An IPSec-Based Key Management Algorithm for Mobile IP Networks

The Mobile IP network environment for users is very vulnerable to malicious attacks, such as denial-of-service, man-in-the-middle, and other types of attacks. For protection, 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. Key-Words: Key management, IPSec, Mobile IP, Network security, Private key, Public key.