Chaos-based secure scheme against DNS hijacking in the IP Multimedia Subsystem

In this paper, a chaos-based secure scheme is proposed to defense against DNS hijacking in IP Multimedia Subsystem. The proposed secure scheme encrypts the identifier of the DNS inquiry messages with IMS AKA and NDS keys using Henon chaos algorithm, and the hijacker cannot intrude a legal DNS response to redirect the victim to a malicious destination. The performance evaluation demonstrates that the proposed chaos-based secure scheme is effective and the overall delay and overhead brought in are analyzed to be within the common scale.