public static function ParagonIE_Sodium_Core_Curve25519::ge_msub in Automatic Updates 7
Same name and namespace in other branches
- 8 vendor/paragonie/sodium_compat/src/Core/Curve25519.php \ParagonIE_Sodium_Core_Curve25519::ge_msub()
@internal You should not use this directly from another application
Parameters
ParagonIE_Sodium_Core_Curve25519_Ge_P1p1 $R:
ParagonIE_Sodium_Core_Curve25519_Ge_P3 $p:
ParagonIE_Sodium_Core_Curve25519_Ge_Precomp $q:
Return value
ParagonIE_Sodium_Core_Curve25519_Ge_P1p1
1 call to ParagonIE_Sodium_Core_Curve25519::ge_msub()
- ParagonIE_Sodium_Core_Curve25519::ge_double_scalarmult_vartime in vendor/
paragonie/ sodium_compat/ src/ Core/ Curve25519.php - @internal You should not use this directly from another application
File
- vendor/
paragonie/ sodium_compat/ src/ Core/ Curve25519.php, line 1454
Class
- ParagonIE_Sodium_Core_Curve25519
- Class ParagonIE_Sodium_Core_Curve25519
Code
public static function ge_msub(ParagonIE_Sodium_Core_Curve25519_Ge_P1p1 $R, ParagonIE_Sodium_Core_Curve25519_Ge_P3 $p, ParagonIE_Sodium_Core_Curve25519_Ge_Precomp $q) {
$r = clone $R;
$r->X = self::fe_add($p->Y, $p->X);
$r->Y = self::fe_sub($p->Y, $p->X);
$r->Z = self::fe_mul($r->X, $q->yminusx);
$r->Y = self::fe_mul($r->Y, $q->yplusx);
$r->T = self::fe_mul($q->xy2d, $p->T);
$t0 = self::fe_add($p->Z, $p->Z);
$r->X = self::fe_sub($r->Z, $r->Y);
$r->Y = self::fe_add($r->Z, $r->Y);
$r->Z = self::fe_sub($t0, $r->T);
$r->T = self::fe_add($t0, $r->T);
return $r;
}