From 0a41a7c20316c7d3330233a624d8cf20ea5a81ae Mon Sep 17 00:00:00 2001 From: Ken Sharp Date: Thu, 17 Jul 2014 16:56:55 -0500 Subject: initscripts: Use current date as an additional source of entropy If the seed file is empty or does not exist, the date is an extremely poor backup source of entropy, but it is better than nothing. Signed-off-by: Richard Tollerton Signed-off-by: Ben Shelton Signed-off-by: Richard Purdie --- meta/recipes-core/initscripts/initscripts-1.0/urandom | 11 +++++------ 1 file changed, 5 insertions(+), 6 deletions(-) (limited to 'meta/recipes-core/initscripts') diff --git a/meta/recipes-core/initscripts/initscripts-1.0/urandom b/meta/recipes-core/initscripts/initscripts-1.0/urandom index a0549dec25..ec4ef61f23 100755 --- a/meta/recipes-core/initscripts/initscripts-1.0/urandom +++ b/meta/recipes-core/initscripts/initscripts-1.0/urandom @@ -20,12 +20,11 @@ RANDOM_SEED_FILE=/var/lib/urandom/random-seed case "$1" in start|"") test "$VERBOSE" != no && echo "Initializing random number generator..." - # Load and then save 512 bytes, - # which is the size of the entropy pool - if test -f "$RANDOM_SEED_FILE" - then - cat "$RANDOM_SEED_FILE" >/dev/urandom - fi + # Load and then save 512 bytes, which is the size of the entropy + # pool. Also load the current date, in case the seed file is + # empty. + ( date +%s.%N; [ -f "$RANDOM_SEED_FILE" ] && cat "$RANDOM_SEED_FILE" ) \ + >/dev/urandom rm -f "$RANDOM_SEED_FILE" umask 077 dd if=/dev/urandom of=$RANDOM_SEED_FILE count=1 \ -- cgit 1.2.3-korg