Abstract
Cryptographic applications, such as hashing, block ciphers and stream ciphers, make use of functions which are simple by some criteria (such as circuit implementations), yet hard to invert almost everywhere. A necessary condition for the latter property is to be "sufficiently distant" from linear, and cryptographers have proposed several measures for this distance. In this paper, we show that four common measures, nonlinearity, algebraic degree, annihilator immunity, and multiplicative complexity, are incomparable in the sense that for each pair of measures, μ 1, μ 2, there exist functions f 1, f 2 with μ 1 (f 1) > μ 1 (f 2) but μ 2(f 1) < μ 2(f 2). We also present new connections between two of these measures. Additionally, we give a lower bound on the multiplicative complexity of collision-free functions.
Originalsprog | Engelsk |
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Titel | Algorithms and Complexity - 8th International Conference, CIAC 2013, Proceedings : 8th International Conference, CIAC 2013 |
Redaktører | Paul G. Spirakis, Maria Serna |
Antal sider | 12 |
Forlag | Springer |
Publikationsdato | 2013 |
Sider | 61-72 |
ISBN (Trykt) | 978-3642382321 |
DOI | |
Status | Udgivet - 2013 |
Begivenhed | International Conference on Algorithms and Complexity - Barcelona, Spanien Varighed: 22. maj 2013 → 24. maj 2013 Konferencens nummer: 8 |
Konference
Konference | International Conference on Algorithms and Complexity |
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Nummer | 8 |
Land/Område | Spanien |
By | Barcelona |
Periode | 22/05/2013 → 24/05/2013 |
Navn | Lecture Notes in Computer Science |
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Vol/bind | 7878 |
ISSN | 0302-9743 |
Emneord
- Boolean functions
- nonlinearity
- multiplicative complexity
- algebraic degree
- annihilator immunity
- cryptology