Mercurial Repositories > eric / file comparison
comparison: Utilities/crypto/py3AES.py
Utilities/crypto/py3AES.py
- changeset 6188
- 5a6ae3be31e6
- parent 6048
- 82ad8ec9548c
- child 6645
- ad476851d7e0
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| 6187:2cc7e3629784 | 6188:5a6ae3be31e6 |
|---|---|
| 287 @param a first factor (byte) | 287 @param a first factor (byte) |
| 288 @param b second factor (byte) | 288 @param b second factor (byte) |
| 289 @return result (byte) | 289 @return result (byte) |
| 290 """ | 290 """ |
| 291 p = 0 | 291 p = 0 |
| 292 for counter in range(8): | 292 for _counter in range(8): |
| 293 if b & 1: | 293 if b & 1: |
| 294 p ^= a | 294 p ^= a |
| 295 hi_bit_set = a & 0x80 | 295 hi_bit_set = a & 0x80 |
| 296 a <<= 1 | 296 a <<= 1 |
| 297 # keep a 8 bit | 297 # keep a 8 bit |
| 342 @param nbr number of positions to shift (integer) | 342 @param nbr number of positions to shift (integer) |
| 343 @param isInv flag indicating an inverse operation (boolean) | 343 @param isInv flag indicating an inverse operation (boolean) |
| 344 @return modified state (bytearray) | 344 @return modified state (bytearray) |
| 345 """ | 345 """ |
| 346 state = state[:] | 346 state = state[:] |
| 347 for i in range(nbr): | 347 for _ in range(nbr): |
| 348 if isInv: | 348 if isInv: |
| 349 state[statePointer:statePointer + 4] = \ | 349 state[statePointer:statePointer + 4] = \ |
| 350 state[statePointer + 3:statePointer + 4] + \ | 350 state[statePointer + 3:statePointer + 4] + \ |
| 351 state[statePointer:statePointer + 3] | 351 state[statePointer:statePointer + 3] |
| 352 else: | 352 else: |
