Covert channels in online rogue-like games

摘要

Covert channels allow two parties to exchange secret data in the presence of adversaries without disclosing the fact that there is any secret data in their communications. We propose and implement EEDGE, an improved method for steganography in mazes that builds upon the work done by Lee et al; and has a significantly higher embedding capacity. We apply EEDGE to the setting of online rogue-like games, which have randomly generated mazes as the levels for players; and show that this can be used to successfully create an efficient, error-free, high bit-rate covert channel.