Detail publikace

Increasing Trust in Tor Node List Using Blockchain

HELLEBRANDT, L. HOMOLIAK, I. MALINKA, K. HANÁČEK, P.

Originální název

Increasing Trust in Tor Node List Using Blockchain

Typ

článek ve sborníku ve WoS nebo Scopus

Jazyk

angličtina

Originální abstrakt

Tor is a low-latency free anonymization network based on onion routing. In Tor, directory servers maintain a list of all nodes. It is, however, possible for a powerful adversary (e.g., law enforcement agencies) to seize or compromise enough directory servers and thus forge that list. Therefore, clients that obtained such a forged list of nodes can be effectively deanonymized. As a countermeasure, we propose to utilize a permissioned blockchain with a single voting committee that is privately 'elected' by a verifiable random function (VRF). Since the blockchain provides us with integrity guarantees by design, we increase trust in the directory servers by decentralizing management of Tor nodes present in the shared list. We apply skiplist as an optimization reducing a validation overhead of newly joined nodes and clients. The proposed approach has only a small performance impact on the existing Tor infrastructure.

Klíčová slova

computer network security, cryptocurrencies, cryptographic protocols, peer-to-peer computing, routing protocols, telecommunication security

Autoři

HELLEBRANDT, L.; HOMOLIAK, I.; MALINKA, K.; HANÁČEK, P.

Vydáno

17. 5. 2019

Nakladatel

Institute of Electrical and Electronics Engineers

Místo

Soul

ISBN

978-1-7281-1328-9

Kniha

2019 IEEE International Conference on Blockchain and Cryptocurrency (ICBC)

Strany od

29

Strany do

32

Strany počet

4

BibTex

@inproceedings{BUT162597,
  author="Lukáš {Hellebrandt} and Ivan {Homoliak} and Kamil {Malinka} and Petr {Hanáček}",
  title="Increasing Trust in Tor Node List Using Blockchain",
  booktitle="2019 IEEE International Conference on Blockchain and Cryptocurrency (ICBC)",
  year="2019",
  pages="29--32",
  publisher="Institute of Electrical and Electronics Engineers",
  address="Soul",
  doi="10.1109/BLOC.2019.8751340",
  isbn="978-1-7281-1328-9"
}