105 lines
4.2 KiB
PHP
105 lines
4.2 KiB
PHP
<?php
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require_once __DIR__ . "/../vendor/autoload.php";
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class PointCodecTest extends \PHPUnit\Framework\TestCase {
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function makeShortTest($definition) {
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$curve = \Elliptic\Curves::getCurve("secp256k1")->curve;
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return function() use($curve, $definition) {
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$co = $definition["coordinates"];
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$p = $curve->point($co["x"], $co["y"]);
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// Encodes as expected
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$this->assertEquals($p->encode('hex'), $definition["encoded"]);
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$this->assertEquals($p->encodeCompressed('hex'), $definition["compactEncoded"]);
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// Decodes as expected
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$this->assertTrue($curve->decodePoint($definition["encoded"], 'hex')->eq($p));
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$this->assertTrue($curve->decodePoint($definition["compactEncoded"], 'hex')->eq($p));
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$this->assertTrue($curve->decodePoint($definition["hybrid"], 'hex')->eq($p));
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};
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}
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function makeMontTest($definition) {
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$curve = \Elliptic\Curves::getCurve("curve25519")->curve;
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return function() use ($definition, $curve) {
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$co = $definition["coordinates"];
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$p = $curve->point($co["x"], $co["z"]);
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$encoded = $p->encode('hex');
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$decoded = $curve->decodePoint($encoded, 'hex');
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$this->assertTrue($decoded->eq($p));
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$this->assertEquals($encoded, $definition["encoded"]);
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};
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}
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static $shortPointEvenY;
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static $shortPointOddY;
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public function test_should_throw_when_trying_to_decode_random_bytes() {
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$this->expectException(\Exception::class);
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\Elliptic\Curves::getCurve("secp256k1")->curve->decodePoint(
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'05' .
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'79be667ef9dcbbac55a06295ce870b07029bfcdb2dce28d959f2815b16f81798');
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}
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public function test_should_be_able_to_encode_and_decode_a_short_curve_point_with_even_Y() {
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$f = $this->makeShortTest(self::$shortPointEvenY);
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$f();
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}
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public function test_should_be_able_to_encode_and_decode_a_short_curve_point_with_odd_Y() {
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$f = $this->makeShortTest(self::$shortPointOddY);
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$f();
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}
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public function test_should_be_able_to_encode_and_decode_a_mont_curve_point() {
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$f = $this->makeMontTest([
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"coordinates" => [
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// curve25519.curve.g.mul(new BN('6')).getX().toString(16, 2)
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"x" => '26954ccdc99ebf34f8f1dde5e6bb080685fec73640494c28f9fe0bfa8c794531',
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"z" => '1'
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],
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"encoded" =>
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'26954ccdc99ebf34f8f1dde5e6bb080685fec73640494c28f9fe0bfa8c794531'
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]);
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$f();
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}
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}
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PointCodecTest::$shortPointEvenY = [
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"coordinates" => [
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"x" => '79be667ef9dcbbac55a06295ce870b07029bfcdb2dce28d959f2815b16f81798',
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"y" => '483ada7726a3c4655da4fbfc0e1108a8fd17b448a68554199c47d08ffb10d4b8'
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],
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"compactEncoded" =>
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'02' .
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'79be667ef9dcbbac55a06295ce870b07029bfcdb2dce28d959f2815b16f81798',
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"encoded" =>
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'04' .
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'79be667ef9dcbbac55a06295ce870b07029bfcdb2dce28d959f2815b16f81798' .
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'483ada7726a3c4655da4fbfc0e1108a8fd17b448a68554199c47d08ffb10d4b8',
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"hybrid" =>
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'06' .
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'79be667ef9dcbbac55a06295ce870b07029bfcdb2dce28d959f2815b16f81798' .
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'483ada7726a3c4655da4fbfc0e1108a8fd17b448a68554199c47d08ffb10d4b8'
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];
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PointCodecTest::$shortPointOddY = [
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"coordinates" => [
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"x" => 'fff97bd5755eeea420453a14355235d382f6472f8568a18b2f057a1460297556',
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"y" => 'ae12777aacfbb620f3be96017f45c560de80f0f6518fe4a03c870c36b075f297'
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],
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"compactEncoded" =>
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'03' .
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'fff97bd5755eeea420453a14355235d382f6472f8568a18b2f057a1460297556',
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"encoded" =>
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'04' .
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'fff97bd5755eeea420453a14355235d382f6472f8568a18b2f057a1460297556' .
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'ae12777aacfbb620f3be96017f45c560de80f0f6518fe4a03c870c36b075f297',
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"hybrid" =>
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'07' .
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'fff97bd5755eeea420453a14355235d382f6472f8568a18b2f057a1460297556' .
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'ae12777aacfbb620f3be96017f45c560de80f0f6518fe4a03c870c36b075f297'
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];
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