sodium_crypto_kx_secretkey

(PHP 7 >= 7.2.0, PHP 8)

sodium_crypto_kx_secretkey — Extract the secret key from a crypto_kx keypair.

Description

sodium_crypto_kx_secretkey(#[\SensitiveParameter] string $key_pair): string

Extract the secret key from a crypto_kx keypair.

Parameters

key_pair
X25519 keypair, such as one generated by sodium_crypto_kx_keypair().

Return Values

X25519 secret key.