Aiming　at　the　problems　of　limited　computing　power　and　high　security　requirements　of　mobile　Internet　mobile　terminal　devices,　we　propose　a　server-assisted　verification　partial　blind　proxy　re-signature　scheme.　Partial　blind　proxy　re-signature　algorithm　protects　both　the　trustee’s　privacy　message　and　the　agent’s　legal　rights.　In　the　server-assisted　authentication　protocol,　the　verifier　transfers　the　complex　bilinear　pairing　operation　task　to　the　server　through　the　interaction,　thereby　reducing　the　amount　of　computation　of　the　verifier.　The　numerical　experiments　show　that　the　verification　efficiency　of　the　new　scheme　is　improved　by　at　least　71%　and　74%,　respectively,　compared　with　the　Yang’s　and　Feng’s　schemes.　©　Springer　Nature　Singapore　Pte　Ltd　2020.