/**
* 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\PrePersist
*
* Hashing and encrypting before persisting an entity
*/
public function RavelPhase(StashedDataPackage $stashedDataPackage, LifecycleEventArgs $event)
{
$stashedDataPackage->setTimeOfDying();
$stashedDataPackage->setData($this->_cipher->encrypt($stashedDataPackage->getData(), $stashedDataPackage->getHashBeta(), $stashedDataPackage->getSaltBeta()));
$stashedDataPackage->setHashBeta($this->_hasher->hashBcrypt($stashedDataPackage->getHashBeta()));
$stashedDataPackage->setHashGamma($this->_hasher->hashSha($stashedDataPackage->getHashGamma()));
//Generate CSPRNG key and IV for cipher
$cipherCredentials = ['key' => $this->_salter->getCSPRNG(32), 'iv' => $this->_salter->getCSPRNG(16)];
//Write key and IV to a file named by sha512() from hash γ
$this->_yamler->writeCipherFile($fileName = $stashedDataPackage->getHashGamma(), $cipherCredentials['key'], $cipherCredentials['iv']);
$this->_yamler->setCipherFileName($fileName);
$stashedDataPackage->setHashBeta($this->_cipher->encrypt($stashedDataPackage->getHashBeta(), $cipherCredentials['key'], $cipherCredentials['iv']));
$stashedDataPackage->setHashGamma($this->_cipher->encrypt($stashedDataPackage->getHashGamma(), $cipherCredentials['key'], $cipherCredentials['iv']));
}