Sökning: "Sybil"

Visar resultat 1 - 5 av 9 uppsatser innehållade ordet Sybil.

  1. 1. Advanced Hardened Registration Process for Mobile Crowd Sensing

    Master-uppsats, KTH/Skolan för elektroteknik och datavetenskap (EECS)

    Författare :Ronghua Li; [2022]
    Nyckelord :Mobile Crowd Sensing; Sybil detection; Android; Native coding; Bluetooth Low Energy; Mobil Crowd Sensing; Sybil detektering; Android; Native kodning; Bluetooth Low Energy;

    Sammanfattning : Mobile Crowd Sensing (MCS) or Participatory Sensing (PS) are two emerging systems as smart mobile devices become ubiquitous. One of the advantages of such a sensing system is that almost anyone with a mobile device can become a moving "sensor". LÄS MER

  3. 2. A decentralized Git version controlsystem : A proposed architecture and evaluation of decentralized Git using DAG-based distributed ledgers

    Master-uppsats, Linköpings universitet/Programvara och system

    Författare :Christian Habib; Ilian Ayoub; [2022]
    Nyckelord :Blockchain; Distributed ledger technology; Git; Version control systems; Software Security; Web3; Misuse cases;

    Sammanfattning : This thesis proposes an implementation for a decentralized version of the Git version controlsystem. This is achieved using a simple distributed DAG ledger. The thesis analyzeshow the decentralization of Git affects security. Use and misuse cases are used to compareand evaluate conventional Git web services and a decentralized version of Git. LÄS MER

  4. 3. Towards Engineering Trustworthy Distributed Reputation Systems Over The Blockchain

    Kandidat-uppsats, Malmö universitet/Fakulteten för teknik och samhälle (TS)

    Författare :Georg Grankvist; Paul Moustakas; [2022]
    Nyckelord :Blockchain; Ethereum; Smart Contract; NFT; Bank-ID; Software Architecture; Reputation Systems; Sybil Attack; Re-entry Attack; P2P; Distributed;

    Sammanfattning : Peer-to-peer (P2P) reputation systems, such as those used by eBay and Amazon, servean important role on the web, especially in E-commerce, as online reputation serves asa primary guiding factor for consumers in making informed decisions. The importanceof these systems, and also the increasing popularity of P2P and distributed systems, theissue of how to prevent and resist sybil and re-entry attacks becomes an important area ofresearch as they can impinge the integrity of those systems. LÄS MER

  5. 4. Simulating ADS-B vulnerabilities by imitating aircrafts : Using an air traffic management simulator

    Kandidat-uppsats, Linköpings universitet/Institutionen för datavetenskap

    Författare :Axel Boström; Oliver Börjesson; [2022]
    Nyckelord :ADS-B; ATC; Impersonation attack; Sybil attack; Air Traffic Communication; openScope; Security; Machine learning; K nearest neighbour; Naive Bayes; Decision tree;

    Sammanfattning : Air traffic communication is one of the most vital systems for air traffic management controllers. It is used every day to allow millions of people to travel safely and efficiently across the globe. LÄS MER

  7. 5. A Cloud-native Vehicular Public Key Infrastructure : Towards a Highly-available and Dynamically- scalable VPKIaaS

    Master-uppsats, KTH/Skolan för elektroteknik och datavetenskap (EECS)

    Författare :Hamid Noroozi; [2021]
    Nyckelord :Security; Privacy; Vehicular PKI; VPKI; Identity and Credential Management; Vehicular Communications; VANETs; Availability; Scalability; Resilient; Efficiency; Microservice; Container Orchestration; Cloud; Pseudonym Transition; Pseudonym Unlinkability.; Säkerhet; personlig integritet; identitet- och behörighetsuppgifter; tillgänglighet; skalbarhet; motståndskraftig; effektivitet; moln; pseudonymitet; anonymitet; ospårbarhet.;

    Sammanfattning : Efforts towards standardization of Vehicular Communication Systems (VCSs) have been conclusive on the use of Vehicular Public-Key Infrastructure (VPKI) for the establishment of trust among network participants. Employing VPKI in Vehicular Communication (VC) guarantees the integrity and authenticity of Cooperative Awareness Messages (CAMs) and Decentralized Environmental Notification Messages (DENMs). LÄS MER