This article contains details on validating the origin and integrity of the latest version of Transmit 5

Transmit 5.11.2 Checksum

The SHA256 checksum of the Transmit 5.11.2.zip archive, available at https://download.panic.com/transmit/Transmit 5.11.2.zip is:

90eba6375d37f0cc60cfc33b9bc853ee7fb6cc231621cfb656087d32b1a831fb

Validating the Checksum

1. Download Transmit 5.11.2.zip
2. Run the following command in Terminal to compute the checksum of your copy:

$ shasum -a 256 ~/Downloads/Transmit\ 5.11.2.zip

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

90eba6375d37f0cc60cfc33b9bc853ee7fb6cc231621cfb656087d32b1a831fb  /Users/panic/Downloads/Transmit 5.11.2.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 Transmit 5.11.2.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.

Transmit 5.11.2 Checksum Signature

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

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

90eba6375d37f0cc60cfc33b9bc853ee7fb6cc231621cfb656087d32b1a831fb
-----BEGIN PGP SIGNATURE-----

iQEzBAEBCgAdFiEE6i1R0iW3pPNCW77Iq26O7ibMLj0FAmkJj64ACgkQq26O7ibM
Lj0OKAf/ehteyaRx9wtWwK+4WrSuC3K2s0UdrRw62N6urEGVcUpMLhqQwIE4VwhD
ledjHP0uMKqyWELuAE9Oj7KUncCkmk5Nk6oJAh2cDU2JnjCQRieNawYwJrefCF0n
0X0PW3ti2PJ+9fRRLd2dN28HtI7HhgCXH7oHqw0VQMptfmRwXLP28HzCbOqQzmW+
Xba2OeE36VjDeWcDBnLF1m1CgEFXtpSu2S4YeDI8eO70sZcKXiZm3JFGPP7U9IL7
YpL53u41Y+c1hzik46B47jmxOQ1J9tPq2FiM+TMO/8W7Vv7swYgTZcsPOnG+A5PL
TLf3B7FAk6YMPzp53pYx/kLIrODxUA==
=tfzu
-----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:

90eba6375d37f0cc60cfc33b9bc853ee7fb6cc231621cfb656087d32b1a831fb

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 Transmit 5.11.2.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, transmit@panic.com.