Cryptology ePrint Archive: Report 2019/1149

LockDown: Balance Availability Attack against Lightning Network Channels

Cristina Pérez-Solà and Alejandro Ranchal-Pedrosa and Jordi Herrera-Joancomartí and Guillermo Navarro-Arribas and Joaquin Garcia-Alfaro

Abstract: The Lightning Network (LN) is a payment network running as a second layer on top of Bitcoin and other Blockchains. This paper presents the possibility of performing a balance lockdown in the LN due to misbehaving nodes associated to a given channel. We formalize and introduce a practical attack, minimizing the economic cost of the attack. We present results that validate our claims, and provide experimental results and potential countermeasures to handle the problem.

Category / Keywords: applications / Bitcoin; Blockchain; Network Security; Off-chain payments channels; Lightning Network (LN); Denial of Service.

Date: received 3 Oct 2019

Contact author: jordi herrera at uab cat

Available format(s): PDF | BibTeX Citation

Version: 20191007:082110 (All versions of this report)

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