--- title: set_client_DH_params description: Sets client diffie-hellman parameters image: https://docs.madelineproto.xyz/favicons/android-chrome-256x256.png --- # Method: set\_client\_DH\_params [Back to methods index](index.md) Sets client diffie-hellman parameters ### Parameters: | Name | Type | Description | Required | |----------|---------------|-------------|----------| |nonce|[int128](../types/int128.md) | Random number for cryptographic security | Yes| |server\_nonce|[int128](../types/int128.md) | Random number for cryptographic security, given by server | Yes| |encrypted\_data|[string](../types/string.md) | Encrypted message | Yes| ### Return type: [Set\_client\_DH\_params\_answer](../types/Set_client_DH_params_answer.md) ### Can bots use this method: **YES** ### 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(); $Set_client_DH_params_answer = $MadelineProto->set_client_DH_params(['nonce' => int128, 'server_nonce' => int128, 'encrypted_data' => 'string', ]); ``` Or, if you're into Lua: ```lua Set_client_DH_params_answer = set_client_DH_params({nonce=int128, server_nonce=int128, encrypted_data='string', }) ``` ### Errors | Code | Type | Description | |------|----------|---------------| |400|INPUT_METHOD_INVALID_4110704415_X||