Seminar Advanced Topics in Cryptography

This course is listed

• in Aachen RWTHonline as Seminar Advanced Topics in Cryptography,
• in Bonn Basis as MA-INF 1209 - Seminar Advanced Topics in Cryptography.

Lecture

Michael Nüsken

Time & Place

Please, send an email if you are interested in this seminar AND come to the kick-off.

• Monday, 16⁰⁰-18⁰⁰, b-it 0.107 and digital seminar room.

Kick-off meeting: Monday, 13 April 2026, 16⁰⁰, b-it 0.107 and digital seminar room.

Contents

Research front at the cryptographic preprint service ePrint.

Each participiant suggests three papers from ePrint, one of which is chosen. You then present your chosen paper in a session together with necessary background and deliver a report.

Schedule

• Monday 2026-06-15 16¹⁵-18⁰⁰. Jan Hündlings.
  Master thesis presentation: Nonlinear operations in MPC.
  Slides (PDF).
• Monday 2026-06-29 16¹⁵-18⁰⁰. Franziska Rau.
  Template Attack on Classic McEliece.
  Slides (PDF).
  Literature:
  • Andrei Alexei, Marios Omar Choudary & Vlad-Florin Dragoi (2025). Key-Recovery Side-Channel Attack on the Berlekamp-Massey Decoding Algorithm in the Classic McEliece KEM. IACR Preprint 2025/2043.
• Monday 2026-07-06 16¹⁵-18⁰⁰. Luky Setyarini.
  tba.
  Slides (PDF).
  Literature:
  • Christian Bormann & Anja Lehmann (2026). SoK: Anonymous Credentials for Digital Identity Wallets. IACR Preprint 2026/330.
• Monday 2026-07-13 16¹⁵-18⁰⁰. Nijat Sadikhov.
  Verifying Signal’s Double Ratchet.
  Slides (PDF).
  Literature:
  • Vincent Cheval, Charlie Jacomme & Jessica Richards (2026). Automated formal analysis of Signal’s Double Ratchet: attacks, fixes and security proofs. IACR Preprint 2026/727.
• Monday 2026-07-20 16¹⁵-18⁰⁰. Maximilian Schüller.
  tba.
  Slides (PDF).
  Literature:
  • Qian Guo, Denis Nabokov & Thomas Johansson (2026).  Unlocking the True Potential of Decryption Failure Oracles: A Hybrid Adaptive-LDPC Attack on ML-KEM Using Imperfect Oracles IACR Preprint 2026/070.

Prerequisites

• Good knowledge of basic cryptography -including public key systems, modern security definitions and security reductions- and
• fast understanding of mathematical and computer science topics is required.

Allocation

2 SWS.

• Master in Media Informatics: Computer and Communication Technology. 4 ECTS credits.
  Students have to register this course in RWTHonline.
• Master in Computer Science at University of Bonn: MA-INF 1209. 4 CP.
  Students have to register this course in BASIS.