### Dr. Violetta Weger

Technical University of Munich

Associate Professorship of Coding and Cryptography (Prof. Wachter-Zeh)

###### Postal address

Postal:

Theresienstr. 90

80333 München

## About

I am currently a postdoctoral researcher at the Technical University of Munich in the group of Professor Antonia Wachter-Zeh. I completed my Ph.D. in Mathematics under the supervision of Professor Joachim Rosenthal at the University of Zurich. My research interests include cryptography, algebraic coding theory and number theory.

## Publications

#### Journal Papers

- Giacomo Micheli, Severin Schraven, Violetta Weger.
*Local to global principle for expected values.*Journal of Number Theory, 2021. Video Abstract | (and the Bloopers) - Gianira Alfarano, Karan Khathuria, Violetta Weger.
*On single server private information retrieval in a coding theory perspective.*Applicable Algebra in Engineering, Communication and Computing, 2021. - Karan Khathuria, Joachim Rosenthal, Violetta Weger.
*Encryption scheme based on expanded Reed-Solomon codes.*Advances in Mathematics of Communications, Volume 15, Issue 2, pp 207-218, 2020. - Anna-Lena Horlemann-Trautmann, Violetta Weger.
*Information set decoding in the Lee metric with applications to cryptography.*Advances in Mathematics of Communications, Volume 15, Nr 4, pp 677-699, 2021. - Carmelo Interlando, Karan Khathuria, Nicole Rohrer, Joachim Rosenthal, Violetta Weger.
*Generalization of the ball-collision algorithm.*Journal of Algebra Combinatorics Discrete Structures and Applications, Volume 7, Issue 2, pp 195-207, 2020. - Karan Khathuria, Giacomo Micheli, Violetta Weger.
*On the algebraic structure of E_p^(m) and applications to cryptography.*Applicable Algebra in Engineering, Communication and Computing, 2019. - Giacomo Micheli, Violetta Weger.
*On rectangular unimodular matrices over the algebraic integers.*SIAM Journal on Discrete Mathematics, Volume 33, Issue 1, pp 425-437, 2019. - Giacomo Micheli, Violetta Weger.
*Cryptanalysis of the CLR Cryptosystem.*Designs, Codes and Cryptography, Volume 87, Issue 5, pp 1069–1086, 2019.

#### Conference Proceedings

- Karan Khathuria, Joachim Rosenthal, Violetta Weger.
*Weight Two Masking of the Reed-Solomon Structure in Conjunction with List Decoding.*Proceedings of MTNS2018, 2018.

#### Preprints

- Eimear Byrne, Anna-Lena Horlemann, Karan Khathuria, Violetta Weger.
*Density of Free Modules over Finite Chain Rings.*2021 (Submitted) arXiv - Niklas Gassner, Marcus Greferath, Joachim Rosenthal, Violetta Weger.
*On Bounds for Ring-Based Coding Theory.*2021 (Submitted) arXiv - Marco Baldi, Massimo Battaglioni, Franco Chiaraluce, Anna-Lena Horlemann-Trautmann, Edoardo Persichetti, Paolo Santini, Violetta Weger.
*A New Path to Code-based Signatures via Identification Schemes with Restricted Errors.*2020 (Submitted) arXiv - Violetta Weger, Karan Khathuria, Anna-Lena Horlemann, Massimo Battaglioni, Paolo Santini, Edoardo Persichetti.
*On the Hardness of the Lee Syndrome Decoding Problem.*2020 (Submitted) arXiv

#### Thesis

- Ph.D. Thesis. Information Set Decoding in the Lee Metric and the Local to Global Principle for Densities. 2020.
- Master Thesis. A Code-Based Cryptosystem using GRS codes. 2017.

## Talks

*On the density of free codes over finite chain rings.*SIAM AG21, August 17, 2021, virtual. Slides*On the hardness of the Lee syndrome decoding problem.*CBCrypto 2021, June 22, 2021, virtual. Slides*The Local-to-Global Principle for Densities.*UCD Algebra and Number Theory Seminar, April 15, 2021, virtual. Slides*Information set decoding in the Lee metric.*CBCrypto 2020, May 9, 2020, virtual. Slides, Video*Generalization of the ball-collision algorithm.*July 18, 2019, Munich, DE. Slides*Generalization of the ball-collision algorithm.*SIAM Conference on Applied Algebraic Geometry, July 9, 2019, Bern, CH. Slides*Generalization of the ball-collision algorithm.*Code-Based Cryptography Workshop, May 19, 2019, Darmstadt, DE. Slides*What is... the McEliece system?*Zurich Graduate Colloquium, November 20, 2018, Zurich, CH. Slides*On the density of rectangular unimodular matrices over the ring of algebraic integers*Arbeitsgemeinschaft in Codierungstheorie und Kryptographie, June 6, 2018, Neuchatel, CH. Slides*On the density of rectangular unimodular matrices over the ring of algebraic integers*Number theory and coding theory: Contemporary applications in security, May 31, 2018, Turku, FI. Slides*Weight Two Masking in the McEliece Public Key System*SIAM Conference on Applied Algebraic Geometry, August 3, 2017, Atlanta, US. Slides*Weight Two Masking in the McEliece System*Fq13, June 5, 2017, Gaeta, IT. Slides*A Code-Based Cryptosystem using GRS Codes*Arbeitsgemeinschaft in Codierungstheorie und Kryptographie, December 07, 2016, Zurich, CH. Slides