classical cipher
C17363
concept
A classical cipher is an encryption method that transforms plaintext into ciphertext using simple, typically manual operations such as substitution or transposition, often based on a secret key.
Observed surface forms (8)
- cipher machine ×3
- cipher ×2
- polyalphabetic substitution cipher ×2
- cipher device ×1
- manual encryption technique ×1
- polygraphic substitution cipher ×1
- polyalphabetic substitution aid ×1
- tabular cipher device ×1
Instances (10)
- Enigma machine via concept surface "cipher machine"
- Lorenz cipher via concept surface "cipher machine"
- Tunny cipher via concept surface "cipher"
- Albam
- Atbash
- Alberti cipher disk via concept surface "cipher device"
-
de Vigenère
via concept surface "polyalphabetic substitution cipher"
surface form: Vigenère cipher
- Vigenère table via concept surface "tabular cipher device"
- Playfair cipher via concept surface "cipher"
- German naval Enigma via concept surface "cipher machine"