¹ Key Laboratory of Information and Network Security, Engneering College of Chinese Armed Police Force, 710086, P. R. China
² Department of Electronic Information, Xianyang Vocational Technical College, 712000, P. R. China

---

Abstract—Generalized signcryption which proposed by Han is a new cryptographic primitive which can work as an encryption scheme, a signature scheme or a signcryption scheme [5]. However,the security proof in their paper is uncorrect.our contribution are as following:First we give security notions for this new primitive.Secnond,we give an attack to [4]which is the first vision of [5] and propose an improved generalized signcryption scheme. Third, we give correct proofs for this new scheme.

Index Terms—generalized signcryption, provable security, attack, security notions.

[PDF]

Cite: Xu an Wang, Xiaoyuan Yang, and Jindan Zhang, " Provable Secure Generalized Signcryption," Journal of Computers vol. 5, no. 5, pp. 807-814, 2010.