[Libre-soc-bugs] [Bug 770] Discussion and Finalisation of Which Cryptographic Primitives to Implement

[bugzilla-daemon at libre-soc.org]

https://bugs.libre-soc.org/show_bug.cgi?id=770

--- Comment #3 from Luke Kenneth Casson Leighton <lkcl at lkcl.net> ---
https://cryptobook.nakov.com/symmetric-key-ciphers/popular-symmetric-algorithms

looks like chacha is commonly used, although it is almost laughably simple
https://en.m.wikipedia.org/wiki/Salsa20
comprising add, shift and xor, i'm not sure it's a worthwhile demo

this looks much more interesting as it has bit-swapping:
https://en.m.wikipedia.org/wiki/Serpent_(cipher)

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