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The Moderately Hard DoS-Resistant Authentication Protocol on Client Puzzles
Volume 27, Issue 1 (2016), pp. 31–48
Min-Shiang Hwang   Song-Kong Chong   Hsia-Hung Ou  

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https://doi.org/10.15388/Informatica.2016.75
Pub. online: 1 January 2016      Type: Research Article     

Received
1 June 2014
Accepted
1 December 2014
Published
1 January 2016

Abstract

Denial-of-service (DoS) attacks against server resources exhaustion are a major security threat to the Internet. A number of defense mechanisms have been proposed against such attacks. Recently, Aura et al. proposed a solution to resist DoS attacks against an authentication protocol. However, their puzzle solution cannot guarantee that all of their clients have fair computation time to solve a puzzle. The solution may even render some clients unable to obtain the puzzle solution within the lifetime, resulting in a lack of service from the server. In this paper, a simple solution as well as an applied authentication protocol was proposed.

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Vilnius University

Keywords
authentication CGA client puzzles DoS attacks DDoS attacks fairness computation

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INFORMATICA

  • Online ISSN: 1822-8844
  • Print ISSN: 0868-4952
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