Abstract
We present a three-party sorting protocol secure against passive and active adversaries in the honest majority setting. The protocol can be easily combined with other secure protocols which work on shared data, and thus enable different data analysis tasks, such as private set intersection of shared data, deduplication, and the identification of heavy hitters. The new protocol computes a stable sort. It is based on radix sort and is asymptotically better than previous secure sorting protocols. It improves on previous radix sort protocols by not having to shuffle the entire length of the items after each comparison step. We implemented our sorting protocol with different optimizations and achieved concretely fast performance. For example, sorting one million items with 32-bit keys and 32-bit values takes less than 2 seconds with semi-honest security and about 3.5 seconds with malicious security. Finding the heavy hitters among hundreds of thousands of 256-bit values takes only a few seconds, compared to close to an hour in previous work.
| Original language | English |
|---|---|
| Title of host publication | CCS 2022 - Proceedings of the 2022 ACM SIGSAC Conference on Computer and Communications Security |
| Publisher | Association for Computing Machinery |
| Pages | 125-138 |
| Number of pages | 14 |
| ISBN (Electronic) | 9781450394505 |
| DOIs | |
| State | Published - 7 Nov 2022 |
| Event | 28th ACM SIGSAC Conference on Computer and Communications Security, CCS 2022 - Hybrid, Los Angeles, United States Duration: 7 Nov 2022 → 11 Nov 2022 |
Publication series
| Name | Proceedings of the ACM Conference on Computer and Communications Security |
|---|---|
| ISSN (Print) | 1543-7221 |
Conference
| Conference | 28th ACM SIGSAC Conference on Computer and Communications Security, CCS 2022 |
|---|---|
| Country/Territory | United States |
| City | Hybrid, Los Angeles |
| Period | 7/11/22 → 11/11/22 |
Bibliographical note
Publisher Copyright:© 2022 ACM.
Funding
Sponsored in part by the Israel Science Foundation (grant No. 2439/20), by JPM Faculty Research Award, by the BIU Center for Research in Applied Cryptography and Cyber Security in conjunction with the Israel National Cyber Bureau in the Prime Minister’s Office, and by the European Union’s Horizon 2020 research and innovation programme under the Marie Skłodowska-Curie grant agreement No. 891234.
| Funders | Funder number |
|---|---|
| JPMorgan Chase and Company | |
| Horizon 2020 Framework Programme | |
| H2020 Marie Skłodowska-Curie Actions | 891234 |
| Israel Science Foundation | 2439/20 |
Keywords
- honest majority
- secure computation
- sorting
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