James Bell-Clark

According to our database, James Bell-Clark authored at least 18 papers between 2019 and 2025.

Collaborative distances:

• Dijkstra number of four.
• Erdős number of three.

2025

Vεrity: Verifiable Local Differential Privacy.

James Bell-Clark, Adrià Gascón, Baiyu Li, Mariana Raykova, Amrita Roy Chowdhury

IACR Cryptol. ePrint Arch., 2025

Hash-Prune-Invert: Improved Differentially Private Heavy-Hitter Detection in the Two-Server Model.

Borja Balle, James Bell-Clark, Albert Cheu, Adrià Gascón, Jonathan Katz, Mariana Raykova, Phillipp Schoppmann, Thomas Steinke

Proceedings of the IEEE Symposium on Security and Privacy, 2025

Willow: Secure Aggregation with One-Shot Clients.

James Bell-Clark, Adrià Gascón, Baiyu Li, Mariana Raykova, Phillipp Schoppmann

Proceedings of the Advances in Cryptology - CRYPTO 2025, 2025

2024

Secure Stateful Aggregation: A Practical Protocol with Applications in Differentially-Private Federated Learning.

Marshall Ball, James Bell-Clark, Adrià Gascón, Peter Kairouz, Sewoong Oh, Zhiye Xie

IACR Cryptol. ePrint Arch., 2024

2023

ACORN: Input Validation for Secure Aggregation.

James Bell, Adrià Gascón, Tancrède Lepoint, Baiyu Li, Sarah Meiklejohn, Mariana Raykova, Cathie Yun

Proceedings of the 32nd USENIX Security Symposium, 2023

Amplification by Shuffling without Shuffling.

Borja Balle, James Bell, Adrià Gascón

Proceedings of the 2023 ACM SIGSAC Conference on Computer and Communications Security, 2023

2022

Distributed, Private, Sparse Histograms in the Two-Server Model.

James Bell, Adrià Gascón, Badih Ghazi, Ravi Kumar, Pasin Manurangsi, Mariana Raykova, Phillipp Schoppmann

Proceedings of the 2022 ACM SIGSAC Conference on Computer and Communications Security, 2022

2021

Reinforcement Learning in Newcomblike Environments.

James Bell, Linda Linsefors, Caspar Oesterheld, Joar Skalse

Proceedings of the Advances in Neural Information Processing Systems 34: Annual Conference on Neural Information Processing Systems 2021, 2021

MPC-Friendly Commitments for Publicly Verifiable Covert Security.

Nitin Agrawal, James Bell, Adrià Gascón, Matt J. Kusner

Proceedings of the CCS '21: 2021 ACM SIGSAC Conference on Computer and Communications Security, Virtual Event, Republic of Korea, November 15, 2021

2020

Differentially Private Health Tokens for Estimating COVID-19 Risk.

David Butler, Chris Hicks, James Bell, Carsten Maple, Jon Crowcroft

CoRR, 2020

TraceSecure: Towards Privacy Preserving Contact Tracing.

James Bell, David Butler, Chris Hicks, Jon Crowcroft

CoRR, 2020

Reconstructing Genotypes in Private Genomic Databases from Genetic Risk Scores.

Brooks Paige, James Bell, Aurélien Bellet, Adrià Gascón, Daphne Ezer

Proceedings of the Research in Computational Molecular Biology, 2020

Secure Single-Server Aggregation with (Poly)Logarithmic Overhead.

James Henry Bell, Kallista A. Bonawitz, Adrià Gascón, Tancrède Lepoint, Mariana Raykova

Proceedings of the CCS '20: 2020 ACM SIGSAC Conference on Computer and Communications Security, 2020

Private Summation in the Multi-Message Shuffle Model.

Borja Balle, James Bell, Adrià Gascón, Kobbi Nissim

Proceedings of the CCS '20: 2020 ACM SIGSAC Conference on Computer and Communications Security, 2020

Private Protocols for U-Statistics in the Local Model and Beyond.

James Bell, Aurélien Bellet, Adrià Gascón, Tejas Kulkarni

Proceedings of the 23rd International Conference on Artificial Intelligence and Statistics, 2020

2019

Improved Summation from Shuffling.

Borja Balle, James Bell, Adrià Gascón, Kobbi Nissim

CoRR, 2019

Differentially Private Summation with Multi-Message Shuffling.

Borja Balle, James Bell, Adrià Gascón, Kobbi Nissim

CoRR, 2019

The Privacy Blanket of the Shuffle Model.

Borja Balle, James Bell, Adrià Gascón, Kobbi Nissim

Proceedings of the Advances in Cryptology - CRYPTO 2019, 2019