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sodium_crypto_core_ristretto255_is_valid_point

(PHP 8 >= 8.1.0)

sodium_crypto_core_ristretto255_is_valid_point — Determines if a point on the ristretto255 curve

Beschreibung

sodium_crypto_core_ristretto255_is_valid_point(string $s): bool

Determines if a point on the ristretto255 curve, in canonical form, on the main subgroup, and that the point doesn't have a small order. Available as of libsodium 1.0.18.

Warnung

Diese Funktion ist bis jetzt nicht dokumentiert. Es steht nur die Liste der Parameter zur Verfügung.

Parameter-Liste

s

An Elliptic-curve point.

Rückgabewerte

Returns true if s is on the ristretto255 curve, false otherwise.

Beispiele

Beispiel #1 sodium_crypto_core_ristretto255_is_valid_point() example

<?php

$foo = sodium_crypto_core_ristretto255_scalar_random();
$bar = sodium_crypto_scalarmult_ristretto255_base($foo);

var_dump(sodium_crypto_core_ristretto255_is_valid_point($bar));
?>

Das oben gezeigte Beispiel erzeugt folgende Ausgabe:

bool(true)

Siehe auch