well im no cryptography expert, but everything i have studied about it so far has lead me to believe that this shouldn't be complicated at all. It is the same principle as generating a public key from a private one through a one way function (granted you are going from public to private in this sense). I think this could be very important in the future if keyhotee really catches on. Imagine if websites use keyhotee reputation (or any other attributes, like number of times flagged, or places banned, etc) as a spam deterrent, and began weighting comments based on better user reputation, likes, etc. In a situation like that it would immensely important to give users the ability to post anonymously but not be crippled (have their post buried at the bottom of long threads) for choosing to do so.