Type: Substitution
√ Atbash is a type of substitution cipher in which the first letter (a) is substituted to the last letter (z), second letter (b) is substituted to penultimate (y), and so on.
A = Z
B = Y
C = X
D = W
E = V
F = U
G = T
H = S
I = R
J = Q
K = P
L = O
M = N