Magnifying Computing Gaps Establishing Encrypted Communication over Unidirectional Channels (Extended Abstract)

Consider two, not necessarily identical, powerful computers or computer-grids connected by a unidirectional communication link that should transfer a long stream of information in the presence of a listening adversary that is slightly weaker. We present schemes that enhance the computation strength gap between the powerful computers and the adversary. In other words, the gap between the amount of information decrypted by the adversary and the information decrypted by the receiver grows with time.