Crypto Chats
Crypto Chats is an open forum to discuss new and classic research results in the area of cryptography. While this often has the style of a traditional reading group, we also offer the opportunity to give dry runs for (conference) presentations and to discuss ongoing research to gather informal feedback from fellow students and academics. Occasionally, we invite (international) guest speakers.
When and Where
During term time, we regularly meet on Tuesdays from 11-12 in the CDT room, followed by a joint lunch. Remote participation is possible via MS Teams. We also have a shared calendar that you can sync with your diary. Please contact Christian Weinert to join our mailing list CryptoChats@rhul.ac.uk.
Schedule
AY 2024/25
Term 1
| Date | Session Leader | Topic |
|---|---|---|
| 01.10.2024 | Danilo Francati | Breach Extraction Attacks: Exposing and Addressing the Leakage in Second Generation Compromised Credential Checking Services (IEEE S&P'24) |
| 08.10.2024 | Christian Weinert | Concretely Efficient PSU via Circuit-based PSI (ePrint 2024/1494) |
| 15.10.2024 | Simon Pohmann | On Algebraic Homomorphic Encryption and its Applications to Doubly-Efficient PIR (ePrint 2024/1307) |
| 22.10.2024 | Siaw-Lynn Ng | Functional Repair Codes from a Projective Geometry Perspective |
| 29.10.2024 | Sophie Hawkes | Cryptography and Collective Power (ePrint 2024/1602) |
| 19.11.2024 | Daisy Ding | Module-Lattice-Based Key-Encapsulation Mechanism Standard (FIPS 203) |
| 03.12.2024 | Mik Brough | Comparing the Usability of Cryptographic APIs (IEEE S&P'17) |
| 10.12.2024 | Vasyl Ustymenko | On Schubert Cells of Projective Geometry and Quadratic Public Keys of Multivariate Cryptography (ePrint 2024/1480) |
AY 2023/24
Term 3
| Date | Session Leader | Topic |
|---|---|---|
| 30.04.2024 | Erin Hales | *That* attack on LWE paper (ePrint 2024/555) |
| 14.05.2024 | Sophie Hawkes | Fuzzy Private Set Intersection with Large Hyperballs (EUROCRYPT'24) |
| 21.05.2024 | Tabitha Ogilvie | Hintless Single-Server Private Information Retrieval (ePrint 2023/1733) |
| 11.06.2024 | Jintai Ding | TUOV, a new multivariate signature |
Term 2
| Date | Session Leader | Topic |
|---|---|---|
| 16.01.2024 | Christian Weinert | AnonPSI: An Anonymity Assessment Framework for PSI (arXiv) |
| 23.01.2024 | Erin Hales | Designs for Practical SHE Schemes based on Ring-LWR |
| 06.02.2024 | Rachel Player | Memory Adds No Cost to Lattice Sieving for Computers in 3 or More Spatial Dimensions (ePrint 2024/080) |
| 13.02.2024 | Simon Pohmann | Revisiting the Slot-to-Coefficient Transformation for BGV and BFV (ePrint 2024/153) |
| 21.02.2024 | Gareth Davies | How Can Academic Research Impact Real-World Post-Quantum Cryptography |
| 27.02.2024 | Benjamin Bencina | Reductions From Module Lattices to Free Module Lattices, and Application to Dequantizing Module-LLL (CRYPTO'23) |
| 05.03.2024 | Sasha Lapiha | SLAP: Succinct Lattice-Based Polynomial Commitments from Standard Assumptions (ePrint 2023/1469) |
| 12.03.2024 | Vasyl Ustymenko | On Short Digital Signatures With Eulerian Transformations (ePrint 2024/001) |
| 19.03.2024 | Yiannis Tselekounis | Modular Design of Secure Group Messaging Protocols and the Security of MLS (CCS'21) |
Term 1
| Date | Session Leader | Topic |
|---|---|---|
| 26.09.2023 | Benjamin Bencina | Fully Adaptive Decentralized Multi-Authority ABE (EUROCRYPT'23) |
| 03.10.2023 | Christian Weinert | Practical Privacy-Preserving Authentication for SSH (USENIX Sec'22) |
| 10.10.2023 | Benjamin Bencina | On the Lattice Isomorphism Problem, Group Actions, and Computing Isometries |
| 17.10.2023 | Sasha Lapiha | Trapdoors for Lattices: Simpler, Tighter, Faster, Smaller (EUROCRYPT'12) |
| 24.10.2023 | Simon Pohmann | Towards Practical Doubly-Efficient Private Information Retrieval (FC'24) |
| 07.11.2023 | Daisy Ding | Tighter QCCA-Secure Key Encapsulation Mechanism with Explicit Rejection in the Quantum Random Oracle Model (CRYPTO'23) |
| 14.11.2023 | Rachel Player | Too Many Hints - When LLL Breaks LWE (ASIACRYPT'23) |
| 21.11.2023 | Yiannis Tselekounis | Optimal Single-Server Private Information Retrieval (EUROCRYPT'23) |
| 28.11.2023 | Sophie Hawkes | Outsourced PSI |
| 05.12.2023 | Vasyl Ustymenko | On Eulerian Semigroups of Multivariate Transformations and Their Cryptographic Applications (European Journal of Mathematics'23) |
AY 2022/23
Term 3
| Date | Session Leader | Topic |
|---|---|---|
| 02.05.2023 | Rachel Player | Does the Dual-Sieve Attack on Learning with Errors even Work? (ePrint 2023/302) |
| 09.05.2023 | Sean Murphy | Cryptanalysis of the Data Encryption Standard |
| 16.05.2023 | Sophie Hawkes | Authenticating AIS - Technical Version |
| 23.05.2023 | Erin Hales | Functional Commitments from Lattices |
| 30.05.2023 | Simon Pohmann | Doubly Efficient Private Information Retrieval and Fully Homomorphic RAM Computation from Ring LWE (STOC'23) |
| 06.06.2023 | Pascal Reisert | Overdrive LowGear 2.0: Reduced-Bandwidth MPC without Sacrifice (ASIACCS'23) |
| 13.06.2023 | Shubham Pawar | Computational Limitations in Robust Classification and Win-Win Results (COLT'19) |
Term 2
| Date | Session Leader | Topic |
|---|---|---|
| 10.01.2023 | Saqib Kakvi | An Introduction to Provable Security and its Affect on Parameter Choices (SSR'20) |
| 17.01.2023 | Simon Pohmann | Homomorphic Lower Digits Removal and Improved FHE Bootstrapping (EUROCRYPT'18 |
| 24.01.2023 | Crypto Group | Introduction Round |
| 31.01.2023 | Elizabeth Quaglia | Coercion Resistance in Electronic Voting (USENIX Sec'20) |
| 07.02.2023 | Erin Hales | Intro to CKKS, building to discussion of security notions for FHE (CRYPTO'22) |
| 14.02.2023 | Olivier Blazy | An Introduction to Smooth Projective Hash Functions (Habilitation) |
| 21.02.2023 | Xavier Bultel | Generic Zero-Knowledge Proofs on Ciphertexts |
| 28.02.2023 | Christian Weinert | The Apple PSI System (Whitepaper) |
| 14.03.2023 | Crypto Group | News Session |
| 21.03.2023 | Vasyl Ustymenko | Geometries and Multivariate Cryptosystems (ePrint 2023/175) |