The conference will take place entirely online. All times below are "PDT".

The conference is organised in 9 sessions, each composed of two parts: video streaming and live discussion including Q&A with paper authors and special invited guests.

Session 1 - Applied MPC

Monday, 5/17 - 9:50 AM - 10:30 AM and 10:35 AM - 11:15 AM

Chair: Charalampos Papamanthou

Secure Fast Evaluation of Iterative Methods: With an Application to Secure PageRank

Daniele Cozzo; Nigel P. Smart; Younes Talibi Alaoui

KU Leuven

Compilation of Function Representations for Secure Computing Paradigms

Karim Baghery; Cyprien Delpech de Saint Guilhem; Emmanuela Orsini; Nigel Smart; Titouan Tanguy

KU Leuven

Oblivious TLS via Multi-Party Computation

Damiano Abram; Ivan Damgård; Peter Scholl; Sven Trieflinger

Aarhus University; Aarhus University; Aarhus University; Robert Bosch GmbH

Q&A with the authors + roundtable discussion with Yehuda Lindell (Unbound) and Moti Yung (Google).

Session 2 - Cryptanalysis I

Monday, 5/17 - 11:20AM - 12:00 PM and 12:05 PM - 12:45 PM

Chair: Helena Handschuh

Noisy Simon Period Finding

Lars Schlieper; Alexander May; Jonathan Schwinger

Ruhr University Bochum

A Bunch of Broken Schemes: A Simple yet Powerful Linear Approach to Analyzing Security of Attribute-Based Encryption

Marloes Venema; Greg Alpár,

Radboud University; Open University of the Netherlands and Radboud University

Zero-Correlation Linear Cryptanalysis with Equal Treatment for Plaintexts and Tweakeys

Chao Niu; Muzhou Li; Siwei Sun; Meiqin Wang

School of Cyber Science and Technology, Shandong University, Qingdao, China; Key Laboratory of Cryptologic Technology and Information Security, Ministry of Education, Shandong University, Qingdao, China; School of Cyber Science and Technology, Shandong University, Qingdao, China; Key Laboratory of Cryptologic Technology and Information Security, Ministry of Education, Shandong University, Qingdao, China; State Key Laboratory of Information Security, Institute of Information Engineering, Chinese Academy of Sciences, China;University of Chinese Academy of Sciences, China; School of Cyber Science and Technology, Shandong University, Qingdao, China; Key Laboratory of Cryptologic Technology and Information Security, Ministry of Education, Shandong University, Qingdao, China

Q&A with the authors

Session 3 - Authentication and Key Exchange

Tuesday, 5/18 - 9:20 AM - 10:00 AM and 10:05 AM - 10:45 AM

Chair: Nigel Smart

SoK: Game-based Security Models for Group Key Exchange

Bertram Poettering; Paul Rösler; Jürg Schwenk; Douglas Stebila

IBM Research Zurich; TU Darmstadt; Ruhr University Bochum; University of Waterloo

EPID with Malicious Revocation

Olivier Sanders; Jacques Traoré,

Orange Labs

Signed Diffie-Hellman Key Exchange with Tight Security

Jiaxin Pan; Chen Qian; Magnus Ringerud

Norwegian University of Science and Technology

Q&A with the authors

Session 4 - Shuffling and Friends

Tuesday, 5/18 - 10:50 AM - 11:30 AM and 11:35am AM - 12:15 PM

Chair: Steven Galbraith

Lattice-Based Proof of Shuffle and Applications to Electronic Voting

Diego F. Aranha; Carsten Baum; Kristian Gjösteen; Tjerand Silde; Thor Tunge

Aarhus University; Aarhus University; Norwegian University of Science and Technology; Norwegian University of Science and Technology; Norwegian University of Science and Technology

More Efficient Shuffle Argument from Unique Factorization

Toomas Krips; Helger Lipmaa

University of Tartu; Simula UiB

Cryptanalysis of a Dynamic Universal Accumulator over Bilinear Groups

Alex Biryukov; Aleksei Udovenko; Giuseppe Vitto

DCS and SnT, University of Luxembourg; CryptoExperts, Paris; SnT, University of Luxembourg

Q&A with the authors

Session 5 - Symmetric Design

Wednesday, 5/19 - 9:20 AM - 10:00 AM and 10:05 AM - 10:45 AM

Chair: Martijn Stam

FAN: A Lightweight Authenticated Cryptographic Algorithm

Lin Jiao; Dengguo Feng; Yonglin Hao; Xinxin Gong; Shaoyu Du

State Key Laboratory of Cryptology, Beijing

Related-Key Analysis of Generalized Feistel Networks with Expanding Round Functions

Yuqing Zhao; Wenqi Yu; Chun Guo

School of Cyber Science and Technology, Shandong University, Qingdao, Shandong, China

The Key-Dependent Message Security of Key-Alternating Feistel Ciphers

Pooya Farshim; Louiza Khati; Yannick Seurin; Damien Vergnaud

University of York; ANSSI; ANSSI; Sorbonne Université

Q& with the authors + roundtable discussion with Meltem Sonmez Turan (NIST).

Session 6 - Cryptanalysis II

Wednesday, 5/19 - 10:50 AM - 11:30 AM and 11:35 AM - 12:15 PM

Chair: Kenny Paterson

Mesh Messaging in Large-scale Protests: Breaking Bridgefy

Martin R. Albrecht; Jorge Blasco; Rikke Bjerg Jensen; Lenka Mareková

Royal Holloway, University of London

Inverse-Sybil Attacks in Automated Contact Tracing

Benedikt Auerbach; Suvradip Chakraborty; Karen Klein; Guillermo Pascual-Perez; Krzysztof Pietrzak; Michael Walter; Michelle Yeo

IST Austria

On the Effectiveness of Time Travel to Inject COVID-19 Alerts

Vincenzo Iovino; Serge Vaudenay; Martin Vuagnoux

University of Salerno; EPFL; base23

Q&A with the authors + roundtable discussion with Carmela Troncoso (EPFL).

Session 7 - Post-Quantum

Wednesday, 5/19 - 12:45 PM - 1:25 PM and 1:30 PM - 2:10 PM

Chair: Craig Costello

SoK: How (not) to Design and Implement Post-Quantum Cryptography

James Howe; Thomas Prest; Daniel Apon

PQShield; PQShield; NIST

Dual lattice attacks for closest vector problems (with preprocessing)

Thijs Laarhoven; Michael Walter

Eindhoven University of Technology; Institute of Science and Technology Austria

On the Hardness of Module-LWE with Binary Secret

Katharina Boudgoust; Corentin Jeudy; Adeline Roux-Langlois; Weiqiang Wen

Univ Rennes, CNRS, IRISA

Q&A with the authors + roundtable discussion with Kenny Paterson (ETH Zurich).

Session 8 - Cryptography in Distributed Systems

Thursday, 5/20 - 9:00 - 9:40 AM and 9:45 AM - 10:25 AM

Chair: Olivier Blazy

Multi-Party Revocation in Sovrin: Performance through Distributed Trust

Lukas Helminger; Daniel Kales; Sebastian Ramacher; Roman Walch

Graz University of Technology and Know-Center GmbH; Graz University of Technology; AIT Austrian Institute of Technology; Graz University of Technology and Know-Center GmbH

Balancing Privacy and Accountability in Blockchain Identity Management

Ivan Damgård; Chaya Ganesh; Hamidreza Khoshakhlagh; Claudio Orlandi; Luisa Siniscalchi

Aarhus University; Indian Institute of Science, Bangalore; Aarhus University; Aarhus University; Aarhus University

Non-interactive half-aggregation of EdDSA and variants of Schnorr signatures

Konstantinos Chalkias; Francois Garillot; Yashvanth Kondi; Valeria Nikolaenko

Novi and Facebook; Novi and Facebook; Northeastern University; Novi and Faceboook

Q&A with the authors + roundtable discussion with Isis Agora Lovecruft.

Session 9 - Implementation

Thursday, 5/20 - 10:30 - 11:10 AM and 11:15 AM - 11:55 AM

Chair: Lejla Batina

A Framework to Optimize Implementations of Matrices

Da Lin; Zejun Xiang; Xiangyong Zeng; Shasha Zhang

Faculty of Mathematics and Statistics, Hubei Key Laboratory of Applied Mathematics, Hubei University

Improvements to RSA key generation and CRT on embedded devices

Mike Hamburg; Mike Tunstall; Qinglai Xiao

Rambus Inc

On The Cost of ASIC Hardware Crackers: A SHA-1 Case Study

Anupam Chattopadhyay; Mustafa Khairallah; Gaetan Leurent; Zakaria Najm; Thomas Peyrin; Vesselin Velichkov

Nanyang Technological University; Nanyang Technological University; Inria, Paris; Nanyang Technological University; Nanyang Technological University; The University of Edinburgh

Q&A with the authors.