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Chunk seed is generated per /repository/

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This commit is contained in:
Gregor Kleen 2018-01-09 18:17:46 +01:00 committed by Mike Walters
parent b602612a40
commit 183966549f
1 changed files with 3 additions and 3 deletions
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6
docs/internals/data-structures.rst
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@ -593,9 +593,9 @@ can be used to tune the chunker parameters, the default is:
- HASH_WINDOW_SIZE = 4095 [B] (`0xFFF`)
The buzhash table is altered by XORing it with a seed randomly generated once
for the archive, and stored encrypted in the keyfile. This is to prevent chunk
size based fingerprinting attacks on your encrypted repo contents (to guess
what files you have based on a specific set of chunk sizes).
for the repository, and stored encrypted in the keyfile. This is to prevent
chunk size based fingerprinting attacks on your encrypted repo contents (to
guess what files you have based on a specific set of chunk sizes).
For some more general usage hints see also ``--chunker-params``.