Standalone script for decrypt cipher signature ?

[MegaCron]

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Question

Hi all.

I do not know how to create scripts in python, I create scripts in bash, but I did not find a solution for decrypting cipher signatures in bash. Youtube-dl has integrated signature decryption, is it possible to export it to a standalone script ?

./decrypt.py "here-encrypted-cipher-signature"

[dstftw]

youtube-dl/youtube_dl/extractor/youtube.py

Lines 1369 to 1394 in 00eb865

	def _decrypt_signature(self, s, video_id, player_url, age_gate=False):
	"""Turn the encrypted s field into a working signature"""
	if player_url is None:
	raise ExtractorError('Cannot decrypt signature without player_url')
	if player_url.startswith('//'):
	player_url = 'https:' + player_url
	elif not re.match(r'https?://', player_url):
	player_url = compat_urlparse.urljoin(
	'https://www.youtube.com', player_url)
	try:
	player_id = (player_url, self._signature_cache_id(s))
	if player_id not in self._player_cache:
	func = self._extract_signature_function(
	video_id, player_url, s
	)
	self._player_cache[player_id] = func
	func = self._player_cache[player_id]
	if self._downloader.params.get('youtube_print_sig_code'):
	self._print_sig_code(func, s)
	return func(s)
	except Exception as e:
	tb = traceback.format_exc()
	raise ExtractorError(
	'Signature extraction failed: ' + tb, cause=e)

[MegaCron]

dstftw, Is this a "plug-n-play" stand-alone script or raw code ? I do not understand python code.