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| author | Gaetan Leplus <gaetan.leplus@airbus.com> | 2019-07-05 16:16:19 +0200 |
|---|---|---|
| committer | Gaetan Leplus <gaetan.leplus@airbus.com> | 2019-07-05 16:16:19 +0200 |
| commit | 62433c71e25f157dd79ba10d81631ee4c67f8eb1 (patch) | |
| tree | 3ac352a3598fa444d45695dbb2b4cee63698ac57 /src/add_python/lilliput/ae_common.py | |
| parent | de5f3445b5d382237afc39869907957e65c8a91e (diff) | |
| parent | 75d7f59658539c699cdf9c7a3abdbead15aac199 (diff) | |
| download | lilliput-ae-implem-62433c71e25f157dd79ba10d81631ee4c67f8eb1.tar.xz | |
Merge remote-tracking branch 'origin/master' into fix-vhdltbc
Diffstat (limited to 'src/add_python/lilliput/ae_common.py')
| -rw-r--r-- | src/add_python/lilliput/ae_common.py | 10 |
1 files changed, 5 insertions, 5 deletions
diff --git a/src/add_python/lilliput/ae_common.py b/src/add_python/lilliput/ae_common.py index b94be1b..db14ec3 100644 --- a/src/add_python/lilliput/ae_common.py +++ b/src/add_python/lilliput/ae_common.py @@ -15,7 +15,7 @@ """Helper functions used in both Lilliput-I and Lilliput-II.""" -from .constants import BLOCK_BITS, BLOCK_BYTES +from .constants import BLOCK_BYTES from .helpers import xor from . import tbc @@ -48,11 +48,11 @@ def block_matrix_to_bytes(matrix): def pad10(X): zeroes = [0] * (BLOCK_BYTES-len(X)-1) - return zeroes + [0b10000000] + X + return X + [0b10000000] + zeroes def integer_to_byte_array(i, n): - return list(i.to_bytes(n, 'little')) + return list(i.to_bytes(n, 'big')) def _tweak_associated_data(t, i, padded): @@ -61,8 +61,8 @@ def _tweak_associated_data(t, i, padded): prefix = 0b0110 if padded else 0b0010 # Clear upper 4 bits and set them to prefix. - tweak[-1] &= 0b00001111 - tweak[-1] = prefix << 4 + tweak[0] &= 0b00001111 + tweak[0] |= prefix << 4 return tweak |