Some hints to get started with an arbitrary number of TrueRNG USB devices:
udev : /etc/udev/rules.d/99-TrueRNG.rules :
—
# ubld.it TrueRNG
#
# This rule creates a symlink to newly attached CDC-ACM device
# Also includes fix for wrong termios settings on some linux kernels
# New! includes ignore for modemmanger
# (Thanks neoaeon)
SUBSYSTEM==”tty”, ATTRS{product}==”TrueRNG”, SYMLINK+=”TrueRNG%n”, RUN+=”/bin/stty raw -echo -ixoff -F /dev/%k speed 3000000″
ATTRS{idVendor}==”04d8″, ATTRS{idProduct}==”f5fe”, ENV{ID_MM_DEVICE_IGNORE}=”1″
—
init: /etc/init/rng-tools.conf :
—
description “rng-tools daemon”
start on runlevel [2345]
stop on runlevel [016]
env DEVLIST=”$(find /dev/TrueRNG* -follow -type c)”
pre-start script
for device in $DEVLIST; do
start rngd-instance DEVICE=$device || failed=”${failed}$device ”
done
test -n “$failed” || { echo “Failed to start instances: $failed”; exit 1; }
end script
—
init: /etc/init/rngd-instance.conf :
—
stop on stopping rng-tools or runlevel [016]
description “rngd instance”
usage “DEVICE=full path to rng device”
instance $DEVICE
pre-start script
test -c “$DEVICE” || { echo “Not a device: $DEVICE”; exit 1; }
mkdir -p /var/run/rngd || { echo “Nope”; exit 1; }
end script
exec rngd –foreground –pidfile=/var/run/rngd/$(basename “$DEVICE”) -r $DEVICE
—
user@host:/etc/init.d$ sudo ln -sf /lib/init/upstart-job rng-tools
Done!
Example output with 4 USB keys:
—
$ sudo stop rng-tools
$ sudo start rng-tools
$ ps -ef|grep rngd
root 19164 1 0 22:47 ttyACM0 00:00:14 rngd –foreground –pidfile=/var/run/rngd/TrueRNG0 -r /dev/TrueRNG0
root 19172 1 0 22:47 ttyACM1 00:00:14 rngd –foreground –pidfile=/var/run/rngd/TrueRNG1 -r /dev/TrueRNG1
root 19180 1 0 22:47 ttyACM2 00:00:15 rngd –foreground –pidfile=/var/run/rngd/TrueRNG2 -r /dev/TrueRNG2
root 19185 1 0 22:47 ttyACM3 00:00:14 rngd –foreground –pidfile=/var/run/rngd/TrueRNG3 -r /dev/TrueRNG3
—
$ pv < /dev/random > /dev/null
254MB 0:00:15 [ 213kB/s]
^C
—
