Paper 2005/405 Original: eprint.iacr.org/2005/405 ↗
Building Better Signcryption Schemes with Tag-KEMs
Abstract
Signcryption schemes aim to provide all of the advantages of simultaneously signing and encrypting a message. Recently, Dent and Bjørstad investigated the possibility of constructing provably secure signcryption schemes using hybrid KEM-DEM techniques. We build on this work by showing that more efficient insider secure hybrid signcryption schemes can be built using Tag-KEMs. To prove the effectiveness of this construction, we will provide several examples of secure signcryption Tag-KEMs, including a brand new construction based on the Chevallier-Mames signature scheme which has the tightest known security reductions for both confidentiality and unforgeability.
Metadata
- Available format(s)
PDF- Category
- Public-key cryptography
- Publication info
- Preprint.
- History
- 2006-04-26: last updated
- 2005-11-14: published
- Short URL
- https://ia.cr/2005/405
- License
- https://creativecommons.org/licenses/by/4.0/
BibTeX
@misc{cryptoeprint:2005/405,
author = {Tor E. Bjørstad and Alexander W. Dent},
title = {Building Better Signcryption Schemes with Tag-KEMs},
howpublished = {Cryptology {ePrint} Archive, Paper 2005/405},
year = {2005},
url = {https://eprint.iacr.org/2005/405}
}