In a way, the data as given is not encoded/encrypted. You just have to figure out the framework used to make sensible results. I guess that describes many encryption systems, but the results of this code does not resolve directly to other characters.
To look at it another way, for example, a very simple encryption by shifting the letters one position would result in the characters ABC being encrypted to BCD. The letters as given in the data in my OP do not decode to other characters, however, the results will reveal a two word message! Think outside the box on this one!