sodium_crypto_core_ristretto255_is_valid_point

sodium_crypto_core_ristretto255_is_valid_point

Determines if a point on the ristretto255 curve

bool **sodium_crypto_core_ristretto255_is_valid_point** string $s

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.

sAn Elliptic-curve point.

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

Voorbeeld: 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));
?>

bool(true)

sodium_crypto_core_ristretto255_scalar_random``sodium_crypto_scalarmult_ristretto255_base