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-moinmoin-12.0-squeeze-x86-vmdk.zip.sig gpg: Signature made Tue Aug 21 11:57:28 UTC 2012 using RSA key ID A16EB94D gpg: Good signature from "Turnkey Linux Release Key For your convenience we also include file checksums: * sha1sum 7750ee03687ee9e4113f46a93ac1abcb44f0da84 * md5sum e27a215f26072809b0247512c40b4a26 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) iQEcBAABAgAGBQJQM3edAAoJEIXCXpWhbrlNSYEIAMYDstg68ti4e1gPyMPVheh1 y+sbWm5sZyfFZJ5ddpPANwziqJ+mFJVVnoL0bXDbwtRJEXSFNM7c3XGoxGcHDBGE TLAYzt351tuc7wvef8DksJsRHJVGqZizmItnaQ/azwLIHyH3OP9KFmwO7rp0bVXb l17FJG6fWSKkuQWHNdVmv5A0DWrCSqbGe9fNFwx2JxK5/TQZO646zX2XhM0kzF2g vgJ10JGKxeYQybYqeimvjG6YbMXPxUrx9PMmko97gm8fh3UuASI47Vti+8VBAj5y mrBEZ8aiM1BJRioVoJwIQM4VB1oOIWpkiJoLxZyCDy3+d5IbRs46Ve0eZ3e8Zz0= =qc7J -----END PGP SIGNATURE-----