IP multimedia subsystem (IMS) is a rising "platform for provisioning multimedia services (e.g., data, voice, and video) in 4G/5G systems. IMS "authentication is an essential methodology which grants legitimate users access to multimedia services. However, periodic re-validation of portable clients (mobile users) results in significant signalling traffic overhead due to the complete execution of the hectic procedure. Additionally, signalling protocol, for example, SIP overlooks clients' secrecy by leaving the unprotected public and private identities. In IMS every client entering from another...

Multimedia communications and information security are two active areas in both academia and industry. These two separate worlds are expected to continue playing important roles in the information era. The trend shows a fusion between them to allow secure delivery of multimedia data. Image encryption is rapidly increased recently by the increasing use of the internet and communication media. Important images are shared over unsecured channels is liable for attacking and stealing.