Paper 2020/1055 Original: eprint.iacr.org/2020/1055 ↗
Synced Hash-Based Signatures: Post-Quantum Authentication in a Blockchain
Abstract
A new post-quantum, hash-based signature (HBS) scheme is introduced. In known HBS, the size and cost of each signature increase as the total number of messages one wishes to authenticate increase. In real-world applications, requiring large volumes of signatures, they can become impractical. This paper studies HBS in a blockchain: a public, decentralized database. The proposed HBS scheme shows that, when all signatures are known, quite the opposite is possible: the signatures can become more efficient as the number of signatures grows. Authenticating large volumes of messages results less costly on average than authenticating only a few.
Metadata
- Available format(s)
PDF- Category
- Public-key cryptography
- Publication info
- Preprint.
- History
- 2020-09-01: last updated
- 2020-09-01: published
- Short URL
- https://ia.cr/2020/1055
- License
- https://creativecommons.org/licenses/by/4.0/
BibTeX
@misc{cryptoeprint:2020/1055,
author = {Santi J. Vives},
title = {Synced Hash-Based Signatures: Post-Quantum Authentication in a Blockchain},
howpublished = {Cryptology {ePrint} Archive, Paper 2020/1055},
year = {2020},
url = {https://eprint.iacr.org/2020/1055}
}