ATTENTION: The new home of the Digital Forensics Wiki is at https://forensicswiki.xyz/. Yeah, it's a silly name, but it was cheap.
This wiki will be going offline permanently in the near future. An exact date will be announced soon. Thank you for being a part of this community.
If you wish to work on the new forensicswiki, please join the Google Group forensicswiki-reborn
Piecewise hashing is a hashing technique to divide an input into chunks and hash each chunk separately. It was invented by Nick Harbour in dcfldd to improve the reliability of disk imaging. The theory was that if one chunk became corrupted, only the integrity of that chunk would be threatened. The piecewise hashes of the other chunks, which hadn't changed, could be used to prove their integrity.