def doMixColumns(nRows, nColumns, wordSize):
mixColumns = MixColumns(nRows, nColumns, wordSize)
state = [[randint(0, 2**wordSize)
for i in range(nColumns)]
for j in range(nRows)]
mixColumns.do(state)
print("MixColumns(%2d, %2d, %2d)-> %6d xors"
% (nRows, nColumns, wordSize, mixColumns.xors))
def test_base(loglevel):
stateMatrix = [[0x00, 0x01, 0x02, 0x03],
[0x10, 0x11, 0x12, 0x13],
[0x20, 0x21, 0x22, 0x23],
[0x30, 0x31, 0x32, 0x33]]
mixcolumns = MixColumns(4, 4, 8, loglevel=levelFromMeaning(loglevel))
print("Testing %s, details:\nEach value in a cell will be interpreted "
"as a polynomial representation of a binary field extension "
"modulo %s, and the columns as polynomial in a ring modulo %s."
% (mixcolumns, mixcolumns.SubfieldModulo,
mixcolumns.PolynomialRingModulo))
stateConverted = mixcolumns.do(stateMatrix)
if mixcolumns.invert(stateConverted) == stateMatrix:
return True
print("ALERT:\n\t%s\n!=\n\t%s" % (stateMatrix, stateConverted))
return False
def test_aes128_round1(loglevel):
stateMatrix = [[99, 9, 205, 186],
[83, 96, 112, 202],
[224, 225, 183, 208],
[140, 4, 81, 231]] # 0x6353e08c0960e104cd70b751bacad0e7
stateMixed = [[95, 87, 247, 29],
[114, 245, 190, 185],
[100, 188, 59, 249],
[21, 146, 41, 26]] # 0x5f72641557f5bc92f7be3b291db9f91a
mixcolumns = MixColumns(4, 4, 8)
mixcolumns.logLevel = levelFromMeaning(loglevel)
print("Testing AES128 round1")
stateConverted = mixcolumns.do(stateMatrix)
if stateMixed == stateConverted:
return True
print("ALERT:\n\t%s\n!=\n\t%s" % (stateMixed, stateConverted))
return False