One character is not necessarily mapped to multiple characters. As a matter of fact, the funny part is, there is NO padding involved in the encryption. I'm not having the word "Hello" and then adding in letters everywhere and then smudging it all up and then adding in more bullshit. =)
OK... if I encrypt my last Philosophy paper (7 pages double spaced 12pt font) with the same method, will you try to break it? =)
-Warik