From e57d75583705cfc6be5a201e9abc7f2563cb5f73 Mon Sep 17 00:00:00 2001
From: rlaphoenix <17136956+rlaphoenix@users.noreply.github.com>
Date: Fri, 17 May 2024 00:58:20 +0100
Subject: [PATCH] fix(clearkey): Do not pad data before decryption

This is seemingly unnecessary and simply incorrect at least for two sources (VGTV, and TRUTV).

Without this change it is not possible to correctly merge all segments without at least some problem in the resulting file.
---
 devine/core/drm/clearkey.py | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/devine/core/drm/clearkey.py b/devine/core/drm/clearkey.py
index dfec042..4869fe7 100644
--- a/devine/core/drm/clearkey.py
+++ b/devine/core/drm/clearkey.py
@@ -7,7 +7,7 @@ from typing import Optional, Union
 from urllib.parse import urljoin
 
 from Cryptodome.Cipher import AES
-from Cryptodome.Util.Padding import pad, unpad
+from Cryptodome.Util.Padding import unpad
 from m3u8.model import Key
 from requests import Session
 
@@ -43,7 +43,7 @@ class ClearKey:
 
         decrypted = AES. \
             new(self.key, AES.MODE_CBC, self.iv). \
-            decrypt(pad(path.read_bytes(), AES.block_size))
+            decrypt(path.read_bytes())
 
         try:
             decrypted = unpad(decrypted, AES.block_size)