Where can I find a clear algorithm diagram of SPECK algorithm? I want to follow steps to write ARM assembly code.

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    $\begingroup$ The original paper has some good code in the supporting documentation. There's also ASM code in the linux kernel for SPECK that was removed as things got AES-NI. $\endgroup$
    – b degnan
    May 1, 2023 at 15:53

1 Answer 1


Where can I find a clear algorithm diagram of speck algorithm?

Have you looked at the spec wiki page - that (at the time I write this) includes both an algorithm diagram and a C implementation (however, the C implementation uses more #define's than I would use to explain things...)

  • $\begingroup$ Personally I would use precisely zero defines to explain things :) $\endgroup$
    – Maarten Bodewes
    May 1, 2023 at 15:47

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