摘要
为了克服很多现有方案不能抵抗公钥替换攻击的缺陷,基于Schnorr签名和计算性Diffie-Hellman问题,提出一个新的高效的无证书签密方案,该方案满足机密性和不可伪造性等安全性质,最后在随机预言模型下给出其安全性证明.
In recent years, there are only a few pairing-free certificateless signcryption schemes invented in re-cent years.They mostly have certain efficiency and security weaknesses.In order to counter the public key substi-tution attack which has threatened many existing schemes, this paper proposes a new certificateless signcryption scheme without pairing based on Schnorr signature and computational Diffie-Hellman problem.The new scheme sat-isfies confidentiality and unforgeablity.Finally, we give its security proof under the random oracle model.
出处
《洛阳师范学院学报》
2014年第11期44-48,共5页
Journal of Luoyang Normal University
基金
河南省教育厅自然科学基金(12B120009)
