1. A method, comprising: generating a first random number (RN) in a central processing unit (CPU) using a first set of three inputs comprising: an externally generated value (EGV); a value associated with an internal counter entropy source (ICES), and a value associated with an internal arbitrary entropy source (IAES), and generating subsequent random numbers in the CPU using a subsequent set of three inputs comprising: one or more previously generated random numbers, a value associated with the ICES, and a value associated with the IAES.