Using Hash Matching and MD5 Hashes

CD/DVD Inspector can compute MD5 hash values for either selected files or all files in a session by selecting any file, folder, or session and selecting the menu item Calculate MD5 Hash in the File menu. This will populate the MD5 Hash value column in the file Details display.

CD/DVD Inspector has the capability of loading hash sets and using them to match against files on the media being examined. If you have a set of known files being checked for, this can make the process significantly faster and more productive.

A hash set is a comma-separated-value (CSV) format file with following fields:

• File identifier (numeric)

• Hash set identifier (numeric)

• File name (ignored by CD/DVD Inspector)

• Directory path (ignored by CD/DVD Inspector)

• Hash value

• File size (ignored by CD/DVD Inspector)

• Date modified (mm/dd/yy) (ignored by CD/DVD Inspector)

• Time modified (ignored by CD/DVD Inspector)

• Time zone (ignored by CD/DVD Inspector)

• Date accessed (mm/dd/yy) (ignored by CD/DVD Inspector)

• Time accessed (ignored by CD/DVD Inspector)

Any of the fields following the hash value can be omitted.

The menu selection Load Hash Set in the Pro Tools menu is used to load a hash set into memory for comparison. This is done after the initial examination of a disc and the comparison is done immediately. If hash values have not been computed for the files on the disc being examined yet, the user will be prompted to do this before proceeding.

After hash values have been computed, a...