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-bugzilla-13.0-wheezy-amd64.iso.sig gpg: Signature made Tue Oct 15 14:46:41 UTC 2013 using RSA key ID A16EB94D gpg: Good signature from "Turnkey Linux Release Key" For your convenience we also include file checksums: * sha1sum ae78e636ddb681c29e50a353f2fd0d9b20245222 * md5sum 96e98ec7962315ce07b5385470476301 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) iQEcBAABAgAGBQJSXVVGAAoJEIXCXpWhbrlN2M8H/2rJYjsduFvHeHbG+g8hNi++ EkF6Jo1OFkEaHUzpOp6RWcuY2v4KbGbVhyZ3jXB3hCk/TJ4hRpS40M+qGOVY/FuJ eXZyfjgqNHYIP8i3QrSYNwzKsYJl/QQCv2fCJ25vqvAt7jlL4HWo2lriqda4bSio BXsDG55HOfaTQOIaWaWgzzgrVUrNOj05cFy4rba3aaLLCAPpyR1/IGLVTefJCEpf EtaXappY164uKY2HLqwnzPBI4ilo8TLEX3lkRLIt12F5JZZmKPC6bmqSUgLa5xad kqfRJyk8uogpGr7GoG2I6nTo35M38+EYzIAhyqWzUlEHAHAZaM/Bbu25SuafSgw= =kVAg -----END PGP SIGNATURE-----