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Journals and Conferences
We present a quantum algorithm for the computation of the irrational period lattice of a function on Zn which is periodic in a relaxed sense. This algorithm is applied to compute the unit group of… (More)
This article presents algorithms for computing discrete logarithms in class groups of quadratic number elds. In the case of imaginary quadratic elds, the algorithm is based on methods applied by… (More)
A new algorithm is given and analyzed for the computation of the Hermite basis of a large integer matrix whose HNF has small essential part. The algorithm improves the results from  by dropping… (More)
The tolerances and limitations in design and manufacturing of both motors and inverters lead to parasitic resistances in the phases. Therefore, the phase resistances are asymmetric, which causes an… (More)
The tolerances and limitations in design and manufacturing of both electrical motors and inverters lead to parasitic resistances in the phases. Therefore, the phase resistances are asymmetric, which… (More)
Cryptographic long-term security is needed, but difficult to achieve. Use flexible cryptographic tools, and have replacements ready.
We present a probabilistic algorithm for computing the regulator R of a real quadratic order of discriminant ∆ running in time L( 1 2 , 3/ √ 8 + o(1)).
The purpose of this thesis is to study the complexity of the discrete logarithm problem (DLP) and related problems in quadratic orders. The significance of these problems stems in large part from… (More)
This paper describes a demodulation approach based on the least squares method for a saliency based position estimation in slowly sampled field-oriented control systems. The proposed approach focuses… (More)
This paper gives an overview of the state of art in cryptography based on quadratic orders. It discusses the intractable problems in class groups and the infrastructure of quadratic orders,… (More)