BLT+L: Efficient Signatures from Timestamping and Endorsements

Denis Firsov, Denis Firsov, Henri Lakk, Sven Laur, Ahto Truu

2021

Abstract

We propose a new digital signature scheme based on combining cryptographic timestamping with an endorsement scheme, both of which can be constructed from one-way and collision-resistant hash functions. The signature scheme is efficient and allows balancing of key generation and signing time for signature size and verification time. The security analysis is based on a realistic model of timestamping. As part of our construction, we introduce the novel concept of endorsements, which may be of independent interest.

Paper Citation

in Harvard Style

Firsov D., Lakk H., Laur S. and Truu A. (2021). BLT+L: Efficient Signatures from Timestamping and Endorsements. In Proceedings of the 18th International Conference on Security and Cryptography - Volume 1: SECRYPT, ISBN 978-989-758-524-1, pages 75-86. DOI: 10.5220/0010530000750086

in Bibtex Style

@conference{secrypt21,
author={Denis Firsov and Henri Lakk and Sven Laur and Ahto Truu},
title={BLT+L: Efficient Signatures from Timestamping and Endorsements},
booktitle={Proceedings of the 18th International Conference on Security and Cryptography - Volume 1: SECRYPT,},
year={2021},
pages={75-86},
publisher={SciTePress},
organization={INSTICC},
doi={10.5220/0010530000750086},
isbn={978-989-758-524-1},
}

in EndNote Style

TY - CONF

JO - Proceedings of the 18th International Conference on Security and Cryptography - Volume 1: SECRYPT,
TI - BLT+L: Efficient Signatures from Timestamping and Endorsements
SN - 978-989-758-524-1
AU - Firsov D.
AU - Lakk H.
AU - Laur S.
AU - Truu A.
PY - 2021
SP - 75
EP - 86
DO - 10.5220/0010530000750086