Paper 2021/377
Attacks and weaknesses of BLS aggregate signatures
Nguyen Thoi Minh Quan
Abstract
This article discusses existing attacks and known weaknesses of BLS aggregate signatures. The goal is clarify the threat model of BLS aggregate signatures, what security properties that they have and do not have. It’s unfortunate that the weaknesses are not documented anywhere in BLS RFC draft v4 [1]. Confusion, ambiguity, misunderstanding all may cause security issues in practice. We hope that this article can help cryptographic practitioners make informed decisions when using BLS aggregate signatures and deploy mitigations at the application/protocol layer because BLS aggregate signatures might not have security guarantees that you need.
Note: detailed discussion in denial-of-service attack
Metadata
- Available format(s)
-
PDF
- Category
- Public-key cryptography
- Publication info
- Preprint. MINOR revision.
- Keywords
- BLSaggregate signature
- Contact author(s)
- msuntmquan @ gmail com
- History
- 2021-03-23: last of 2 revisions
- 2021-03-22: received
- See all versions
- Short URL
- https://ia.cr/2021/377
- License
-
CC BY
BibTeX
@misc{cryptoeprint:2021/377,
author = {Nguyen Thoi Minh Quan},
title = {Attacks and weaknesses of {BLS} aggregate signatures},
howpublished = {Cryptology {ePrint} Archive, Paper 2021/377},
year = {2021},
url = {https://eprint.iacr.org/2021/377}
}
