Using hardware to secure areas of long term storage in CE devices
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United States of America Patent
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Mar 10, 2009
Grant Date -
Jul 20, 2006
app pub date -
Jan 20, 2005
filing date -
Jan 20, 2005
priority date (Note) -
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status (Latency Note)
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Abstract
A system includes long-term storage (e.g., flash memory) for storing sensitive data and critical components of a consumer electronic (CE) device such as an operating system (OS) kernel, private cryptographic key values, security applications, and firmware configurations, for example. Security hardware/software designates and restricts access to secured portions of long-term storage that contain the critical components. Requests for access to these secured portions are addressed by the security hardware/software, which authenticates a cryptographic authorization code received with the request. Read-write access to the secured portions is allowed for download and installation of, for example, a software or firmware upgrade if the cryptographic authorization code is authenticated.
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