Invention Grant
US08972723B2 Storage device and method for providing a partially-encrypted content file to a host device
有权
用于向主机设备提供部分加密的内容文件的存储设备和方法
- Patent Title: Storage device and method for providing a partially-encrypted content file to a host device
- Patent Title (中): 用于向主机设备提供部分加密的内容文件的存储设备和方法
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Application No.: US12836049Application Date: 2010-07-14
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Publication No.: US08972723B2Publication Date: 2015-03-03
- Inventor: Henry R. Hutton
- Applicant: Henry R. Hutton
- 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: H04L29/00
- IPC: H04L29/00 ; G06F21/85 ; H04N21/2347 ; G06F21/10 ; G06F21/78 ; H04L29/06 ; H04L29/08

Abstract:
A storage device and method for providing a partially-encrypted content file to a host device are provided. In one embodiment, the storage device retrieves a content file from memory in the storage device and partially-encrypts the content file by encrypting some portions of the content file. The storage device sends the partially-encrypted content file to a host device and informs the host device of which portions of the partially-encrypted content file are encrypted. In one embodiment, the remaining portions of the content file are in clear text form and do not need to be decrypted. Because the host device only needs to decrypt the portions of the content file that are encrypted—and not the entire content file—the host device can decrypt the partially-encrypted content file, even if it does not have the processing power to decrypt a fully-encrypted version. In another embodiment, at least some of the remaining portions of the content file are encrypted with at least one additional key.
Public/Granted literature
- US20120017084A1 Storage Device and Method for Providing a Partially-Encrypted Content File to a Host Device Public/Granted day:2012-01-19
Information query