Research Interests
My research focuses on lattice-based cryptography and the development of privacy enhancing technologies for use in the post-quantum era. At present I work on zero-knowledge protocols from lattices and their applications to e-voting, distributed key generation, and threshold cryptography.
I am currently based in the PACY Lab, Universität München, Germany where I work on multi-party computation protocols and privacy preserving designs more generally
Publications
Note: Authors listed alphabetically and omitting my name. If no author given, paper is solo authored by me.
Olingo: Threshold Latice Signatures with DKG and Identifiable Abort. Kamil Gur, Johnathan Katz, Caroline Sandsbråten, Tjerand Silde, 2025 (ePrint 2025, Submitted to USENIX)
More Efficient Post-Quantum Electronic Voting from NTRU. Caroline Sandsbråten, and Tjerand Silde, (CIC Journal 2024)
Collaborative, Segregated NIZK (CoSNIZK) and More Efficient Lattice-Based Direct Anonymous Attestation. Liqun Chen, Nada El Kassem, (ePrint 2023)
More Efficient, Provably-Secure Direct Anonymous Attestation from Lattices. Nada El Kassem, Liqun Chen, Rachid El Bansarkhani, Ali El Kaafarani, Jan Camenisch, Paulo Martins, Leonel Sousa (Future Gen. Comp, Systems, 2019)
L-DAA: Lattice-Based Direct Anonymous Attestation. Nada El Kassem, Liqun Chen, Rachid El Bansarkhani, Ali El Kaafarani, Jan Camenisch, Paulo Martins, Leonel Sousa, 2018.
A lower bound for biases amongst products of two primes. (Research in Number Theory, 2017)
Education
DPhil Mathematics, Oxford, 'Post-quantum cryptography'. Supervisors:Prof. Liqun Che, Dr. Shuichi Katsumata, Dr. Ali Kaafarani, 2017-2024.
MSc Mathematics, Royal Holloway University of London, 'Mathematics for communications and cryptography', 2016-17.
MSci Mathematics, University College London (UCL), 2012-2016.