DETECTION OF FAULT INJECTIONS IN A RANDOM NUMBER GENERATOR

摘要

A method for detecting a fault injection in a circuit, wherein a bit pattern is mixed in a bit stream originating from a noise source and the presence of this pattern is detected in a signal sampled downstream of the mixing.

主权项

1. A method, comprising:
mixing a bit pattern with a bit stream originating from a noise source to generate a mixed bit sequence; sampling the mixed bit sequence to detect the bit pattern in the mixed bit sequence; detecting fault injection based on whether the sampling detects the bit pattern in the mixed hit sequence; and taking one or more actions to protect a circuit in response to detection of fault injection.