Importance

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Abstract

A system and method for authenticating suspect code includes steps of: receiving the suspect code for a first instance of a trusted platform module; loading the suspect code into a trusted platform module device operatively associated with a processor, wherein the suspect code is loaded outside of a shielded location within the trusted platform module device; retrieving a validation public key from a table and storing it in a register in the trusted platform module device, the validation public key indexed by the suspect code; and retrieving a hash algorithm from the table, the hash algorithm indexed by the suspect code. The hash algorithm is run to derive a first hash value; then, using the validation public key, the second hash value is decrypted to derive a second decrypted hash value. The two hash values are compared; and upon determining a match, the suspect code is loaded into the shielded location of the processor for execution by the processor.

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First Claim