PHP 8.1.0 Alpha 1 available for testing

sodium_crypto_kdf_derive_from_key

(PHP 7 >= 7.2.0, PHP 8)

sodium_crypto_kdf_derive_from_keyDerive a subkey

Descrição

sodium_crypto_kdf_derive_from_key ( int $subkey_length , int $subkey_id , string $context , 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.

add a note add a note

User Contributed Notes

There are no user contributed notes for this page.
To Top