基于身份的一次性盲公钥方案

在现有方案的基础上,通过分析超椭圆曲线双线性对和基于身份的特点,给出了一个改进的基于身份的一次性盲公钥方案。该方案由用户和可信中心共同完成用户密钥的生成,克服了密钥托管问题,避免了由可信中心进行密钥管理所产生的安全隐患。新构造的方案能够抵抗伪造性攻击,具有不可欺骗性,又保证了一次性盲公钥的独立性,是安全可靠的。而且方案中用户在通讯时可以使用不同的公钥,解决了Internet通信中的匿名认证问题,实现了用户隐私的有效保护。

One-off Blind Public Key Scheme Based on Identity

By analyzing the characteristic of the bilinear pairings on hyper-elliptic curves and identity-based cryptography,an improved one-off blind public key scheme based on the existing schemes is proposed.The scheme solves the problem of the key escrow by users and trust center generated encryption key,so it avoids security problems caused by single independent key management.The scheme is robust against the Forgery attack and ensures the independence of user’s public key.This scheme is satisfied.And user’s public key is different every time,it can be applied to implementing internet anonymous attestation for privacy protection.