— random data source devices
The various random
devices produce high quality
random output data. Entropy data is collected from system activity (such as
disk, network, and clock device interrupts), and then used to key the ChaCha
stream cipher to generate the output. All the random devices are expected to
provide high quality pseudo-random output data.
function in userland libraries should be used instead, as it works without the
need to access these devices every time.
device first appeared in the Linux
operating system. This is a cloned interface.
ARC4 routines added by David Mazieres. Changed to use the ChaCha cipher in
No randomness testing suite provided.