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Is There an Opensource Manual Calculation of AES-128 bit as in Cronos

I have to learn calculations manually.

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    $\begingroup$ Note that the linked implementation contains an error in that ASCII 0 is transformed into hexadecimal byte 0x00. $\endgroup$ – Henno Brandsma Jan 2 at 7:31
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Project Nayuki has an Excel sheet in binary, XML and OpenDocument format. The code doesn't include any Vusial Basic or Macros, they used only the spreadsheet's math functions; VLOOKUP, BITXOR, DEC2HEX, and HEX2DEC.

They have also, a nice video for AES on Youtube and a flash animation if you can run somewhere.

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