Patent · US Active

Split chain of trust for secure device boot

US11113403B2 · kind B2 · utility

1Cited by

0References

20Claims

0Family size

Assignee

Cisco Technology, Inc. · US

Inventors

Yaron Sella · Jerusalem, IL
Kevin Holcomb · Apex, US

Key dates

Filing date	Apr 9, 2019
Grant date	Sep 7, 2021
Priority date	—
Expiry date	Oct 18, 2039

Classification

Technology area (CPC H)Electricity
CPC primaryH04L9/0643
WIPO fieldComputer technology
WIPO sectorElectrical engineering

Abstract

The secure chain of trust steps to boot-up a computing device are split between the shutdown procedure of the computing device and the boot-up procedure of the computing device to reduce the time required for the computing device to boot-up. The main image associated with a central processing unit of the computing device is validated during the shutdown procedure of the computing device such that the operating system for the central processing unit is available when the computing device receives an action to power on. The boot-up time for the computing device is reduced, which allows the computing device to boot-up within an established time frame.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.