From 3afcf9c01cc99c22bfe6242352bf8c253e4258c0 Mon Sep 17 00:00:00 2001
From: rlaphoenix <rlaphoenix@pm.me>
Date: Sat, 30 Jul 2022 03:13:58 +0100
Subject: [PATCH] Cdm: Improve readability of license signature exception

---
 pywidevine/cdm.py | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/pywidevine/cdm.py b/pywidevine/cdm.py
index 45abd68..ba6cdf4 100644
--- a/pywidevine/cdm.py
+++ b/pywidevine/cdm.py
@@ -233,13 +233,13 @@ class Cdm:
 
         enc_key, mac_key_server, _ = self.derive_keys(*context, session_key)
 
-        license_signature = HMAC. \
+        computed_signature = HMAC. \
             new(mac_key_server, digestmod=SHA256). \
             update(licence.SerializeToString()). \
             digest()
 
-        if license_message.signature != license_signature:
-            raise ValueError("The License Signature doesn't match the Signature listed in the Message")
+        if license_message.signature != computed_signature:
+            raise ValueError("Signature Mismatch on License Message, rejecting license")
 
         return [
             Key.from_key_container(key, enc_key)