Coda 2 Release Integrity

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

Coda 2.6.9 Checksum

The SHA256 checksum of the Coda 2.6.9.zip archive, available at https://download.panic.com/coda/Coda 2.6.9.zip is:

9de300786284e8f9afd25d51aa5c1858d6c6e9d3248ee35ca0ec8f61155c8aeb

Validating the Checksum

  1. Download Coda 2.6.9.zip
  2. Run the following command in Terminal to compute the checksum of your copy:
$ shasum -a 256 ~/Downloads/Coda\ 2.6.9.zip

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

9de300786284e8f9afd25d51aa5c1858d6c6e9d3248ee35ca0ec8f61155c8aeb  /Users/panic/Downloads/Coda 2.6.9.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 2.6.9.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 2.6.9 Checksum Signature

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

-----BEGIN PGP MESSAGE-----
Version: Keybase Go 1.0.34 (darwin)
Comment: https://keybase.io/download

xA0DAAoBq26O7ibMLj0By+F0AOIAAAAA5jlkZTMwMDc4NjI4NGU4ZjlhZmQyNWQ1
MWFhNWMxODU4ZDZjNmU5ZDMyNDhlZTM1Y2EwZWM4ZjYxMTU1YzhhZWIAwsBcBAAB
CgAQBQJaAkjPCRCrbo7uJswuPQAA/FMIAIbi27W0sqc7snUo6k3KONgdZO/6+xvj
9au6XuOpPhmXuiwZjPvdaAxH6jl0pdckNEkv1epYFsdRDMpbIn7tbU17Vzrlc/i/
ikQFXF+c9kAJe3YK+SJ/hzokXgiyGpJqCqQRG+yHiEm4aJl9cja6JUC5DUrtdjUe
UkxwWuh11VyHOdeVJGQizrUGq1h/VoO9qqkyz3AD/eTEbPOAQtAq0H5reGX3lxp3
KDS63QxlSgqORL8OsO8xKpWZO9IbrtTHIvaUppqsFlHqz0TamPbs2Ttz+6QmLqoS
ITeR0d4xcPI5YCwAeXTJH0Mhq0vkjBZpl7udqxOAFb6/JFBRwNFRS/E=
=J4YT
-----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:

9de300786284e8f9afd25d51aa5c1858d6c6e9d3248ee35ca0ec8f61155c8aeb

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 2.6.9.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 February 13, 2018