Mercurial Repositories > eric / file comparison
comparison: eric6/Utilities/crypto/py3AES.py
eric6/Utilities/crypto/py3AES.py
- changeset 8235
- 78e6d29eb773
- parent 8220
- 006ee31b4835
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| 8234:fcb6b4b96274 | 8235:78e6d29eb773 |
|---|---|
| 310 @param state state to be worked on (bytearray) | 310 @param state state to be worked on (bytearray) |
| 311 @param isInv flag indicating an inverse operation (boolean) | 311 @param isInv flag indicating an inverse operation (boolean) |
| 312 @return modified state (bytearray) | 312 @return modified state (bytearray) |
| 313 """ | 313 """ |
| 314 state = state[:] | 314 state = state[:] |
| 315 if isInv: | 315 getter = self.__getSBoxInvert if isInv else self.__getSBoxValue |
| 316 getter = self.__getSBoxInvert | |
| 317 else: | |
| 318 getter = self.__getSBoxValue | |
| 319 for i in range(16): | 316 for i in range(16): |
| 320 state[i] = getter(state[i]) | 317 state[i] = getter(state[i]) |
| 321 return state | 318 return state |
| 322 | 319 |
| 323 def __shiftRows(self, state, isInv): | 320 def __shiftRows(self, state, isInv): |
| 387 @param column column to be worked on (bytearray) | 384 @param column column to be worked on (bytearray) |
| 388 @param isInv flag indicating an inverse operation (boolean) | 385 @param isInv flag indicating an inverse operation (boolean) |
| 389 @return modified column (bytearray) | 386 @return modified column (bytearray) |
| 390 """ | 387 """ |
| 391 column = column[:] | 388 column = column[:] |
| 392 if isInv: | 389 mult = [14, 9, 13, 11] if isInv else [2, 1, 1, 3] |
| 393 mult = [14, 9, 13, 11] | |
| 394 else: | |
| 395 mult = [2, 1, 1, 3] | |
| 396 cpy = column[:] | 390 cpy = column[:] |
| 397 g = self.__galois_multiplication | 391 g = self.__galois_multiplication |
| 398 | 392 |
| 399 column[0] = ( | 393 column[0] = ( |
| 400 g(cpy[0], mult[0]) ^ g(cpy[3], mult[1]) ^ | 394 g(cpy[0], mult[0]) ^ g(cpy[3], mult[1]) ^ |
| 632 @param mode mode of operation (0, 1, 2) | 626 @param mode mode of operation (0, 1, 2) |
| 633 @return extracted bytes (bytearray) | 627 @return extracted bytes (bytearray) |
| 634 """ | 628 """ |
| 635 if end - start > 16: | 629 if end - start > 16: |
| 636 end = start + 16 | 630 end = start + 16 |
| 637 if mode == self.ModeOfOperation["CBC"]: | 631 ar = (bytearray(16) if mode == self.ModeOfOperation["CBC"] |
| 638 ar = bytearray(16) | 632 else bytearray()) |
| 639 else: | |
| 640 ar = bytearray() | |
| 641 | 633 |
| 642 i = start | 634 i = start |
| 643 j = 0 | 635 j = 0 |
| 644 while len(ar) < end - start: | 636 while len(ar) < end - start: |
| 645 ar.append(0) | 637 ar.append(0) |
