WAACS encryption key controversyWANOMWBabington PlotWBATCOWBeale ciphersWCentral BureauWChoctaw code talkersWCipher runesWClipper chipWCode talkerWThe CodebreakersWCommercial code (communications)WCopiale cipherWCrypto WarsWCryptogramWDorabella CipherWFar East Combined BureauWFBI–Apple encryption disputeWWilhelm FennerWFish (cryptography)WWalter FrickeWGerman Army cryptographic systems of World War IIWGulf of Tonkin incidentWKryptosWRAF raid on La Caine (1944)WSMS MagdeburgWBattle of MidwayWOperation RuthlessWPolygraphia NovaWUSS Pueblo (AGER-2)WRoom 40WRoom 641AWSecret decoder ringWSIGTOTWSyllabical and Steganographical TableWWilhelm TranowWGerman submarine U-505WUnited States Naval Computing Machine LaboratoryWUSS Liberty incidentWVoynich manuscriptWZimmermann Telegram