A Documentation of Ethereum’s PeerDAS

Benedikt Wagner; Arantxa Zapico

Paper 2024/1362

A Documentation of Ethereum’s PeerDAS

Benedikt Wagner

, Ethereum Foundation

Arantxa Zapico, Ethereum Foundation

Abstract

Data availability sampling allows clients to verify availability of data on a peer-to-peer network provided by an untrusted source. This is achieved without downloading the full data by sampling random positions of the encoded data. The long-term vision of the Ethereum community includes a comprehensive data availability protocol using polynomial commitments and tensor codes. As the next step towards this vision, an intermediate solution called PeerDAS is about to integrated, to bridge the way to the full protocol. With PeerDAS soon becoming an integral part of Ethereum's consensus layer, understanding its security guarantees is essential. This document aims to describe the cryptography used in PeerDAS in a manner accessible to the cryptographic community, encouraging innovation and improvements, and to explicitly state the security guarantees of PeerDAS.

Metadata

Available format(s): PDF
Category: Public-key cryptography
Publication info: Preprint.
Keywords: Data Availability Sampling Ethereum PeerDAS KZG Polynomial Commitments Erasure Code Commitments
Contact author(s): benedikt wagner @ ethereum org
arantxa zapico @ ethereum org
History: 2024-08-30: approved; 2024-08-29: received; See all versions
Short URL: https://ia.cr/2024/1362
License: CC BY

BibTeX

@misc{cryptoeprint:2024/1362,
      author = {Benedikt Wagner and Arantxa Zapico},
      title = {A Documentation of Ethereum’s {PeerDAS}},
      howpublished = {Cryptology {ePrint} Archive, Paper 2024/1362},
      year = {2024},
      url = {https://eprint.iacr.org/2024/1362}
}