Publication detail

Experimental Evaluation of Password Recovery in Encrypted Documents

HRANICKÝ, R. MATOUŠEK, P. RYŠAVÝ, O. VESELÝ, V.

Original Title

Experimental Evaluation of Password Recovery in Encrypted Documents

Type

conference paper

Language

English

Original Abstract

Many document formats and archiving tools (PDF, DOC, ZIP) support encryption to protect privacy of the sensitive contents. The encryption is based on common cryptography algorithms as AES, SHA, RC4. For forensic purposes, investigators are often challenged to analyze these encrypted documents. The task of password recovery can be solved by exhaustive state space search using dictionaries or password generators augmented with heuristic rules to speed up the recovery. In our experimental study, we focus on the password recovery of popular document and archiving formats using parallel computation on common hardware with multicore CPUs or accelerated with GPU processors. We show how recovery time can be estimated based on alphabet, maximal password length and performance of given hardware. Our results are demonstrated on Wrathion, a tool developed by our research team.

Keywords

Password Recovery, Privacy, Digital Forensics, Encrypted Documents

Authors

HRANICKÝ, R.; MATOUŠEK, P.; RYŠAVÝ, O.; VESELÝ, V.

Released

19. 2. 2016

Publisher

SciTePress - Science and Technology Publications

Location

Roma

ISBN

978-989-758-167-0

Book

Proceedings of ICISSP 2016

Pages from

299

Pages to

306

Pages count

8

URL

http://www.scitepress.org/DigitalLibrary/PublicationsDetail.aspx?ID=Dly3xWiSKbs=&t=1

BibTex

@inproceedings{BUT119933,
  author="Radek {Hranický} and Petr {Matoušek} and Ondřej {Ryšavý} and Vladimír {Veselý}",
  title="Experimental Evaluation of Password Recovery in Encrypted Documents",
  booktitle="Proceedings of ICISSP 2016",
  year="2016",
  pages="299--306",
  publisher="SciTePress - Science and Technology Publications",
  address="Roma",
  doi="10.5220/0005685802990306",
  isbn="978-989-758-167-0",
  url="http://www.scitepress.org/DigitalLibrary/PublicationsDetail.aspx?ID=Dly3xWiSKbs=&t=1"
}

Documents

ICISSP_2016_40.pdf