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-phpbb-13.0-wheezy-amd64-xen.tar.bz2.sig gpg: Signature made Fri Nov 1 09:21:38 UTC 2013 using RSA key ID A16EB94D gpg: Good signature from "Turnkey Linux Release Key" For your convenience we also include file checksums: * sha1sum 7de9ba0714b57e24e35114d86c4c5eb9f9d61086 * md5sum b1e7b6727cf40838959a175037e679aa 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) iQEcBAABAgAGBQJSc3KbAAoJEIXCXpWhbrlNEj8IAKVZbcgt7hfzzf0qnOw3RZyS y7nWDnLy7IdbJeDrdzUv/0gcDdiqH5vT8ynqTlvYiA38eV8MIGJ5pSNSUR0CIwQX Bwlx/ywYsmGBtcTmTvPLntMaY5npo80ZyMs7zAUS4cJ7F9o2GQp6i+eqjrbJDule uQzGFTnKlaavC78YnuCP/UTEMso7vQD+GYFRd3N0ItSznX2YTiZolpw+9Jez+c1d lmDo2US/Y5IfJsol0X3Wsq8js5EkLcDDpGP5KHwQv2Bfe9kxVPToJ2EcA3KhkU0C KpyfE8NbfrnP3tPTEuWFyuC9jrTn+Fyv0RqzY3KeTNb+7EQrfZYkvEDdOB6v1ZI= =Jn/y -----END PGP SIGNATURE-----