Deprecated: Optional parameter $keys declared before required parameter $cms_id is implicitly treated as a required parameter in /home/www/dev/work/class/blog/CmsKey.php on line 75

Deprecated: Creation of dynamic property lvesu\lvesu\controller\blog\php::$title is deprecated in /home/www/dev/work/website/lvesu/class/controller/blog/php.php on line 28

Deprecated: Creation of dynamic property lvesu\lvesu\controller\blog\php::$outlink is deprecated in /home/www/dev/work/website/lvesu/template/blog/cms/php.manual.tpl on line 2

Deprecated: Creation of dynamic property lvesu\lvesu\controller\blog\php::$status is deprecated in /home/www/dev/work/website/lvesu/template/blog/index.head.php on line 2
PHP - Manual: sodium_crypto_core_ristretto255_is_valid_point - 互联网笔记

略微加速

PHP官方手册 - 互联网笔记

PHP - Manual: sodium_crypto_core_ristretto255_is_valid_point

2025-04-27

sodium_crypto_core_ristretto255_is_valid_point

(PHP 8 >= 8.1.0)

sodium_crypto_core_ristretto255_is_valid_pointDetermines 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

添加备注

用户贡献的备注

此页面尚无用户贡献的备注。

官方地址:https://www.php.net/manual/en/function.sodium-crypto-core-ristretto255-is-valid-point.php

北京半月雨文化科技有限公司.版权所有 京ICP备12026184号-3