affine	affine
atbash	atbash
bifid_delastelle	bifid_delastelle
caesar	caesar
nullcipher	nullcipher
playfair	playfair
polybius	polybius
railfence	railfence
scytale	scytale
simple_substitution	simple_substitution
singlecolumn	singlecolumn
trifid_delastelle	trifid_delastelle
vigenere	vigenere
