(PHP 7 >= 7.2.0, PHP 8)
sodium_crypto_box_keypair_from_secretkey_and_publickey — Create a unified keypair string from a secret key and public key
$secret_key, string $public_key): stringThis function exists to satisfy the API requirements of e.g. crypto_box(). Pass in one party's secret key and the other's public key, and you will obtain a "keypair" for your conversation.
secret_keySecret key.
public_keyPublic key.
X25519 Keypair.