This　paper　proposes　an　authentication　protocol　based　on　a　trusted　connection　architecture　to　manage　the　security　and　reliability　of　the　cloud　service　environment　during　the　communication　process,　improve　the　trust　of　the　cloud　service　platform　toward　vehicles,　and　ensure　that　vehicle　terminals　have　reliable　access　to　cloud　services.　Compared　with　prior　Internet　of　Vehicle　(IoV)　authentication　schemes,　our　scheme　is　the　first　to　include　platform　identification　in　the　authentication　process.　Based　on　the　characteristics　of　the　trusted　connection　architecture,　the　components　that　constitute　the　platform　can　be　assessed　for　security　by　verifying　the　vehicle　platform　identity　and　platform　integrity　metrics,　thereby　eliminating　internal　threats.　In　addition,　the　protocol　proposes　an　authentication　scheme　for　the　IoV　environment,　in　which　the　trusted　authority　only　needs　to　generate　the　user＇s　partial　key　based　on　the　identity,　thereby　avoiding　the　key　escrow　problem　common　to　identity-based　cryptosystems.　Finally,　the　scheme　is　proven　to　be　highly　secure　using　various　approaches,　such　as　Syverson-Van　Oorschot　(SVO)　logical　analysis,　simulated　authentication　via　automated　validation　of　internet　security　protocols　and　applications　(AVISPA),　and　informal　security　analysis.　In　the　identity　authentication　step,　our　method　has　low　computation　and　communication　overhead　when　compared　with　other　schemes　according　to　the　performance　analysis　results.