This article contains details on validating the origin and integrity of the latest version of Nova

Nova 14 Checksum

The SHA256 checksum of the Nova 14.zip archive, available at https://download.panic.com/nova/Nova 14.zip is:

9b327a9e16101ba06b46291e4905718b6062df73642ad753cbbe9f213a468104

Validating the Checksum

1. Download Nova 14.zip
2. Run the following command in Terminal to compute the checksum of your copy:

$ shasum -a 256 ~/Downloads/Nova\ 14.zip

If the hash portion of the command output matches the checksum above:

9b327a9e16101ba06b46291e4905718b6062df73642ad753cbbe9f213a468104  /Users/panic/Downloads/Nova 14.zip

you can be sure that your copy of the download is identical to the version on our website.

Unfortunately, validating the checksum alone does not guarantee that the contents of Nova 14.zip haven’t changed since we posted it*. However, with one extra step you can also determine with certainty that the checksum above, and therefore the contents of the ZIP, originated from Panic.

*Why not? In the very unlikely circumstance that a malicious actor replaced the ZIP archive on our website and modified the contents of this article using a new SHA256 hash, the checksum could still validate.

Nova 14 Checksum Signature

Using our public key, we have PGP-signed the SHA256 checksum from above:

-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA512

9b327a9e16101ba06b46291e4905718b6062df73642ad753cbbe9f213a468104
-----BEGIN PGP SIGNATURE-----

iQEzBAEBCgAdFiEE6i1R0iW3pPNCW77Iq26O7ibMLj0FAmpWkVQACgkQq26O7ibM
Lj1ySQf9FoXSoQJdDnJPqQX+b2CCdIqrhPtG6S3JWbdlbltx7yJtfnueWbfFL152
XcH/q+O8EIqp8qnTQK8YBj2LTQtRHf8YwIbqRrw97YqPj/WN/szyMYhECkWo1suR
BuqlOd3yh3yNrkKm6efoF4ft+zVRdr/PiQxYN4NHgTcL+ATZDw3AE74snem6vngu
yZXzUAdK8YqoM0pH4Qy8yaPsLNvIl7heDaZS/DfxKDQcmEHT0u+Q19ObLONqQjHA
KiAxI2Nl7RwjxoAnPm80uYkI2+ZhyXF8Mz6aUA54L34E0LWWKBPxIavnJa1psBfw
qSrDJ3LC2gDAVCNoUdmJ1co5JAPZvg==
=jtmz
-----END PGP SIGNATURE-----

Validating the Signature

1. Follow these instructions to install GnuPG
2. Open your terminal
3. Import Panic’s public key using gpg --import
4. Copy the entire PGP message above, including -----BEGIN PGP MESSAGE----- and -----END PGP MESSAGE-----
5. Use the echo "<message" | gpg --verify - command to verify the PGP message copied above

Most importantly, GnuPG should indicate that the message was signed by Panic:

Additionally, the resulting Signed Text should match our original checksum:

9b327a9e16101ba06b46291e4905718b6062df73642ad753cbbe9f213a468104

If both items match, you can be sure that the checksum in this article originated from Panic.

Putting it all together

By using two factors of validation:

• A checksum which ensures that your copy of Nova 14.zip is identical to the copy on our website
• A PGP signature which ensures that the checksum originated from Panic

you can be sure that you are installing the release that we originally posted.

Support

We are more than happy to answer questions or help provide any guidance you might need to validate the checksum and signature for this release. Please email us, nova@panic.com.