Thanks, Sarciszewski for raising this. Apologies for deleting the comment - that was a fat finger. We're using RGN for non-security related operations. If you want to learn more about the issue and join the full discussion, the thread is here https://github.com/stormpath/stormpath-sdk-php/issues/132

If you want to chat directly, feel free to reach out us at [email protected]. Happy to talk!