Is this the entire unencrypted dump?
I think this is a batch that FOIA made available to a number of blogs....and there are more unavailable without a password ....on a website somewhere.
******************************EXCERPT******************************************
TheBigYinJames says:
You wont break AES-256 (the encryption used by 7-zip) in a zillion years, but no matter, have fun trying :)
I do love the way that we all now have all of the emails, but we cant read them until the key is released this makes further revelations very easy to do without any more uploading of files to dodgy servers. Just the key posted on a blog and the whole lot is out.
Clever.