1 citations · 1 across the 2 of their papers we have counts for
12 papers
A multistep strategy for polynomial system solving over finite fields and a new algebraic attack on the stream cipher Trivium
Roberto La Scala, Federico Pintore, Sharwan K. Tiwari +1
In this paper we introduce a multistep generalization of the guess-and-determine or hybrid strategy for solving a system of multivariate polynomial equations over a finite field. I…
An algebraic attack to the Bluetooth stream cipher E0
Roberto La Scala, Sergio Polese, Sharwan K. Tiwari +1
In this paper we study the security of the Bluetooth stream cipher E0 from the viewpoint it is a "difference stream cipher", that is, it is defined by a system of explicit differen…
Stream/block ciphers, difference equations and algebraic attacks
Roberto La Scala, Sharwan K. Tiwari
In this paper we model a class of stream and block ciphers as systems of (ordinary) explicit difference equations over a finite field. We call this class "difference ciphers" and w…
Multigraded Hilbert Series of noncommutative modules
Roberto La Scala, Sharwan K. Tiwari
In this paper, we propose methods for computing the Hilbert series of multigraded right modules over the free associative algebra. In particular, we compute such series for noncomm…
Computing minimal free resolutions of right modules over noncommutative algebras
Roberto La Scala
In this paper we propose a general method for computing a minimal free right resolution of a finitely presented graded right module over a finitely presented graded noncommutative…
Monomial right ideals and the Hilbert series of noncommutative modules
Roberto La Scala
In this paper we present a procedure for computing the rational sum of the Hilbert series of a finitely generated monomial right module over the free associative algebra $K\lan…