ID口令进化的Ad Hoc网络会话密钥方案

提出了一种基于通信节点身份标识(ID)的口令进化的Ad hoc网络会话密钥方案,该方案包括系统初始化、基于ID的口令进化算法、节点身份认证算法和节点会话密钥算法4部分.方案中采用基于通信节点ID的口令作为节点身份认证和节点会话密钥的主要参数,减少了计算复杂度和交互次数,并采用了口令进化算法,使得相同节点每次通信的口令不同.而不同的口令和不同的随机数,又使得相同节点每次通信的密钥对不同,会话密钥也不同,既提高了口令的安全性,也提高了整个密钥方案的安全性.该方案的密钥不依赖任何控制节点,非常适合Ad hoc移动网络.该方案可以抵抗针对口令的字典攻击和各种密钥算法攻击,具有与RSA等同的安全性.

Conversation Keys Scheme Bases ID and Evolved Passwords in Ad hoc Network

A practicable and secure conversation keys scheme for Ad hoc network is presented. The scheme is composed of system initialization with the help of identity-based（ID-based）and evolved passwords algorithm, nodes’ identity authenticated algorithm and conversation keys algorithm. In the nodes’ identity authenticated algorithm and the conversation keys algorithm, the ID-based passwords can reduce the computational complexity and interactive times. Additionally, the evolved passwords and random value means that the same nodes have different passwords, different keys pairs and different conversation keys during every communications. The scheme applies to the Ad hoc network also because the conversation keys don’t depend on any node. The scheme is secure against dictionary attack and types of key attacks.