sodium_crypto_kdf_derive_from_key
(PHP 7 >= 7.2.0, PHP 8)
sodium_crypto_kdf_derive_from_key — Derive a subkey
Descrição
sodium_crypto_kdf_derive_from_key(
int
int
string
#[\SensitiveParameter] string
): string
int
$subkey_length,int
$subkey_id,string
$context,#[\SensitiveParameter] string
$key): string
Derive a subkey from a root key and additional context.
Similar to hash_hkdf().
Parâmetros
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.
Valor Retornado
A string of pseudorandom (raw binary) bytes.