public function testSign() { $keypair = KeyFactory::generateSignatureKeyPair(); $secretkey = $keypair->getSecretKey(); $publickey = $keypair->getPublicKey(); $signature = File::signFile(__DIR__ . '/tmp/paragon_avatar.png', $secretkey); $this->assertTrue(File::verifyFile(__DIR__ . '/tmp/paragon_avatar.png', $publickey, $signature)); }