Invention Grant
US09015479B2 Host device and method for super-distribution of content protected with a localized content encryption key
有权
用本地化内容加密密钥保护的内容超级分发的主机设备和方法
- Patent Title: Host device and method for super-distribution of content protected with a localized content encryption key
- Patent Title (中): 用本地化内容加密密钥保护的内容超级分发的主机设备和方法
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Application No.: US13328823Application Date: 2011-12-16
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Publication No.: US09015479B2Publication Date: 2015-04-21
- Inventor: Fabrice E. Jogand-Coulomb , Henry R. Hutton , Jason T. Lin , Joseph E. Halpern , Rotem Sela
- Applicant: Fabrice E. Jogand-Coulomb , Henry R. Hutton , Jason T. Lin , Joseph E. Halpern , Rotem Sela
- Applicant Address: US TX Plano
- Assignee: SanDisk Technologies Inc.
- Current Assignee: SanDisk Technologies Inc.
- Current Assignee Address: US TX Plano
- Agency: Brinks Gilson & Lione
- Main IPC: H04L9/14
- IPC: H04L9/14 ; H04L9/08 ; G06F21/10

Abstract:
In one embodiment, a host device creates a super-distribution token by encrypting a content encryption key with a super-distribution key and stores the super-distribution token and encrypted content retrieved from a source storage device in a target storage device. In another embodiment, a host device provides a super-distribution token to a server, wherein the server is configured to generate an activation token from the super-distribution token, receive the activation token from the server, retrieve a content encryption key from the activation token, and decrypt encrypted content received from a storage device using the content encryption key retrieved from the activation token.
Public/Granted literature
Information query