전기학회논문지 (The Transactions of The Korean Institute of Electrical Engineers)

  • 제67권12호
  • /
  • Pages.1685-1689
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  • 2018
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  • 1975-8359(pISSN)
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  • 2287-4364(eISSN)
대한전기학회 (The Korean Institute of Electrical Engineers)
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Feasibility Analysis of Majority Attacks on Blockchains

  • Kim, Il-Hwan (Dept. of Electrical and Electronic Engineering, Kangwon National University)
  • 투고 : 2018.10.22
  • 심사 : 2018.11.03
  • 발행 : 2018.12.01
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초록

In this research, 51% attack or majority attack is becoming an important security issue for proof of work based blockchains. Due to decentralized nature of blockchains, any attacks that shutdowns the network or which take control over the network is hard to prevent and assess. In this paper, different types of majority attack are summarized and the motivations behind the attacks are explained. To show the feasibility of the majority attack, we build an example mining machines that can take control over two of the public blockchains, Vertcoin and Monero.

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참고문헌

  1. S. Nakamoto, "Bitcoin: A peer-to-peer electronic cash system", URL http://bitcoin.org, 2008.
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  6. I. Eyal and E. G. Sirer, "Majority is not enough: Bitcoin mining is vulnerable", Communications of the ACM, vol. 61, no. 7, pp. 95-102, 2018. https://doi.org/10.1145/3212998
  7. http://en.bitcoin.it/wiki/Block_timestamp
  8. http://litecoin.info/index.php/Time_warp_attack
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  10. D. Meshkov, A. Chepurnoy and M. Jansen, "Short Paper: Revisiting Difficulty Control for Blockchain Systems. In Data Privacy Management, Cryptocurrencies and Blockchain Technology", Springer, pp. 429-436, 2017.
  11. http://vertcoin.org
  12. http://getmonero.org
  13. http://www.ethdocs.org/en/latest/