DCC
2008
IEEE
14 years 11 months ago
2008
IEEE
In this article we present some weaknesses in the RC4 cipher and their cryptographic applications. Especially we improve the attack described in [2] in such a way, that it will wo...
DCC
2008
IEEE
14 years 11 months ago
2008
IEEE
Skew Hadamard designs (4n-1, 2n-1, n-1) are associated to order 4n skew Hadamard matrices in the natural way. We study the codes spanned by their incidence matrices A and by I +A a...
DCC
2008
IEEE
14 years 11 months ago
2008
IEEE
The name `graph state' is used to describe a certain class of pure quantum state which models a physical structure on which one can perform measurement-based quantum computin...
DCC
2008
IEEE
14 years 11 months ago
2008
IEEE
We study the Tardos' probabilistic fingerprinting scheme and show that its codeword length may be shortened by a factor of approximately 4. We achieve this by retracing Tardo...
DCC
2008
IEEE
14 years 11 months ago
2008
IEEE
Let Vn(q) denote a vector space of dimension n over the field with q elements. A set P of subspaces of Vn(q) is a partition of Vn(q) if every nonzero vector in Vn(q) is contained ...
DCC
2008
IEEE
14 years 11 months ago
2008
IEEE
DCC
2008
IEEE
14 years 11 months ago
2008
IEEE
Some improved bounds on the number of directions not determined by a point set in the affine space AG(k, q) are presented. More precisely, if there are more than pe (q -1) directio...
DCC
2008
IEEE
14 years 11 months ago
2008
IEEE
We present two families of constacyclic linear codes with large automorphism groups. The codes are obtained from the twisted tensor product construction. AMS subject classificatio...
DCC
2008
IEEE
14 years 11 months ago
2008
IEEE
We present improved lower bounds on the sizes of small maximal partial ovoids in the classical hermitian polar spaces, and improved upper bounds on the sizes of large maximal part...
DCC
2008
IEEE
14 years 11 months ago
2008
IEEE
Complete (n, r)-arcs in PG(k - 1, q) and projective (n, k, n - r)q-codes that admit no projective extensions are equivalent objects. We show that projective codes of reasonable le...