From 5b0ef28432c2d175e94d3302c2039ed73531191d Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Konrad=20Go=C5=82awski?= <konrad@golawski.it>
Date: Tue, 13 Sep 2022 13:45:06 +0200
Subject: [PATCH] Fix luks2hashcat for empty containers

Return error when LUKS container is not initialized.
---
 tools/luks2hashcat.py | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/tools/luks2hashcat.py b/tools/luks2hashcat.py
index 2cda461b5a..16f4bc933a 100755
--- a/tools/luks2hashcat.py
+++ b/tools/luks2hashcat.py
@@ -253,6 +253,8 @@ def extract_version1(file):
     payload = file.read(PAYLOAD_SIZE)
     if len(payload) < PAYLOAD_SIZE:
         raise ValueError("file contains less data than needed")
+    if sum(payload) == 0:
+        raise ValueError("file not initialized - payload contains zeros only")
 
     # convert into header
     header = HeaderVersion1(