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-torrentserver-12.1-squeeze-amd64-vmdk.zip.sig gpg: Signature made Tue Jun 4 16:33:50 UTC 2013 using RSA key ID A16EB94D gpg: Good signature from "Turnkey Linux Release Key" For your convenience we also include file checksums: * sha1sum 28d2817d311cef5e8d07f9d1dd0f823299fc3e5e * md5sum 7187ee28971289a24aebc2dc392bd2a2 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 v1.4.10 (GNU/Linux) iQEcBAABAgAGBQJRrhblAAoJEIXCXpWhbrlNqiEIAMR37a292p8VzLH8pdG/DnIz joNKJNvbHUFJh91Q1FebG6dLXppHAdeGqU/Eb0f7DjwXefeaJCGQCzwEgJQbwLKn xfSIh3KrOWP97ashfwWhIE3CoNZ8x1Nv+sg46VycI6B18rtsl7StmPXvoBacpsum /l1CyN9MPj8kxk0EMZtvn8O35PrHNbd9Zopk2rghNpWPLblmCgtt6xBwHJbHdhqP Oj5+OVl8CYCanppQcMmvW7FUTFaDKuo/Hh8708WqHSobQx5mkvYBG73dUjd5BhmC 9ZzNvyKJC4azBXECLnMvbGcWLuLSLJ9dbCfhAIawQZfsBdBDB3/j82utdStpZP0= =oAT8 -----END PGP SIGNATURE-----