Paper 2003/011 Original: eprint.iacr.org/2003/011 ↗
Cryptanalysis of Lee-Hwang-Li's Key Authentication Scheme
Abstract
Key authentication is very important in secret communications and data security. Recently, Lee, Hwang and Li proposed a new public key authentication scheme for cryptosystems with a trusty server. However, in this paper, we will show that Lee-Hwang-Li's key authentication scheme is not secure, from the obtained public information, any one can get the private key of the user. And then, we propose an improved scheme. We conclude that our new key authentication scheme not only resolves the problems appeared but also is secure.
Metadata
- Available format(s)
PDF- Publication info
- Preprint.
- History
- 2003-03-12: last updated
- 2003-01-22: published
- Short URL
- https://ia.cr/2003/011
- License
- https://creativecommons.org/licenses/by/4.0/
BibTeX
@misc{cryptoeprint:2003/011,
author = {Fangguo Zhang and Kwangjo Kim},
title = {Cryptanalysis of Lee-Hwang-Li's Key Authentication Scheme},
howpublished = {Cryptology {ePrint} Archive, Paper 2003/011},
year = {2003},
url = {https://eprint.iacr.org/2003/011}
}