Mercurial Repositories > eric / file comparison
comparison: Utilities/crypto/py3AES.py
Utilities/crypto/py3AES.py
- changeset 3039
- 8dd0165d805d
- parent 3034
- 7ce719013078
- child 3060
- 5883ce99ee12
- child 3160
- 209a07d7e401
equal
deleted
inserted
replaced
| 3038:7fe9a53280bd | 3039:8dd0165d805d |
|---|---|
| 342 """ | 342 """ |
| 343 state = state[:] | 343 state = state[:] |
| 344 for i in range(nbr): | 344 for i in range(nbr): |
| 345 if isInv: | 345 if isInv: |
| 346 state[statePointer:statePointer + 4] = \ | 346 state[statePointer:statePointer + 4] = \ |
| 347 state[statePointer + 3:statePointer + 4] + \ | 347 state[statePointer + 3:statePointer + 4] + \ |
| 348 state[statePointer:statePointer + 3] | 348 state[statePointer:statePointer + 3] |
| 349 else: | 349 else: |
| 350 state[statePointer:statePointer + 4] = \ | 350 state[statePointer:statePointer + 4] = \ |
| 351 state[statePointer + 1:statePointer + 4] + \ | 351 state[statePointer + 1:statePointer + 4] + \ |
| 352 state[statePointer:statePointer + 1] | 352 state[statePointer:statePointer + 1] |
| 353 return state | 353 return state |
| 354 | 354 |
| 355 def __mixColumns(self, state, isInv): | 355 def __mixColumns(self, state, isInv): |
| 356 """ | 356 """ |
| 357 Private method to perform a galois multiplication of the 4x4 matrix. | 357 Private method to perform a galois multiplication of the 4x4 matrix. |
| 389 mult = [2, 1, 1, 3] | 389 mult = [2, 1, 1, 3] |
| 390 cpy = column[:] | 390 cpy = column[:] |
| 391 g = self.__galois_multiplication | 391 g = self.__galois_multiplication |
| 392 | 392 |
| 393 column[0] = g(cpy[0], mult[0]) ^ g(cpy[3], mult[1]) ^ \ | 393 column[0] = g(cpy[0], mult[0]) ^ g(cpy[3], mult[1]) ^ \ |
| 394 g(cpy[2], mult[2]) ^ g(cpy[1], mult[3]) | 394 g(cpy[2], mult[2]) ^ g(cpy[1], mult[3]) |
| 395 column[1] = g(cpy[1], mult[0]) ^ g(cpy[0], mult[1]) ^ \ | 395 column[1] = g(cpy[1], mult[0]) ^ g(cpy[0], mult[1]) ^ \ |
| 396 g(cpy[3], mult[2]) ^ g(cpy[2], mult[3]) | 396 g(cpy[3], mult[2]) ^ g(cpy[2], mult[3]) |
| 397 column[2] = g(cpy[2], mult[0]) ^ g(cpy[1], mult[1]) ^ \ | 397 column[2] = g(cpy[2], mult[0]) ^ g(cpy[1], mult[1]) ^ \ |
| 398 g(cpy[0], mult[2]) ^ g(cpy[3], mult[3]) | 398 g(cpy[0], mult[2]) ^ g(cpy[3], mult[3]) |
| 399 column[3] = g(cpy[3], mult[0]) ^ g(cpy[2], mult[1]) ^ \ | 399 column[3] = g(cpy[3], mult[0]) ^ g(cpy[2], mult[1]) ^ \ |
| 400 g(cpy[1], mult[2]) ^ g(cpy[0], mult[3]) | 400 g(cpy[1], mult[2]) ^ g(cpy[0], mult[3]) |
| 401 return column | 401 return column |
| 402 | 402 |
| 403 def __aes_round(self, state, roundKey): | 403 def __aes_round(self, state, roundKey): |
| 404 """ | 404 """ |
| 405 Private method to apply the 4 operations of the forward round in | 405 Private method to apply the 4 operations of the forward round in |
