<p>Hash values are used to authenticate and verify the integrity of data sets. They are unique and act as a digital fingerprint for an electronic file. Changing a single character in a file changes the hash value. This makes hash values a good indicator of whether evidence has been tampered with. Hash values are used to: Identify and filter duplicate files Verify that a forensic image or clone was captured successfully Authenticate and verify the integrity of data sets Sections 65A and 65B of the Evidence Act provide provisions for evidence relating to the admissibility of electronic records</p>