In FTK, what does "hashing" refer to?

In FTK, hashing refers to the process of generating a unique fixed-size string of characters from input data, which is used to verify the integrity of files. This unique representation, known as a hash, acts as a digital fingerprint for the data. When you hash a file, the same input will always produce the same hash output. This is crucial in forensic investigations because it allows examiners to confirm that a file has not been altered or corrupted by comparing the original hash value with a newly generated hash value from the file at a later point in time.

By using hashing, investigators can ensure the authenticity of evidence and maintain a chain of custody. If the hash values match, it indicates that the file is intact. If they do not match, it suggests that the file may have been changed after the hash was created. Thus, hashing is an essential tool for maintaining data integrity in forensic examinations.