On his blog, Rusty Russell digs into sources of randomness
for user-space programs (other than just reading /dev/urandom
). "There are three obvious classes of randomness: things about the particular machine we’re on, things about the particular boot of the machine we’re on, and things which will vary every time we ask.
" He goes on to look at examples in each category and give a rough guess of the number of bits of entropy each would produce.
to post comments)