An Oblivious Password Cracking Server
Date: August 2012
Publication: Anales del WSegI 2011 Workshop de Seguridad Informática
Source 1: http://arxiv.org/pdf/1307.8186v1.pdf
Source 2: http://corelabs.coresecurity.com/index.php?module=Wiki&action=attachment&type=publication&page=An_Oblivious_Password_Cracking_Server&file=paper_jaiio.pdf
Abstract or Summary:
Building a password cracking server that preserves the privacy of the queries made to the server is a problem that has not yet been solved. Such a server could acquire practical relevance in the future: for instance, the tables used to crack the passwords could be calculated, stored and hosted in cloud-computing services, and could be queried from devices with limited computing power.
In this paper we present a method to preserve the confidentiality of a password cracker|wherein the tables used to crack the passwords are stored by a third party|by combining Hellman tables and Private Information Retrieval (PIR) protocols. We provide the technical details of this method, analyze its complexity, and show the experimental results obtained with our implementation.
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