# Efficient Key Exchange Using Identity-Based Encryption in Multipath TCP Environment  
[PERSON]  
1 Industrial Engineering Department, King Khalid University, Abha 62529, Saudi Arabia; [EMAIL_ADDRESS] (M.R.N.M.Q. ); [EMAIL_ADDRESS] (N.A. )1 Industrial Engineering Department, King Khalid University, Abha 62529, Saudi Arabia; [EMAIL_ADDRESS] (M.R.N.M.Q. ); [EMAIL_ADDRESS] (N.A. )1 Industrial Engineering Department, King Khalid University, Abha 62529, Saudi Arabia; [EMAIL_ADDRESS] (M.R.N.M.Q. ); [EMAIL_ADDRESS] (N.A. )1 Industrial Engineering Department, King Khalid University, Abha 62529, Saudi Arabia; [EMAIL_ADDRESS] (M.R.N.M.Q. ); [EMAIL_ADDRESS] (N.A. )1 Industrial Engineering Department, King Khalid University, Abha 62529, Saudi Arabia; [EMAIL_ADDRESS] (M.R.N.M.Q. ); [EMAIL_ADDRESS] (N.A. )1 Industrial Engineering Department, King Khalid University, Abha 62529, Saudi Arabia; [EMAIL_ADDRESS] (M.R.N.M.Q. ); [EMAIL_ADDRESS] (N.A. )1 Industrial Engineering Department, King Khalid University, Abha 62529, Saudi Arabia; [EMAIL_ADDRESS] (M.R.N.M.Q. ); [EMAIL_ADDRESS] (N.A. )1 Industrial Engineering Department, King Khalid University, Abha 62529, Saudi Arabia; [EMAIL_ADDRESS] (M.R.N.M.Q. ); [EMAIL_ADDRESS] (N.A. )1 Industrial Engineering Department, King Khalid University, Abha 62529, Saudi Arabia; [EMAIL_ADDRESS] (M.R.N.M.Q. ); [EMAIL_ADDRESS] (N.A. )1 Industrial Engineering Department, King Khalid University, Abha 62529, Saudi Arabia; [EMAIL_ADDRESS] (M.R.N.M.Q. ); [EMAIL_ADDRESS] (N.A. )1 Industrial Engineering Department, King Khalid University, Abha 62529, Saudi Arabia; [EMAIL_ADDRESS] (M.R.N.M.Q. ); [EMAIL_ADDRESS] (N.A. )1 Industrial Engineering Department, King Khalid University, Abha 62529, Saudi Arabia; [EMAIL_ADDRESS] (M.R.N.M.Q. ); [EMAIL_ADDRESS] (N.A. )1 Industrial Engineering Department, King Khalid University, Abha 62529, Saudi Arabia; [EMAIL_ADDRESS] (M.R.N.M.Q. ); [EMAIL_ADDRESS] (N.A. )1 Industrial Engineering Department, King Khalid University, Abha 62529, Saudi Arabia; [EMAIL_ADDRESS] (M.R.N.M.Q. ); [EMAIL_ADDRESS] (N.A. )1 Industrial Engineering Department, King Khalid University, Abha 62529, Saudi Arabia; [EMAIL_ADDRESS] (M.R.N.M.Q. ); [EMAIL_ADDRESS] (N.A. )1 Industrial Engineering Department, King Khalid University, Abha 62529, Saudi Arabia; [EMAIL_ADDRESS] (M.R.N.M.Q. ); [EMAIL_ADDRESS] (N.A. )1 Industrial Engineering Department, King Khalid University, Abha 62529, Saudi Arabia; mrmooz@kku. 4G/LTE, etc. ), yet to have reliable communication, the applications use transmission control protocol (TCP) [1] as a transport layer protocol, which restricts the utilization of network resources by binding the connection over a single path as shown in Figure 1[2]. The increment in usage of internet-enabled mobile devices in daily life increases the demand for higher bandwidth, fine-grained access control, and privacy of data for the real-time Internet-of-Things (IoT) based applications in the domain of smart healthcare, smart city, smart grid, etc. [3; 4; 5]. Multipath TCP (MPTCP), the most promising extension of TCP, is an emerging transport layer protocol that overcomes the limitations of TCP and offers higher bandwidth and low-latency connections through bandwidth aggregation. It also offers resiliency by using soft handovers among paths at the time of failure. The integration of 5G and MPTCP improves the overall network performance by allowing for the use of Wi-Fi and mobile data simultaneously in mobile devices, which attracts many industries and academic fields to fulfill the incredible demand for high-speed communication in various fields. The third-generation partnership project (3 GPP), the organization that has led mobile communication standards, has demonstrated the prototype for the integration of MPTCP with 5G networks to support the usage of Wi-Fi and 5G simultaneously [6]. Many companies such as Apple, Tessars, 3 GPP, Samsung, Huawei, etc.