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-zurmo-13.0-wheezy-i386-vmdk.zip.sig gpg: Signature made Tue Oct 15 20:28:31 UTC 2013 using RSA key ID A16EB94D gpg: Good signature from "Turnkey Linux Release Key" For your convenience we also include file checksums: * sha1sum afad5c9ff2310da9902d707aa3a8a1a2fc7f91c0 * md5sum 87ceb53705ddd9c8a550e60da4a0229e 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) iQEcBAABAgAGBQJSXaVkAAoJEIXCXpWhbrlNInEIAOxfChAUwryXww2gJgofBhOg UPUjOL+MNqqcM0STfLcV/iG3TP2hTp+EeQ3rRCe1mwIka7Hz/S74aQSuu8dHb7Jz BCiycE2vsjAvjvOBDmA8akaeBPhLhOFkQTU/nUbbC9tNi0YtBIPhBvzi8Zp9zqQR Iz7iAyFi07hI0M3Ka9LAZ+ZUMYt9cKV0LcRyvGqABYHxG0xe/K017SILf2LBjebA c5WEPcUSlgQRDqC8utRMw6itcvelLgOQOPAyJs3JnW3iUL3EyglNT/cL1FnDlv2N iLgX/cDCvfQwQpaBklRqOTkWrY1+Bh9S4oSIA4Wg8P90FIBXqlwNgeRL2X/ppmM= =/Rww -----END PGP SIGNATURE-----