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  1. def shiftRows(state):
  2.     for i in range(4):
  3.         state[i::4] = rotate(state[i::4],i)
  4.  
  5. def shiftRowsInv(state):
  6.     for i in range(4):
  7.         state[i::4] = rotate(state[i::4],-i)
  8.  
  9. def mixColumns(state):
  10.     for i in range(4):
  11.         column = []
  12.         # create the column by taking the same item out of each "virtual" row
  13.         for j in range(4):
  14.             column.append(state[i*4+j])
  15.  
  16.         # apply mixColumn on our virtual column
  17.         mixColumn(column)
  18.  
  19.         # transfer the new values back into the state table
  20.         for j in range(4):
  21.             state[i*4+j] = column[j]
  22.  
  23. def mixColumnsInv(state):
  24.     for i in range(4):
  25.         column = []
  26.         # create the column by taking the same item out of each "virtual" row
  27.         for j in range(4):
  28.             column.append(state[i*4+j])
  29.  
  30.         # apply mixColumn on our virtual column
  31.         mixColumnInv(column)
  32.  
  33.         # transfer the new values back into the state table
  34.         for j in range(4):
  35.             state[i*4+j] = column[j]
Success #stdin #stdout 0.01s 8968KB
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https://ideone.com/di7GBN
language:
Python (cpython 2.7.16)
created:
8 years ago
visibility:
public

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