Fog　computing　is　a　revolutionary　technology　for　the　next　generation　to　bridge　the　gap　between　cloud　data　centers　and　end-users.　Fog　computing　is　not　a　counterfeit　for　cloud　computing　but　a　persuasive　counterpart.　It　also　accredits　by　utilizing　the　network　edge　while　still　rendering　the　possibility　to　interact　with　the　cloud.　Nevertheless,　the　features　of　fog　computing　are　encountering　several　security　challenges.　The　security　of　end-users　and/or　fog　servers　brings　a　significant　dilemma　in　implementing　fog　computing.　Moreover,　in　conventional　cloud　computing,　the　attribute-based　encryption　(ABE)　technology　is　not　appropriate　for　end　users　due　to　restricted　computing　resources,　i.e.,　limited　resources,　high　end-to-end　delay,　and　transmission　capability.　Hence,　the　revocation　and　outsourcing　mechanisms　become　inappropriate　between　end-users　and　cloud　servers.　In　this　regard,　this　paper　recommends　a　multi-authority　attribute-based　encryption　(MA-ABE)　technique　to　support　revocation　and　outsource　the　attributes　to　fog　computation.　We　present　an　attribute　revocation　scheme　based　on　cipher-text　attribute-based　encryption　by　introducing　the　attribute　group　keys.　In　this　process,　the　secret　keys　are　dynamically　altered　and　realized　the　requirement　of　immediate　attribute　revocations.　Hence,　we　provide　the　complete　encryption　and　decryption　process　for　end-users　and　fog　servers　based　on　multi-authority,　attribute　revocation,　and　outsourcing　computation,　while　most　of　the　existing　scheme　lack　to　incorporate　all　these　parameters.　Our　scheme　also　outsources　the　complicated　encryption　and　decryption　tasks　to　the　fog　server　that　significantly　improves　the　overall　computation　efficiency　compared　to　the　state-of-the-art　work.