original_string: protected function generateSecureHash($hashIdentifier, $data)
      {
          // mitigate rainbow table attack
          $halfDataLen = strlen($data) / 2;
  
          $stringToHash = $hashIdentifier
                        . substr($data, 0, $halfDataLen)
                        . $this->getSalt()
                        . substr($data, $halfDataLen)
                        ;
  
          return $this->hashData($stringToHash);
      }
code: protected function generateSecureHash($hashIdentifier, $data)
      {
          // mitigate rainbow table attack
          $halfDataLen = strlen($data) / 2;
  
          $stringToHash = $hashIdentifier
                        . substr($data, 0, $halfDataLen)
                        . $this->getSalt()
                        . substr($data, $halfDataLen)
                        ;
  
          return $this->hashData($stringToHash);
      }
code_tokens: protected function generateSecureHash ( $ hashIdentifier , $ data ) { // mitigate rainbow table attack $ halfDataLen = strlen ( $ data ) / 2 ; $ stringToHash = $ hashIdentifier . substr ( $ data , 0 , $ halfDataLen ) . $ this -> getSalt ( ) . substr ( $ data , $ halfDataLen ) ; return $ this -> hashData ( $ stringToHash ) ; }
docstring: Generates a hash using a hash "identifier" and some data to hash. The hash identifier is
  a string that differentiates the hash in some way.
  
  We can't get the identifier back from a hash but we can tell if a hash is the hash for
  a specific identifier by computing a hash for the identifier and comparing with the
  first hash.
  
  @param string $hashIdentifier A unique string that identifies the hash in some way, can,
  for example, be user information or can contain an expiration date,
  or whatever.
  @param string $data Any data that needs to be hashed securely, ie, a password.
  @return string The hash string.
docstring_tokens: Generates a hash using a hash identifier and some data to hash . The hash identifier is a string that differentiates the hash in some way .