In [11], the definitions of forward difference, backward difference, and central difference as difference operations for functions on R were formalized. However, the definitions of forward difference, backward difference, and central difference for functions on vector spaces over F have not been formalized. In cryptology, these definitions are very important in evaluating the security of cryptographic systems [3], [10]. Differential cryptanalysis [4] that undertakes a general purpose attack against block ciphers [13] can be formalized using these definitions. In this article, we formalize the definitions of forward difference, backward difference, and central difference for functions on vector spaces over F. Moreover, we formalize some facts about these definitions.
@article{bwmeta1.element.doi-10_2478_forma-2014-0027,
author = {Kenichi Arai and Ken Wakabayashi and Hiroyuki Okazaki},
title = {Difference of Function on Vector Space over F},
journal = {Formalized Mathematics},
volume = {22},
year = {2014},
pages = {269-275},
zbl = {1311.39025},
language = {en},
url = {http://dml.mathdoc.fr/item/bwmeta1.element.doi-10_2478_forma-2014-0027}
}
Kenichi Arai; Ken Wakabayashi; Hiroyuki Okazaki. Difference of Function on Vector Space over F. Formalized Mathematics, Tome 22 (2014) pp. 269-275. http://gdmltest.u-ga.fr/item/bwmeta1.element.doi-10_2478_forma-2014-0027/
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