IPsec Cryptography for Data Packets Security within VPN Tunneling Networks Communications

The internet today allows us to communicate with anyone from anywhere in the world. This kind of access is available to legitimate as well as illegitimate users. Therefore, data security is required to be updated from time to time to prevent hacking attacks. To access all data with a high level of security, along with obtaining an excellent quality of service, Virtual Private Network (VPN) is considered as one of the optimum solutions. In this paper, we introduce a faster way and more confidential encryption method to packet payloads for tunnel networks, based on public-key generation by using a linear feedback shift register. In this mechanism, parallel processing of internet protocol security (IPsec) for the packets is achieved. The proposed method is considered as an approach to improve the handling of IPsec by using one of its efficient members called Encapsulating Security Payload (ESP) protocol. The latter shows superiority over other protocols utilized for the same purposes as the Secure Sockets Layer (SSL). Furthermore, it is found that the data flow is increased by using IPsec type Authentication Header (AH) protocol. Additionally, this proposed technique can satisfy a significant reduction in the delay caused by encryption by at least 15%, along with increasing the efficiency and the throughput on the Internet. Moreover, the proposed cryptography enables the development of special processors for encryption with Field Programmable Gate Array (FPGA) chips that can be available in the form of devices attached to networks.