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

说明

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.

警告

本函数还未编写文档，仅有参数列表。

参数

s

An Elliptic-curve point.

返回值

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

示例

示例 #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));
?>

以上示例会输出：

bool(true)

参见

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备份地址：http://www.lvesu.com/blog/php/function.sodium-crypto-core-ristretto255-is-valid-point.php