Cisco Technology, Inc.

Srinivas Vundru

Eric Albin Voit

Pradeep Kumar Kathail

Chirag Shroff

David Wayne Mills

Srirajkumar Sundararaman

Peter Panburana

Samir Valjibhai Rajgor

Tatiana Serguei Dorofeeva

A method for monitoring an Integrated Circuit (IC). The method includes a Root-Of-Trust (ROT) module to actuate a monitoring process to monitor at least one feature being performed in ongoing operations of the IC in accordance with a policy. The ROT module receives data that defines the policy that includes at least one feature being performed. A validating process is applied by the ROT module to data by using firmware and by using at least one built-in key of a plurality of built-in keys retrieved from a secure storage. The ROT module determines whether at least one feature is being performed in the ongoing operations of the IC in compliance with the policy. The ROT module applies an impairing process to impair at least one feature of the plurality of features being performed to attempt to place the performance of the ongoing operations of the IC in compliance with the policy.

Using root-of-trust (ROT) to continuously monitor device operation for impairment

The present technology discloses methods and systems for receiving a security profile request from an integrity verifier, the request including a nonce; requesting, from a trusted platform module, a new nonce, wherein the new nonce is generated at least in part by the nonce and a current timestamp from a clock in the trusted platform module; receiving, from the trusted platform module, the new nonce; requesting, from a cryptoprocessor, a set of platform configuration registers; receiving, from the cryptoprocessor, the set of platform configuration registers; and sending a response to the integrity verifier, the response including the new nonce and the set of platform configuration registers to verify a security status of the trusted platform module and the cryptoprocessor.

Real-time attestation of cryptoprocessors lacking timers and counters

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Cary, NC, United States of America

Srinivas Vundru