Encyclopedia > Rsync algorithm

  Article Content

Rsync algorithm

Rsync algorithm - an algorithm that rsync file transfer protocol and utility use.

The destination file is split into chunks, each of which is computed two checksums: a cryptographic hash[?] and a rolling checksum. The rolling checksum has the property that if bytes n and n+k are known, the checksum of bytes n+1 to n+k can be computed from these and the checksum of bytes n to n+k-1 without knowing the intermediate bytes. The rolling checksum is computed for all chunk-sized contiguous blocks of the source file; any that match a destination chunk checksum are computed the cryptographic hash. All parts of the source file which don't match any chunk in the destination are transferred, and the file is reassembled.

See also:



All Wikipedia text is available under the terms of the GNU Free Documentation License

 
  Search Encyclopedia

Search over one million articles, find something about almost anything!
 
 
  
  Featured Article
Dynabee

... the spinning mass and it rests in a little groove inside the wrist exerciser device, which almost completely covers the gyroscope inside it, except for a small round opening ...

 
 
 
This page was created in 22.2 ms