### A New Proxy Identity-Based Signcryption Scheme for Partial Delegation of Signing Rights

Hassan Elkamchouchi and Yasmine Abouelseoud

##### Abstract

In this paper, a new identity-based proxy signcryption scheme is presented. The proposed scheme allows partial delegation of signing rights. Consequently, a signature created by the proxy signer is distinguishable from that created by the principal signer. This level of security is a common requirement in many applications to prevent malicious proxy agents from impersonating the principal signer. Moreover, the scheme is based on bilinear pairings over elliptic curves and thus smaller key sizes are required compared to schemes not utilizing elliptic curves. A revocation protocol of dishonest agents is given together with a renewal procedure for the proxies of honest agents. Finally, an application scenario for the proposed scheme is presented.

Available format(s)
Category
Public-key cryptography
Publication info
Published elsewhere. submitted to International Journal of Information Technology
Keywords
identity-based cryptosystemsproxy signcryptionnetwork security
Contact author(s)
yasmine abouelseoud @ gmail com
History
Short URL
https://ia.cr/2008/041

CC BY

BibTeX

@misc{cryptoeprint:2008/041,
author = {Hassan Elkamchouchi and Yasmine Abouelseoud},
title = {A New Proxy Identity-Based Signcryption Scheme for Partial Delegation of Signing Rights},
howpublished = {Cryptology ePrint Archive, Paper 2008/041},
year = {2008},
note = {\url{https://eprint.iacr.org/2008/041}},
url = {https://eprint.iacr.org/2008/041}
}

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