So are you asking if your public key if posted on here could be matched with a record of your public key stored on your computer if someone 'accessed' it? If so then theoretically the answer would be yes, someone could potentially see that they were the same, I have any sensitive information on my computer locked away safely in an encrypted volume only accessible via truecrypt - highly recommended for all. Truecrypt also allows you to set up an inner and outer volume too with a different password for each so if 'forced' to give up a password you just give them the one to the outer volume. It is highly debatable if LE could force you to give up a password anyway if you claim to have forgotten it, ask any IT expert how much time they spend dealing with forgotten passwords. Hope that helps.