Crypto & Security
Substitution Cipher Breaker
Combine hill-climbing, simulated annealing, and frequency attacks to recover plaintext.
Updated 2024-01-15
Substitution Cipher Breaker
Letter frequencies and Caesar shift guesses for monoalphabetic ciphers.
A0.00%
B0.00%
C0.00%
D0.00%
E0.00%
F0.00%
G0.00%
H0.00%
I0.00%
J0.00%
K0.00%
L0.00%
M0.00%
N0.00%
O0.00%
P0.00%
Q0.00%
R0.00%
S0.00%
T0.00%
U0.00%
V0.00%
W0.00%
X0.00%
Y0.00%
Z0.00%
Top Caesar shift guesses
Shift 0 (score 100.17)
Shift 1 (score 100.17)
Shift 2 (score 100.17)
Shift 3 (score 100.17)
Shift 4 (score 100.17)
Ciphertext (copy)
Ciphertext will appear here.