Rasoul Akhavan Mahdavi

My name is Rasoul. I am a Ph.D. student under the supervision of Florian Kerschbaum. I'm also a member of the Cryptography, Security, and Privacy (CrySP) lab at the University of Waterloo .

I hold a Masters degree in Computer Science from the University of Waterloo and a Bachelor of Science in Computer Engineering from Sharif University of Technology.

Email / Google Scholar / Twitter / Github

Research

My work is primarily on methods to apply secure computation more efficiently. I focus specifically on Homomorphic Encryption and Secure Multi-party Computation. I have also worked on projects on Private-set intersection, and Differential Privacy.

Preprints

HE is all you need: Compressing FHE Ciphertexts using Additive HE
Rasoul Akhavan Mahdavi, Abdulrahman Diaa, Florian Kerschbaum

arXiv

Publications

Level Up: Private Non-Interactive Decision Tree Evaluation using Levelled Homomorphic Encryption
Rasoul Akhavan Mahdavi, Haoyan Ni, Dimitry Linkov, Florian Kerschbaum
30th ACM Conference on Computer and Communications Security, ACM CCS 2023
arXiv / code

Faster Secure Comparisons with Offline Phase for Efficient Private Set Intersection
Florian Kerschbaum, Erik-Oliver Blass, Rasoul Akhavan Mahdavi
Network and Distributed System Security Symposium, NDSS 2023
arXiv / code

Selective MPC: Distributed Computation of Differentially Private Key Value Statistics
Thomas Humphries, Rasoul Akhavan Mahdavi, Shannon Veitch, Florian Kerschbaum
29th ACM Conference on Computer and Communications Security, ACM CCS 2022
arXiv / code

Constant-weight PIR: Single-round Keyword PIR via Constant-weight Equality Operators
Rasoul Akhavan Mahdavi, Florian Kerschbaum
31st USENIX Security Symposium, 2022, Boston, USA
paper / code

Practical Over-Threshold Multi-Party Private Set Intersection
Rasoul Akhavan Mahdavi, Thomas Humphries, Bailey Kacsmar, Simeon Krastnikov, Nils Lukas, John A. Premkumar, Masoumeh Shafieinejad, Simon Oya, Florian Kerschbaum, Erik-Oliver Blass
36th Annual Computer Security Applications Conference, 2020, Online
paper / code

Posters

Faster Evaluation of AES using TFHE
Roy Stracovsky, Rasoul Akhavan Mahdavi, Florian Kerschbaum
First annual FHE.org conference, affiliated with Eurocrypt 2022, Trondheim, Norway
poster

Constant-weight PIR
Rasoul Akhavan Mahdavi, Florian Kerschbaum
2022 Cybersecurity and Privacy Institute Annual Conference, Waterloo, Canada
poster / link to event