init

2025-10-09 17:41:57 +00:00
commit 7a3b2960f8
146 changed files with 34948 additions and 0 deletions
@@ -0,0 +1,104 @@
+<?php
+require_once __DIR__ . "/../vendor/autoload.php";
+
+class PointCodecTest extends \PHPUnit\Framework\TestCase {
+    function makeShortTest($definition) {
+        $curve = \Elliptic\Curves::getCurve("secp256k1")->curve;
+
+        return function() use($curve, $definition) {
+            $co = $definition["coordinates"];
+            $p = $curve->point($co["x"], $co["y"]);
+
+            // Encodes as expected
+            $this->assertEquals($p->encode('hex'), $definition["encoded"]);
+            $this->assertEquals($p->encodeCompressed('hex'), $definition["compactEncoded"]);
+
+            // Decodes as expected
+            $this->assertTrue($curve->decodePoint($definition["encoded"], 'hex')->eq($p));
+            $this->assertTrue($curve->decodePoint($definition["compactEncoded"], 'hex')->eq($p));
+            $this->assertTrue($curve->decodePoint($definition["hybrid"], 'hex')->eq($p));
+        };
+    }
+
+    function makeMontTest($definition) {
+        $curve = \Elliptic\Curves::getCurve("curve25519")->curve;
+        return function() use ($definition, $curve) {
+            $co = $definition["coordinates"];
+            $p = $curve->point($co["x"], $co["z"]);
+            $encoded = $p->encode('hex');
+            $decoded = $curve->decodePoint($encoded, 'hex');
+            $this->assertTrue($decoded->eq($p));
+            $this->assertEquals($encoded, $definition["encoded"]);
+        };
+    }
+
+    static $shortPointEvenY;
+    static $shortPointOddY;
+
+    public function test_should_throw_when_trying_to_decode_random_bytes() {
+        $this->expectException(\Exception::class);
+        \Elliptic\Curves::getCurve("secp256k1")->curve->decodePoint(
+            '05' .
+            '79be667ef9dcbbac55a06295ce870b07029bfcdb2dce28d959f2815b16f81798');
+    }
+
+    public function test_should_be_able_to_encode_and_decode_a_short_curve_point_with_even_Y() {
+        $f = $this->makeShortTest(self::$shortPointEvenY);
+        $f();
+    }
+
+    public function test_should_be_able_to_encode_and_decode_a_short_curve_point_with_odd_Y() {
+        $f = $this->makeShortTest(self::$shortPointOddY);
+        $f();
+    }
+
+    public function test_should_be_able_to_encode_and_decode_a_mont_curve_point() {
+        $f = $this->makeMontTest([
+            "coordinates" => [
+                // curve25519.curve.g.mul(new BN('6')).getX().toString(16, 2)
+                "x" => '26954ccdc99ebf34f8f1dde5e6bb080685fec73640494c28f9fe0bfa8c794531',
+                "z" => '1'
+            ],
+            "encoded" =>
+                '26954ccdc99ebf34f8f1dde5e6bb080685fec73640494c28f9fe0bfa8c794531'
+           ]);
+        $f();
+    }
+}
+
+PointCodecTest::$shortPointEvenY = [
+            "coordinates" => [
+                "x" => '79be667ef9dcbbac55a06295ce870b07029bfcdb2dce28d959f2815b16f81798',
+                "y" => '483ada7726a3c4655da4fbfc0e1108a8fd17b448a68554199c47d08ffb10d4b8'
+            ],
+            "compactEncoded" =>
+                '02' .
+                '79be667ef9dcbbac55a06295ce870b07029bfcdb2dce28d959f2815b16f81798',
+            "encoded" =>
+                '04' .
+                '79be667ef9dcbbac55a06295ce870b07029bfcdb2dce28d959f2815b16f81798' .
+                '483ada7726a3c4655da4fbfc0e1108a8fd17b448a68554199c47d08ffb10d4b8',
+            "hybrid" =>
+                '06' .
+                '79be667ef9dcbbac55a06295ce870b07029bfcdb2dce28d959f2815b16f81798' .
+                '483ada7726a3c4655da4fbfc0e1108a8fd17b448a68554199c47d08ffb10d4b8'
+            ];
+
+
+PointCodecTest::$shortPointOddY = [
+            "coordinates" => [
+                "x" => 'fff97bd5755eeea420453a14355235d382f6472f8568a18b2f057a1460297556',
+                "y" => 'ae12777aacfbb620f3be96017f45c560de80f0f6518fe4a03c870c36b075f297'
+            ],
+            "compactEncoded" =>
+                '03' .
+                'fff97bd5755eeea420453a14355235d382f6472f8568a18b2f057a1460297556',
+            "encoded" =>
+                '04' .
+                'fff97bd5755eeea420453a14355235d382f6472f8568a18b2f057a1460297556' .
+                'ae12777aacfbb620f3be96017f45c560de80f0f6518fe4a03c870c36b075f297',
+            "hybrid" =>
+                '07' .
+                'fff97bd5755eeea420453a14355235d382f6472f8568a18b2f057a1460297556' .
+                'ae12777aacfbb620f3be96017f45c560de80f0f6518fe4a03c870c36b075f297'
+            ];