[LouieFisk]

“So I agree, these are almost certainly decryption keys for something.”
==
I’d say more likely they are hashes to verify if/when the big file is made available, those who download it can tell they got the real deal.
This is helpful in explaining what the posted numbers may mean:
http://emptylighthouse.com/what-are-numbers-wikileaks-keep-tweeting-john-kerry-ecuador-uk-fco-2086433286

[JamesP81]

I’d say more likely they are hashes to verify if/when the big file is made available, those who download it can tell they got the real deal.

Agree, this is also very likely and, now that I think about it, more likely given the flow of information. Using hashes to verify the source of data and encrypting data are two sides of the same coin anyway.