Design of an Efficient and Secure Smart City Framework Using Blockchain

Abstract: Building smart services for smart cities has become a major focus in modern technological advancements. Mobile scanners play a crucial role in capturing and processing data from various sources. Smart city applications emphasize the need for secure data sharing across heterogeneous devices. However, certain actions taken during data sharing can pose risks to security, privacy, and data integrity. The reliance on a centralized repository has been a major factor in past securitybreaches. Therefore, ensuringsecureauthenticationand the protectionof sensitivedata is crucial formodern applications. Blockchainisawidelyadoptedtechnologythatensuresdataintegrityandsecurity.Thispaperintroducesanovelblockchainbasedframewo rk,SecPrivPreserve,designedtoenhancethesecurityandintegrityofdatageneratedbymobilescanners.Theproposedframeworksecures datathroughmultiplephases,includinginitialization,registration,dataprotection,authentication,accesscontrol,validation,datasharin g,andsecuredownloads.Tostrengthensecurity,SecPrivPreserveintegratesvariousmechanismssuchasencryption,hashing,andauthen ticationtechniquesthatenhanceconfidentiality,privacy,andintegrity.Unliketraditional approachesthat rely on one-time passwords(OTP) for authenticationand data sharing,this frameworkemploys QR codesforsecureaccessand datasharingkeystofurtherenhancesecurity.SincetheSecPrivPreserveframeworkisbuiltonapermissionedblockchain,itinherentlyben efitsfromtamper-proofrecordsandnon-repudiation.Moreover, for data protection techniquesto enhance cryptographicsecurity