Gradecast in Synchrony and Reliable Broadcast in Asynchrony with Optimal Resilience, Efficiency, and Unconditional Security

Ittai Abraham; Gilad Asharov

doi:10.1145/3519270.3538451

Gradecast in Synchrony and Reliable Broadcast in Asynchrony with Optimal Resilience, Efficiency, and Unconditional Security

Ittai Abraham, Gilad Asharov

Department of Computer Science

Dell

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › peer-review

8 Scopus citations

Abstract

We revisit Gradecast (Feldman and Micali, STOC'88) in Synchrony and Reliable Broadcast (Bracha, Information and Computation'87) in Asynchrony. For both tasks ,we provide new protocols that have three desirable properties: (1) optimal resilience, tolerating t < n/3 malicious parties; (2) are communication-efficient, where honest parties send just O(nL) bits for a sender with a message of L = ω(n logn) bits; (3) and are unconditionally secure, without needing to rely on any computational or setup assumptions (while having a statistical error probability). To the best of our knowledge, no previous work obtains all three properties simultaneously.

Original language	English
Title of host publication	PODC 2022 - Proceedings of the 2022 ACM Symposium on Principles of Distributed Computing
Publisher	Association for Computing Machinery
Pages	392-398
Number of pages	7
ISBN (Electronic)	9781450392624
DOIs	https://doi.org/10.1145/3519270.3538451
State	Published - 20 Jul 2022
Event	41st ACM Symposium on Principles of Distributed Computing, PODC 2022 - Salerno, Italy Duration: 25 Jul 2022 → 29 Jul 2022

Publication series

Name	Proceedings of the Annual ACM Symposium on Principles of Distributed Computing

Conference

Conference	41st ACM Symposium on Principles of Distributed Computing, PODC 2022
Country/Territory	Italy
City	Salerno
Period	25/07/22 → 29/07/22

Bibliographical note

Publisher Copyright:
© 2022 ACM.

Funding

Gilad Asharov is sponsored 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

gradecast
reliable broadcast

Access to Document

10.1145/3519270.3538451

Cite this

Abraham, I., & Asharov, G. (2022). Gradecast in Synchrony and Reliable Broadcast in Asynchrony with Optimal Resilience, Efficiency, and Unconditional Security. In PODC 2022 - Proceedings of the 2022 ACM Symposium on Principles of Distributed Computing (pp. 392-398). (Proceedings of the Annual ACM Symposium on Principles of Distributed Computing). Association for Computing Machinery. https://doi.org/10.1145/3519270.3538451

Abraham, Ittai ; Asharov, Gilad. / Gradecast in Synchrony and Reliable Broadcast in Asynchrony with Optimal Resilience, Efficiency, and Unconditional Security. PODC 2022 - Proceedings of the 2022 ACM Symposium on Principles of Distributed Computing. Association for Computing Machinery, 2022. pp. 392-398 (Proceedings of the Annual ACM Symposium on Principles of Distributed Computing).

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Abraham, I & Asharov, G 2022, Gradecast in Synchrony and Reliable Broadcast in Asynchrony with Optimal Resilience, Efficiency, and Unconditional Security. in PODC 2022 - Proceedings of the 2022 ACM Symposium on Principles of Distributed Computing. Proceedings of the Annual ACM Symposium on Principles of Distributed Computing, Association for Computing Machinery, pp. 392-398, 41st ACM Symposium on Principles of Distributed Computing, PODC 2022, Salerno, Italy, 25/07/22. https://doi.org/10.1145/3519270.3538451

Gradecast in Synchrony and Reliable Broadcast in Asynchrony with Optimal Resilience, Efficiency, and Unconditional Security. / Abraham, Ittai; Asharov, Gilad.
PODC 2022 - Proceedings of the 2022 ACM Symposium on Principles of Distributed Computing. Association for Computing Machinery, 2022. p. 392-398 (Proceedings of the Annual ACM Symposium on Principles of Distributed Computing).

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › peer-review

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Abraham I, Asharov G. Gradecast in Synchrony and Reliable Broadcast in Asynchrony with Optimal Resilience, Efficiency, and Unconditional Security. In PODC 2022 - Proceedings of the 2022 ACM Symposium on Principles of Distributed Computing. Association for Computing Machinery. 2022. p. 392-398. (Proceedings of the Annual ACM Symposium on Principles of Distributed Computing). doi: 10.1145/3519270.3538451

Gradecast in Synchrony and Reliable Broadcast in Asynchrony with Optimal Resilience, Efficiency, and Unconditional Security

Abstract

Publication series

Conference

Bibliographical note

Funding

Keywords

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