Coda 2 Release Integrity

This article contains details on validating the origin and integrity of the latest version of Coda 2

Coda 2.6.6 Checksum

The SHA256 checksum of the Coda 2.6.6.zip archive, available at https://download.panic.com/coda/Coda 2.6.6.zip is:

7fa6e309bf511ed147521be4d67b0bc369be06b514dca9cc415ee927ac6d15ea

Validating the Checksum

  1. Download Coda 2.6.6.zip
  2. Run the following command in Terminal to compute the checksum of your copy:
$ shasum -a 256 ~/Downloads/Coda\ 2.6.6.zip

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

7fa6e309bf511ed147521be4d67b0bc369be06b514dca9cc415ee927ac6d15ea  /Users/panic/Downloads/Coda 2.6.6.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 Coda 2.6.6.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.

Coda 2.6.6 Checksum Signature

Using our public profile on Keybase, we have PGP-signed the SHA256 checksum from above:

-----BEGIN PGP MESSAGE-----
Comment: https://keybase.io/download
Version: Keybase Go 1.0.23 (darwin)

xA0DAAoBq26O7ibMLj0By+F0AOIAAAAA5jdmYTZlMzA5YmY1MTFlZDE0NzUyMWJl
NGQ2N2IwYmMzNjliZTA2YjUxNGRjYTljYzQxNWVlOTI3YWM2ZDE1ZWEAwsBcBAAB
CgAQBQJZMcxACRCrbo7uJswuPQAAMUMIAAaSz/kyw0e3563sAhcw0AjU/+A3x1Dq
qbwM7uiNn8wyLo23JD4XJL9ZJw3APeVpl60VP08PpyJ8PRWZyQSWX5PU4gVQhXMo
QMJxz5ewnDHZR3ZBKm4R0Lh3GM4Aj5oQ3bBEYsvIcxbxCa9MKY2idSF0EdJgEb7P
B4hwLzrIP0Gir8PJLFszgp/pmKRthg3zZx9T8mqlxgQcyAroxUo2SUG+OSc5f1y7
ASOM1fOt3Bj8LmC0GPibLses3iTSWzguqnZbMVNc7v1C6CFv6j0Cy9pz8fZkmTpv
5C+vrLz6y/GYLxmvHgP06SfBHNU7F8+mAg69FcoiCnvDb28LXR2YaSo=
=A1tz
-----END PGP MESSAGE-----

Validating the Signature

  1. Copy the entire PGP message above, including -----BEGIN PGP MESSAGE----- and -----END PGP MESSAGE-----
  2. Paste the contents into the Message to verify box on Keybase
  3. Click Verify

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

'Signed by panic' on Keybase

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

7fa6e309bf511ed147521be4d67b0bc369be06b514dca9cc415ee927ac6d15ea

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 Coda 2.6.6.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, coda@panic.com.

Last updated June 5, 2017