/**
* In the event a private number/key has not been set by the user,
* or generated by ext/openssl, a best attempt will be made to
* generate a random key. Having a random number generator installed
* on linux/bsd is highly recommended! The alternative is not recommended
* for production unless without any other option.
*
* @return string
*/
protected function _generatePrivateKey()
{
$rand = $this->_math->rand($this->getGenerator(), $this->getPrime());
return $rand;
}
