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A hash-based DOS attack on BtrfsA hash-based DOS attack on BtrfsPosted Dec 14, 2012 17:35 UTC (Fri) by dakas (guest, #88146)In reply to: A hash-based DOS attack on Btrfs by davidescott Parent article: A hash-based DoS attack on Btrfs
Uh, with a CRC salting a whole directory with the same salt will cause exactly the same collisions as without salt. The salt will just cause the final CRC to be XORed with a constant.
A CRC is not a cryptographic hash. Salting is useless, and identical prefixes have identical impact on the result.
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A hash-based DOS attack on Btrfs Posted Dec 14, 2012 21:56 UTC (Fri) by masoncl (subscriber, #47138) [Link]
I should have made it clear that salting only makes a difference if we add an optional second hash.
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