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-13.0-wheezy-i386.iso.sig gpg: Signature made Mon Oct 14 18:04:39 UTC 2013 using RSA key ID A16EB94D gpg: Good signature from "Turnkey Linux Release Key" For your convenience we also include file checksums: * sha1sum b588aef6785a822d19dd171808a2c0cde61647ee * md5sum 3acbfecd7764800e94aaa22d1d6f5ec1 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) iQEcBAABAgAGBQJSXDItAAoJEIXCXpWhbrlNeXQIAK5HCQum/vpOghO85brDQW2J zzTBnDiCZZsC7K6beQ62mfogfTpB/mtP5pK2KUUqjoAfgcAogh8d/0V56dhjf0sx HIa1XwVZtjdmtAwdg9RtkTfQBzrr+x/vEuNo/5x7+fwxzCSiHehFgN8AjCkCRGeQ n7VLDbIKcXeXQMcXqYrSrHuWLOGa+bj8B+Z2miqtepo+uDMjMYYjmlwcaTteFlFV 9OV7n28jDooO7FoOMs2mNr1ro1rFGGL+VhFI/533wwW1hw0dPyqz68PIfdNw0Gv3 apPWvavIxzfLQH8mGKdJ6mPQUcFwtq9BN+Y0ym8YZZJ6hU7auxhNH8ulsBS8Opk= =b+Fi -----END PGP SIGNATURE-----