The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Aug. 04, 2026
Filed:
Feb. 09, 2024
Cisco Technology, Inc., San Jose, CA (US);
Samir Valjibhai Rajgor, Santa Clara, CA (US);
Sachin Agarwal, Fremont, CA (US);
Srirajkumar Sundararaman, San Jose, CA (US);
Chirag Shroff, Cary, NC (US);
Cisco Technology, Inc., San Jose, CA (US);
Abstract
A method for monitoring an Integrated Circuit (IC). The method includes decrypting, by the Root-Of-Trust (ROT) module, an identity package that resides in a non-volatile memory of the IC using a secret accessible by the ROT module. The identity package is configured in a decrypted state at the non-volatile memory by use of the secret. The ROT module is configured to discover, based on monitoring data from a sensor that an attack is at least being attempted on a package of the IC. The ROT determines whether a debug package is present in response to the attack. If the debug package is not present, the ROT module is configured to execute a tamper resistance process to prevent the use of the secret by the ROT module and the identity package from being placed or remaining in a decrypted state in the non-volatile memory of the IC.