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-roundup-12.0-squeeze-x86-vmdk.zip.sig gpg: Signature made Tue Aug 21 12:25:23 UTC 2012 using RSA key ID A16EB94D gpg: Good signature from "Turnkey Linux Release Key For your convenience we also include file checksums: * sha1sum 6924cc704909416c1e50fc0a66ce7c8be2427d32 * md5sum 71b2518599fbf3b654cae1c325b0cd35 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) iQEcBAABAgAGBQJQM34nAAoJEIXCXpWhbrlNkD0IAI8+6iAO06AMluL/MUX2wuSB Pf5fG6xIi6WoayWnTxgSK2GgPaYAu6+R3zfV16g5PkMh1QS0tLfXvhmRpsaEFiUd p+3oiUSzySj7Qy5yRa8v3HD3FRVjjrD9TVxF+t9OzBEofP4CMhXimFpa//9CIbya eYn/D2CCHyVt8lnbzL5mGnOk9Jvgb7RY4svqd/Hug4ybPS3tz7/dunnwumJQXMsN OeYj0mhKiSnU+7VVRxSeVCp1buiJfCJj3QDhF77MtZh0JUSxtmH9njsBa+P13ZAf ks/JuFw2E9zKp3GhLgbkwORn9ryUMzvgPzlSvl8sO/kPrY40P5ILn+vRqRujR2E= =O3+3 -----END PGP SIGNATURE-----