Intel Corporation
Apparatus and method to provide secure fuse sense protection against power attacks

Abstract:

An apparatus of a computing system, a computer-readable medium, a method and a system. The apparatus comprises an input/output interface and one or more processors connected to the input/output interface and adapted to perform a first reading of first fuse data stored in a fuse array storage circuitry to result in read first fuse data, and receive the read first fuse data from the fuse array storage circuitry through the input/output interface; after a random time-delay, perform a second reading of second fuse data stored in the fuse array storage circuitry to result in read second fuse data, and receive the read second fuse data from the fuse array storage circuitry through the input/output interface; and compare the read first fuse data with the read second fuse data, and if there is no match, halt a boot-up of the computing system.