In a typical secure communication system, messages undergo two different encodings: an error-correcting code is applied at the physical layer to ensure correct reception by the addressee (integrity), while at an upper protocol layer cryptography is leveraged to enforce secrecy with respect to eavesdroppers (confidentiality). All constructive solutions proposed so far to concurrently achieve both integrity and confidentiality at the physical layer, aim at meeting the secrecy capacity of the channel,  i.e. , at maximizing the rate of the code while guaranteeing an asymptotically small information leakage.
['Giulio Aliberti', 'Roberto Di Pietro', 'Stefano Guarino']
Reliable and perfectly secret communication over the generalized Ozarow-Wyner’s wire-tap channel