(PHP 7 >= 7.2.0, PHP 8)
sodium_crypto_kx_server_session_keys — Calculate the server-side session keys.
$server_key_pair, string $client_key): arrayCalculate the server-side session keys, using the X25519 + BLAKE2b key-exchange method.
server_key_pairclient_keyAn array consisting of two strings. The first should be used for receiving data from the client. The second should be used for sending data to the client.