Cabinet Noir
>Encrypt / Alberti cipher
Not sure which cipher? Identify it
English
Français
Українська
The first polyalphabetic cipher: two rotating discs switch alphabets every few letters.
Type
polyalphabetic substitution cipher
Breaking it
easy to break by hand
Era
15th century
Name
Devised by Leon Battista Alberti around 1467 on his cipher disk, Formula.
Modes
encrypt · decrypt · cryptoanalysis
Show less
Tool
Cryptoanalysis
Learn
History
Practice
Message
i
A
B
C
D
E
F
G
I
L
M
N
O
P
Q
R
S
T
V
X
Z
1
2
3
4
<
m
q
i
h
f
d
b
a
c
e
g
k
l
n
p
r
t
u
z
&
x
y
s
o
>
i
Shift size
3
i
Period length
2
i
Did you like it?
Buy me a coffee
About Cabinet Noir
Suggest a feature
Report a bug
Created by Denys Grybov in 2021
v.0.4.0 // released on 18.10.2026