Sodium Functions
PHP Manual

sodium_crypto_kx_client_session_keys

Calculate the client-side session keys.

Description

array sodium_crypto_kx_client_session_keys(#[\SensitiveParameter]string $client_key_pair, string $server_key)

Calculate the client-side session keys, using the X25519 + BLAKE2b key-exchange method.

Parameters

client_key_pair
A crypto_kx keypair, such as one generated by sodium_crypto_kx_keypair.
server_key
A crypto_kx public key.

Return Values

An array consisting of two strings. The first should be used for receiving data from the server. The second should be used for sending data to the server.