In this paper we propose an algorithm for joint authentication, integrity verification and channel coding, optimized for OFDM based communication systems. Joint security and channel coding is performed by means of a Shannon's substitution-permutation scheme and a pseudo-random punctured Turbo Code, whose actual parameters are set in accordance to a private session key. User authenticity and message integrity are verified comparing the log-likelihood of the decoded ciphertext with a threshold, adapted to actual channel condition.
['Alessandro Neri', 'Daniele Blasi', 'Luca Gizzi', 'Patrizio Campisi']
Joint security and channel coding for OFDM communications