Does anyone recognize this encoding/hashing scheme?

NeXhvl7xclp163waevE9Eg==
QsWGNQXLkxqDO+HgmlVSSw==


Including the equal signs it's 24 characters long (22 without).

I thought the trailing equal signs might give me a clue but I've been unable to match them to anything.

Even tried encoding the original strings via multiple encoders/hashes, via tools like:
http://www.paulschou.com/tools/xlate/
http://www.yellowpipe.com/yis/tools/encrypter/index.php
http://www.businessinfo.co.uk/labs/h...hackvertor.php