Title :
Joint security and channel coding for OFDM communications
Author :
Neri, Alessandro ; Blasi, Daniele ; Gizzi, Luca ; Campisi, Patrizio
Author_Institution :
Dept. of Appl. Electron., Univ. of ROMA TRE, Rome, Italy
Abstract :
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.
Keywords :
OFDM modulation; channel coding; data integration; message authentication; private key cryptography; random codes; telecommunication security; turbo codes; OFDM communication system; Shannon substitution-permutation scheme; integrity verification; joint authentication; joint security and channel coding; message integrity; private session key; pseudorandom punctured Turbo code; user authenticity; Authentication; Cryptography; Joints; OFDM; Turbo codes;
Conference_Titel :
Signal Processing Conference, 2008 16th European
Conference_Location :
Lausanne
