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Efficient Certificateless Signcryption Scheme from Weil Pairing

Author(s): Gang Yu | Hongzhi Yang | Shuqin Fan | Yong Shen | Wenbao Han

Journal: Journal of Networks
ISSN 1796-2056

Volume: 6;
Issue: 9;
Start page: 1280;
Date: 2011;
Original page

Keywords: certificateless public key cryptography | weil pairing | signcryption | public verfiability | forward security

Certificateless signcryption has both the advantage of certificateless public key cryptography, which overcome the escrow problem inherited from identity based cryptography without the use of certificates as in traditional public key cryptography, and signcryption which can fulfill both the functions of signature and encryption in a logical signal step. In this paper, we explicit the security model for certificateless signcryption and propose an efficient certificateless signcryption scheme from Weil pairings. The new scheme not only can be proved to be secure in our model but also can simultaneously provide public verifiability and forward security. Furthermore, compared with existing schemes, the new scheme is more efficient.
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