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-collabtive-12.1-squeeze-i386-ovf.zip.sig gpg: Signature made Tue Jun 4 20:16:00 UTC 2013 using RSA key ID A16EB94D gpg: Good signature from "Turnkey Linux Release Key" For your convenience we also include file checksums: * sha1sum 49a7614c832461135e782fa56111d81c0909dd65 * md5sum 9cf1b5bee69aa249cb24a6bc48cbd9c2 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) iQEcBAABAgAGBQJRrkrxAAoJEIXCXpWhbrlN9qkIALQ6/XwCMw6wkInpZ+uWxQEu AcLBbIo7lmf6EwAFZMPTG3iCHY8xfWDmOouldMs7qrEcZi2eXgkhj6WbhVgSrAJj U6ofv6ZwvwqSWcDjPco6P6efKQaRCGwZxp/AZy7ia35fudsNWJWZnfcxK3oz2PCg L831+eWZT2s5PFQv0nNnM7S9TJI7fINI5RE6GOfjei3FQdUuMQoS83Q/yHoB2NsX xfIfYrhQjnOppYbfEFMbkngGaOWlApHJLDsW5KTVLrw/Um2+pxM/V0Ng9TjxMDx4 nupBoTnuF8masnIwQEie4W5OETzo44Ljl1iz+FcbYsrb36Bm4A22psBIYsXdlzw= =DlQH -----END PGP SIGNATURE-----