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-i386-ovf.zip.sig gpg: Signature made Tue Oct 15 17:39:24 UTC 2013 using RSA key ID A16EB94D gpg: Good signature from "Turnkey Linux Release Key" For your convenience we also include file checksums: * sha1sum 6df2ccc6237da99e8ec0dc30d6822f74fc1e37d2 * md5sum 1b3e45a5a92619019061438d6f966e2f 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) iQEcBAABAgAGBQJSXX3AAAoJEIXCXpWhbrlN2U0H/A3r0grJAKqkhp2x8AlTP93Z AciETr7WgeZ7zl11UZZE/G9gl4Y0fl4u1lDjNs86Orn18wqkT5kqta6VUzlqBdkA vkCxM4TEjSYkZLBdmieiJdezJRPZDVDEsmcLtD08G8cZBXWA+b6L29tVDNe0aIxF /H44SStfhaDPMbullhovepkWGWvj5ON6F6l1BMcH/fbRW3DRi/qQXvC4wMMPUOww gwNiqyQP3Z/oN4ZiCfDiQgSOKXORtlBgC0sYAkaFGv81kXxjUlKTJyizo3vwtwir D0dSiXUQJhk4qYucuYSHWTLvYQ4osvehKHRbJqmSmGOfR36cCrrouqQQnZzxniY= =VhP2 -----END PGP SIGNATURE-----