My boss said, that we should better encrypt the secret ingredient of our delicious sauce. But when I used my own AES, I noticed that sometimes, I got totally wrong values. Since I had a great crypto class at my evening school, I managed to nail the error down to the input of the Mix Columns in Round 9. I can't say how, but when the error occurs, exactly one random byte in every column of the state changes. I ran some tests, solely for myself, but my dumb intern posted them on Fluxstagram when making one of his stupid selfies. Well anyway, I hope nobody can use this to recover the main key and decrypt our secret ingredient!

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