My implementation of Fortuna (See Wikipedia ) uses 64-pools of entropy gathered from the browser’s clock, mouse position and DOM content. Entropy is gathered also collected at random intervals and from mouse movement. There is of course a lot of SHA256 and AES gnashing in the background.
Documentation is scant at this time, so drop me any questions at my GitHub inbox.
This Fortuna was written to supply randomness to an All-Or-Nothing Transform ( About AONT ) library to be used in some of my other projects.