[[!meta title="Verify the ISO image using other operating systems"]]

Using Firefox

Instead of a cryptographic signature, this technique uses a cryptographic hash. We propose it because it's especially easy for Windows users.

  1. Install the MD5 Reborned Hasher extension for Firefox.

  2. Restart Firefox.

  3. Open the Downloads window from the menu Tools ▸ Downloads. MD5 Reborned Hasher only operates from the files that are appearing in the Downloads window of Firefox.

  4. If you are using Firefox 20 or later, MD5 Reborned Hasher is incompatible with the new Downloads window. To go back to a compatible layout of the Downloads window, do the following:

    1. Open a new tab in Firefox.
    2. Type about:config in the URL bar, then press Enter.
    3. Paste the following preference name into the search field: browser.download.useToolkitUI.
    4. Change the value of this preference to true, by doing right-click on the preference and choosing Toggle.
    5. Restart Firefox.
  5. If the ISO image does not appear in the list of recent downloads:

  6. Click on the Check Digest… link on the line of the Downloads window corresponding to the ISO image. If no Check Digest… link appear, then MD5 Reborned Hasher is not installed correctly.

  7. In the Check File window, choose a SHA256 hash type.

  8. Click on Generate Digest.

  9. Copy and paste the following hash for version [[!inline pages="inc/stable_i386_version" raw="yes"]] in the Enter checksum text box.

    [[!inline pages="inc/stable_i386_hash" raw="yes"]]
  10. When the hash is done generating, a result appears at the bottom of the window saying:

Using the cryptographic signature

GnuPG, a common free software implementation of OpenPGP has versions and graphical frontends for both Windows and Mac OS X. This also make it possible to check the cryptographic signature with those operating systems:

You will find on either of those websites detailed documentation on how to install and use them.

For Windows using Gpg4win

After installing Gpg4win, download Tails signing key:

[[!inline pages="lib/download_tails_signing_key" raw="yes"]]

[[Consult the Gpg4win documentation to import it|http://www.gpg4win.org/doc/en/gpg4win-compendium_15.html]]

Then, download the cryptographic signature corresponding to the ISO image you want to verify:

[[!inline pages="lib/download_stable_i386_iso_sig" raw="yes"]]

[[Consult the Gpg4win documentation to check the signature|http://www.gpg4win.org/doc/en/gpg4win-compendium_24.html#id4]]

For Mac OS X using GPGTools

After installing GPGTools, you should be able to follow the instruction for [[Linux with the command line|verify_the_iso_image_using_the_command_line]]. To open the command line, navigate to your Applications folder, open Utilities, and double click on Terminal.