From a6b0615d945313dd1c058eb97cc02c460853411e Mon Sep 17 00:00:00 2001
From: Patrick Simianer <p@simianer.de>
Date: Tue, 5 Dec 2017 21:13:10 +0100
Subject: bishuf: proper fixed source of randomness

---
 bishuf | 11 ++++++-----
 1 file changed, 6 insertions(+), 5 deletions(-)

(limited to 'bishuf')

diff --git a/bishuf b/bishuf
index e3560f6..62689aa 100755
--- a/bishuf
+++ b/bishuf
@@ -9,9 +9,10 @@ if [[ $? -ne 0 ]]; then
   fi
 fi
 
-F=$(mktemp /tmp/bishuf.XXXXXX)
-echo 42 > $F
-$SHUF --random-source=$F $1 > $1.shuf
-$SHUF --random-source=$F $2 > $2.shuf
-rm $F
+
+get_random() { seed="$1"; openssl enc -aes-256-ctr -pass pass:"$seed" -nosalt < /dev/zero 2>/dev/null; }
+
+echo "shuffling ..."
+$SHUF --random-source=<(get_random 42) $1 > $1.shuf
+$SHUF --random-source=<(get_random 42) $2 > $2.shuf
 
-- 
cgit v1.2.3