# Tag Info

Your problem is stronger than DBDH problem. Because any oracle that response to your problem, can response to DBDH. I think that you must try to reduce this problem to DDH. This mean that input $(e(g,g),P=e(g,g)^x,R=e(g,g)^y,Q)$ and decide whether $Q=e(g,g)^{xy}$.