public function retrieve($a, $b)
{
$pos = strpos($this->plaintext_key, $b);
$key = $this->getSubstitutionTableEntry($pos);
$table = new SimpleCipher($this->plaintext_key, $key);
return $table->decrypt($a);
}
/**
* Reset the substitution table to original form
*
* @return $this
*/
protected function _reset()
{
parent::_reset();
$this->substitution_table->setSubstitutions(array(str_split(strrev($this->substitution_table->getPlaintextKey()))));
return $this;
}
/**
* Reset the substitution table to its original form
*
* @return $this
*/
protected function _reset()
{
parent::_reset();
$this->substitution_table->setSubstitutions(array(str_split(Helper::rotate($this->substitution_table->getPlaintextKey(), $this->rotation_value - 1))));
return $this;
}