/**
  * @dataProvider providerRfc5869
  */
 public function testRfc5869($hash, $ikm, $salt, $info, $L, $prk, $okm)
 {
     $ikm = pack('H*', $ikm);
     $salt = pack('H*', $salt);
     $info = pack('H*', $info);
     $okm = pack('H*', $okm);
     $result = MWCryptHKDF::HKDF($hash, $ikm, $salt, $info, $L);
     $this->assertEquals($okm, $result);
 }