Provable Secure Identity Based Generalized Signcryption Scheme

Details Provable Secure Identity Based Generalized Signcryption Scheme Provable Secure Identity Based Generalized Signcryption Scheme

2010-04-08

arxiv.org/abs/1004.1304v1

Computer Science

Cryptography and Security

Scientific paper

According to actual needs, generalized signcryption scheme can flexibly work as an encryption scheme, a signature scheme or a signcryption scheme. In this paper, firstly, we give a security model for identity based generalized signcryption which is more complete than existing model. Secondly, we propose an identity based generalized signcryption scheme. Thirdly, we give the security proof of the new scheme in this complete model. Comparing with existing identity based generalized signcryption, the new scheme has less implementation complexity. Moreover, the new scheme has comparable computation complexity with the existing normal signcryption schemes.

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