I tried use 6144 bits RSA key but this has been taking so much time as around of 5 - 7 seconds to generate key pair, I think it's too long. On the other side, using keys with less length may become unsecure in the nearby future and can be cracked with quantum cumputers. And I heard even large RSA keys(6144 - 8196 bits) also can be unsafe in the face of quantum computers. Maybe I have to use ML-KEM? But ML-KEM is new, and there is no good tutorials about it yet. Or maybe use some other algorhytm(not ML-KEM and not RSA) but somthng else different? My purpose is to safefy key exgange. I searching alternative of RSA. I am working witn C++/CLI .NET and using SDK crypto library for creating .exe app for windows, but maybe later also for android, linux and ios. Can you recommend me something guys?