My 50 cents to it. I hope it’s not too much spoiler. If so, please feel free to delete it.
Your recipe has two ingredients. The first one should be obvious because of RSA. For the 2nd one think of buying some balloons for a party and what you need to do with them before the party starts (= reversing what evil guys often do in their code for example to not being detected by some SIEM or perimeter rules).
Last, but not least: ignore the markers.