From c93898dae92753a04fee643c81ec62a5a9dbed0b Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Jaime=20Marqui=CC=81nez=20Ferra=CC=81ndiz?=
 <jaime.marquinez.ferrandiz@gmail.com>
Date: Wed, 10 Jul 2013 10:40:49 +0200
Subject: [PATCH] YoutubeIE: new algo for length 83 (closes #1017 and closes
 #1016)

---
 devscripts/youtube_genalgo.py   | 4 ++--
 test/test_youtube_sig.py        | 2 +-
 youtube_dl/extractor/youtube.py | 2 +-
 3 files changed, 4 insertions(+), 4 deletions(-)

diff --git a/devscripts/youtube_genalgo.py b/devscripts/youtube_genalgo.py
index c3d69e6f4..150c88d17 100644
--- a/devscripts/youtube_genalgo.py
+++ b/devscripts/youtube_genalgo.py
@@ -20,9 +20,9 @@
     # 84
     ("qwertyuioplkjhgfdsazxcvbnm1234567890QWERTYUIOPLKJHGFDSAZXCVBNM!@#$%^&*()_-+={[};?>.<",
      "<.>?;}[{=+-_)(*&^%$#@!MNBVCXZASDFGHJKLPOIUYTREWe098765432rmnbvcxzasdfghjklpoiuyt1"),
-    # 83
+    # 83 - vfl26ng3K 2013/07/10
     ("qwertyuioplkjhgfdsazxcvbnm1234567890QWERTYUIOPLKJHGFDSAZXCVBNM!#$%^&*()_+={[};?/>.<",
-     "D.>/?;}[{=+_)(*&^%$#!MNBVCXeAS<FGHJKLPOIUYTREWZ0987654321mnbvcxzasdfghjklpoiuytrQ"),
+     "qwertyuioplkjhgfdsazxcvbnm1234567890QWERTYUIOPLKJHGFDSAZXCVBNM!#$%^&*()_+={[};?/>"),
     # 82
     ("qwertyuioplkjhgfdsazxcvbnm1234567890QWERTYUIOPLKHGFDSAZXCVBNM!@#$%^&*(-+={[};?/>.<",
      "Q>/?;}[{=+-(*<^%$#@!MNBVCXZASDFGHKLPOIUY8REWT0q&7654321mnbvcxzasdfghjklpoiuytrew9"),
diff --git a/test/test_youtube_sig.py b/test/test_youtube_sig.py
index e87b6259b..e76604244 100755
--- a/test/test_youtube_sig.py
+++ b/test/test_youtube_sig.py
@@ -45,7 +45,7 @@ def test_84(self):
 
     def test_83(self):
         wrong = "qwertyuioplkjhgfdsazxcvbnm1234567890QWERTYUIOPLKJHGFDSAZXCVBNM!#$%^&*()_+={[};?/>.<"
-        right = "D.>/?;}[{=+_)(*&^%$#!MNBVCXeAS<FGHJKLPOIUYTREWZ0987654321mnbvcxzasdfghjklpoiuytrQ"
+        right = "qwertyuioplkjhgfdsazxcvbnm1234567890QWERTYUIOPLKJHGFDSAZXCVBNM!#$%^&*()_+={[};?/>"
         self.assertEqual(sig(wrong), right)
 
     def test_82(self):
diff --git a/youtube_dl/extractor/youtube.py b/youtube_dl/extractor/youtube.py
index 01b20cdc9..afb655c04 100644
--- a/youtube_dl/extractor/youtube.py
+++ b/youtube_dl/extractor/youtube.py
@@ -190,7 +190,7 @@ def _decrypt_signature(self, s):
         elif len(s) == 84:
             return s[83:36:-1] + s[2] + s[35:26:-1] + s[3] + s[25:3:-1] + s[26]
         elif len(s) == 83:
-            return s[52] + s[81:55:-1] + s[2] + s[54:52:-1] + s[82] + s[51:36:-1] + s[55] + s[35:2:-1] + s[36]
+            return s[:81]
         elif len(s) == 82:
             return s[36] + s[79:67:-1] + s[81] + s[66:40:-1] + s[33] + s[39:36:-1] + s[40] + s[35] + s[0] + s[67] + s[32:0:-1] + s[34]