Fast Algorithms for Cryptocodes Based on Quasigroups

In this chapter, we consider coding/decoding algorithms for RSBQ called Fast-Cut-Decoding and Fast-4-Sets-Cut-Decoding algorithms. The goal of these algorithms is to increase the decoding speed and decrease the probability of bit-error. Here, we present several experimental results obtained with these algorithms and analyze the results for bit-error and packet-error probabilities and decoding speed when messages are transmitted through Gaussian channels with different values of signal-to-noise ratio. Also, we investigate the performances of fast algorithms for the transmission of images and audio files.