Paper 2004/244 Original: eprint.iacr.org/2004/244 ↗
Signcryption in Hierarchical Identity Based Cryptosystem
Abstract
In many situations we want to enjoy confidentiality, authenticity and non-repudiation of message simultaneously. One approach to achieve this objective is to "sign-then-encrypt" the message, or we can employ special cryptographic scheme like signcryption. Two open problems about identity-based (ID-based) signcryption were proposed in \cite{CryptoePrint:2003:023}. The first one is to devise an efficient forward-secure signcryption scheme with public verifiability and public ciphertext authenticity, which is promptly closed by \cite{LNCS2971:ICISC2003:CYHC}. Another one which still remains open is to devise a hierarchical ID-based signcryption scheme that allows the user to receive signcrypted messages from sender who is under another sub-tree of the hierarchy. This paper aims at solving this problem by proposing two concrete constructions of hierarchical ID-based signcryption.
Metadata
- Available format(s)
PDF- Category
- Public-key cryptography
- Publication info
- Preprint.
- History
- 2005-02-15: last updated
- 2004-09-22: published
- Short URL
- https://ia.cr/2004/244
- License
- https://creativecommons.org/licenses/by/4.0/
BibTeX
@misc{cryptoeprint:2004/244,
author = {Sherman S. M. Chow and Tsz Hon Yuen and Lucas C. K. Hui and S. M. Yiu},
title = {Signcryption in Hierarchical Identity Based Cryptosystem},
howpublished = {Cryptology {ePrint} Archive, Paper 2004/244},
year = {2004},
url = {https://eprint.iacr.org/2004/244}
}