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Implementing a cipher or protocol is the process of taking it from its mathematical or algorithmic description and producing a working version, often in computer software or hardware. This tag should be used for any question discussing the various potential considerations and pitfalls of this process, for example padding.

12 votes
2 answers
1k views

Can one implement AES on 4-bit microcontroller?

I have yet to come across AES been employed on 4-bit microcontroller, therefore I have been wondering whether such implementation is feasible. …
cLaRe's user avatar
  • 171
5 votes
1 answer
433 views

Best choice of finite field for AES on a 4-bit microcontroller?

As the finite field of $GF(2^8)$ are isomorphic to $GF((2^4)^2)$, $GF((2^2)^4)$ and $GF(((2^2)^2)^2)$, which of the fields is best suited and most efficient for 4-bit MCU and why? Would it be $GF((2^4 …
cLaRe's user avatar
  • 171