MadelineProtoDocs/old_docs/API_docs_v34/methods/messages.acceptEncryption.md
2020-06-16 17:50:25 +02:00

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---
title: messages.acceptEncryption
description: Confirms creation of a secret chat
image: https://docs.madelineproto.xyz/favicons/android-chrome-256x256.png
redirect_from: /API_docs/methods/messages_acceptEncryption.html
---
# Method: messages.acceptEncryption
[Back to methods index](index.md)
Confirms creation of a secret chat
### Parameters:
| Name | Type | Description | Required |
|----------|---------------|-------------|----------|
|peer|[Secret chat ID, Update, EncryptedMessage or InputEncryptedChat](../types/InputEncryptedChat.md) | Secret chat ID | Yes|
|g\_b|[bytes](../types/bytes.md) | `B = g ^ b mod p`, see [Wikipedia](https://en.wikipedia.org/wiki/Diffie%E2%80%93Hellman_key_exchange) | Yes|
|key\_fingerprint|[long](../types/long.md) | 64-bit fingerprint of the received key | Yes|
### Return type: [EncryptedChat](../types/EncryptedChat.md)
### Can bots use this method: **NO**
### MadelineProto Example ([now async for huge speed and parallelism!](https://docs.madelineproto.xyz/docs/ASYNC.html)):
```php
if (!file_exists('madeline.php')) {
copy('https://phar.madelineproto.xyz/madeline.php', 'madeline.php');
}
include 'madeline.php';
$MadelineProto = new \danog\MadelineProto\API('session.madeline');
$MadelineProto->start();
$EncryptedChat = $MadelineProto->messages->acceptEncryption(['peer' => InputEncryptedChat, 'g_b' => 'bytes', 'key_fingerprint' => long, ]);
```
Or, if you're into Lua:
```lua
EncryptedChat = messages.acceptEncryption({peer=InputEncryptedChat, g_b='bytes', key_fingerprint=long, })
```
### Errors
| Code | Type | Description |
|------|----------|---------------|
|400|CHAT_ID_INVALID|The provided chat id is invalid|
|400|ENCRYPTION_ALREADY_ACCEPTED|Secret chat already accepted|
|400|ENCRYPTION_ALREADY_DECLINED|The secret chat was already declined|