Ok, so I thought id finally give this a go. I understand XOR encryption and have written a python script to try a list of 4 letter words as keys, and return the key and resulting packets any time at least one of them is in the list. I seem to remeber reading somewhere that there is more than one key, and some of the results ive got seem to indicate that it may be the previous packet as the key to the next one.
I have a single key that returns 4 common words, which stood out as the answer at first, but I get incorrect messages when I submit them. Can I PM someone my workings?