IPSec-Based Key Management in Mobile IP Networks

The IETF standard Mobile IP protocol is modified with IP security (IPSec) primitives, which control the packet flow from a mobile host through multiple security gateways. In addition, IPSec uses strong cryptographic authentication and encryption algorithms to protect the integrity and confidentiality of IP traffic. In this paper, we proposed a key management algorithm for Mobile IP networks based on IPSec. The proposed scheme includes two parts: a wired network and a wireless network. In the wired network part, the proposed scheme produce two keys in each security gateway, transfers a packet with an encrypted key and receives a packet with a decrypted key. In the wireless network part, we use AH to arrive at wireless segment packet security. By the proposed scheme, we can enhance the security of Mobile IP networks.