Old Skool Crypto: Enigma machine as a TeX package; written in TeX and Lua.

[Razer]

Above my pay grade to comment about it.

See:
http://ftp.math.purdue.edu/mirrors/ctan.org/macros/luatex/generic/enigma/

Source: https://twitter.com/SteveBellovin/status/787493140580237312