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A comment on Can Apple read your iMessages?. Parent comment

Re:Can Apple read your iMessages? by anologwintermut on Wednesday June 26, 2013 @12:51PM (#5947230)
He reset his password using the IForgot service. So either data is encrypted under a key apple has or its encrypted under a key derived from your secret answers( which is unlikely). In the latter case, Apple might as well have your key given the limited entropy
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Re:Can Apple read your iMessages? by epistasis on Wednesday June 26, 2013 @03:27PM (#5948389)
Or it could be encrypted by a random key with high entropy, that Apple does not have, because it is encrypted by a key derived from your password. See, for example, LUKS:

http://en.wikipedia.org/wiki/Linux_Unified_Key_Setup

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Re:Can Apple read your iMessages? by anologwintermut on Thursday June 27, 2013 @02:26PM (#5953872)
And that key got onto his new device how precisely? Observed behavior was reset password with questions/email, prevision a new device, get old chats on new divice. If the new device had the old encryption key, how did it get there?
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