Invention Grant
US09479331B2 Managing security in a system on a chip (SOC) that powers down a secure processor
有权
管理芯片系统（SOC）中的安全性，从而降低安全处理器的功耗
- Patent Title: Managing security in a system on a chip (SOC) that powers down a secure processor
- Patent Title (中): 管理芯片系统（SOC）中的安全性，从而降低安全处理器的功耗
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Application No.: US14463763Application Date: 2014-08-20
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Publication No.: US09479331B2Publication Date: 2016-10-25
- Inventor: Joshua P. de Cesare , Anand Dalal
- Applicant: Apple Inc.
- Applicant Address: US CA Cupertino
- Assignee: Apple Inc.
- Current Assignee: Apple Inc.
- Current Assignee Address: US CA Cupertino
- Agency: Meyertons, Hood, Kivlin, Kowert & Goetzel, P.C.
- Agent Lawrence J. Merkel
- Main IPC: G06F21/64
- IPC: G06F21/64 ; H04L9/08 ; G06F21/00
Abstract:
An SOC includes a secure processor and an always-on component. The always-on component may remain powered even during times that other parts of the SOC are powered off. Particularly, the secure processor and related circuitry may be powered off, while various state for the secure processor may be stored in memory in an encrypted form. Certain state may be stored in the always-on component. When the secure processor is powered on again, the secure processor may check for the state in the always-on component. If the state is found, the secure processor may retrieve the state and use the state to access the encrypted memory state.
Public/Granted literature
- US20160055102A1 Managing Security in a System on a Chip (SOC) that Powers Down a Secure Processor Public/Granted day:2016-02-25
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