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-openvpn-13.0rc2-wheezy-amd64.iso.sig gpg: Signature made Thu Aug 29 15:06:36 UTC 2013 using RSA key ID A16EB94D gpg: Good signature from "Turnkey Linux Release Key" For your convenience we also include file checksums: * sha1sum b841cedb056f9a35bc0f41b16b5fcba20597d7d3 * md5sum 09998864677ffbb10c813502f925d6d7 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) iQEcBAABAgAGBQJSH2N1AAoJEIXCXpWhbrlNoL8IAKfSVzBqOMQ9C6FzFJKSfJU+ TkGqQJIa94hmpK/BRij//zTZrjt3I3eMdSDXp+WNmhWomcUijNhjehrFZk8rdjkX Rm4XndcFuFJOMjj1EpilVy62mu7GyR0fXnSKokK7PfQ+utp3bAaA+R36o4ZUIUtA TjnvBSeQgUHJr316zQlFIgcjEohWZF8Gw4Fid6CR/zKsmnUsVDdmmAeT5/WMnYSf 55iyUtRbKDSNBwfJketMKWYnhjowdQafwjZHQYQcZyzha/Nn4sgv53v6pp1Da/d5 QSvxxxixccRXWtgM5WvhsVe4mAJ5Sz3q86UNvDG+H4cUYCcvpyuVuNlV3qVJuCU= =hZat -----END PGP SIGNATURE-----