6

I try really hard to understand howto use Telegram api with telethon. I have some Channels in Telegram, where i want to delete older Messages. Using inputpeerchannel() i need channel_id (No Problem) and channel_hash. I cant findout howto get this channel_hash by channel_id. Thank you from germany

Fritz Maier
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3 Answers3

11

In order to find channel access_hash, you should resolve channel username. Original MTProto method contacts.resolveUsername#f93ccba3 gets @username and returns channel info including access_hash.

In telethon you need to invoke ResolveUsernameRequest to call the above original MTProto method. You may use this code to resolve username to access_hash:

client = TelegramClient(session_file, api_id=00000, api_hash='XXXXX')
client.connect()
response = client.invoke(ResolveUsernameRequest("your_channel_id"))
print(response.chats[0].access_hash)
client.disconnect()
Ali Hashemi
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  • "your_channel_id" is the username or the channel_id? it does not work for me with the channel_id, it works with the username but I only have the channel_id – flagg19 Jan 07 '18 at 11:38
  • "your_channel_id" is a string and it's the username. You can't access a channel only by `channel_id`. You need `access_hash` too. – Ali Hashemi Jan 08 '18 at 10:16
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    Do you know if the access_hash will be expired? – luke77 Apr 11 '21 at 10:22
1

There are 4 ways to get access hash:

  1. From a Group
  2. From username
  3. From contact list
  4. From chats message

So, if you have id only, there is no way to get access hash

Stephen Ostermiller
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Huy
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0

Here is the updated code. replace appid, apphash and username

with TelegramClient('session.session', <app-id>,<app-hash>') as client:
result = client(functions.contacts.ResolveUsernameRequest(
    username=<username>
))
print(result.stringify())
Rajathithan Rajasekar
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