A Python implementation of encryption with prefix codes

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PREFIXCODING, Version 2.0, available at:
http://s13.zetaboards.com/Crypto/topic/7164646/1 /, 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

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