PHP Manual: sodium_crypto_secretbox

Description

function sodium_crypto_secretbox_keygen(): string

Generate a key for use with sodium_crypto_secretbox() and sodium_crypto_secretbox_open().

Parameters

This function has no parameters.

Return Values

Returns the generated string of cryptographically secure random bytes.

Examples

Example #1 sodium_crypto_secretbox_keygen() example

<?php
$key = sodium_crypto_secretbox_keygen();
var_dump( sodium_bin2hex( $key ) );
?>

The above example will output something similar to:

string(64) "88bd1dc51ec81984f3ddc5a8f59a3d95b647e2da3e879f1b9ceb0abd89e7286c"

Example #2 Comparing sodium_crypto_secretbox_keygen() with random_bytes()

<?php
$key = sodium_crypto_secretbox_keygen();
$bytes = random_bytes( SODIUM_CRYPTO_SECRETBOX_KEYBYTES );
var_dump( mb_strlen( $key, '8bit' ) === mb_strlen( $bytes, '8bit' ) );
?>

The above example will output:

bool(true)

sodium_crypto_secretbox_keygen

Description

Parameters

Return Values

Examples

See Also