Paper 2019/672

A Blockchain-Assisted Hash-Based Signature Scheme

Ahto Buldas, Risto Laanoja, and Ahto Truu

Abstract

We present a server-supported, hash-based digital signature scheme. To achieve greater efficiency than current state of the art, we relax the security model somewhat. We postulate a set of design requirements, discuss some approaches and their practicality, and finally reach a forward-secure scheme with only modest trust assumptions, achieved by employing the concepts of authenticated data structures and blockchains. The concepts of blockchain authenticated data structures and the presented blockchain design could have independent value and are worth further research.

Metadata
Available format(s)
PDF
Category
Cryptographic protocols
Publication info
Published elsewhere. NordSec 2018
DOI
10.1007/978-3-030-03638-6_9
Keywords
digital signatureshash functionspublic-key cryptography
Contact author(s)
ahto truu @ guardtime com
History
2019-06-06: received
Short URL
https://ia.cr/2019/672
License
Creative Commons Attribution
CC BY

BibTeX

@misc{cryptoeprint:2019/672,
      author = {Ahto Buldas and Risto Laanoja and Ahto Truu},
      title = {A Blockchain-Assisted Hash-Based Signature Scheme},
      howpublished = {Cryptology {ePrint} Archive, Paper 2019/672},
      year = {2019},
      doi = {10.1007/978-3-030-03638-6_9},
      url = {https://eprint.iacr.org/2019/672}
}
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