Computer and Modernization

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CloudDataIntegrityBasedonSBTTotalNodeStorage

  

  1. (1.CollegeofComputerScienceandTechnology,GuizhouUniversity,Guiyang550025,China;
    2.GuizhouProvincialKeyLaboratoryofPublicBigData,Guiyang550025,China)
  • Received:2017-11-22 Online:2018-07-05 Published:2018-07-05

Abstract: Cloudstoragecanprovideuserswithhigh-quality,on-demanddatastorageservices,sothatuserscanenjoyalargeamountofstoragecapacityatlowprices.Butforusers,thecloudstorageserverisnotcompletelytrustworthy,sousersworryaboutthedatastoredinthecloudwillhavesecurityproblems.Whileinordertomeettheapplicationinthecloud,theintegrityvalidationmechanismisrequiredtosupportfulldynamicoperationsandthird-partypubliccertification.Therefore,aclouddataintegrityschemebasedonfullnodestorageisproposed.Abalancedbinarysearchtreestructure—nodesizebalancetree(SizeBalancedTree,SBT)isintroduced,thisstructuremakesallthenodesinthetreecanbeusedtostoretheactualdata,comparedtotheleavesnodestoragetree,nodoubtitreducestheserverspaceoverhead,whilereducingtheheightofthetree,thusreducingthetimecomplexityofbasicoperationssuchasdatainsertionanddeletion.Theschemehasbetterefficiencyinsupportofdynamicoperationandcanwellsupportdataintegrityverificationincloudstorageenvironment.

Key words: cloudstorage, dataintegrity, dynamicoperations, balancedbinarysearchtree, totalnodestorage

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