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8 October 2007 Secure OFDM communications based on hashing algorithms
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Abstract
In this paper we propose an OFDM (Orthogonal Frequency Division Multiplexing) wireless communication system that introduces mutual authentication and encryption at the physical layer, without impairing spectral efficiency, exploiting some freedom degrees of the base-band signal, and using encrypted-hash algorithms. FEC (Forward Error Correction) is instead performed through variable-rate Turbo Codes. To avoid false rejections, i.e. rejections of enrolled (authorized) users, we designed and tested a robust hash algorithm. This robustness is obtained both by a segmentation of the hash domain (based on BCH codes) and by the FEC capabilities of Turbo Codes.
© (2007) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Daniele Blasi, Patrizio Campisi, and Alessandro Neri "Secure OFDM communications based on hashing algorithms", Proc. SPIE 6741, Optics and Photonics for Counterterrorism and Crime Fighting III, 67410X (8 October 2007); https://doi.org/10.1117/12.738319
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