Linear Hybrid Cellular Automata: https://pdfs.semanticscholar.org/7835/161f253ab117a3666fa8e74e008782a789cd.pdf https://pdfs.semanticscholar.org/7835/161f253ab1

Linear Hybrid Cellular Automata: https://pdfs.semanticscholar.org/7835/161f253ab117a3666fa8e74e008782a789cd.pdf https://pdfs.semanticscholar.org/7835/161f253ab117a3666fa8e7... Parallelizable and efficient method for producing high quality pseudo random bits. Designed to achieve maximal period (with 500 bit state the period of repetition is one less than 2^500). Can be run backwards or forwards. Running it backwards undoes running it forwards and reproduces the pseudo random bits in reverse order.