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-twiki-13.0-wheezy-i386-vmdk.zip.sig gpg: Signature made Tue Oct 15 20:19:28 UTC 2013 using RSA key ID A16EB94D gpg: Good signature from "Turnkey Linux Release Key" For your convenience we also include file checksums: * sha1sum e02b162451ee5c218865e4223d9f75f033f04322 * md5sum ef5c69deac7261e5dd3bd1fe608ef8e0 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) iQEcBAABAgAGBQJSXaNIAAoJEIXCXpWhbrlNo1QH/34eD7a5iotRnv82T3//HhGn 7xHVYp5QpqKU24MsKtBFCz9vKdH1TEzrvdapV0T+ONDHUK7TlIIg6u0K2mWkLIyq gUT1l+8aTZSiVSPrMRNvz4gAnsWXhmkm7wmsxSVZUd2qeJFnzsdCapEM4JxJ1hbe tbtZLjILg6WTZn+uaxhQt+kuQlq4TzoQ0008qzAY0JxvWbHQMK1Qwe55OxCTnbyv gu0dxiDHU00rdGQOTXxIuFhUtr2RQTqBkd+rG6R9HDP84FHM0ggJ3OgCRCXJTfl0 u+YXarJx5VTrRTWns+ZENqrYCfH8nULBvSBDJM2ZexaGSrHqIYWnhdrdP64xnGk= =x5cb -----END PGP SIGNATURE-----