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<sodium_crypto_kdf_derive_from_keysodium_crypto_kx_client_session_keys>
^Sodium FunctionsLast updated: Mon, 26 Oct 2026

sodium_crypto_kdf_keygen

(PHP 7 >= 7.2.0, PHP 8)

sodium_crypto_kdf_keygen — Generate a random root key for the KDF interface

Description

function sodium_crypto_kdf_keygen(): string

Generates a random key suitable for serving as the root key for sodium_crypto_kdf_derive_from_key().

Parameters

This function has no parameters.

Return Values

A random 256-bit key.


<sodium_crypto_kdf_derive_from_keysodium_crypto_kx_client_session_keys>
^Sodium FunctionsLast updated: Mon, 26 Oct 2026