# Why are the shiftrows in AES in a fixed order? Can the order be changed?

It seems AES uses fixed shiftrows as follows:

B0  B4  B8  B12  No shift
B1  B5  B9  B13  Right-shift 3 places
B2  B6  B10 B14  Right-shift 2 places
B3  B7  B11 B15  Right-shift 1 place


Would it make a difference to security if the rows were shifted differently? Not to disturb the carefully selected shifts (0, 1, 2 and 3 shifts), but just the order of them: For example:

Right-shift 3 places
No shift
Right-shift 1 place
Right-shift 2 places

• – e-sushi Aug 1 '16 at 12:16