mirror of https://github.com/borgbackup/borg.git
Prepare for future payload format change
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@ -8,11 +8,15 @@ from hashlib import sha256
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import zlib
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from attic.crypto import pbkdf2_sha256, get_random_bytes, AES, bytes_to_long, long_to_bytes, bytes_to_int, num_aes_blocks
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from attic.helpers import IntegrityError, get_keys_dir
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from attic.helpers import IntegrityError, get_keys_dir, Error
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PREFIX = b'\0' * 8
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class UnsupportedPayloadError(Error):
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"""Unsupported payload type {}. A newer version is required to access this repository.
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"""
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class HMAC(hmac.HMAC):
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"""Workaround a bug in Python < 3.4 Where HMAC does not accept memoryviews
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"""
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@ -37,7 +41,7 @@ def key_factory(repository, manifest_data):
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elif manifest_data[0] == PlaintextKey.TYPE:
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return PlaintextKey.detect(repository, manifest_data)
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else:
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raise Exception('Unkown Key type %d' % ord(manifest_data[0]))
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raise UnsupportedPayloadError(manifest_data[0])
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class KeyBase(object):
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