PHP - Manual: sodium_crypto_kdf_derive_from_key
2024-12-22
(PHP 7 >= 7.2.0, PHP 8)
sodium_crypto_kdf_derive_from_key — Derive a subkey
$subkey_length
,$subkey_id
,$context
,$key
Derive a subkey from a root key and additional context.
Similar to hash_hkdf().
subkey_length
Length of the key to return (in bytes)
subkey_id
Return the Nth subkey from a given root key. Useful for seeking.
context
Application-specific context.
key
The root key from which the subkey is derived.
A string of pseudorandom (raw binary) bytes.
官方地址:https://www.php.net/manual/en/function.sodium-crypto-kdf-derive-from-key.php