System and method of authenticating updated firmware of an information handling system

Abstract

In one or more embodiments, a first information handling system may: receive a chained cryptographic hash value determined by a trusted platform module (TPM) of a second information handling system; receive multiple patch identities associated with multiple updated firmware installed on multiple components of the second information handling system; receive an event log associated with output of the TPM as the TPM determined the chained cryptographic hash value; retrieve multiple layered endorsements respectively associated with the multiple patch identities; determine multiple hash values from multiple signatures stored in the multiple layered endorsements; compare the chained cryptographic hash value with the event log; compare multiple event information with the multiple hash values; and determine that the second information handling system has booted into a trusted state based at least on comparing the chained cryptographic hash value with the event log and comparing the multiple event information with the multiple hash values.