* Dates within the next 7 days are marked by a star.
Lauri Nyman
Distance to singularity for matrix pencils via Riemannian optimization
* Today * Thursday 25 April 2024, 09:15, M2 (M233)
Lauri Nyman
Distance to singularity for matrix pencils via Riemannian optimization
* Today * Thursday 25 April 2024, 09:15, M2 (M233)
Joonas Laaksonen
MSc thesis presentation
* Monday 29 April 2024, 14:15, M3 (M234)
Diplomityöesitelmä
Diplomityöesitelmä / Hakula
Oula Kekäläinen
MSc thesis presentation
* Monday 29 April 2024, 16:15, M3 (M234)
Algebra and discrete mathematics seminar
Rodrigo Martín Sánchez-Ledesma (Complutense U. Madrid / INDRA)
Overview and extension of root-based attacks against PLWE instances
Tuesday 07 May 2024, 15:15, M2 (M233)
The Polynomial Learning With Errors problem (PLWE) serves as the background of two of the four cryptosystems standardised in July 2022 by the National Institute of Standards and Technology to replace non-quantum resistant current primitives like those based on RSA, finite field based Diffie-Hellman and its elliptic curve analogue. Although PLWE is highly believed to be quantum resistant, unlike other post-quantum proposals like multivariate and some code based ones, this fact has not yet been established. Moreover, several vulnerabilities have been encountered for a number of specific instances. In a search for more flexibility, it becomes fully relevant to study the robustness of PLWE based on other polynomials, not necessarily cyclotomic. In 2015, Lauter et al. found a good number of attacks based on different features of the roots of the polynomial. In the present talk we present an overview of the approximations made against PLWE derived from these work, along with several new attacks which refine those by Lauter exploiting the order of the trace of roots over finite extensions of the finite field under the three scenarios laid out by Lauter et al, allowing to generalize the setting in which the attacks can be carried out. This is joint work with I. Blanco-Chacón and R. Durán.
ANTA Seminar / Hollanti et al.
Dr. Benjamin Jany (TU Eindhoven)
TBA
Monday 13 May 2024, 14:15, M2 (M233)
ANTA Seminar / Hollanti et al.
Lilja Metsälampi
Midterm review
Monday 13 May 2024, 16:15, M3 (M234)
Algebra and discrete mathematics seminar
Lauri Särkiö
TBA/Midterm review
Wednesday 15 May 2024, 11:15, M3 (M234)
Kai Hippi
TBA
Wednesday 15 May 2024, 14:15, M3 (M234)
Seminar on analysis and geometry
Sari Rogovin
Linear dilatation and absolute continuity
Thursday 16 May 2024, 10:15, M3 (M234)
Seminar on analysis and geometry
Patricija Sapokaitė
Midterm review
Monday 27 May 2024, 11:15, M3 (M234)
Algebra and discrete mathematics seminar
Stephen Moore (IMPAN)
TBA
Tuesday 28 May 2024, 10:15, M3 (M234)
Prof. Sueli I. R. Costa (Unicamp, Brazil)
TBA
Monday 03 June 2024, 13:15, M2 (M233)
ANTA Seminar / Hollanti et al.
Okko Makkonen
Midterm review: TBA
Thursday 13 June 2024, 11:15, M3 (M234)
ANTA Seminar / Hollanti et al.
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