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. 2021 Jun 26;21(13):4388. doi: 10.3390/s21134388
Algorithm 1 SHA-256.
  • 1:

    for Compression Function do

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        Message Schedule module (Equation (1))

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        Words are prepared for each round Maj (Equation (2))

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        for First 16 rounds Wn do (Equation (3))

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            Six registers b,c,d,f,g,h are updated with the previous registers

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            K are a set of 64 constant words (Equations (4) and (5))

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            After 64 rounds of operation H1 to H7

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            if thenH7i=H7i−7

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                  Final 256-bit Hash value is obtained by concatenating 32-bit values

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            end if

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            Hash digest = H0M to H1M

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        end for

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    end for