Wiretap Channel with Correlated Sources

This paper studies the problem of secret-message transmission over a wiretap channel with correlated sources in the presence of an eavesdropper who has no source observation. A coding scheme is proposed based on a careful combination of 1) Wyner-Ziv´s source coding to generate secret key from correlated sources based on a certain cost on the channel, 2) one-time pad to secure messages without additional cost, and 3) Wyner´s secrecy coding to achieve secrecy based on the advantage of legitimate receiver´s channel over the eavesdropper´s. The work sheds light on optimal strategies for practical code design for secure communication/storage systems.