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-13.0-wheezy-amd64-xen.tar.bz2.sig gpg: Signature made Fri Nov 1 09:21:51 UTC 2013 using RSA key ID A16EB94D gpg: Good signature from "Turnkey Linux Release Key" For your convenience we also include file checksums: * sha1sum 8839e09adcbe5277017fe068276794abd09600be * md5sum 00eeb6e38aedd9643a3bdef5d7e319e4 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) iQEcBAABAgAGBQJSc3KnAAoJEIXCXpWhbrlNLIAH/3Bc+HutX/i8mC6wRF2SgK/v uSO1NhPK9bz7SE1kHHNZjhFzmaCHJ+OY/dSIGR3e0sUS1zFVaySFCFTJa4t962/E P3OycjfCc61+AyUAq5o1HI2LoVnle6AJ5fp/mDkqgh9k39Kw96wBYLnCxzsPThfq J92CyY7PXAO5/w53Rkv7bpOSlp1gwsfZlWgV8NUystwM3Yki6QvEut6FoXJcEGH7 H3AVxOS3C93Uh9NxAOEzhTPPAQLIND79H/GVg3fhYw4FtNs7BnfEXp291qe1w8W4 M0/+IR0eH/C9C1uCNo4q8QGjJLvzDJ0MWKPi72IGoN+eLEC7pYACiiM0t9elfN8= =JyK6 -----END PGP SIGNATURE-----