@b0rk@social.jvns.ca @divVerent@misskey.de Not sure what you're asking but might it be like the mixing paint example in the video I linked to? In that example, Alice and Bob share a common paint color to which they mix their secret color. They share that combination with each other, add their secret color again to arrive at a shared secret key. Horrible explanation on my part which the video does a much better job at. But I probably am completely misunderstanding your question in which case ignore this!