Research

The paper "Efficient Key Recovery for all HFE Signature Variants" received the Best Paper Award at CRYPTO 2021. This is a joint work of Albrecht Petzoldt with Chengdong Tao and Jintai Ding.

The paper “Subtractive Sets over Cyclotomic Rings: Limits of Schnorr-like Arguments over Lattices” has been accepted to CRYPTO 2021. This is a joint work of Russell W. F. Lai with Martin R. Albrecht. Below you will find the abstract of the paper. We study when (dual) Vandermonde systems of the...

The paper "On Multi-Channel Huffman Codes for Asymmetric-Alphabet Channels" has been accepted to the 2021 IEEE International Symposium on Information Theory. This is a joint work of Russell W. F. Lai with Hoover H. F. Yin, Xishi Wang, Ka Hei Ng, Lucien K. L. Ng, and Jack P. K. Ma. Below you will ...

The paper „Foundations of Ring Sampling“ by Viktoria Ronge, Christoph Egger, Russell W. F. Lai, Dominique Schröder and Hoover H. F. Yin has been accepted at Privacy Enhancing Technologies Symposium 2021 (Issue 3). Below you will find the abstract of the paper. A ring signature scheme allows th...

The paper „Reparo: Publicly Verifiable Layer to Repair Blockchains“ by Sri Aravinda Krishnan Thyagarajan, Adithya Bhat, Bernardo Magri, Daniel Tschudi and Aniket Kate has been accepted at Financial Cryptography and Data Security 2021. Below you will find the abstract of the paper. Although blo...

The paper "Lockable Signatures for Blockchains: Scriptless Scripts for All Signatures" by Sri Aravinda Krishnan Thyagarajan and Giulio Malavolta has been accepted at IEEE Symposium on Security and Privacy 2021. Below you will find the abstract of the paper. Payment Channel Networks (PCNs) have...

The Chair of Applied Cryptography became a new member of the Embedded Systems Institute.

Thepaper „On Computational Shortcuts for Information-Theoretic PIR“ by Matthew Man-Hou Hong, Yuval Ishai, Victor I. Kolobov and Russell W. F. Lai has been accepted at TCC 2020. Below you will find the abstract of the paper. Information-theoretic private information retrieval (PIR) schemes have...

The paper „Multi-Client Oblivious RAM with Poly-Logarithmic Communication“ by Sherman S. M. Chow, Katharina Fech, Russell W. F. Lai and Giulio Malavolta has been accepted at Asiacrypt 2020. Below you will find the abstract of the paper. Oblivious RAM enables oblivious access to memory in the s...

The funding for the project "Password-hardened Encryption" has been accepted by German Research Foundation.