CryptoDB
Identity-Based Authenticated Asymmetric Group Key Agreement Protocol
| Authors: | |
|---|---|
| Download: | |
| Abstract: | In identity-based public-key cryptography, an entity's public key can be easily derived from its identity. The direct derivation of public keys in identity-based public-key cryptography eliminates the need for certificates and solves certain public key management problems in traditional public-key cryptosystems. Recently, the notion of asymmetric group key agreement was introduced, in which the group members merely negotiate a common encryption key which is accessible to any entity, but they hold respective secret decryption keys. In this paper, we first propose a security model for identity-based authenticated asymmetric group key agreement (IB-AAGKA) protocols. We then propose an IB-AAGKA protocol which is proven secure under the Bilinear Di±e-Hellman Exponent assumption. Our protocol is also efficient, and readily adaptable to provide broadcast encryption. |
BibTeX
@misc{eprint-2010-23110,
title={Identity-Based Authenticated Asymmetric Group Key Agreement Protocol},
booktitle={IACR Eprint archive},
keywords={public-key cryptography / Identity-Based Public-Key Cryptography, Group Key Agreement, Asymmetric Group Key Agreement, Bilinear Map.},
url={http://eprint.iacr.org/2010/209},
note={The 16th Annual International Computing and Combinatorics Conference (COCOON 2010) lei.zhang@urv.cat 14713 received 14 Apr 2010},
author={Lei Zhang and Qianhong Wu and Bo Qin and Josep Domingo-Ferrer},
year=2010
}