SECURE INTEGRATED-CIRCUIT STATE MANAGEMENT

An apparatus includes a Non-Volatile Memory (NVM) and a controller. The controller is configured to store in the NVM a state array, which includes multiple words. In each word, one or more bits are designated as lock-bits. The controller is further configured to set an operational state for the appa...

Full description

Saved in:
Bibliographic Details
Main Authors Morav, Dan, Talmi, Yossi, Hershman, Ziv
Format Patent
LanguageEnglish
Published 08.11.2018
Subjects
CALCULATING
COMPUTING
COUNTING
ELECTRIC DIGITAL DATA PROCESSING
PHYSICS
Online AccessGet full text

Cover

More Information
Summary:An apparatus includes a Non-Volatile Memory (NVM) and a controller. The controller is configured to store in the NVM a state array, which includes multiple words. In each word, one or more bits are designated as lock-bits. The controller is further configured to set an operational state for the apparatus based on the lock-bits of the state array, by (i) deciding whether each word in the state array is locked or unlocked by comparing the lock-bits of that word to respective expected lock values, (ii) if all the words in the state array are found locked, setting the apparatus to a locked state, (iii) if all the words in the state array are found unlocked, setting the apparatus to an unlocked state, and (iv) if one or more of the words are found locked and one or more other words are found unlocked, setting the apparatus to an error state.
Bibliography:Application Number: US201715585260