/**
* Generate the SIP-2-4 hash of the specified string. No double hashing is
* employed for this algorithm, though.
*
* @see \Fine47\MicroRouter\Interfaces\Hasher::generate()
*/
public function generate($data, $asRaw = false)
{
if (!is_string($data)) {
$data = serialize($data);
}
$data = sip_hash($this->getSalt(), $data);
if (!$asRaw) {
$data = String::bin2hex($data);
}
return $data;
}
/**
* @see \Fine47\MicroRouter\Interfaces\Encryptor::encryptNumber()
*/
public function encryptNumber($number, $randomize = true)
{
$iv = $this->getIV();
// The data is comprised of the number, a tab character and random data.
$string = $number . "\t";
// Compute the length of the IV.
$keySize = strlen($iv);
// Fill with random characters or a filler?
if (true === $randomize) {
// Randomize the output.
while (0 < strlen($string) % $keySize) {
$string .= self::randChar();
}
} else {
// Is there a salt to be added?
if (is_string($randomize) && !empty($randomize)) {
$string .= $randomize;
}
// Static filler.
$staticFiller = chr(self::CHAR_FILL);
// Fill with a constant character to properly pad the string.
while (0 < strlen($string) % $keySize) {
$string .= $staticFiller;
}
}
// Prepare encryption buffers.
mcrypt_generic_init($this->module, $this->getSecret(), $iv);
// Encrypt string.
$string = mcrypt_generic($this->module, $string);
// Free resources.
mcrypt_generic_deinit($this->module);
// Turn it into hex.
$string = String::bin2hex($string);
return $string;
}
