PREFIXCODING, Version 2.0, available at:
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is 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