MozillaCTF 2012 – Text Transformation Puzzle (50)

In this challenge we received the first paragraph of the book Flatland and the the key 49665857477f4b40304276. There are two interesting things about this; the paragraph was full of spelling errors and the key translates to mostly ASCII:

[dutchy@azer ~]$ echo "49665857477f4b40304276" | xxd -p -r -

The spelling errors in the text result in this string: pTldwFsySqD. Same length as the key in ASCII, could this be related? Let’s find out!
The usual approach of finding an answer which requires a key is xor, so let’s try that:
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