/**
* Encrypts hash γ same way as during ravel process to find corresponding message
*/
public function prePhase(StashedDataPackage $stashedDataPackage)
{
$stashedDataPackage->setHashGamma($this->_hasher->hashSha($stashedDataPackage->getHashGamma()));
$cipherCredentials = $this->_yamler->readCipherFile($fileName = $stashedDataPackage->getHashGamma());
if (!$cipherCredentials) {
return $stashedDataPackage->setError('UnravelFilter::prePhase - cipher file not found');
}
$this->_flashStorage->rememberCipherFileName($stashedDataPackage->getHashGamma());
$this->_flashStorage->rememberCipherCredentials($cipherCredentials);
$stashedDataPackage->setHashGamma($this->_cipher->encrypt($stashedDataPackage->getHashGamma(), $cipherCredentials['key'], $cipherCredentials['iv']));
return $stashedDataPackage;
}
/**
* @ORM\PostLoad
*
* Decrypting data after finding one in DB
*/
public function UnravelPhase(StashedDataPackage $stashedDataPackage, LifecycleEventArgs $event)
{
//Event triggers only if hash β is present in current request
$clientHashBeta = $this->_stashedDataPackageManager->getClientHashBeta();
if ($clientHashBeta) {
$cipherCredentials = $this->_flashStorage->recallCipherCredentials();
$hashServerBeta = $this->_cipher->decrypt(stream_get_contents($stashedDataPackage->getHashBeta()), $cipherCredentials['key'], $cipherCredentials['iv']);
if ($this->_hasher->verifyHashBcrypt($clientHashBeta, $hashServerBeta)) {
$cipherData = stream_get_contents($stashedDataPackage->getData());
$stashedDataPackage->setData($this->_cipher->decrypt($cipherData, $clientHashBeta, $stashedDataPackage->getSaltBeta()));
} else {
$stashedDataPackage->setError("StashedDataPackagePhase::UnravelPhase - no record found");
}
}
}
