This signature file may be used to cryptographically verify file integrity, like this:: $ gpg --keyserver hkp://keyserver.ubuntu.com --recv-keys 0xA16EB94D $ gpg --list-keys 0xA16EB94D pub 2048R/A16EB94D 2008-08-15 [expires: 2023-08-12] uid Turnkey Linux Release Key $ gpg --verify turnkey-tracks-13.0-wheezy-amd64-ovf.zip.sig gpg: Signature made Wed Oct 16 10:37:01 UTC 2013 using RSA key ID A16EB94D gpg: Good signature from "Turnkey Linux Release Key" For your convenience we also include file checksums: * sha1sum e8e8d710f6f579130c4a0d4464a3a9846536f5a0 * md5sum 53c36f565351d6ebb129b46bea62af5f You can calculate these on your end and compare to check for errors, but cryptographic verification is recommended for security reasons. -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.12 (GNU/Linux) iQEcBAABAgAGBQJSXmw9AAoJEIXCXpWhbrlNGM4IANEJBCz2HJMCPDmdCL9Lsd/A meRIygz+5ugzSKF2CY/0ILyax/9YOhawEFjhmEuE+0NlT8knZ8Jshpo12PSp6Pv8 uanMu9ajEh1cjBZtFYidPTuR7fk9WkHv1i0jfdBqQwJyHeN6uQbJD52bNCsxOH0R r6GvmlB6JWCW6VQYIMo+6pIwR320Bxco7dVDuB6gNVd9q3TXvcH+FMqLLYT7JKJZ KgP5pZmzus4HpNlZXSmcGJgFARTj1vmY9v7ZDHR/aQbxFJzSmPn/fSU+okIJnqss dYuUUcC/AOd3MzHa2jBFBSXDxDJAUt8INzRrrDZGzF35f8/fp8X1+GknzjAb6X8= =4NQe -----END PGP SIGNATURE-----