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There are several schemes that can be used to achieve the diffusion property in a block cipher. Schemes include MDS code, Bit permutation, Byte/ Nibble permutation, Diffusion Matrix, Diffusion Switching Mechanism. The amount of diffusion offered by these schemes seems to be a good criteria to choose the scheme.

As reference I have "On the Diffusion Property of Iterated Functions" (see here). In that document some degree of completeness is being calculated ($D_c$) that I do not understand.

Is there any strategy to quantify how much diffusion is achieved by the above mentioned diffusion schemes?

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  • $\begingroup$ please specify your reference fully. $\endgroup$
    – kodlu
    Apr 19, 2020 at 13:32
  • $\begingroup$ You can find the paper here in the link eprint.iacr.org/2015/873.pdf $\endgroup$
    – Radium
    Apr 20, 2020 at 11:16

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