Quoted from http://jessekornblum.livejournal.com/295883.html:
This is an important update, which corrects a bug in the signature
generation code. Any ssdeep hashes created with version 2.10 should be
recomputed. The signatures are not wrong per se though, they are just not
as good as they should be"
* New Features
- Fuzzy Hashing engine re-written to be thread safe.
* Bug Fixes
- Able to handle long file paths on Win32.
- Fixed bug on comparing signatures with the same block size.
- Fixed crash on comparing short signatures.
- Fixed memory leak
ssdeep is a program for computing context triggered piecewise hashes (CTPH).
Also called fuzzy hashes, CTPH can match inputs that have homologies. Such
inputs have sequences of identical bytes in the same order, although bytes in
between these sequences may be different in both content and length.
