Paper 2025/1005 Original: eprint.iacr.org/2025/1005 ↗
TEAKEX: TESLA-Authenticated Group Key Exchange
Abstract
We present a highly efficient authenticated group key exchange protocol, TEAKEX, using only symmetric key primitives. Our protocol provides proven strong security, including forward secrecy, post-compromise security, and post-quantum security. For online applications we claim that TEAKEX is much simpler and more efficient than currently available alternatives. As part of our construction we also give a new abstract security definition for delayed authentication and describe its instantiation with the TESLA protocol.
Metadata
- Available format(s)
PDF- Category
- Cryptographic protocols
- Publication info
- Preprint.
- History
- 2025-05-31: last updated
- 2025-05-31: published
- Short URL
- https://ia.cr/2025/1005
- License
- https://creativecommons.org/licenses/by/4.0/
BibTeX
@misc{cryptoeprint:2025/1005,
author = {Qinyi Li and Lise Millerjord and Colin Boyd},
title = {TEAKEX: TESLA-Authenticated Group Key Exchange},
howpublished = {Cryptology {ePrint} Archive, Paper 2025/1005},
year = {2025},
url = {https://eprint.iacr.org/2025/1005}
}