CHECKSUM and Verify Instructions
Once you have downloaded an image, verify it for security and integrity. To verify your image, start by downloading the proper CHECKSUM file into the same directory as the image you downloaded.
Next, import Fedora's GPG key(s):
$ curl https://getfedora.org/static/fedora.gpg | gpg --import
You can verify the details of the GPG key(s) here.
Now, verify that the CHECKSUM file is valid:
$ gpg --verify-files *-CHECKSUM
The CHECKSUM file should have a good signature from one of the following keys:
9867C58F- Fedora 35
45719A39- Fedora 34
9570FF31- Fedora 33
DBBDCF7C- IOT 2019
Finally, now that the CHECKSUM file has been verified, check that the image's checksum matches:
$ sha256sum -c *-CHECKSUM
If the output states that the file is valid, then it's ready to use!