A new security scheme and lightweight encryption algorithm for voice over wireless networks connectivity to Internet

The security system designed for Internet of Things IOT should be able to detect and prevent both internal and external attacks. It should be noted that not all connected devices have enough computational power. That means tasks like encrypting data are going to be impossible and any type of security must be lightweight. The privacy of the information on IOT needs a reliable security system that prevents unauthorized access to private data on the network. Cryptographic mechanisms must be smaller and faster but with no reduction in security level. In this work, a new security system for voice over wireless networks is being developed and tested. New encryption algorithms have been developed to meet the Quality of Service QoS requirements of voice traffic and to be suitable for wireless devices. The goal of the research is to reduce the execution time and Energy consumption of the encryption process and at the same time at least maintain or increase its security level. The proposed scheme uses similar methods used in Advanced Encryption Standard algorithm AES, with some changes and enhancements considering the limitations of the wireless device. The new technique introduces triple key usage in this algorithm, making it difficult to break and is more secure. A range of simulation scenarios are setup; testing data is analyzed to test delay, energy, and security. The test results show significant improvements in new design metrics. Also, the comparison between the new algorithms and the standard one shows a significant amount of time and energy consumption reduction being achieved (approximately 30% - 35%), with a high-level of complexity. The results provide and validate a framework for the implementation of security methods. The proposed algorithm is more suitable for wireless devices with limited resources, and it achieves a considerable trade-off solution (balance) between security and QoS, thus it exhibits its applicability for any wireless networks where the resources are limited.