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-owncloud-13.0rc3-wheezy-amd64.iso.sig gpg: Signature made Fri Sep 13 08:49:45 UTC 2013 using RSA key ID A16EB94D gpg: Good signature from "Turnkey Linux Release Key" For your convenience we also include file checksums: * sha1sum a0d6a6dbe7f10f31246da0560e17e926f8db07fc * md5sum 613b6b631a549f1919cfc4a426175042 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) iQEcBAABAgAGBQJSMtGgAAoJEIXCXpWhbrlNPXcIALx9oEbgiKSvQveXVJks2MJj jVE3xGcCiBIUSJHoSojJb33RN0pNl0oICxxSjGogjtSYNS1wMkbdWZUTX6EG4SFV fHP3zCOHsx5pqgdsJN/2dKlOLY09+sZ43XIRiXL3oLI7FXOYLqnGEeH3xK2COVm1 NIU/73Y9g0O+zqgtYwBmCEUJHtT0Jk33WExOqsx7PhHsbb+aFeYSmYiD5lgcThui qGnI8BKty9CWG2AJgkdazGNoUhqJTLJdknKA3/ydg1WRLMQRxDGMgAWDJTeSK09v qbmRuobeiiuqckbyRcbmzYg9IVM9SaP7FMV/N228zeEndWNHvhUi+5m0mbn4fDA= =hFLV -----END PGP SIGNATURE-----