Title: Chaos generator for accumulation of stream entropy
Patent application publication number: 20060291649
Publication date: December 28, 2006
Filing date: June 22, 2005
Link to PDF: 
AIPW Summary: This method and system is designed to be a part of a fast elliptic encryption system for small devices (e.g., media players and mobile phones). Simply put, this method and system generates secure random numbers for use in a cryptography system. The problem with existing pseudorandom number generators is that they may get to a point where the numbers are generated in a pattern, at which point the security of a system relying on those numbers deteriorates. Small devices do not have the hardware capabilities to be able to generate longer pseudorandom numbers. The chaos generator includes a random source coupled to an entropy accumulator. The entropy accumulator generates a binary random input sequence, accumulates the entropy of the input sequence, and provides a binary random output sequence based on the accumulated entropy.