+++ /dev/null
-<?php
-/**
- * A TestUnitKeyProducer iterator
- *
- * @author Roland Haeder <webmaster@shipsimu.org>
- * @version 0.0.0
- * @copyright Copyright (c) 2007, 2008 Roland Haeder, 2009 - 2015 Hub Developer Team
- * @license GNU GPL 3.0 or any newer version
- * @link http://www.shipsimu.org
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation, either version 3 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program. If not, see <http://www.gnu.org/licenses/>.
- */
-class TestUnitKeyProducerIterator extends BaseIterator implements Iterator {
- /**
- * Maximum different bit combinations
- */
- private $maxBits = 0;
-
- /**
- * Key length
- */
- private $keyLength = 0;
-
- /**
- * Current iteration
- */
- private $currentIteration = 0;
-
- /**
- * Protected constructor
- *
- * @return void
- */
- protected function __construct () {
- // Call parent constructor
- parent::__construct(__CLASS__);
-
- // Get key length
- $this->keyLength = $this->getConfigInstance()->getConfigEntry('test_unit_random_secret_key_length');
-
- // Make sure the key length isn't getting to big (32 byte = 256 bit is really, really a lot!)
- assert($this->keyLength <= (8 * 32));
-
- // Set max bits entry
- $this->maxBits = pow(2, $this->keyLength);
-
- // Debug message
- self::createDebugInstance(__CLASS__)->debugOutput('ITERATOR: maxBits=' . $this->maxBits . ',keyLength=' . $this->keyLength . ' bits');
- }
-
- /**
- * Creates an instance of this class
- *
- * @return $iteratorInstance An instance of a Iterator class
- */
- public final static function createTestUnitKeyProducerIterator () {
- // Get new instance
- $iteratorInstance = new TestUnitKeyProducerIterator();
-
- // Return the prepared instance
- return $iteratorInstance;
- }
-
- /**
- * Getter for current value
- *
- * @return $current Current value in iteration
- */
- public function current () {
- // Calculate ASCII string representation of the key number
- $current = $this->dec2asc($this->currentIteration);
-
- // Prepend more zeros
- $current = str_pad($current, ($this->keyLength / 8), chr(0), STR_PAD_LEFT);
-
- // Return it
- return $current;
- }
-
- /**
- * Getter for key from group or generic
- *
- * @return $key Current key in iteration
- * @throws UnsupportedOperationException This method should not be called
- */
- public function key () {
- throw new UnsupportedOperationException(array($this, __FUNCTION__), self::EXCEPTION_UNSPPORTED_OPERATION);
- }
-
- /**
- * Advances to the next entry
- *
- * @return void
- */
- public function next () {
- /*
- * This is of course a very ineffective key generation iterator because
- * it will create a lot of keys that will never decode an encrypted
- * message. If you know a better algorithm which is freely available and
- * can be implemented as an itertator please contact me.
- */
- $this->currentIteration++;
- }
-
- /**
- * Rewinds to the beginning of the iteration
- *
- * @return void
- * @throws UnsupportedOperationException This method should not be called
- */
- public function rewind () {
- throw new UnsupportedOperationException(array($this, __FUNCTION__), self::EXCEPTION_UNSPPORTED_OPERATION);
- }
-
- /**
- * Checks whether the current entry is valid (not at the end of the list)
- *
- * @return void
- */
- public function valid () {
- return ($this->currentIteration <= $this->maxBits);
- }
-}
-
-// [EOF]
-?>