... (WIP)

<note important> **This page explains how to verify their integrity and authenticity.** </note>

====== Preparation ======

  - Create a directory called **live_image** in your home directory.
  - Move the live image you downloaded in this directory.
  - Download the following files and move them into the **live_image** directory.

===== Hyperbola live image =====

{| border="0" style="border-collapse:collapse; width: 100%; text-align: center; color:#262627; background-color:#f8f9fa;"
! style="background-color:#eaecf0"  colspan="1" | File
! style="background-color:#eaecf0"  colspan="1" | Description
|-
| [[https://repo.hyperbola.info/other/live_images/gnu-plus-linux-libre/hyperbola-milky-way-latest/hyperbola-milky-way-v0.3.1-dual.iso.sha512 | hyperbola-milky-way-v0.3.1-dual.iso.sha512]]
| Contains the SHA512 sums to check the integrity of the Hyperbola live image.
|-
| [[https://repo.hyperbola.info/other/live_images/gnu-plus-linux-libre/hyperbola-milky-way-latest/hyperbola-milky-way-v0.3.1-dual.iso.sha512.sig | hyperbola-milky-way-v0.3.1-dual.iso.sha512.sig]]
| Signed by the Hyperbola team to check the authenticity of the sha512sum file of the Hyperbola live image.
|}

===== Hypertalking live image =====

{| border="0" style="border-collapse:collapse; width: 100%; text-align: center; color:#262627; background-color:#f8f9fa;"
! style="background-color:#eaecf0"  colspan="1" | File
! style="background-color:#eaecf0"  colspan="1" | Description
|-
| [[https://repo.hyperbola.info/other/live_images/gnu-plus-linux-libre/hypertalking-milky-way-latest/hypertalking-milky-way-v0.3.1-dual.iso.sha512 | hypertalking-milky-way-v0.3.1-dual.iso.sha512]]
| Contains the SHA512 sums to check the integrity of the Hypertalking live image.
|-
| [[https://repo.hyperbola.info/other/live_images/gnu-plus-linux-libre/hypertalking-milky-way-latest/hypertalking-milky-way-v0.3.1-dual.iso.sha512.sig | hypertalking-milky-way-v0.3.1-dual.iso.sha512.sig]]
| Signed by the Hyperbola team to check the authenticity of the sha512sum file of the Hypertalking live image.
|}

Your **live_image** directory should now contain 3 files: Your live image and the sha512 file and the signed one, like this:

  * hyperbola-milky-way-v0.3.1-dual.iso
  * hyperbola-milky-way-v0.3.1-dual.iso.sha512
  * hyperbola-milky-way-v0.3.1-dual.iso.sha512.sig

===== Integrity check =====

To verify the integrity of your live image, generate its SHA512 sum and compare it to the one found in the sha512sum file.

In most GNU/Linux distributions the SHA512 sum can be generated by opening a terminal and running the following commands:

<code bash>
$ cd
</code>

<code bash>
$ cd live_image
</code>

<code bash>
$ sha512sum -b *.iso
</code>

The last command should show you the SHA512 sum of your live file. Compare it to the sha512sum file. If it match, you've successfully verified the integrity of your live image.

<note>
If you have <color #620BB9/#EEDDFF>coreutils</color> version 8.25 or newer, another way of checking the sum is to ask the sha512sum command to check the file against the sha512sum file, like this:

<code bash>
$ sha512sum -c hyperbola-milky-way-v0.3.1-dual.iso.sha512
</code>
</note>

===== Authenticity check =====

To verify the authenticity of the sha512sum file, we need to check the signature on the signed file.

**Import the Hyperbola signing key:**

<code bash>
$ gpg --keyserver pgp.mit.edu --recv-key "C92B AA71 3B8D 53D3 CAE6 3FC9 E697 4752 F970 4456"
</code>

<note>
If gpg complains about the key ID, try the following commands instead:

<code bash>
$ gpg --keyserver pgp.mit.edu --recv-key F9704456
</code>

<code bash>
$ gpg --list-key --with-fingerprint F9704456
</code>

Check the output of the last command, to make sure the fingerprint is **C92B AA71 3B8D 53D3 CAE6 3FC9 E697 4752 F970 4456**.
</note>

**Verify the authenticity of the sha512sum file, like this:**

<code bash>
$ cd
</code>

<code bash>
$ cd live_image
</code>

<code bash>
$ gpg --verify hyperbola-milky-way-v0.3.1-dual.iso.sha512.sig
</code>

The output of the last command should tell you that the file signature is 'good' and that it was signed with the following key: **F9704456**.

===== Acknowledgement =====

This wiki article is based on **Mint's download page**. We may have removed non-[[https://www.gnu.org/philosophy/free-system-distribution-guidelines.html|FSDG]] bits from it.