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(PHP 8 >= 8.1.0)
sodium_crypto_core_ristretto255_sub — Subtracts an element
Subtracts an element q
from p
.
Available as of libsodium 1.0.18.
Diese Funktion ist bis jetzt nicht dokumentiert. Es steht nur die Liste der Parameter zur Verfügung.
p
An element.
q
An element.
Returns a 32-byte random String.
Beispiel #1 sodium_crypto_core_ristretto255_sub() example
<?php
$foo = sodium_crypto_core_ristretto255_random();
$bar = sodium_crypto_core_ristretto255_random();
$value = sodium_crypto_core_ristretto255_add($foo, $bar);
$value = sodium_crypto_core_ristretto255_sub($value, $bar);
var_dump(hash_equals($foo, $value));
?>
Das oben gezeigte Beispiel erzeugt folgende Ausgabe:
bool(true)