EntityQ4994879· pop 10· linked from 648 articlescodeSign in to savecipher that operates on semantic tokens, rather than individual symbols or fixed-size blocksConnectionsZimmermann telegramEntitycipherEntityWorld War IIConceptJoseph StalinPersonHarry S. TrumanEntitycommunicationEntitySeptember 11 attacksConceptInternational Standard Book NumberEntitynuclear weaponEntityBBCConceptDavidEntitySpanish Civil WarEntityWayback MachineEntityHenry Wadsworth LongfellowEntitycryptographyEntitybitEntityRobert A. HeinleinEntityAttack on Pearl HarborConceptNational Security AgencyEntityPotsdam ConferenceEntityCategoriesCryptography