Message authentication algorithm for OFDM communication systems
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Message authentication algorithm for OFDM communication systems Reem Melki1
· Hassan N. Noura1 · Javier Hernandez Fernandez2,3 · Ali Chehab1
Accepted: 21 September 2020 © Springer Science+Business Media, LLC, part of Springer Nature 2020
Abstract With the huge expansion in the telecommunications industry, the need for robust information security is becoming more critical than ever. Physical Layer Security has, recently, emerged as a promising candidate to secure emerging communication systems in a lightweight manner. This approach has proven to be superior to existing schemes, which has motivated many researchers to shift their work towards studying, understanding and exploiting the randomness of the physical layer. In this context, this paper presents a novel keyed-hash function for Orthogonal Frequency Division Multiplexing (OFDM) systems based on the physical characteristics and properties of wireless channels. More specifically, communicating entities sharing the same channel, extract common properties and mix them with a pre-shared secret key to produce a channel-based dynamic key. This key will later be used to generate the cipher primitives needed for performing source authentication and message integrity of the transmitted OFDM symbols. Since OFDM symbols, in the frequency-domain and time-domain, have different properties, the proposed keyed-hash function is modified and adapted to suit each case leading to two variants of the solution. To the best of our knowledge, this is the first work that proposes a keyed-hash function for complex OFDM symbols, based on physical layer conditions. Finally, different security and performance tests are conducted to prove the robustness and efficiency of this technique, in comparison to currently employed message authentication schemes. Keywords Physical layer security · OFDM · Source authentication and message integrity · Dynamic cryptographic primitives
1 Introduction Orthogonal Frequency Division Multiplexing (OFDM) became a popular digital modulation scheme for a large number of broadband communication systems [1]. This technology is still being proposed for emerging systems to achieve reliable and high date rate transmission, and it continues to be extensively studied from different perspectives. Specifically, it is extremely important to improve the security
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Reem Melki [email protected] Hassan N. Noura [email protected] Javier Hernandez Fernandez [email protected] Ali Chehab [email protected]
1
Department of Electrical and Computer Engineering, American University of Beirut, Beirut, Lebanon
2
Iberdrola Innovation Middle East, Doha, Qatar
3
Division of ICT, College of Science and Engineering, Hamad Bin Khalifa University, Education City, Qatar
level of OFDM systems in order to make it more reliable and robust against different types of attacks. For this purpose, several physical layer security (PLS) schemes, which target different security services, have been proposed in the literature [2]. In general, this class of security schemes exploits the h
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