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Efficient Generalized Signcryption Schemes
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Abstract: | Generalized signcryption is a new cryptographic primitive which works as a signcryption scheme, a signature scheme and an encryption scheme as per need. Recently Ji et al. proposed a security model for certificateless generalized signcryption scheme and also proposed a scheme which they claim is secure under the proposed security model. In this paper we show that Ji et al. scheme is not existentially unforgeable against Type-I adversary and propose a simplified certificateless generalized signcryption. We also present an efficient identity based generalized signcryption scheme. |
BibTeX
@misc{eprint-2010-23247, title={Efficient Generalized Signcryption Schemes}, booktitle={IACR Eprint archive}, keywords={public-key cryptography / signcryption, generalized signcryption, identity based cryptography, certificateless cryptography}, url={http://eprint.iacr.org/2010/346}, note={ pra.ibs@gmail.com, sunder_lal2@rediffmail.com 14776 received 16 Jun 2010}, author={Prashant Kushwah and Sunder Lal}, year=2010 }