EntityQ1059963· pop 12· linked from 73 articleschallenge–response authenticationSign in to savetype of authentication protocolConnectionsInternetEntityInternational Standard Book NumberEntityalgorithmEntityQ11368Entitycomputer programEntitydigital object identifierEntitycomputer securityEntityUnited States Armed ForcesEntitypasswordEntityencryptionEntityCAPTCHAEntityInternet botEntityCaesar cipherEntityoptical character recognitionEntitySecure ShellEntityauthenticationEntityRSAEntityRequest for CommentsEntitychannelEntityQ22908627EntityCategoriesAuthentication methodsComputer access control