/** * @param $base64 * @return array */ public function unserialize($base64) { $binary = base64_decode($base64, true); if ($binary === false) { throw new \InvalidArgumentException('Invalid base64'); } $values = []; $pos = 0; $end = strlen($binary); for ($i = 0; $i < 3; $i++) { if ($end - $pos < 4) { throw new \RuntimeException('Length marker too short'); } $length = unpack("N", substr($binary, $pos, 4))[1]; $pos += 4; if ($end - $pos < $length) { throw new \RuntimeException('Not enough data'); } $value = substr($binary, $pos, $length); $pos += $length; $values[$i] = $value; } $curveName = $values[1]; $pointHex = unpack("H*", $values[2])[1]; $curve = Curves::curve($curveName); $generator = Curves::generator($curveName); $point = $this->pointSerializer->unserialize($curve, $pointHex); $publicKey = new PublicKey($this->math, $generator, $point); return [$curve, $publicKey]; }
/** * @dataProvider getVectors * @param string $curveName * @param string|int $multiplier * @param string $expectedPub */ public function testSerialize($curveName, $multiplier, $expectedPub) { /** @var GeneratorPoint $generator */ $generator = Curves::generator($curveName); $privateKey = $generator->getPrivateKeyFrom(gmp_init($multiplier, 10)); $public = $privateKey->getPublicKey(); $adapter = EccFactory::getAdapter(); $serializer = new SshPublicKeySerializer($adapter, new UncompressedPointSerializer($adapter)); $serialized = $serializer->serialize($curveName, $public); $this->assertEquals($expectedPub, $serialized); list($curve, $publicKey) = $serializer->unserialize($serialized); $this->assertTrue($public->getPoint()->equals($publicKey->getPoint())); }
/** * @expectedException \InvalidArgumentException * @expectedExceptionMessage Unknown or unsupported generator */ public function testRejectsInvalidGenerator() { Curves::generator('not-a-curve'); }
/** * @expectedException \RuntimeException */ public function testSerializeFailsToEncrypt() { /** @var GeneratorPoint $generator */ $generator = Curves::generator('nistp256'); $privateKey = $generator->getPrivateKeyFrom(gmp_init('1')); $method = 'not-a-method'; $iv = random_bytes(16); $cryptKey = new EncryptedPrivateKey($privateKey, $method, $iv); $adapter = EccFactory::getAdapter(); $serializer = new EncryptedPrivateKeySerializer(new DerPrivateKeySerializer($adapter)); $serializer->serialize($cryptKey, 'password'); }