Hash Values

To guarantee integrity, hash values should be stored.

• Hash blocks of small size to prevent a single error to invalidate all drive images.

  • e.g. the same size as the acquisition block.

• In a RAW file; hash values are stored in a separate file.

• It is always recommended to do a digital signature on the hash values files.

  • Why do you think this is good practice?

Digital signatures.

• The best tool is GnuPG.

• If possible, use also a time-stamping server.