Abstract:

In order to solve the separation between personal communication key and group communication key in traditional Ad Hoc network,we propose a encryption scheme in Ad Hoc network which is based on identity-based cryptosystem,and it has ability of clusterlevel and revocation mechanism.In the scheme,the sender only use one key to specify the access permissions of the encrypted data by using the cluster level,and it can revoke any subset of the members to complete the personal communications or designated members of the group communication.

Key words: Ad Hoc network, encryption program, cluster level