Command library / Get-FileHash

Compute a file's cryptographic hash

Calculates a file's hash, SHA256 by default, so you can check that a download matches its published checksum, or record evidence and later prove it hasn't changed. Changing even one bit of the file produces a completely different hash.

Usage

Options and flags

• -Path FILE

  the file(s) to hash; wildcards allowed (first positional parameter)

• -Algorithm NAME

  SHA256 (the default), SHA384, SHA512, SHA1 or MD5

Examples

• Get-FileHash setup.exe

  The file's SHA256 hash.

• Get-FileHash tools.zip -Algorithm SHA512

  A SHA512 hash, to match a SHA512 checksum.

• Get-FileHash C:\Evidence\*

  A hash for every file in the folder at once.

Common mistakes

Related commands