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use cipher.block_count()

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there are some more places where it is used.
This commit is contained in:
Thomas Waldmann 2016-08-30 04:42:31 +02:00
parent de0707d3dd
commit f76f42c2a0
2 changed files with 4 additions and 4 deletions
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2
src/borg/crypto/key.py
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@ -358,7 +358,7 @@ class AESKeyBase(KeyBase):
def encrypt(self, chunk):
data = self.compressor.compress(chunk)
self.nonce_manager.ensure_reservation(num_aes_blocks(len(data)))
self.nonce_manager.ensure_reservation(self.cipher.block_count(len(data)))
return self.cipher.encrypt(data, header=self.TYPE_STR, aad_offset=1)
def decrypt(self, id, data, decompress=True):

6
src/borg/testsuite/key.py
View file

@ -13,7 +13,7 @@
from ..crypto.key import ID_HMAC_SHA_256, ID_BLAKE2b_256
from ..crypto.key import TAMRequiredError, TAMInvalid, TAMUnsupportedSuiteError, UnsupportedManifestError
from ..crypto.key import identify_key
from ..crypto.low_level import bytes_to_long, num_aes_blocks
from ..crypto.low_level import bytes_to_long
from ..crypto.low_level import IntegrityError as IntegrityErrorBase
from ..helpers import IntegrityError
from ..helpers import Location
@ -126,7 +126,7 @@ def test_keyfile(self, monkeypatch, keys_dir):
assert key.extract_nonce(manifest2) == 1
iv = key.extract_nonce(manifest)
key2 = KeyfileKey.detect(self.MockRepository(), manifest)
assert bytes_to_long(key2.cipher.next_iv(), 8) >= iv + num_aes_blocks(len(manifest) - KeyfileKey.PAYLOAD_OVERHEAD)
assert bytes_to_long(key2.cipher.next_iv(), 8) >= iv + key2.cipher.block_count(len(manifest) - KeyfileKey.PAYLOAD_OVERHEAD)
# Key data sanity check
assert len({key2.id_key, key2.enc_key, key2.enc_hmac_key}) == 3
assert key2.chunk_seed != 0
@ -199,7 +199,7 @@ def test_passphrase(self, keys_dir, monkeypatch):
assert key.extract_nonce(manifest2) == 1
iv = key.extract_nonce(manifest)
key2 = PassphraseKey.detect(self.MockRepository(), manifest)
assert bytes_to_long(key2.cipher.next_iv(), 8) == iv + num_aes_blocks(len(manifest) - PassphraseKey.PAYLOAD_OVERHEAD)
assert bytes_to_long(key2.cipher.next_iv(), 8) == iv + key2.cipher.block_count(len(manifest) - PassphraseKey.PAYLOAD_OVERHEAD)
assert key.id_key == key2.id_key
assert key.enc_hmac_key == key2.enc_hmac_key
assert key.enc_key == key2.enc_key