International Association for Cryptologic Research

International Association
for Cryptologic Research

CryptoDB

Vladislav Kovtun

Affiliation: Senior researcher in Information Security, Research Laboratory of Information Se

Publications

Year
Venue
Title
2008
EPRINT
Fast explicit formulae for genus 2 hyperelliptic curves using projective coordinates (Updated)
Vladislav Kovtun Thomas Wollinger
This contribution proposes a modification of method of divisors group operation in the Jacobian of hyperelliptic curve over even and odd characteristic fields in projective coordinate. The hyperelliptic curve cryptosystem (HECC), enhances cryptographic security efficiency in e.g. information and telecommunications systems.
2008
EPRINT
Software Implementation of Genus-2 Hyperelliptic Curve Cryptosystems Over Prime Fields
Vladislav Kovtun Jan Pelzl Alexandr Kuznetsov
This paper describes the system parameters and software implementation of a HECDSA cryptosystem based on genus-2 hyperelliptic curves over prime fields. We show how to reduce the computational complexity for special cases and compare the given cryptosystem with the well-known ECDSA cryptosystem based on elliptic curves.
2008
EPRINT
THE DESIGN OF BOOLEAN FUNCTIONS BY MODIFIED HILL CLIMBING METHOD
With cryptographic investigations, the design of Boolean functions is a wide area. The Boolean functions play important role in the construction of a symmetric cryptosystem. In this paper the modifed hill climbing method is considered. The method allows using hill climbing techniques to modify bent functions used to design balanced, highly nonlinear Boolean functions with high algebraic degree and low autocorrelation. The experimental results of constructing the cryptographically strong Boolean functions are presented.