Here are some recent papers
A bound for separating hash families
(with Marjan Bazrafshan)
(pf)
On Jacobsthal binary sequences
(with S. S. Magliveras, Wandi Wei )
(pf)
Public key cryptosystem MST3: cryptanalysis and realization
(with Pavol Svaba)
(pf)
On the security of a realization of cryptosystem MST3
(with S. S. Magliveras, Pavol Svaba, Pavol Zajac)
(ps | pdf)
Explicit constructions for perfect hash families
(with Sosina Martirosyan)
(ps | pdf)
Primitive sets of a lattice and a generalization of Euclidean Algorithm
(with S. S. Magliveras and Wandi Wei)
(ps | pdf)
On generation of random covers for finite groups
(with P. Svaba)
(ps | pdf)
A public key cryptosystem based on non-abelian finite groups
(with W. Lempken, S.S. Magliveras, Wandi Wei)
(ps | pdf)
Roux-type Constructions for Covering Arrays of Strengths Three and Four
(with Charles J. Colbourn, Sosina S. Martirosyan, Robert A. Walker II)
(ps | pdf)
On Minimal Logarithmic Signatures of Finite Groups
(with Wolfgang Lempken)
(ps | pdf)
On non-polynomial Latin squares
(with Otokar Grosek and Peter Horak)
(ps | pdf)
Cryptographic primitives based on groups of hidden order
(with Wandi Wei, Spyros Magliveras, Frederick Hoffman)
(ps | pdf)
On t-Covering Arrays(with Sosina Martirosyan)
(ps | pdf)
Signature Schemes Based on a Group of Hidden Order
(with Wandi Wei and S. S. Magliveras)
(ps | pdf)
New Constructions for IPP Codes (with Sosina Martirosyan)
(ps | pdf)
On a Class of Traceability Codes (with Sosina Martirosyan)
(ps | pdf)
A New Mode of Using All-Or-Nothing Transforms
(with V. Canda)
(ps | pdf)
Scalable Block Ciphers Based on Feistel-like
Structure (with V. Canda),
Tatra Mt. Math.Publ.
25 (2002), 39--66.
(ps | pdf)
New approaches to designing public key cryptosystems
using one-way functions and trap-doors in finite groups
(with S. Magliveras and D. Stinson),
J. Cryptology
15 (2002), 285--297.
(ps | pdf)
Symmetric Block Ciphers Based on Group Bases
(with V. Canda, T.Horvath and S. Magliveras),
Selected Areas in Cryptography, SAC'2000,
Ed. D. Stinson and S. Tavares,
LNCS, (2001) pp.98--105.
(ps | pdf)
Secure Frameproof Codes, Key Distribution Patterns,
Group Testing Algorithms and Related Structures
(mit D. Stinson and R. Wei),
Journal of Statistical Planning and Inference,
86 (2000), 595--617.
(ps | pdf)
Recursive Constructions for 3-Designs
and Resolvable 3-Designs
Journal of Statistical Planning and Inference,
95 (2001), 341--358.
(ps | pdf)
Construction of 3-Designs Using Parallelism
J. Geom. 67 (2000), 223--235.
(ps | pdf)