基于ECC的自认证代理签密方案

Self-certified Proxy Signcryption Scheme Based on Elliptic Curve Cryptography

为了克服代理签密中的证书管理问题和密钥托管问题,提出了一种新的基于椭圆曲线密码体制(ECC)的自认证代理签密方案,其困难性基于椭圆曲线离散对数问题(ECDLP)。与已有文献相比,此方案具有安全性强、密钥长度短、所需要存储空间少、占用带宽小、计算量和通信量低等优点。

To overcome certificate management problem and key escrow problem in proxy signcryption schemes, a new self-certified proxy signcryption scheme based on elliptic curve cryptography（ECC） was proposed,it hardness relys on elliptic curve discrete logarithm problem（ECDLP）. Compared with the existence literatures, the proposed scheme possesses good security and shorter key,less requirement of storage space and less bandwith requirement,lower computational complexity and communication cost.