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Authors: Reine Lundin ; Thijs Holleboom and Stefan Lindskog

Affiliation: Karlstad University, Sweden

Abstract: In this paper, we investigate in detail the relationship between entropy and guesswork. The aim of the study is to lay the ground for future efficiency comparison of guessing strategies. After a short discussion of the two measures, and the differences between them, the formal definitions are given. Then, a redefinition of guesswork is made, since the measure is not completely accurate. The change is a minor modification in the last term of the sum expressing guesswork. Finally, two theorems are stated. The first states that the redefined guesswork is equal to the concept of cross entropy, and the second states, as a consequence of the first theorem, that the redefined guesswork is equal to the sum of the entropy and the relative entropy.

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Paper citation in several formats:
Lundin, R.; Holleboom, T. and Lindskog, S. (2007). On the Relationship between Confidentiality Measures: Entropy and Guesswork. In Proceedings of the 5th International Workshop on Security in Information Systems (ICEIS 2007) - WOSIS; ISBN 978-972-8865-96-2, SciTePress, pages 135-144. DOI: 10.5220/0002426901350144

@conference{wosis07,
author={Reine Lundin. and Thijs Holleboom. and Stefan Lindskog.},
title={On the Relationship between Confidentiality Measures: Entropy and Guesswork},
booktitle={Proceedings of the 5th International Workshop on Security in Information Systems (ICEIS 2007) - WOSIS},
year={2007},
pages={135-144},
publisher={SciTePress},
organization={INSTICC},
doi={10.5220/0002426901350144},
isbn={978-972-8865-96-2},
}

TY - CONF

JO - Proceedings of the 5th International Workshop on Security in Information Systems (ICEIS 2007) - WOSIS
TI - On the Relationship between Confidentiality Measures: Entropy and Guesswork
SN - 978-972-8865-96-2
AU - Lundin, R.
AU - Holleboom, T.
AU - Lindskog, S.
PY - 2007
SP - 135
EP - 144
DO - 10.5220/0002426901350144
PB - SciTePress