Paper 2021/1126

Turn-Based Communication Channels

Carlo Brunetta, Mario Larangeira, Bei Liang, Aikaterini Mitrokotsa, and Keisuke Tanaka

Abstract

We introduce the concept of turn-based communication channel between two mutually distrustful parties with communication consistency, i.e. both parties have the same message history, and happens in sets of exchanged messages across a limited number of turns. Our construction leverages on timed primitives. Namely, we introduce a novel Delta-delay hash function definition in order to establish turns in the channel. Concretely, we introduce the one-way turn-based communication scheme and the two-way turn-based communication protocol and provide a concrete instantiation that achieves communication consistency.

Note: Minor typo fixes

Metadata
Available format(s)
PDF
Category
Cryptographic protocols
Publication info
Published elsewhere. MAJOR revision.ProvSec 2021
Keywords
Time PuzzleDelayHash FunctionsConsistency
Contact author(s)
brunetta @ chalmers se
History
2021-09-06: received
Short URL
https://ia.cr/2021/1126
License
Creative Commons Attribution
CC BY

BibTeX

@misc{cryptoeprint:2021/1126,
      author = {Carlo Brunetta and Mario Larangeira and Bei Liang and Aikaterini Mitrokotsa and Keisuke Tanaka},
      title = {Turn-Based Communication Channels},
      howpublished = {Cryptology ePrint Archive, Paper 2021/1126},
      year = {2021},
      note = {\url{https://eprint.iacr.org/2021/1126}},
      url = {https://eprint.iacr.org/2021/1126}
}
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