/**
* @param \Math_BigInteger $n
* @param \Math_BigInteger $d
* @return RSAPrivateKey
*/
public function buildMinimalPrivateKey(\Math_BigInteger $n, \Math_BigInteger $d)
{
$this->rsa_imp->modulus = $n;
$this->rsa_imp->exponent = $d;
$private_key_pem = $this->rsa_imp->_getPrivatePublicKey();
return new _RSAPrivateKeyPEMFornat($private_key_pem);
}