Hardware random number generator

摘要

A random number generator may include an input configured to receive a plurality of entropy bits generated by an entropy source of a random number generator, wherein the random number generator is configured to generate a plurality of random numbers; and an entropy health monitor coupled with the input, wherein the entropy health monitor is configured to perform a corrective action based on the plurality of entropy bits.

主权项

1. An apparatus, comprising:
an input configured to receive a plurality of entropy bits generated by an entropy source of a random number generator, wherein the random number generator is configured to generate a plurality of random numbers; and a hardware entropy health monitor coupled with the input, wherein the entropy health monitor comprises:
a plurality of health check blocks, wherein a first health check block of the plurality of health check blocks is configured to generate a first health check error based on a subset including fewer than all of the plurality of entropy bits, and wherein a second health check block of the plurality of health check blocks is configured to generate a second health check error based on all of the plurality of entropy bits, andan error counter configured to store a number of health check errors generated by the plurality of health check blocks, wherein the entropy health monitor is configured to perform a corrective action in response to the number of health check errors exceeding an error limit.