期刊名称：International Journal of Network Security & Its Applications
印刷版ISSN：0975-2307
电子版ISSN：0974-9330
出版年度：2012
卷号：4
期号：3
DOI：10.5121/ijnsa.2012.430
出版社：Academy & Industry Research Collaboration Center (AIRCC)
摘要：Signcryption is a cryptographic primitive which performs encryption and signature in a single logical stepwith the cost lower than signature-then-encryption approach. Recently, Li et al. [35] proposed the first provable secure identity based signcryption without random oracles. In their scheme sender signs the ciphertext.However, in [11] Boyen showed that non-repudiation is easily achieved if the sender sign the plaintext rather than ciphertext.In this paper we proposed anidentity based signcryption scheme without random oracles, which provides the non-repudiation with respect to plaintext. We also proposed anidentity based publicverifiable signcryption scheme with third party verification in the standard model.
关键词：igncryption;identity based cryptography; provable security; standard model; public verifiable ;signcryption
