==Getting Signify==
These release files have been cryptographically signed using the "signify"
program. It is contained within OpenBSD, LibertyBSD and Bitrig.

In Debian testing (and derived distributions like Ubuntu and Linux Mint), the
program is called "signify-openbsd", and you can install it using the command
 $ sudo apt-get install signify-openbsd

For other GNU/Linux distributions, you can compile a signify program from source
https://github.com/aperezdc/signify

==Verifying the downloaded files==

To perform the verification, download the files SHA256, SHA256.sig and
libertybsd-61.pub. Then, check to make sure that the SHA256 sum matches
the file you downloaded. If you downloaded install61.iso, then depending on
your operating system, you will need to use one of the below commands to find
the checksum of your file:
$ sha256sum install61.iso
$ sha256 install61.iso

Check to make sure that this matches the checksum contained in SHA256.

Then, to verify that the signature is correct:
 $ signify -V -p libertybsd-61-base.pub -m SHA256