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docoll
2012 Oct 02
2
rsync hashing / collision handling?
Based on the published rsync algorithm
(pdf<http://cs.anu.edu.au/techreports/1996/TR-CS-96-05.pdf>),
it appears to filter definitely different blocks from possibly unchanged
blocks using weak hashing, then applying strong hashing to double-check the
rest of the file for true differences. MD4 and MD5 do experience
collisions, so isn't rsync fast at the risk of being inaccurate? If I can