Fixes #9548
@@ -43,7 +43,7 @@ fi
# Figure out how many words we need for 128 bits of security margin.
# Each word adds log2($#words) bits.
-local -i n=$((ceil(128. / log2($#words))))
+local -i n=$((ceil(128. / (log($#words) / log(2)))))
{
local c