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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.