摘要
针对LLH协议不能抵抗伪装攻击的问题,提出一个改进的基于签密的认证密钥协商协议。在计算性Diffie-Hellman问题假设下,利用椭圆曲线密码体制将认证与会话密钥相结合,由此实现协议的双向认证和密钥确认,增强协议的安全性。理论分析结果表明,该协议具有强安全特性,可以抵抗伪装攻击。
The key establishment protocol called LLH can not resist impersonation attack.Aiming at this problem,an improved protocol based on signcryption is proposed.It uses elliptic curve cryptosystem technology under the computational Diffie-Hellman assumption,combines authentication and session key and implements the functions of mutual authentication and key confirmation,so that the security is enhanced.Theoretical analysis results show that the proposed protocol has strong security features and can be resistant to impersonation attack.
出处
《计算机工程》
CAS
CSCD
2012年第10期117-119,共3页
Computer Engineering
基金
国家自然科学基金资助项目(61163053)
关键词
密钥协商
伪装攻击
签密
LLH方案
双向认证
强安全性
key agreement
impersonation attack
signcryption
LLH scheme
mutual authentication
strong security
