56 lines
1.6 KiB
Markdown
56 lines
1.6 KiB
Markdown
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---
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title: messages.requestEncryption
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description: Sends a request to start a secret chat to the user.
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image: https://docs.madelineproto.xyz/favicons/android-chrome-256x256.png
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redirect_from: /API_docs/methods/messages_requestEncryption.html
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---
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# Method: messages.requestEncryption
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[Back to methods index](index.md)
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Sends a request to start a secret chat to the user.
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### Parameters:
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| Name | Type | Description | Required |
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|----------|---------------|-------------|----------|
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|user\_id|[Username, chat ID, Update, Message or InputUser](../types/InputUser.md) | User ID | Optional|
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|g\_a|[bytes](../types/bytes.md) | `A = g ^ a mod p`, see [Wikipedia](https://en.wikipedia.org/wiki/Diffie%E2%80%93Hellman_key_exchange) | Yes|
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### Return type: [EncryptedChat](../types/EncryptedChat.md)
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### Can bots use this method: **NO**
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### MadelineProto Example ([now async for huge speed and parallelism!](https://docs.madelineproto.xyz/docs/ASYNC.html)):
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```php
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if (!file_exists('madeline.php')) {
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copy('https://phar.madelineproto.xyz/madeline.php', 'madeline.php');
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}
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include 'madeline.php';
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$MadelineProto = new \danog\MadelineProto\API('session.madeline');
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$MadelineProto->start();
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$EncryptedChat = $MadelineProto->messages->requestEncryption(['user_id' => InputUser, 'g_a' => 'bytes', ]);
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```
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Or, if you're into Lua:
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```lua
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EncryptedChat = messages.requestEncryption({user_id=InputUser, g_a='bytes', })
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```
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### Errors
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| Code | Type | Description |
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|------|----------|---------------|
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|400|DH_G_A_INVALID|g_a invalid|
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|400|USER_ID_INVALID|The provided user ID is invalid|
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