发送到被添加到用户设备域的设备。 域私钥在设备上可用于解密之前已被释放到用户设备域以解密受保护的数字内容的内容密钥。

公开(公告)号：US20090310789A1

公开(公告)日：2009-12-17

申请号：US12137513

申请日：2008-06-11

申请人： Yu Lin Sie ,  Kedarnath A. Dubhashi ,  Anand D. Paka

发明人： Yu Lin Sie ,  Kedarnath A. Dubhashi ,  Anand D. Paka

IPC分类号： H04L9/08

CPC分类号： H04L63/0823 ,  H04L9/3263 ,  H04L2209/603

摘要： Various embodiments enable so-called extended data to be added to a signed digital certificate without having a private key of a Certification Authority available. In at least some embodiments, a digital certificate can be issued and signed off line by the Certification Authority, and then later extended data can be added and signed using another key, whose public key was earlier embedded and signed in the certificate.

摘要翻译： 各种实施例使得能够将所谓的扩展数据添加到签名的数字证书，而不必具有证书颁发机构的私钥。 在至少一些实施例中，数字证书可以由证书颁发机构发行和签出，然后可以使用其公钥较早嵌入并签入证书的其他密钥来添加和签名以后的扩展数据。