Earlier quoted context omitted.
I must admit, I'm no Apple fanboy but in this case, I can easily picture a NSA rep threatening Steve Jobs and Steve Jobs telling him to f * off.
I wonder what would a Tim Cook-made iMessage look like from a security standpoint (probably a lot more like Skype/Hangouts than how it works right now).
http://blog.cryptographyengineering.com/2013/06/can-apple-re...
tl;dr:
* Apple distributes the encryption keys
* Multiple keys can be associated with an account (iPhone, Mac – and the NSA?)
* Apple can retain metadata
* Apple doesn't use certificate pinning