From 1159322c355dcc7b29e0a98224a08f1e14df2207 Mon Sep 17 00:00:00 2001
From: Armin Preiml <apreiml@strohwolke.at>
Date: Thu, 11 Jul 2019 15:32:51 +0200
Subject: [PATCH] make sure we got enough random bytes

---
 init.lua | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/init.lua b/init.lua
index 0ba60e4..d4efe1f 100644
--- a/init.lua
+++ b/init.lua
@@ -36,7 +36,11 @@ end
 
 -- Efficient function to get a random string
 function random_string()
-    local random_bytes = io.open("/dev/urandom"):read(64);
+    local length = 64
+    local random_bytes = io.open("/dev/urandom"):read(length);
+    if string.len(random_bytes) ~= length then
+        error("Not enough random bytes read")
+    end
     return tohex(random_bytes);
 end