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Summery Summery
Returns 0 if this field element results in all NUL bytes.
Syntax Syntax
Parameters Parameters
- $f
-
(Required)
Return Return
(bool)
Source Source
File: wp-includes/sodium_compat/src/Core/Curve25519.php
public static function fe_isnonzero(ParagonIE_Sodium_Core_Curve25519_Fe $f)
{
static $zero;
if ($zero === null) {
$zero = str_repeat("\x00", 32);
}
/** @var string $zero */
/** @var string $str */
$str = self::fe_tobytes($f);
return !self::verify_32($str, (string) $zero);
}