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 debian-7-turnkey-joomla15_13.0-1_i386.ova.sig gpg: Signature made Wed Oct 16 07:25:49 UTC 2013 using RSA key ID A16EB94D gpg: Good signature from "Turnkey Linux Release Key" For your convenience we also include file checksums: * sha1sum 16ab93b93be25a9a145551cb9b546a54aed25de2 * md5sum ed980aa1fe373d3cc936fbb649872963 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) iQEcBAABAgAGBQJSXj90AAoJEIXCXpWhbrlN+VsIAIXPaFYoTipir7NosDdHmhf4 BrRnFedumbQcBJEw9Mcs9Ecv/bZhHpVY4b96kOz0hf7lr4XrZuYtCDAq5s0+Z+AG q5RSnbrCK8XCGlOe6DEZ9w4HC/Bn0YJTYIEbBKe+LbsK72EyjukkfzRCC0DAhySP NUzioYtepFlX1kyqjbNCfChAwKzqfnoydMzzQ8qEoojJ0B/LZvx4gvAeswvmdjjH YmqcZSZeubfND2OWUrTxdncOXhsYTQVPi1BjpQLL6SMcpVq/lpy7RSu20K7w+2qu Pi3Wl/wImDiq5bq3E3RF8QjRy4tyFJN8D1oflYl6D37Fxa4E2TFWtt5aD85peQs= =4LHG -----END PGP SIGNATURE-----