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-12.1-squeeze-amd64-xen.tar.bz2.sig gpg: Signature made Tue Jun 4 15:13:15 UTC 2013 using RSA key ID A16EB94D gpg: Good signature from "Turnkey Linux Release Key" For your convenience we also include file checksums: * sha1sum fa12f3b798cc662163ad0546e55ccb52960b22c5 * md5sum 313d7cf1123cde19bc2286ab00013b02 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 v1.4.10 (GNU/Linux) iQEcBAABAgAGBQJRrgQDAAoJEIXCXpWhbrlN8fUIAJyv58IRZzX2EDFgLG6HgVPd zsSwEx9d4PpezmiOV9qWmWqOrMv6xRBEMY7/csN8fE+OdzsVDzuv2inM2b04SDuE 4gD2iLb9C+pcWK3qTarp2+aqi64BDIdu8YxF8vEdqSZjsXzkLvwLReMDCBWp7n4Z Nr6BY5YakXM7r7/OdymnbC84Kh5tXFqssqPMlXF0ffEMamdSSBXA/R5yqrXMh/xF nxx5dLIsIqg2sBChZZJ/KNbdQuFw0YvX6QYp/H6vhRLpuERyeLlw4CM3fCk5CEn0 xvNqCodH/suoNW5EU9VrH4KmMm1NwpvKOmIOK2HuPwxRs0gDC091ESd8J5fkOX8= =5oVs -----END PGP SIGNATURE-----