摘要
简要回顾了密钥管理的基本内容,指出常见的密钥协商协议的不足。介绍了ECC公钥密码体制和整数环上的同态加密机制,提出了基于ECC的同态密钥协商。该协议主要利用ECC的公钥和同态加密机制建立一个等献的、前向保密的会话密钥。和Diffie-Hellman系列密钥协商协议相比,提出的密钥协商协议具有更快的运算速度和基于口令的密钥协商协议相比,提出的密钥协商协议具有较好的安全性。并利用BAN逻辑证明了该协议的安全性。
The basic content of key management is reviewed, and the limitation of the existing key agreement protocol is pointed out. ECC public key cryptosystems and homomorphic encryption scheme in the integer ring is introduced in detail. The homomorphism key agreement based on ECC and homomorphic encryption scheme is presented. Compared with Diffie-Hellman protocol, its operation speed is more quick and compared with key agreement protocol based on password, it has better security. The protocol use the public key of ECC to create the contributory, forward secrecy the session key. Finally, the security of the protocol is proved by BAN logic.
出处
《计算机工程与设计》
CSCD
北大核心
2007年第13期3074-3075,3241,共3页
Computer Engineering and Design
关键词
椭圆曲线加密
同态加密
密钥管理
密钥协商
BAN逻辑
elliptic curve cryptosystem
homomorphic encryption
key agreement
key agreement
BAN logic
