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-etherpad-12.0-squeeze-x86-vmdk.zip.sig gpg: Signature made Tue Aug 21 11:42:03 UTC 2012 using RSA key ID A16EB94D gpg: Good signature from "Turnkey Linux Release Key For your convenience we also include file checksums: * sha1sum 73e7c82e115abf7cdbce2212ee252d117954cad4 * md5sum f2c59b7ea36f0b3d592f63c87676cea4 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) iQEcBAABAgAGBQJQM3P+AAoJEIXCXpWhbrlNo9EH/jPMAQL0ZNTs/6OH7mWaQWJ1 RMH+yttUA39z5c9+M0Kp+Rg6CCjHN0GlRI0rIOM3dGoTzgYtn4/Rj7b2qSgQrWFi h/zV/XlMkrxnQnSkkD7DSPcdzyvF2acyKXw3J8EkXjwO6bFcZnAIM6eAalo1TL/c Pw5m17URu70ilaPSrC/yWNQYS1gcvbA3k23+wAMtscjbwHOaekpsipWe89cegSP9 gFOGCt9NiSPx9epKkoiYjxW6+T8710+px0GuI0AFUOb0cAHFvptVf6kubh5AUPmX 1QDGBzFr1R1gd5r5wfHmx/4+jec+HG3BVcOou7jEMIWnwvmUB8NV8kJ2PvvAa84= =I3IW -----END PGP SIGNATURE-----