16238255757

Committed 12 Jul 2025 01:00PM UTC coverage: 84.857% (-6.3%) from 91.134%

Build # 16238255757

Build Type

Pull #12

github

Committed by

web-flow

Commit Message

Merge 97611838a into 5ce1049c0

Pull Request Pull Request #12: WIP: Add montgomery

Run Details

270 of 376 new or added lines in 17 files covered. (71.81%)

2 existing lines in 1 file now uncovered.

947 of 1116 relevant lines covered (84.86%)

23.02 hits per line

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72.22

/src/Math/SW_QT_ANeg3_Math.php

<?php

namespace Famoser\Elliptic\Math;

use Famoser\Elliptic\Math\Twister\QuadraticTwister;
use Famoser\Elliptic\Primitives\Curve;
use Famoser\Elliptic\Primitives\Point;
use Famoser\Elliptic\Primitives\QuadraticTwist;

/**
 * Assumes Short Weierstrass curve which can be transformed by a quadratic twist to a Short Weierstrass curve with a=-3.
 *
 * Some hardening against side-channels has been done.
 */
class SW_QT_ANeg3_Math extends AbstractMath implements MathInterface
{
    private readonly QuadraticTwister $twister;
    private readonly SW_ANeg3_Math $math;

    public function __construct(Curve $curve, QuadraticTwist $twist)
    {
        parent::__construct($curve);

        $this->twister = new QuadraticTwister($curve, $twist);
        $twistedCurve = $this->twister->twistCurve();

        $this->math = new SW_ANeg3_Math($twistedCurve);
    }

    public function add(Point $a, Point $b): Point
    {
        $twistedA = $this->twister->twistPoint($a);
        $twistedB = $this->twister->twistPoint($b);

        $twistedResult = $this->math->add($twistedA, $twistedB);

        return $this->twister->untwistPoint($twistedResult);
    }

    public function double(Point $a): Point
    {
        $twistedA = $this->twister->twistPoint($a);

        $twistedResult = $this->math->double($twistedA);

        return $this->twister->untwistPoint($twistedResult);
    }

    public function mul(Point $point, \GMP $factor): Point
    {
        $twisted = $this->twister->twistPoint($point);

        $twistedResult = $this->math->mul($twisted, $factor);

        return $this->twister->untwistPoint($twistedResult);
    }
}

1	<?php
2
3	namespace Famoser\Elliptic\Math;
4
5	use Famoser\Elliptic\Math\Twister\QuadraticTwister;
6	use Famoser\Elliptic\Primitives\Curve;
7	use Famoser\Elliptic\Primitives\Point;
8	use Famoser\Elliptic\Primitives\QuadraticTwist;
9
10	/**
11	* Assumes Short Weierstrass curve which can be transformed by a quadratic twist to a Short Weierstrass curve with a=-3.
12	*
13	* Some hardening against side-channels has been done.
14	*/
15	class SW_QT_ANeg3_Math extends AbstractMath implements MathInterface
16	{
17	private readonly QuadraticTwister $twister;
18	private readonly SW_ANeg3_Math $math;
19
UNCOV 20	public function __construct(Curve $curve, QuadraticTwist $twist)	×
21	{
22	parent::__construct($curve);	×
23
24	$this->twister = new QuadraticTwister($curve, $twist);	×
UNCOV 25	$twistedCurve = $this->twister->twistCurve();	×
26
27	$this->math = new SW_ANeg3_Math($twistedCurve);	×
28	}
29
30	public function add(Point $a, Point $b): Point	21✔
31	{
32	$twistedA = $this->twister->twistPoint($a);	21✔
33	$twistedB = $this->twister->twistPoint($b);	21✔
34
35	$twistedResult = $this->math->add($twistedA, $twistedB);	21✔
36
37	return $this->twister->untwistPoint($twistedResult);	21✔
38	}
39
40	public function double(Point $a): Point	21✔
41	{
42	$twistedA = $this->twister->twistPoint($a);	21✔
43
44	$twistedResult = $this->math->double($twistedA);	21✔
45
46	return $this->twister->untwistPoint($twistedResult);	21✔
47	}
48
49	public function mul(Point $point, \GMP $factor): Point	28✔
50	{
51	$twisted = $this->twister->twistPoint($point);	28✔
52
53	$twistedResult = $this->math->mul($twisted, $factor);	28✔
54
55	return $this->twister->untwistPoint($twistedResult);	28✔
56	}
57	}

famoser / elliptic / 16238255757

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