public function testSymmetricEncryption()
{
$keyPair1 = ECC::generateKeyPair();
$keyPair2 = ECC::generateKeyPair();
$symmetricKeyA = $keyPair1->calculateSymmetricKey($keyPair2->getPublicKey());
$symmetricKeyB = $keyPair2->calculateSymmetricKey($keyPair1->getPublicKey());
$this->assertEquals($symmetricKeyA, $symmetricKeyB);
// if I wanna encrypt data only for myself to see
$myKey = $keyPair1->calculateSymmetricKey();
$iv = AES::generateInitializationVector();
$original = 'Hello World!';
$encrypted = AES::encrypt($original, $myKey, $iv);
$decrypted = AES::decrypt($encrypted, $myKey, $iv);
$this->assertEquals($original, $decrypted, 'encryption works');
}
