Earlier quoted context omitted.
Apple specifically stated that your fingerprint is stored and encrypted only on the A7 chip, and not iCloud or anywhere else. It's mentioned in the video as well: http://www.apple.com/iphone-5s/videos/#video-touch
Yes. And how exactly do we check this? Why is it that we can still trust Apple? For all we know, the data gets sent directly to the NSA or, if it doesn't, there might be some secret backdoor that will make the device send the data at a later point. The last round of leaks was specifically talking about backdoors with all bigger US companies in order to circumvent encryption. That's what I means by "we have to conside…
edit: Also, there is a difference between a subtle crypto vulnerability and sending data to a server that, according to the announcement, is designed to be protected in its own enclave and never sent anywhere. The latter would be far more obvious in the code and easier to spot.