Hier die Antwort wie versprochen:
An answer from the Dev.Tech-crypto Mozilla (Developer) Goolge Group to this subject can be found here:
Hope it clarifies:
http://groups.google.com/group/mozilla.…885d0624ab4ffe9
http://groups.google.com/group/mozilla.…6c4b5c7f5925223
Also a short citation:
"Thank you,
ecellent dickussion and conclusion we arrived to.
I understand the general consensus is that the statement about unnotified
key transmission [...] is correct, saying: "I know of no way", rather
than "there is no way". (As Nelson Bolyard wrote).
We are all aware that there is no 100% answer (as always in life), but I
assume your knowledge has some weight. "