Julius Caesar cipher
Vigenère cipher
cipherlike
ROT13
Feistel network
foursquare
cryptocystal
cryptic
cryptographics
cryptorchis
microaphanitic
cryptocyanin
cryptogamic
cryptograph
cryptonymic
nomenclator
polygraphy
cryptogrammatical
pigpen
substitution code
pancryptodiran
cipherdom
cryptophyte
crypto-
codemaking
cryptosystem
monoliteral
cryptologically
cryptonymous
cryptococcic
keyphrase
cryptonymy
rubber-hose cryptanalysis
cryptogenicity
cryptogrammatic
Theban alphabet
cryptate
encrypt
autokey
cryptogenous
cryptomathematical
cryptosporidian
cryptomathematics
cryptolectal
undercraft
cryptology
cryptography
cryptofunction
cryptoendolithic
cryptanalytics