def test_findPolys_preamble(self):
dataList = []
dataList.append( ("CC71FB2EE1", "BE0D") )
dataList.append( ("FFD5C0A73B", "D9B4") )
inputData = InputData()
inputData.convert( dataList )
foundCRC = self.crcFinder.findPolys(inputData, 8)
# print "found data:", foundCRC
self.assertIn( PolyKey(0x18005, 0, 32, rev=False ), foundCRC )
def test_convert(self):
data = [("E21EAB43EA0B478F52AF6E034D310D819DBC3F", "A2B0A")]
parser = InputData()
parser.convert(data)
self.assertEqual(parser.dataSize, 152)
self.assertEqual(parser.crcSize, 20)
self.assertIn(
(5042640062004119076411731879610313259117034559L, 666378),
parser.numbersList)
def test_bruteForceInput_xor(self):
dataList = []
dataSize = 16
crcSize = 8
inputPoly = 0x185
regInit = 0x0
xorOut = 0x0A
reverse = False
## init: 0, xor: 0, rev, poly: 0x18005
self.crcProc.setReversed(reverse)
self.crcProc.setXorOutValue(xorOut)
self.crcProc.setRegisterInitValue(regInit)
data1 = 0xABCD
crc1 = self.crcProc.calculate2(data1, dataSize, inputPoly, crcSize)
dataList.append((data1, crc1))
data2 = data1 ^ 0x0010
crc2 = self.crcProc.calculate2(data2, dataSize, inputPoly, crcSize)
dataList.append((data2, crc2))
dInput = InputData(dataList, dataSize, crcSize)
foundCRC = self.crcFinder.bruteForcePairs(dInput, 0)
# print "found data:", foundCRC
self.assertIn(
CRCKey(inputPoly, regInit, xorOut, 0, dataSize, rev=reverse),
foundCRC)
def test_findPolys_poly(self):
dataList = []
dataSize = 16
crcSize = 16
inputPoly = 0x18005
regInit = 0x0
xorOut = 0x0
reverse = False
## init: 0, xor: 0, rev, poly: 0x18005
self.crcProc.setReversed(reverse)
self.crcProc.setXorOutValue(xorOut)
self.crcProc.setRegisterInitValue(regInit)
data1 = 0xABCD
crc1 = self.crcProc.calculate2(data1, dataSize, inputPoly, crcSize)
dataList.append( (data1, crc1) )
data2 = data1 ^ 0x0010
crc2 = self.crcProc.calculate2(data2, dataSize, inputPoly, crcSize)
dataList.append( (data2, crc2) )
inputData = InputData(dataList, dataSize, crcSize)
foundCRC = self.crcFinder.findPolys(inputData, 0)
# print "found data:", foundCRC
self.assertIn( PolyKey(inputPoly, 0, dataSize, rev=reverse ), foundCRC )
def prepareInputData(self, dataSamplesList, dataSize, crcSize, poly,
initReg, xorVal):
inputData = InputData([], dataSize, crcSize)
for item in dataSamplesList:
crc = self.crcProc.calculateCRC(item, dataSize, poly, crcSize,
initReg, xorVal)
inputData.numbersList.append((item, crc))
return inputData
def test_findCommonInput_crc8a(self):
dataList = []
crcFun = crcmod.predefined.mkCrcFun(
"crc-8") ## init: 0x0, xor: 0x0, poly: 0x107
data = 0xAB
crc = crcFun(intToASCII(data))
dataList.append((data, crc))
foundCRC = self.crcFinder.findCommonInput(InputData(dataList, 8, 8))
foundCRC = list(foundCRC)
# print "found:", foundCRC
self.assertIn(CRCKey(0x107, 0x0, 0x0, 0, 8, rev=False), foundCRC)
def test_execute_8_sample(self):
poly = 0x1D
initReg = 0x00
xorVal = 0x8F
dataSize = 56
crcSize = 8
dataList = [(0x0D00C0F0FFFFFF, 0x90), (0x0000C0F0FFFFFF, 0x76)]
inputParams = InputParams()
inputParams.data = InputData(dataList, dataSize, crcSize)
inputParams.crcSize = crcSize
inputParams.poly = poly
inputParams.xorVal = xorVal
results = self.solver.execute(inputParams, None)
# print "result:", results, len(results)
# print "data: ", inputParams.data.numbersList, len(inputParams.data.numbersList)
# print "result:", results.most_common(3), len(results)
self.assertEqual(len(results), 1)
self.assertIn(CRCKey(poly, initReg, xorVal, 0, dataSize, False, False),
results)