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Summery Summery
Constant-time conditional move.
Syntax Syntax
Parameters Parameters
- $f
-
(Required)
- $g
-
(Required)
- $b
-
(Required)
Return Return
Source Source
File: wp-includes/sodium_compat/src/Core/Curve25519.php
public static function fe_cmov(
ParagonIE_Sodium_Core_Curve25519_Fe $f,
ParagonIE_Sodium_Core_Curve25519_Fe $g,
$b = 0
) {
/** @var array<int, int> $h */
$h = array();
$b *= -1;
for ($i = 0; $i < 10; ++$i) {
/** @var int $x */
$x = (($f[$i] ^ $g[$i]) & $b);
$h[$i] = (int) ((int) ($f[$i]) ^ $x);
}
return ParagonIE_Sodium_Core_Curve25519_Fe::fromArray($h);
}