PREFIXCODING, Version 2.0, available at:
formatting linkis an encryption scheme (with authentication) with pseudo-random prefix codes substitution and pseudo-random transposition. It has two kinds of processing dynamics: re-generation of the code table and injection of dummy bits. There is a shuffling of the plaintext string as pre-processing and a shuffling of the byte sequence resulting from prefix encoding as post-processing.
M. K. Shen