ManTech offers the following utilities, created by CFIA team members, to the community free of charge.

md5deep

md5deep is a cross-platform set of programs used to compute MD5, SHA-1, SHA-256, Tiger, or Whirlpool message digests on an arbitrary number of files. The programs run on Windows, Linux, Cygwin, *BSD, OS X, Solaris, and should run on most other platforms. md5deep is similar to the md5sum program found in the GNU Coreutils package, but has the following additional features:

• Recursive operation - md5deep is able to recursively examine an entire directory tree. That is, it can compute the MD5 for every file in a directory and for every file in every subdirectory.
  
• Time estimation - md5deep can produce a time estimate when it's processing very large files.
  
• Comparison mode - md5deep can accept a list of known hashes and compare them to a set of input files. The program can display either those input files that match the list of known hashes or those that do not match. Hashes sets can be drawn from the National Software Reference Library, iLook Investigator, Hashkeeper, md5sum, and other generic hash generating programs. Users are welcome to add functionality to read other formats too!
  
• Piecewise hashing - Hash input files in arbitrary blocks
  
• File type mode - md5deep can process only files of a certain type, such as regular files, block devices, etc.