US Patent 7424398 Boot validation system and method

Patent 7424398 was granted and assigned to Lexmark International, Inc. on September, 2008 by the United States Patent and Trademark Office.

Overview Structured Data Issues Contributors Activity

Is a

Patent

Patent attributes

Current Assignee

Lexmark International, Inc.

Patent Jurisdiction

United States Patent and Trademark Office

Patent Number

7424398

Date of Patent

September 9, 2008

Patent Application Number

11425893

Date Filed

June 22, 2006

Patent Citations Received

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US Patent 12105863 Interface controller for commodity devices

Patent Primary Examiner

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Tung S Lau

Patent abstract

A boot validation system and method may be used in a computer system to validate boot code before allowing the computer system to execute the boot code. In particular, a secure hash algorithm may be used to compute a hash value of the boot code and the computed hash value may be compared to a preprogrammed hash value stored in a secure non-volatile device. If the hash values match the boot code may be validated and the system may then be allowed to execute the boot code. Once the boot code is validated, the boot code may be executed to validate other code (e.g., firmware) in the computer system. In an exemplary embodiment, the boot validation systems and method may be used in an imaging device, such as a printer.