Added tgcrypto lib from pyrogram project

optional-requirements.txt

@@ -1,4 +1,6 @@
+tgcrypto
 cryptg
+pyaesni
 pysocks
 python-socks[asyncio]
 hachoir

readthedocs/basic/installation.rst

@@ -51,7 +51,7 @@ The version number of the library should show in the output.
 Optional Dependencies
 =====================
 
-If cryptg_ is installed, **the library will work a lot faster**, since
+If tgcrypto_ or cryptg_ or pyaesni(intel aes-ni) is installed, **the library will work a lot faster**, since
 encryption and decryption will be made in C instead of Python. If your
 code deals with a lot of updates or you are downloading/uploading a lot
 of files, you will notice a considerable speed-up (from a hundred kilobytes
@@ -83,11 +83,12 @@ manually.
         apt update
         apt install clang lib{jpeg-turbo,webp}-dev python{,-dev} zlib-dev
         pip install -U --user setuptools
-        pip install -U --user telethon cryptg pillow
+        pip install -U --user telethon tgcrypto pillow
 
     Thanks to `@bb010g`_ for writing down this nice list.
 
 
+.. _tgcrypto: https://github.com/pyrogram/tgcrypto
 .. _cryptg: https://github.com/cher-nov/cryptg
 .. _pyaes: https://github.com/ricmoo/pyaes
 .. _pillow: https://python-pillow.org

telethon/_client/telegramclient.py

@@ -1676,7 +1676,7 @@ class TelegramClient:
         Downloads the given media from a message object.
 
         Note that if the download is too slow, you should consider installing
-        ``cryptg`` (through ``pip install cryptg``) so that decrypting the
+        ``tgcrypto`` (through ``pip install tgcrypto``) so that decrypting the
         received data is done in C instead of Python (much faster).
 
         See also `Message.download_media() <telethon.tl._custom.message.Message.download_media>`.