In　communication　systems,　ensuring　both　data　integrity　and　confidentiality　is　crucial.　Traditional　methods,　such　as　encryption　and　signature　schemes,　handle　these　aspects　separately,　leading　to　inefficiencies.　Signcryption　techniques,　which　address　both　requirements　simultaneously,　present　a　more　efficient　alternative.　Nonetheless,　they　are　unsuitable　for　cloud　storage　systems　due　to　their　reliance　on　original　files　for　data　auditing.　Remote　data　integrity　checking　(RDIC)　methods　resolve　this　issue　but　compromise　data　confidentiality.　To　bridge　the　gap　between　signcryption　and　RDIC　approaches,　remote　signcryption　(RSC)　has　been　proposed.　However,　existing　RSC　methods　lack　support　for　public　auditing,　rendering　data　auditing　non-outsourcable.　This　paper　introduces　publicly　verifiable　remote　signcryption　(PVRSC)　to　address　this　shortcoming　and　presents　the　first　concrete　PVRSC　scheme　with　public　verifiability.　We　define　the　security　model　for　PVRSC　and　prove　its　robustness　based　on　the　hardness　of　the　Bilinear　Diffie-Hellman　(BDH)　problem.　Our　implementation　on　real　data　shows　that　PVRSC　significantly　outperforms　existing　methods,　achieving　speeds　up　to　100　times　faster　and　reducing　communication　costs　by　half　compared　to　RDIC　methods.　For　outsourced　data　up　to　5MB,　PVRSC　maintains　a　communication　cost　below　8KB　during　data　recovery,　a　substantial　improvement　over　classical　signcryption　approaches,　which　exceed　5MB.　　©　2014　IEEE.