For those who are getting a 20+ character plain text string after deciphering, try searching for
Edited out due to spoiler content.
on Google and then redeciphering. Note that something else is missing. What would be logical to add to make it complete?
EDIT: Sorry, I didn't realize that the search term was a spoiler since I've seen people post the names of relevant Wikipedia articles just a few days ago (and the posts were from 2008)