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-ovf.zip.sig gpg: Signature made Wed Oct 16 09:33:07 UTC 2013 using RSA key ID A16EB94D gpg: Good signature from "Turnkey Linux Release Key" For your convenience we also include file checksums: * sha1sum f4f6a737b1e785184bdf15ca4195ed5523bdf132 * md5sum 561ed4cc5e3fbc2bee2328c30715fa0e 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) iQEcBAABAgAGBQJSXl1IAAoJEIXCXpWhbrlN5M4H/1IxJ1vXMktCcymWFxEVohXR FbH+c2cjqrmOqDYfXlpTgfzctdydIaGOwtaMEt6gdyMy0F2Po7H3F35tcse8+JR7 odpS8JqmBPZprsc0BQO66tJJrlSxXNDbMDEfY0wfA3FnWM7KtK/KH3gXwa1OmONU vKgH39i291fUNICLNsm0L33UW02BRubss5y6KshCPgoDUOhoC8xhdq5fPpX9687l 1oc0RbQKJ+0shU8tq/RvVK5u3f4fcz8QnLfVRE+GhVE4cCFn/Jvqlzbd2ZW7bg2n unVEnkGnFLSYof8ppETK8YYDFiDIx55UONzNZQahS9+JRokge8YbVbs7qUvqG2o= =uUQd -----END PGP SIGNATURE-----