(PHP 8 >= 8.1.0)
sodium_crypto_core_ristretto255_scalar_negate — Negates a scalar value
$s): stringNegates a scalar value. Available as of libsodium 1.0.18.
本函数还未编写文档，仅有参数列表。
sScalar value.
Returns a 32-byte random string.
示例 #1 sodium_crypto_core_ristretto255_scalar_negate() example
<?php
$foo = sodium_crypto_core_ristretto255_scalar_random();
$negate = sodium_crypto_core_ristretto255_scalar_negate($foo);
$reNegate = sodium_crypto_core_ristretto255_scalar_negate($negate);
var_dump(hash_equals($foo, $reNegate));
?>以上示例会输出：
bool(true)