Caesar Cipher Encryption

Plain Text:

The quick brown fox jumps over the lazy dog

Alphabet Shift Mapping (Shift: 3):

A
↓
D
B
↓
E
C
↓
F
D
↓
G
E
↓
H
F
↓
I
G
↓
J
H
↓
K
I
↓
L
J
↓
M
K
↓
N
L
↓
O
M
↓
P
N
↓
Q
O
↓
R
P
↓
S
Q
↓
T
R
↓
U
S
↓
V
T
↓
W
U
↓
X
V
↓
Y
W
↓
Z
X
↓
A
Y
↓
B
Z
↓
C

Cipher Text:

Frequency Analysis

Most Frequent (Cipher)
-
In analysis...
Detected Shift
0
Analyzing...

Instructions

The Caesar cipher is one of the simplest encryption techniques. Each letter in the plaintext is shifted a fixed number of positions down the alphabet.

Click Play to watch the encryption process word by word. The frequency analysis shows how often each letter appears, which can be used to crack the cipher!

How to Break It

In English, 'E' is the most common letter (~12.7% frequency). By finding the most frequent letter in the cipher text and calculating the shift from 'E', you can break the cipher!

Sorry, this demo is best viewed on a larger screen.

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