laut https://steemit.com/security/@noisy/public-and-private-keys-how-they-are-used-by-steem-making-all-of-these-possible-you-can-find-answer-here
keine kenntnis über den eigenen privaten key

"For now, just please remember that your keys are generated from your password on the fly every time you provide it, and some of them are stored in localstorage of your browser. One of my next articles will go into details how this is done."