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-movabletype-13.0-wheezy-amd64-openstack.tar.gz.sig gpg: Signature made Wed Oct 16 09:33:01 UTC 2013 using RSA key ID A16EB94D gpg: Good signature from "Turnkey Linux Release Key" For your convenience we also include file checksums: * sha1sum 4823a753ce6c59581d6bf377fb0d474b568beaa6 * md5sum d4af5a024985433472779b9899e2c53d 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) iQEcBAABAgAGBQJSXl1DAAoJEIXCXpWhbrlNLXAH+wXH7YsFIilKzf3CPJi4A4V/ WA3O3v3cKuo6eQq82NOQJzNcalAfvi6jRUbZeDB/Jam84enpGv968f32NvCq0kzP XbHFGnvkEubRkDCY/fvJqWDQXGAQSZ3vyliOvEzuqoOT0b+4CfteVYoOTZh6l7zz si+1SbJ2De4N/vksotIHhIzC5Yv6cRLRBdkJAkMlSZ540ategnNdsGj7vypwxhaz P/RcW4i1LD6I+mEK7k3A+XTIVD/2pbR24ED0HMr8jZo/+TqYpou/yRM07qzb+B5v ZwhRASDCuxnFhE1klRDH1sd/2O1BlaIS0bZiXY4cB4/fqwAIFEikckFCRi7nGCU= =VUM8 -----END PGP SIGNATURE-----