<?php
namespace mindplay\blowfish;
use RuntimeException;
BlowfishService::init();
/**
* This class provides a simple wrapper around the Blowfish cipher.
*
* This class will throw (immediately on load) on PHP versions prior to 5.3.7, which
* had a broken implementation of the Blowfish algorithm (and/or would fall back to DES.)
*
* http://www.php.net/security/crypt_blowfish.php
*/
class BlowfishService
{
/** @type int salt length required for Blowfish algorithm */
const SALT_LENGTH = 16;
/** @type string path to the dev/urandom device on Linux */
const DEV_URANDOM = '/dev/urandom';
/** @type string minimum PHP version with proper Blowfish support */
const MIN_PHP_VERSION = '5.3.7';
/**
* @var int cryptographic cost of the Blowfish algorithm
*/
private $_cost;
/**
* @param int $cost cost (iteration count) for the underlying Blowfish-based hashing algorithm (range 4 to 31)
*
* @throws RuntimeException for invalid $cost
*/
