From 3c95c31bc8f53ccc678b826ef6dcda3e0cd68bdd Mon Sep 17 00:00:00 2001
From: Sergi Delgado Segura <sergi.delgado.s@gmail.com>
Date: Fri, 6 Dec 2019 13:20:58 +0100
Subject: [PATCH] Creates tools shared between client and server side

Includes check_txid_format that has been renamed. Close #12 #43
---
 common/tools.py | 5 +++++
 1 file changed, 5 insertions(+)
 create mode 100644 common/tools.py

diff --git a/common/tools.py b/common/tools.py
new file mode 100644
index 0000000..d89bbdf
--- /dev/null
+++ b/common/tools.py
@@ -0,0 +1,5 @@
+import re
+
+
+def check_sha256_hex_format(value):
+    return isinstance(value, str) and re.search(r"^[0-9A-Fa-f]{64}$", value) is not None