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-redmine-12.0-squeeze-x86-vmdk.zip.sig gpg: Signature made Tue Aug 21 12:26:07 UTC 2012 using RSA key ID A16EB94D gpg: Good signature from "Turnkey Linux Release Key For your convenience we also include file checksums: * sha1sum 73c005bc9e1dd280d90afbcd5dae9b9df0c63f52 * md5sum 6a75b0a82a61a92a8b7600241951db7b 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) iQEcBAABAgAGBQJQM35PAAoJEIXCXpWhbrlNbMUH/jJt+10STQlGJ6bDbnFNlPAS 4rryAyWynviDOAHorz5EonZzm/hZQLGjwhpxlTzeq6MZdOHeY9H7HMMXF84etSZN CJVbP/LYkAakUOD/LkHZFazNMC3N0ZGN1Ktbzuk40Y78sM6hOgXy6njVblz8ibvu 0pDGgTuVSOfG0j9eknWp3+pKZvDMox5DyxIT6sICG4VsydYe4I/IZlz7uGtMjksw 3aTYa5FzY3ywGZHUUyXu0xLNmnygBEqXWizSlBBv8aJR8uzDkcl+25zsp2v1nuJp BJGxO7gJ2P0Ih5Rwqy3mKy9qm2SO3HuysFC5MqZ+1Vhfk7zijMjD529nc7nEqCg= =uqo+ -----END PGP SIGNATURE-----