Cryptology ePrint Archive: Report 2011/360

Certificateless Aggregate Signcryption Schemes

Ziba Eslami, Nasrollah Pakniat

Abstract: The concept of an aggregate signcryption scheme was first introduced in 2009 by Selvi S.S.D. et. al. in the identity-based setting. The aggregation process of these schemes reduces the amount of exchanged information and is particularly useful in low-bandwidth communication networks and computationally-restricted environments. In this paper, we define a suitable security model for certificateless aggregate signcryption schemes and propose an example which we prove is secure in the random oracle model under the gap Bilinear Diffie-Hellman and computational Diffie-Helman intractability assumptions.

Category / Keywords: public-key cryptography / certificateless, signcryption, bilinear pairing

Date: received 4 Jul 2011

Contact author: hamidpakniat at yahoo com

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Version: 20110706:025139 (All versions of this report)

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