--On August 20, 2012 9:35:54 AM -0700 Dan Kaminsky <[email protected]> wrote: > > Neat. What's the default, and what does it mine? Count? Nanosecond > time? >
This 2002 USENIX paper explains the process. A Yarrow PRNG is used and the output is encrypted with the AES Rijndael cipher. <http://static.usenix.org/events/bsdcon/full_papers/murray/murray_html/> Sources of entropy are defined in random.h enum esource { \ RANDOM_WRITE, RANDOM_KEYBOARD, \ RANDOM_MOUSE, RANDOM_NET, \ RANDOM_INTERRUPT, ENTROPYSOURCE \ }; void random_harvest(void *data, \ u_int count, u_int bits, \ u_int frac, enum esource source); Here's a copy of random.h: <http://bintree.net/freebsd/d1/d79/random_8h_source.html> -- Paul Schmehl, Senior Infosec Analyst As if it wasn't already obvious, my opinions are my own and not those of my employer. ******************************************* "It is as useless to argue with those who have renounced the use of reason as to administer medication to the dead." Thomas Jefferson "There are some ideas so wrong that only a very intelligent person could believe in them." George Orwell _______________________________________________ Full-Disclosure - We believe in it. Charter: http://lists.grok.org.uk/full-disclosure-charter.html Hosted and sponsored by Secunia - http://secunia.com/
